JPH0451251B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention generally relates to a simple press mold and a method for manufacturing the same, and more particularly to a simple mold suitable for high-mix, low-volume production and a method for manufacturing the same.

Definition of Terms The present invention covers shearing dies for outline punching, hole punching, feed punching, total punching, etc., bending dies for V-bending, box bending, folding, etc., relatively shallow drawing dies,
Alternatively, since it can be applied to those composite molds, etc., in order to give a common expression to these, the following terms are defined and used as follows.

Press action parts: Shearing punches, cutting edges of dies, bending punches, action surfaces that give bending to dies, strippers, knock-out plates, etc., which are used to achieve the purpose of each mold. Collectively refers to parts that are directly involved.

Working surface for press: Similar to the above-mentioned working part, this is a general term for the part that acts as a surface for the purpose of each mold.

Press action part pattern: A general term for the two-dimensional or three-dimensional dimensions and shapes of the press action parts, as well as the mutual arrangement and mutual orientation of a plurality of press action parts.

Background of the Technology Generally, in press working, depending on the aspect of the individual press working, such as shearing, bending, drawing, etc., and the size and shape of the individual press working products,
Further, depending on the material and thickness of the blank used for press working, a mold set consisting of two or more molds used in combination with each other unique to each press work is used. A plurality of molds forming these hemlocks are moved relative to each other along one axis Z to perform press working.

Each mold making up a particular mold set was composed of multiple parts.

Many of the multiple parts that make up a specific mold must be individually designed and precisely manufactured according to the intended processing content, and they must be precisely assembled, joined, and fixed. In some cases, complete molds must be produced, and the complete mold set must be precisely mounted on the press equipment.

The use of imprecisely made parts, the use of imprecisely assembled finished molds even for precisely made parts, and the use of press equipment even with precisely assembled finished molds. The use of imprecisely mounted dies impairs the precision of pressed products, reduces product yield, or damages the dies and press equipment.

Important mold set requirements are detailed below for a two-point shear punch and die mold set.

Precisely form the relative dimensions and shape of the press action part pattern (for example, punch cutting edge pattern and die cutting edge pattern) that becomes the strength of a set of molds.

Punch parts and die parts that will be used as Tsugai,
Precision joining and fixing with other component parts of each mold (alignment in the Z-axis direction, placement on the XY plane orthogonal to the Z-axis, and precise alignment of orientation relationships. Precision of the completed mold) Precise installation of the completed mold set by joining multiple parts into the press machine (alignment of the punch cutting edge pattern and die cutting edge pattern in the Z-axis direction, placement and orientation on the XY plane) precision fitting).

In addition, in actual press processing sites, when a product is planned, a prototype is first produced, and after various studies are conducted on the prototype, small-scale production is carried out, and after examining the results, large-scale production It is common to move to production. Therefore, if a satisfactory prototype is obtained through these processes, or if satisfactory production is achieved in small-scale production, the following points are important in order to produce a product that is exactly the same as that product. be.

To reproduce with high reproducibility the exact same mold set used for prototypes and small-scale production.

In addition, in press processing, when manufacturing a single product, there are cases in which one or more of the above-mentioned types of press processes (outline punching, hole punching, V-bending, etc.) are performed in multiple press operations, and cases in which multiple types of press processes are performed in multiple press operations. There are cases where press working is performed in one press operation (for example, complete punching). In the former case, there are cases where multiple types of press processing are performed individually using multiple press machines that are not related to each other, and cases where workpieces are processed using multiple press machines that are arranged in a way that is related to each other on a single production line. When carrying out a series of press operations by automatically conveying the
In addition, there are cases where a plurality of progressive lines and transfer lines are provided for mass production.

In the case of these progressive lines and transfer lines, the following matters are also important.

To accurately mount press working part patterns of a plurality of die sets at a plurality of press working positions on one progressive line or transfer line by associating them with precise arrangement and orientation with respect to a workpiece.

To accurately reproduce corresponding mold sets on multiple progressive lines and transfer lines with good reproducibility.

Furthermore, it has been desired for many years to be able to accomplish the above items without requiring the skills of a skilled engineer.

Prior Art and its Problems Set of Molds for Mass Production Originally, press processing was developed and developed to mass produce products with the same shape and dimensions. Each of the at least two molds constituting such a mass production mold set is generally composed of a plurality of parts. This will be explained in more detail regarding a typical press die set (upper die and lower die) for shearing.

(1) Components of the mold set Upper mold: Die set for the upper mold, punch plate, punch cutting blade parts, etc. (e.g. packing plate) Lower mold: Die set for the lower mold, die cutting blade parts (2) Overview of each component parts Punch cutting Blade component: A punch cutting edge pattern is formed at one end in the Z-axis direction of the block for the punch cutting edge component. (The punch cutting edge pattern is rough-machined to a slightly larger size, and after hardening, the dimensions and shape of the cutting edge pattern are precisely finished by the skill of a skilled engineer.) Punch plate: For implanting the implanted part of the punch. A planting hole and multiple screw holes are formed. The relative arrangement and orientation of the implant hole and the plurality of screw holes are arbitrary. (The planting pattern is roughly machined to be slightly smaller, and after hardening, the shape and dimensions of the planting hole are precisely machined by the skill of a skilled engineer.) Die set for upper die: Supports the flat polished surface of the punch plate. A block-shaped main body, with a shank for attachment to a press machine on one side, and a guide post extending outward in the Z-axis direction from that surface on the other side (to engage with the guide bush of the lower die set). are formed in advance, and larger screw insertion holes are formed in an orientation corresponding to the plurality of screw holes formed in the punch plate.

Die parts: A die cutting edge pattern with clearance to the punch cutting edge pattern is formed on one side of the blank for the die, and a "niban" is formed on the opposite side, and multiple holes penetrating between the two sides are formed. A screw hole is formed. The die cutting edge pattern and the relative arrangement and orientation between the blade and the plurality of screw holes are arbitrary. (The cutting edge pattern of the die is roughly machined to be slightly smaller, and after hardening, the punch cutting edge pattern is precisely machined by the skill of an experienced engineer.) Die set for lower die: A guide bush is on one side, A punched piece (product or scrap) that penetrates from one side of the above to the opposite side
Drop holes are pre-formed, and larger screw holes are formed with placement and orientation corresponding to the multiple screw holes of the die component.

(3) Assembling the component parts (completion of mold set) Fitting the punch cutting blade part and the punch plate: Fit the implantation part of the punch cutting blade part and the implantation hole of the punch plate, and then The cutting edge pattern is oriented in the Z direction and precisely adjusted by the skill of a skilled engineer so that it has the desired height dimension, and then temporarily fixed.

Alignment of the punch/punch plate assembly and die parts: The clearance and alignment relationship (in the XYZ directions) between the punch cutting edge pattern in the punch/punch plate assembly and the cutting edge pattern of the die part is determined by the skill of a skilled engineer. Make precise adjustments. If necessary, each cutting edge pattern is precisely finished.

Fixing the punch and punch plate: The fitted portion of the adjusted punch/punch plate assembly is fixed, for example, by brazing. If necessary, polish the back of the punch plate.

Fixing the upper die: Temporarily fix the fixed punch/punch plate assembly and the die set for the upper die. The temporary fixing is performed by aligning the plurality of screw insertion holes of the die set for the upper mold with the screw holes of the punch plate and temporarily fixing them with screws. At this time, since the screw insertion hole of the die set is formed to be relatively large, the relative positional relationship between the two on the contact surface can be adjusted within a limited range.

Temporarily fixing the lower die: Temporarily fix the die part and the die set for the lower die.
The temporary fixing is performed by aligning the plurality of screw insertion holes of the lower mold die set with the screw holes of the punch plate and temporarily fixing them with screws. At this time, since the screw insertion hole of the die set is formed to be relatively large, the relative positional relationship between the two on the contact surface can be adjusted within a limited range.

Completion of the upper die and lower die: The guide post of the upper die assembly and the guide bush of the lower die assembly are fitted together, the cutting edge pattern of the punch part and the cutting edge pattern of the die part are fitted, The alignment of the cutting edge pattern in the XY axis directions (including clearance) is precisely adjusted by the skill of a skilled engineer. After adjustment, firmly tighten and secure the temporarily fixed screws of the upper die assembly and lower die assembly, then punch through holes in the punch plate and die set for the upper die in the upper die assembly,
Drive in a dowel pin to fix it, drill a through hole through the die part in the lower die assembly and the die set for the lower die, and drive in a dowel pin to fix it.

Attachment of the completed die set to the press equipment: After the completed die set is temporarily attached to the press equipment, a trial cut is performed by the skill of an experienced engineer to ensure alignment of the cutting edge patterns of the punch and die parts. After adjusting the relationship, tighten and fix it completely.

As mentioned above, the classical mold set for mass production requires skilled technology in all processes, from manufacturing each part of the upper and lower molds, to temporarily fixing and fixing them, to installing the completed mold on the press equipment. had no choice but to rely solely on the skill of the person. Moreover, in these processes, the matching relationships between the parts that form the hemlock, and the alignment relationships between the assemblies that form the hemlock at each stage of assembly, are adjusted by actually fitting the hemlocks together and performing precision machining. , confirm the results, and repeat the work to complete the process. The mold set thus completed can be precisely finished in its hem, but it has been impossible to produce multiple identical mold sets. This requires an extremely long time to adjust the mounting position of the mold on multiple progressive lines and multiple transfer lines for a pressed product that is completed through multiple pressing steps. In addition, when installing the molds thus completed on the press equipment, the molds are temporarily installed on the press equipment, and the matching relationship between the molds is precisely adjusted by the skill of a skilled engineer. After adjusting and making several trial cuts, tighten and fix.

If the above-mentioned precise alignment is not adjusted, not only will a satisfactory product not be obtained, but the mold or press equipment may be damaged in some cases. Moreover, the precise alignment and adjustment required by the skills of skilled engineers increases the mold manufacturing time and therefore the manufacturing cost. Precise fitting of the mold to the press equipment increases the setup time before the press operation and therefore also increases the manufacturing cost of the pressed product. In addition, the above-mentioned type of mold has a large number of parts, and the volume and weight of the die set in the mold set are extremely large. Therefore, when high-mix, low-volume production is desired, it is necessary to simply separate the individual molds. Not only does the material cost and production cost of the set increase,
Handling of mold sets is inconvenient, and storage space is also a significant cost factor.

QDC mold setting The so-called QDC system (Quick Die Change System) began to be used over 10 years ago to facilitate the installation of molds into press equipment. This system is based on the use of a press device and presetter for QDC molds.

Overview of press equipment for QDC It has a pair of mold mounting parts that receive and uniquely position the base plate that constitutes a part of the mold, and these mold mounting parts are attached to guide posts provided on the press equipment. and a guide bush for relative movement along the Z axis. Unique positioning of the base plate is performed by providing a plurality of location pins (usually a pair) on each attachment part so that they can be retracted and retracted, providing location holes in the base plate with a corresponding number and arrangement, and fitting them together. , the positioned base plate is fixed by a tightening fixing means.

That is, in the QDC mold, it can be considered that the die sets for the upper mold and the lower mold in the aforementioned mold set are replaced with a base plate.

In the above-mentioned conventional press equipment, the die set for the lower mold and the attachment part of the lower mold are not directly and uniquely positioned, but the die set for the upper mold is pressed by the shank of the die set for the upper mold. The die set for the lower die was positioned with respect to the apparatus, and the die set for the lower die was precisely positioned with respect to the positioned die set for the upper die by the skill of a skilled engineer, and was fixed to the lower die mounting part of the press apparatus.

On the other hand, in the press equipment for QDC molds, the upper and lower mold mounting parts are precisely moved relative to each other by the engagement between the guide post and the guide bushing, and each mounting part and base plate are connected to multiple locations. The position is uniquely determined by the fit between the pin and the location hole. Therefore, the assembly relationship of the molds of these base plates defines the matching relationship of the press action part pattern (for example, the punch cutting edge and the die cutting edge) of the mold that becomes the hemlock.

Overview of the presetter The presetter has a pair of opposing mold mounting parts with location pins that correspond to the location pins of the QDC press device, and has means for relatively moving them along the Z axis.

The configuration, production, and installation of the QDC mold set to the press equipment will be explained below in connection with the conventional mold set described above.

(1) Components of QDC mold set Upper mold: Punch parts Punch plate Base plate Others (e.g. packing plate) Lower mold: Die parts Base plate (2) Overview of each component Punch parts: Pre-quenched rectangular A punch cutting edge pattern having a desired size and shape is formed at one end (hereinafter referred to as the cutting edge end) of a commercially available blank. The end opposite to the cutting edge (hereinafter referred to as the implanted end) does not need to be processed, but may be processed into a desired size and shape. The relative arrangement and orientation relationship between the cutting edge pattern and the size and shape of the implanted end is arbitrary.

Punch plate: A commercially available blank with a pre-hardened rectangular plate surface is formed with a stud hole and a plurality of screw holes for receiving the proximal end of the punch component without play. The mutual arrangement and orientation of the plurality of screw holes is arbitrarily determined for each mold. The size and shape of the implantation hole and the relative arrangement and orientation of the plurality of screw holes are arbitrary.

Base plate: A commercially available pre-hardened blank with a rectangular plate surface pre-formed with location holes that precisely correspond to a pair of location pins in a press in a predetermined arrangement and orientation, with multiple screw holes formed therein. . The mutual arrangement and orientation of the plurality of screw insertion holes correspond to the plurality of screw holes in the punch plate, but are formed with a radius larger than those of the plurality of screw holes. The difference in diameter between the multiple screw holes in the punch plate and the multiple screw insertion holes in the base plate is important for adjusting the relative placement and orientation between the punch cutting edge pattern and the location hole when assembling the mold parts. used. The relative arrangement and orientation relationship between the pair of location holes and the plurality of screw insertion holes is determined by the desired relative arrangement and orientation relationship between the punch cutting edge pattern and the location holes in the completed mold, as described in the above punch plate. It is determined based on a rough estimate so that the adjustment is within an adjustable range due to the difference in diameter between the plurality of screw holes in the base plate and the plurality of screw insertion holes in the base plate.

Die component: A die cutting edge pattern and a plurality of screw holes are formed between opposing surfaces of a rectangular plate-shaped blank to align with the cutting edge pattern of the punch with a desired clearance. The mutual arrangement and orientation of the plurality of screw holes is arbitrarily determined for each mold. The relative arrangement and orientation relationship between the die cutting edge pattern and the plurality of screw holes are arbitrary.

Base plate: A commercially available pre-hardened blank with a rectangular plate surface pre-formed with location holes that precisely correspond to a pair of location pins in a press machine in a predetermined arrangement and orientation, with multiple screw holes formed therein. do. The arrangement and orientation of the plurality of screw insertion holes correspond to the plurality of screw holes in the die part, but are formed with a radius larger than those of the plurality of screw holes. The difference in diameter between the multiple screw holes in the die part and the multiple screw insertion holes in the base plate is used to adjust the relative placement and orientation of the die cutting edge pattern and location hole when assembling the mold part. be done. The relative arrangement and orientation relationship between the pair of location holes and the plurality of screw insertion holes is such that the desired relative arrangement and orientation relationship between the die cutting edge pattern and the location holes in the completed mold are determined by It is determined based on a rough estimate so that the adjustment is within an adjustable range due to the difference in diameter between the plurality of screw holes and the plurality of screw insertion holes in the base plate.

(3) Assembling the components (completion of mold set) Fitting the punch part and punch plate: Fit the implanted end of the punch component into the implant hole of the punch plate. The Z-axis of the punch component is precisely fitted perpendicularly to the rectangular plate surface (XY plane) of the punch plate (XY plane) using the skill of a skilled technician at the desired height to form a temporary punch/punch plate assembly. do.

Alignment of the punch/punch plate temporary assembly and die parts: The punch/punch plate temporary assembly and die parts are actually interlocked, and the alignment relationship of their cutting edge patterns in the XYZ directions (including clearance) is determined. Precisely adjusted by the skill of a skilled engineer. If necessary, sharpen and adjust the cutting edge pattern.

Fixing the punch parts and the punch plate: The punch parts and the punch plate of the adjusted temporary assembly are fixed by brazing, for example, to complete the punch/punch plate assembly. Polish the back of the punch plate if necessary.

Temporary fixing of the upper mold: The screw holes in the punch plate of the completed punch/punch plate assembly are aligned with the screw insertion holes in the base plate, and they are temporarily screwed together to form the temporary upper mold assembly.

Temporary fixing of the lower mold: The screw holes in the die part and the screw insertion holes in the base plate are aligned, and they are temporarily screwed together to form a temporary lower mold assembly.

Adjusting the alignment of the upper and lower molds: Fit the location pins of the mounting portion of the presetter into the location holes of the upper and lower temporary assemblies, and attach them using tightening means. By moving the upper and lower molds relative to each other along the Z-axis and, if necessary, fine-tuning the relative positions of the parts in each temporarily assembled assembly along the XY plane, the alignment can be adjusted by a skilled technician. Adjustments are made depending on skill, and precise adjustments are made by cutting a sample of old newspaper, for example. After adjustment, tighten the clamping screws on each mold assembly.

Completion of mold set: The tightened upper mold temporary assembly and lower mold temporary assembly are supported on the presetter,
Drill multiple through holes in the punch plate and base plate, and in the die part and base plate,
Drive dowel pins into them to complete the upper and lower mold set.

Attaching the completed mold set to the press equipment: The completed mold set can be secured by simply fitting the location pin in the mounting part of the press installation into the location hole of each mold and tightening it with the tightening means. The cutting edge pattern can be installed precisely by anyone without requiring any skill.

As mentioned above, in QDC mold set,
Die set cost is saved because the die set is replaced with a much smaller base plate.
Furthermore, the volume of half or more of the mold set,
Since the heavy die set is replaced with a small base plate, it is extremely easy to handle and the storage space can be greatly reduced.
Therefore, a mold set suitable for high-mix, low-volume production in which the mold set is frequently attached and detached can be provided.

However, QDC molds still require a pair of upper and lower base plates instead of a die set, and additionally require an additional auxiliary device such as a presetter, as well as the integration of the assembly of the punch part and the punch plate and the presetter. The final alignment and integration of the mold sets to be used still requires the skill of a skilled engineer, making the production of molds time consuming and costly, and making it difficult to duplicate exactly the same mold set. Can not.

For example, when shearing a thick blank, some "sagging" or irregular fracture surfaces will occur at the sheared edges, but in order to finish these sheared edges neatly, these parts must be The front and back sides are scraped away little by little over several times, using a set of several shaver molds with roughly similar cutting edge patterns that differ in size by the amount of the scraping allowance. It will be done. After the parts of these mold sets are completed, it takes two to three days for final assembly. Moreover, the skill of a skilled engineer is also required to mount the completed mold set on, for example, a progressive line with cutting blade patterns arranged in a fixed relationship.

(4) Manufacture of QDC mold parts Punch parts: A pre-quenched blank with a predetermined shape is machined using, for example, a reverse electric discharge machining machine. The reverse electrical discharge machining apparatus includes a blank mounting section and a discharge electrode mounting section that move relative to each other along the Z axis. These mounting parts are guided in the Z-axis direction by at least three (usually four) guide posts. Align the Z-axis of the blank with the Z-axis of the blank mounting section, and align the Z-axis of the discharge opening with the discharge gap necessary to form the desired punch cutting edge pattern to the Z-axis of the discharge electrode assembly. Align and install. During the relative movement of their mounting parts along the Z-axis, sparks are blown between the discharge electrode and the blank, melting the blank and forming a precise punch cutting edge pattern.

If necessary, the implanted end is sized and shaped in a manner similar to that described above.

Punch plate: A commercially available blank with a prehardened rectangular plate surface is machined, for example, in a wire-cut electrical discharge machine. For example, the two sides of the blank, including the two sides adjacent to the rectangular plate surface, are precisely polished so that they are at right angles, and then set on the corresponding guide surfaces of the wire-cut electric discharge machining device, and the included angles of the two sides are set. As a reference, a planting hole and a plurality of screw holes are marked on a rectangular plate surface in the desired arrangement and orientation, a small hole is drilled in advance in the area where these holes are to be formed, and a discharge wire is inserted into the small hole. , Machining the above-mentioned planting hole.

Base plate for upper mold: The processing method is the same as that for the punch plate described above. The mutual arrangement and orientation of multiple screw insertion holes are as follows:
The holes are formed to correspond to those of the plurality of tightening screw holes in the punch plate. The relative arrangement and orientation relationship between the pair of pre-formed location holes and the plurality of tightening screw holes are as described above.

Die parts: The processing method is the same as the punch plate described above. The die cutting edge pattern is formed with a desired clearance with respect to the punch cutting edge pattern, and the mutual arrangement and orientation relationship of the plurality of screw holes and the relative arrangement and orientation relationship with the die cutting edge pattern are as described above.

Base plate for lower mold: The processing method is the same as that for the punch plate described above. The mutual arrangement and orientation of multiple screw insertion holes are as follows:
The plurality of tightening screw holes in the die part are formed correspondingly to those of the plurality of tightening screw holes. The relative arrangement and orientation relationship between the pair of previously formed location holes and the plurality of screw insertion holes are as described above.

Purpose of the Invention The inventors of the present invention have provided a tool that can easily and quickly set a mold without relying on the skills of a skilled engineer, and that anyone can easily and quickly set a mold at a press work site. We have researched a simple mold that can be attached to and removed from a press machine, and that can uniquely position the arrangement and orientation of the press action part pattern of the mold set with respect to a pair of location pins on the day of pressing, and a manufacturing method for the same, and have achieved satisfactory results. Completed a simple mold system.

Conventional molds, including QDC molds, must be used in combination for one press operation, but the mold sets must be precisely matched by the skills of a skilled engineer. Because he was constrained by the fixed idea that it was impossible to obtain a satisfactory mold, he took the wrong direction in developing a simple mold.

An object of the present invention is to provide a simple mold that can be applied to various press processes and is suitable for high-mix, low-volume production, and a method for manufacturing the same.

Another object of the present invention is to provide a simple mold that can be commonly used for trial production, small-scale production, and transition to mass production, and a method for manufacturing the same.

A further object of the present invention is to provide a simple mold that has a small number of parts, can be supplied quickly at low cost, and is convenient for handling and storage, and a method for manufacturing the same.

A further object of the present invention is to provide a simple mold that can be created without relying on the skill of a skilled engineer, and that does not require the skill of a skilled engineer to attach and detach it to a press machine. The purpose is to provide a method.

Still another object of the present invention is to provide a simple method for manufacturing molds that allows for duplication of exactly the same mold set. Here, exactly the same mold set means that the mold press working part pattern (e.g., punch cutting edge pattern, die cutting blade pattern), rather than the outer shape of the mold, is set relative to a pair of location pins of the press machine. means a set of molds that can be installed in exactly the same arrangement and orientation.

Other objects and advantages of the invention will become apparent from the description below.

Summary of the Invention The simple mold according to the present invention is based on the premise that a press device of the same type as the above-mentioned press device for the QDC mold is used.

Furthermore, the present invention is based on the premise that a standardized general-purpose mold holder is used. The mold holder includes first and second types of mold holders, which are not parts of the mold, but are used as parts of the press machine for mounting different molds.

First type of mold holder The first type of mold holder typically has a rectangular plate surface (XY plane), and has a plurality of location holes and mold positioning recesses on the XY plane. Orienting means, and if necessary, a punched piece falling hole and/or a plurality of small holes. These holes and recesses all extend parallel to the Z axis, which is orthogonal to the XY plane. The mutual arrangement and orientation of the plurality of location holes correspond to the mutual arrangement and orientation of the plurality of location pins in the press device. The relative arrangement and orientation relationship between the mold positioning recess and the orientation means are arbitrary. The mutual arrangement and orientation of the plurality of small holes are also arbitrary. Although the relative arrangement and orientation relationship between the plurality of location holes, the mold positioning recesses and orientation means, and the plurality of small holes are arbitrary, the first type of mold holder can be attached to a different type of mold. In order to create a common, general-purpose component, it is standardized with a predetermined relative arrangement and orientation relationship. This uniquely determines the arrangement and orientation of the mold positioning recesses, the orientation means, and the plurality of small holes with respect to the location pins in the press device.

Second type of mold holder The second type of mold holder typically has a rectangular plate surface (XY plane), and has a plurality of location holes (usually a pair) on the XY plane, and a plurality of location holes on the XY plane. It has a small hole, and if necessary, one hole for dropping pieces is provided. These holes are all perpendicular to the XY plane
extends parallel to the axis. The mutual arrangement and orientation of the plurality of location holes correspond to the mutual arrangement and orientation of the plurality of location pins in the press device. The arrangement and orientation of the plurality of small holes are arbitrary. Dimensions and shape (pattern) of the punched piece falling hole
The arrangement and orientation thereof are also arbitrary. Although the relative arrangement and orientation of the plurality of location holes, the plurality of small holes, and the cutout drop hole are also arbitrary,
In order to make the second type of mold holder a general-purpose part that can be used with different types of molds, it is standardized with a predetermined relative arrangement and orientation relationship. This uniquely determines the arrangement and orientation of the mold positioning recesses, the orientation means, and the plurality of small holes with respect to the location pins in the press device.

Based on the above-mentioned premise, the structure of the simple mold set of the present invention, its connection to a mold holder, and its attachment to a press device will be outlined in correspondence with the description of the conventional mold set mentioned above.

Simple mold of the present invention (1) Structure of simple mold set Upper mold: First type of mold (e.g. punch) Lower mold: Second type of mold (e.g. die) (2) Each mold Overview First type of mold: A shank and orientation means are provided at one end (base end) in the direction of the central axis (Z-axis) of a typically cylindrical blank that has been hardened in advance, and a press action section is provided at the other end. It consists of a single piece on which a pattern (for example a punch cutting edge) is formed and preferably a collar formed between their ends. The shank is typically cylindrical with a complementary shape that fits without play into the standardized mold positioning recess in the first type of mold holder. The orientation means may be of any type as long as it can cooperate with the standardized orientation means of the first type of mold holder to determine the orientation of the first type of mold. It may be a key formed on the side of the key. If the shank is not cylindrical but has a columnar shape with an irregular polygonal cross section, it functions as an orientation means by itself, so there is no need to provide a separate orientation means. The press action part pattern has a unique size and shape that is suitable for the intended press processing, and the relative arrangement and orientation relationship between the shank and orientation means and the press action part pattern are arbitrarily determined and precisely correlated. It is formed by

A second type of mold: a pre-hardened blank with a typically rectangular plate surface (XY plane) with a plurality of small holes on the XY plane and at least one press working part pattern (e.g. die cutting edge) ) and consists of a single part. All of these holes are in the Z direction perpendicular to the XY plane.
extends parallel to the axis. The plurality of small holes are formed corresponding to the small holes in the second type mold holder. The press action part pattern has a size and shape (pattern) that is suitable for the intended press processing content with respect to the press action part pattern in the first type of mold. The plurality of small holes and the press action part pattern are an arrangement determined by the coupling relationship between the first type of mold and the first type of mold holder;
They are formed in precise alignment with the orientational relationship.

(3) Connection between a mold and a mold holder Connection between a first type of mold (for example, a punch) and a first type of mold holder: A shank of a first type of mold (for example, a punch) and a first type of mold holder. The mold positioning recess in the first type of mold holder is fitted into the mold positioning recess, the orienting means thereof are made to work together (for example, the key and the keyway are fitted together), and if necessary, a connecting means such as a screw is used. join together. At this time, the skill of a skilled engineer is not required at all.

Coupling a second type of mold (e.g. die) and a second type of mold holder: a plurality of small holes in the second type mold (e.g. die) and a second type of mold holder They are aligned in correspondence with a plurality of small holes, and screws and dowel pins are screwed into and driven into pairs of the plurality of aligned small holes selected from among them to fix them. At this time, the skill of a skilled engineer is not required at all.

(4) Attachment to the press device Connection of the first type mold to the first type mold holder: A plurality of location holes of the mold holder in the first type mold/mold holder assembly. A plurality of location pins in the press device are aligned and fitted, and fixed by the tightening means of the press device. At this time, the skill of a skilled engineer is not required at all.

Coupling the second type of mold to the second type of mold holder: multiple location holes of the mold holder in the second type mold/mold holder assembly to multiple locations in the pressing device. The pins are aligned, fitted, and fixed by the tightening means of the press device. At this time, the skill of a skilled engineer is not required at all. Furthermore, the press working portion patterns in the first and second types of molds are precisely aligned and positioned in a designed arrangement and orientation relationship with respect to the plurality of location pins in the press device.

The above mold can be created using the reverse electrical discharge machining device and the wire cut electrical discharge machining device used to create the QDC mold. The difference in the production method is that instead of machining various protrusions, recesses, and holes using the blank part (for example, the included angle on two sides) as a tangible reference, the process is performed using coordinate axes arbitrarily set on the surface of the blank as a reference. shank formed in the first type of mold, the arrangement and orientation relationship between the shank and orientation means and the press action part pattern to be directly correlated and precisely processed; and formed in the second type of mold. The method is to directly correlate the arrangement and orientation of the plurality of location holes and the plurality of small holes, etc., and to precisely process them (this also applies to the production of the first and second types of mold holders). The details will be left to the description of the embodiments.

The present invention will be described in further detail below with reference to some embodiments of the present invention illustrated in the accompanying drawings.

Embodiment "Outline cutting mold set" FIG. 1 is a sectional view showing a state in which a mold set for outline punching press processing according to an embodiment of the present invention is attached to a press machine via a mold holder. , only a part of the mold holder attachment part of the press device is shown. FIGS. 1a to 1g are views showing details of the molds and mold holders for mounting them on a press apparatus in the specific example shown in FIG. 1. FIGS.

In this specific example, the mold set is shown as a three-piece mold set including a punch 1 as a first type of mold, a punch die 2 as a second type mold, and a stripper 3. ing.

The punch 1 and the die 2 are mounted on mold holder mounting sections 6 and 7 of a press machine through a first type mold holder and a second type mold holder, respectively.

A pair of location pins 61 and 71 are provided in the mold holder mounting parts 6 and 7, respectively.
They are operated from the outside and the first and second
The location pin holes 41 and 51 provided in the mold holders 4 and 5 of the type are projected in a direction parallel to the Z axis to uniquely position them with respect to the press device. The other structure of the attachment part is
Since it is commonly used in press equipment for QDC molds, it will not be described in detail.

First Type Mold Holder FIG. 1a is a bottom view of the first type mold holder 4 shown in FIG. 1. The first type mold holder 4 is provided with a pair of location holes 41, a mold positioning recess 42, two keyways 43, and a plurality of small holes 44-49.

The mutual arrangement and orientation of the pair of location holes 41 correspond to the location pins 61 or 71 of the press device. Mold positioning recess 42 is shown as a recess having a circular cross section. Orienting means 43
are shown as two keyways formed at 90° angles to each other with respect to the center of the circular recess 42. In this embodiment, the plurality of small holes 44 to 49 are arranged on the sides of a square, and the small holes 44 to 49 are arranged in pairs of small holes (recesses 42
(opposed to each other across the center) are shown arranged in mutually orthogonal pairs. The relative arrangement and orientation relationship between the mold positioning recess 42 and the orientation means 43, and the relative arrangement and orientation relation between the small holes 44 to 49 can be arbitrarily determined. The relative arrangement and orientation relationship between the orientation means 43 and the plurality of small holes 44 to 49 can also be arbitrarily determined. However, since the first mold holder 4 is a general-purpose holder that is commonly used for the first type of molds used in different press workings, it is standardized according to the desired relative arrangement and orientation relationship. It is necessary.

The mold positioning recess 42 may have an irregular polygonal cross section; in this case, the mold positioning recess 42 itself functions as an orientation means for determining the orientation of the first mold (punch) 1, so a keyway is unnecessary. becomes. However, in practice, it is desirable to have a circular cross section from various viewpoints, and in the case of a circular cross section, an orientation means is required. The number and angular arrangement of keyways 43 can be changed as necessary. In the figures, the circles drawn with broken lines around the small holes indicate enlarged diameter recesses that receive screw heads, indicating that they are screw holes. The other small holes are holes for driving dowel pins, for example.

Shape Cutting Punch (First Type of Mold) Figures 1b to 1d show a top view, a side view, and a bottom view of the punch 1 in Figure 1, respectively. The punch 1 includes a cylindrical shank 11 at the base end that is attached to a first mold holder, a key 12 along the generatrix on the side surface of the shank, and a threaded hole 10 cut in the center of the end surface of the shank. A cutting edge pattern having a desired size and shape is formed on the opposite side thereof, and a flange portion 14 is formed on the side surface of the intermediate portion between the base end portion and the cutting edge portion.

Although the flange portion 14 is not an essential element, the flange portion 14 distributes the load that the bottom wall 42a of the mold positioning recess 42 of the first type mold holder 4 receives during press work to the surface of the mold holder 4. It has the effect of reducing the

The shank 11 and the key 12 are formed with dimensions and shapes complementary to the standardized dimensions and shapes of the mold positioning recess 42 and the orientation means 43 in the first type mold holder 4. The thigh is shown as having one key 12 as an orientation means. Of course, the cutting edge pattern of the punch 1 has a unique pattern depending on the contents of the press work. This embodiment is shown as having a cutting edge pattern in the form of a rectangle with rounded corners. In the present invention, this cutting edge pattern is precisely formed in a predetermined arrangement and orientation relationship with respect to the shank 11 and the orientation means (key) 12.

Thus, the shank 11 is aligned with the mold positioning recess 42.
When the key 12 is inserted into one of the key grooves 43, the cutting edge pattern of the punch 1 is formed in one selected manner with respect to the pair of location holes 41 of the first type mold holder. Therefore, after they are screwed (not shown) through the screw hole 40 formed in the bottom wall 42a, they are fixed by the location pin 61 of the mold holder mounting part 6. When mounted on a press device, it is uniquely positioned with respect to the pair of location pins 61, that is, with respect to the press device.

Second Type of Mold Holder FIG. 1e is a plan view of the second type of mold holder 5. The second type of mold holder 5 is provided with a pair of location holes 51, a punched piece (product or scraps) drop hole 52, and a plurality of small holes 54-59.

The mutual arrangement and orientation of the pair of location holes 51 correspond to the location pins 61 or 71 of the press device.

In this embodiment, the arrangement and orientation of the plurality of small holes 54 to 59 are the same as in the first type of mold holder 4.
The holes 44-49 are shown to be identical to those shown in FIG. These small holes 54-59 also include screw holes and knock pin holes. The punched piece drop hole 52 is necessary only when mounting a shearing die, and is therefore not essential in the second type of die holder 5. However, the mold holder 5 of the second type can be used with a second type having a different cutting edge pattern.
For common use in shearing molds of the type, it is advantageous to provide a punch drop hole 52 of an arbitrarily predetermined size and shape. In this embodiment, it is formed as a large, generally quadrilateral hole.

A pair of location holes 51 and small holes 54 to 59
The relative arrangement and orientation relationship between the cutout piece drop hole 52 and the cutout piece drop hole 52 can be arbitrarily determined. However, since the second mold holder 5 is a general-purpose holder that is commonly used for second type molds used in different press workings, it is standardized according to the desired relative arrangement and orientation relationship. It is necessary.

Outer Cutting Die (Second Type Mold) FIG. 1f is a plan view of the outer shape cutting die (second type mold 52). A cutting edge 22 and a plurality of small holes 24 to 29 are provided.

The arrangement and orientation of the plurality of small holes 24 to 29 are similar to those of the small holes 5 in the second type mold holder 5.
4-59, and therefore also the small holes 44-59 in the first type of mold holder.
It is exactly the same as that of 49.

Die cutting edge pattern (press action part pattern) 2
2 is the cutting edge pattern 13 of the punch 1 that becomes a hemlock.
It is formed with the desired clearance.

The relative arrangement and orientation relationship between the plurality of small holes 24 to 29 and the cutting edge pattern 22 are determined by the location hole 41 in the first type mold holder 4 and the punch (first
(type of mold) 1) is determined in accordance with the relative arrangement and orientation relationship with the cutting edge pattern of 1.

Thus, the plurality of small holes 24 to 29 are aligned with the plurality of small holes 54 to 59 in the second type mold holder 5, and then screws and dowel pins are screwed or driven into the selected plurality of small holes. arrangement of the cutting edge pattern of the die 2 when interconnected;
The orientation is uniquely positioned with respect to the pair of location holes 51 of the mold holder 5 of the second type, and thus uniquely positioned with respect to the mounting part of the press device, and thus also with respect to the punch 1 mounted on the press device. (the first type of mold) is positioned with a desired clearance with respect to the cutting edge pattern 13. That is, the cutting edge pattern of the first type mold 1 and the second type mold 2 mounted on the press device
The alignment relationship (including clearance) with the cutting edge pattern depends solely on the manufacturing precision of the mold and mold holder.

Stripper (second type of mold) FIG. 1g is a plan view of the stripper 3 (second type of mold). The stripper 3 has a hole 32
(press action part pattern), a plurality of small holes 33,
34.

The arrangement and orientation of the plurality of small holes 33 and 34 are similar to those of the small holes 5 in the second type mold holder 5.
mutual arrangement of a plurality of small holes selected from 4 to 59;
The orientation relationship is exactly the same.

The hole 32 is formed with a desired clearance with respect to the pattern of the cutting edge 13 of the punch 1.

The relative arrangement and orientation relationship between the plurality of small holes 33 and 34 and the hole 32 is determined by the pair of location holes 41 in the first type mold holder 4 and the cutting edge of the punch 1 (first type mold). It is determined by the relative arrangement and orientation relationship with the pattern 13.

The stripper 3 is positioned and held apart from the first mold holder 4 by four bolts (two of which are shown in FIG. 1) and an elastic sleeve 34 inserted therethrough. be done. The press action part pattern 32 of the stripper 3 has small holes 3
3, 34 and the small hole 44 of the first type mold holder.
The arrangement and orientation with respect to the cutting edge pattern 13 of the punch 1 (first type mold) are determined through alignment with a plurality of selected small holes of ~49.

Therefore, when creating the first and second types of mold holders and when creating the punch 1, die 2, and stripper 3, arbitrarily determined two-dimensional coordinate axes are used for the blanks used to create them. It is not necessary to precisely match the external shape, but it is possible to precisely match the location holes, mold positioning recesses, orientation means, small holes, press action part patterns, etc. formed in each mold holder or mold in a predetermined arrangement and orientation. It is good if it is formed as follows. The contours of the mold outlines shown with phantom lines in Figures 1b, 1f, and 1g are caused by the two-dimensional coordinate axes set during manufacturing being taken at different positions from those shown (drawn with solid lines). An example is shown below. However, even in molds with different contours, each of the above elements (location hole,
The arrangement and orientation relationship of mold positioning recesses, orientation means, small holes, press action part pattern, etc. are as shown in the diagram.
It will be formed in the orientation.

Thus, the cutting edge pattern of the punch 1 is determined by the relative arrangement and orientation relationship between the cutting edge pattern 13 of the punch 1, the shank 11, and the orientation means (key) 12, the shank 11, the orientation means 12, and the first mold holder 4. The fitting relationship between the mold positioning recess 42 and the orientation means (keyway) 43 in the first mold holder 4; the relative arrangement of the mold positioning recess 42 and the orientation means 43 in the first mold holder 4 and the pair of location pins 41; It is uniquely positioned in the mounting portion of the press device through the orientation relationship and the fitting relationship between the location hole 41 and the location pin 61 in the first type mold holder 4.

Similarly, the cutting edge pattern 22 of die 2 is
The relative arrangement and orientation relationship between the cutting edge pattern 22 and the plurality of small holes 24 to 29, and the small holes 24 to 29 of the die 2
and a small hole 54 in the second type mold holder 5
59, the relative arrangement and orientation relationship between the small holes 54 to 59 and the location hole 51 in the second type mold holder 5, and the location hole 51 in the second type mold holder 5. Through the fitting relationship with the location pin 71, it is uniquely positioned in the mounting portion of the press device.

The same applies to the press action part pattern 32 of the stripper 3. Thus, all those molds are
Precisely match the precision of each manufacturing process.

[Method for manufacturing a mold set] The outline of the method for manufacturing a mold according to the present invention is similar to that already described regarding the method for manufacturing a QDC mold, but supplementary matters will be explained below.

Manufacturing of the first type of mold: The first type of mold (outline punch) 1 is
As mentioned above, it is typically produced using a cylindrical blank, for example, using a reverse electrical discharge machining machine. The discharge electrode has a discharge aperture with a desired discharge gap, and a spark is blown between the discharge aperture and the blank to melt and cut the blank.
The blank support and the discharge electrode support of a typical reverse electrical discharge machining device include a guide frame or guide plate that is relatively guided by a plurality of guide posts (oriented in the Z-axis direction). have The shank 11, the orientation means 12, and the punch cutting edge pattern 13 are machined in two steps by turning the blank upside down. Processing is performed by precisely correlating the relative placement and orientation on the XY plane. A shank 11 and an orienting means 12 are formed in the first type of mold, and since they are common to different molds, the shank 11 and the orienting means 12 are formed first, and the formed shank 11 and the orienting means 12, it is preferable to form a cutting edge pattern 13 unique to each mold. This is because a common mounting means can also be used for precisely associating the press effect pattern 13 with respect to the shank 11 and the orientation means 12. The flange 14 is automatically moved by making the total relative movement distance between the two discharge electrodes (shank, orientation means forming, and cutting edge pattern forming) and the blank smaller than the total length of the blank. is formed. Creating guide post insertion holes, discharge openings, etc. in these guide plates is as follows:
For example, it can be formed in a wire-cut electrical discharge machining machine, which is quite similar to the creation of the second type of mold 2 (described below). During this processing, none of the processing must be performed by the skill of a skilled engineer.

Manufacturing of the second type of mold: Second type of mold 2 (e.g. outline die)
is typically cut from a blank with a rectangular plate surface, e.g. by wire-cut electrical discharge machining equipment.
It is made in a similar manner as described for making the QDC mold. The difference is the cutting edge 22 of the die 2,
All of the plurality of small holes 24 to 29 are formed in advance, and their relative arrangement and orientation are specified with reference to a two-dimensional coordinate axis arbitrarily set on the plate surface (QDC). (In 1999, numerical specifications were made with respect to tangible criteria, such as the two sides of the blank, and the dowel pin holes were formed after adjusting the precise relative alignment of the mold set by the skill of a skilled engineer). In this way, the accuracy of the arrangement and orientation relationship between the holes can be created with an accuracy that depends on the accuracy of the processing equipment. During this processing,
There is no work that must be done by the skill of a skilled engineer.

Manufacture of stripper: Formation of stripper 3 (second type mold),
The formation of the first and second type mold holders 4 and 5 also includes
Various holes to be formed, namely, the press action part pattern 32 and the small holes 33 and 34, or a pair of location holes 51, a punched piece drop hole 52, and a plurality of small holes 54.
.about.59 are formed, respectively, and are therefore completely similar, and therefore will not be described in detail. The formation of each of these holes is based on a two-dimensional coordinate axis arbitrarily set on the plate surface of the blank, without using any tangible reference of the blank.
Different from the formation of corresponding parts in QDC. During this processing, none of the processing must be performed by the skill of a skilled engineer.

Thus, the outline punching die set shown in FIG. It is a three-piece set including a stripper 3, which is a one-piece machined from a plate-shaped blank, and which attaches a plurality of tightening screws and dowel pins or bolts to the first and second mold holders without the need for any finishing work. - Can be easily connected and fixed using nuts and elastic sleeves without requiring the skills of a skilled engineer.

In addition, in FIG. 1, the first type of mold holder is shown as one integral part, but
In fact, by making this into two plate-like parts at the level of the bottom surface of the mold positioning recess shown in dotted lines, each part can be made in a similar manner to the second type of mold.

Hole Punching [Drilling Mold Set] Figure 2 is a diagram showing the state in which the punching die set, which forms two small holes in a predetermined arrangement and orientation with respect to the outer shape of the blank, is attached to the press machine. It is a sectional view similar to. The mold set shown here is
Hole punch 1 (first type mold), hole punch die 2 (second type mold), stripper 3
(second type mold) and guide plate 8
(Second type of mold) This is a 4-piece set.

Hole Punch The punch 1 has a shank 11 and a key 12 at the base end, which have exactly the same dimensions and shape as the punch 1 of the specific example in FIG. 1, as shown by the dotted line in FIG. 2a (bottom view). A punch cutting edge pattern 13 is formed as a pair of thin protrusions at the tip in a predetermined arrangement and orientation relationship with respect to the shank 11 and the key 12. This relative arrangement and orientation relationship, the fitting relationship between the shank 11 and key 12 and the mold positioning recess 42 and key groove 43 in the first type mold holder, and the Mold positioning recess 42
Due to the relative arrangement and orientation relationship between the key 43 and the location hole 41, the hole punch 1 is uniquely positioned in the mold holder mounting portion 6 of the press device in the same manner as described above. In detail, key 1
For example, by aligning the shank 11 with the key groove 43 arranged laterally in FIG. It is uniquely positioned in a similar manner.

Hole Punching Die A top view of the punching die 2 is shown in Figure 2b, where the die cutting edge pattern 22 is formed as two small holes relative to each other to provide the desired clearance with respect to the cutting edge pattern 13 of the punch 1. It is arranged and formed. The plurality of small holes 24-29 are exactly the same as the small holes 24-29 in the second type mold holder 5 shown in FIG. 1e and the second type mold 2 shown in FIG. 1f. It is formed by arrangement and orientation. The relative arrangement and orientation relationship between the die cutting edge pattern 22 and the plurality of small holes 24 to 29 are
Small holes 24 to 29 and second type mold holder 59
alignment relationship with the plurality of small holes 54 to 59 in the second type mold holder;
Unique positioning of the press device to the mold holder attachment portion 6 is defined through the arrangement and orientation relationship between the press device and the location hole 51. Specifically, the small holes 24 to 29 of the die 2 and the small holes 54 to 59 of the second type mold holder are aligned, and two small holes arbitrarily selected from among the aligned small holes are formed. holes (for example, two small holes 24 facing each other with a cutting edge pattern in between,
24 and small holes 54, 54 aligned therewith), and then two arbitrarily selected small holes from the remaining small holes (for example, two small holes 25, 25 facing each other across the cutting edge pattern) and small hole 5 aligned with
All you have to do is drive the dowel pin into 5, 55).
In the illustrated embodiment, the die 2 and the second type mold holder 5 are shown arranged so that their small holes are aligned even when rotated through 90° with respect to each other (square shaped (located correspondingly on the edges). Therefore, the punch 1 and the first mold holder 4
If a different keyway is selected when connecting the die and the second type of mold holder, the cutting edge pattern of punch 1 and the die 2 can be matched by rotating the die and the second type of mold holder by 90 degrees and connecting them. It is possible to match the cutting edge pattern. If the first type of mold holder 4
If the two keyways 43 are formed at an angle of 60 degrees, for example, the plurality of small holes in the die 2 and the second type mold holder 5 are arranged at an angle of 60 degrees on the circumference. Just set it up.

Stripper Figure 2c shows a stripper 3 (a second type of mold) used in combination with the punch 1 of Figure 2a. The plurality of small holes 33', 34' are exactly the same as described with respect to FIG. 1g, and the small holes 49
It is formed to match. A press action part pattern 32 with a desired clearance with respect to the cutting edge pattern 13 of the punch 1 and the small holes 3 thereof.
3' and 34', the arrangement and orientation relationship of the punch 1 is determined by the connection between the small hole 49, the mold positioning recess 42, the key groove 43, and the shank and key of the punch 1 in the first type mold holder. Cutting blade pattern 13
The structure is formed in accordance with the arrangement and orientation relationship between the two.
The eyelets 33', 34' and eyelet 49 are thus aligned and four screws (not shown) and four elastic sleeves (two of which are shown in FIG. 2) are inserted. When mounted as shown in FIG. 2 using the punch 1, the press action portion patterns 32 are fitted and supported by the cutting edge pattern 13 of the punch 1.

Guide plate FIG. 2d is a plan view of the guide plate 8 (second type mold) used in combination with the die 2 shown in FIG. 2b. Multiple small holes 84
- 89 are formed in the same arrangement and orientation pattern as the small holes 54 - 59 in the second type mold holder 5, and the press action part pattern 82 (guide surface) is arranged arbitrarily in advance with respect to them. , are formed in an orientation relationship. The small holes in the guide plate 8 are aligned with the small holes 24 and 59 (4 each) in the second type mold holder 5 and the die 2, and the selected small holes are opened using a plurality of screws and dowel pins. When the guide plates 8 and 8 are connected together, the press action portion pattern 82 of the guide plate 8 is uniquely positioned with respect to the cutting edge pattern 22 of the die 2. In this specific example, the press action pattern 82 of the guide plate 8 allows the product formed by the mold set shown in Figures 1d, f, and g to be fixed in a predetermined manner with respect to the die 2 shown in Figure 2b. It is shown as a guide plate 8 for positioning in alignment and orientation.
Therefore, the plurality of small holes 8 in the guide plate 8
It is possible to change the hole punching position by changing the arrangement and orientation relationship of the press action part pattern 82 with respect to 4 to 89.

The method for manufacturing the above-mentioned four-piece set of molds is as follows:
1b to 1d, and 1f and 1g, and therefore the description thereof will be omitted.

[Complete punching mold set]

Figure 3 shows a mold as a total punching die for making a product in one press operation using both the outline punching and hole punching mold sets shown in Figures 1 and 2. It shows the set. This mold set is a point set including an outline punch/hole punch die 1, an outline punch die 2, a hole punch 1', a stripper 3, and a knockout plate 9.

Outline punch/hole punch die 1 Outline punch/hole punch die 1 includes parts 1b to d.
It is almost the same as the outline punch 1 shown in the figure, except that it has a die having a desired clearance with respect to the cutting edge pattern of the hole punch 1' (corresponding to the punch cutting edge pattern 13 in FIG. 2a). The cutting edge pattern 13 is formed on the punch surface, and the screw hole 10 shown in FIG. 1b is not formed.

Modification of the first type of mold holder The first type of mold holder 4' for attaching the outline punch 1 to the press device has a structure similar to that described in connection with FIGS. 1 and 2. , a hole 40' is formed for letting the punching scraps fall from the cutting edge pattern 13 of the punching die;
The only difference is that a screw hole for mounting the outline punch 1 is not formed.

Hole punch and first type mold holder Hole punch 1' and first type mold holder 4
is exactly the same as that shown in FIG.

Profile Cutting Die The profile cutting die 2 (second type mold) has a plurality of small holes (two of which are similar to the plurality of small holes 33', 34' in the stripper 3 shown in FIG. 2c). 23 is shown in FIG. 3) and a die cutting edge pattern 22 having a desired clearance with respect to the cutting edge pattern 22 of the contour punch/hole punch 1. These small holes are selected from a plurality of small holes (only two of which are shown in FIG. 3) in the first type mold holder 4 and in the knock-out plate 9 described below. The arrangement and orientation of the small holes (preferably four or more) are formed in exactly the same pattern. The relative arrangement and orientation relationship between these small holes and the die cutting edge pattern 22 is unique because the die cutting edge pattern 22 is connected to the die holder mounting portion of the press device via the first type of die holder 4. Specifies accurate positioning. In other words, the relative arrangement and orientation relationship between the plurality of small holes in the outline cutting die and the die cutting edge pattern can be arbitrarily defined.

Stripper The stripper 3 combined with the contour punch/hole punch die 1 is exactly the same as the stripper shown in FIG. 1 above.

Knockout Plate The knockout plate 9 for removing the punched product from the hole punch 1' is substantially identical to the stripper described in connection with FIG. 2 above.

Hole punch 1', punch out plate 9,
and the outline cutting die 2 in the order shown in the figure.
The mold holder 4 can be assembled into a mold holder 4 of the type described above, and can be connected using a plurality of screws and dowel pins in the same manner as described above without requiring the skill of a skilled engineer.

Combining a plurality of molds The outline punch/hole punch die 1 and the stripper 3 are assembled into the first type of mold holder 4' in the order shown in the diagram, and are skillfully assembled using a plurality of screws and knock pins similar to those described above. It can be combined without requiring the skill of a technician.

In the specific example shown in FIG. 3, only the outline punch/hole punch die 1 has some differences from the mold manufacturing method explained so far, and the other molds 1',
2', 3, and 9 differ only in the size and shape of the press action part pattern, and the manufacturing method thereof is the same as that described above. Therefore, the method for manufacturing the outline punch/hole punch die 1 will be described below.

Manufacturing of outline punch and hole punch die 1 The outline punch and hole punch die 1 has the cutting edge pattern 13 of the hole punch die formed on the end face of the cutting edge pattern of the outline punch, and the hole punch die has a cutting edge pattern 13. A bar is provided to drop the. The shank 11 and the key 12 are formed in the same manner as shown in FIG. It is attached to the electrode support part in a desired arrangement and orientation to form a Nibun. Turn the blank upside down and form the cutting edge pattern of the outline punch in the same manner as in the specific example of FIG. A punching die cutting edge pattern is formed by attaching the discharge electrode prepared in the blank to the electrode supporting portion in a desired arrangement and orientation relative to the shank and key formed on the blank. The process of creating a discharge electrode with protrusions is similar to machining the cutting edge pattern of a punch. Therefore, the method for manufacturing the outline punch and punching die 1 is basically the same as the method for manufacturing the punch shown in FIG.

[V bending mold set]

FIG. 4 shows a mold set for so-called V-bending or arrow bending. This mold set includes a first type mold 1, a second type mold 2, and a guide plate 8 (second type mold).
This is a three-piece set.

V-bending punch The first type of mold 1 (V-bending punch) is the same as the first type of mold described above except that the end surface of the press-acting part has a press-acting surface that projects in a V-shape. It is. Therefore, when forming the press action part pattern, the method is exactly the same as that described above except that a discharge electrode having a V-shaped concave discharge gap is used, which is necessary for forming the V-shaped press action part pattern. Ru.

V-bending die The second type of mold 2 is the same as that shown in FIG. This is the same as described for the die 2 in the specific example. This V-shaped recessed press working part pattern can be machined by a reverse electrical discharge machine after a plurality of small holes (two of which are shown) are formed by a wire cut electrical discharge machine. . The region where the V-shaped recess is to be formed is determined by forming a guide plate that positions the arrangement orientation of the plurality of small holes with respect to the guide plate of the reverse electrical discharge machining device (for example, by the machining device in the reverse direction); Blank (semi-finished product) positioned by the guide plate 8
A discharge electrode (having a desired discharge gap) projecting in a V-shape may be mounted on the electrode support.

Effects of the Invention The effects achieved by the present invention are as follows.

Effects of the mold set (1) The structure of each mold, which is the mainstay of the mold set, is made into a single component. (Effects of adopting a standardized general-purpose mold holder) (2) Eliminates the need for the work of assembling and fixing the multiple parts that make up each mold in a mold set using the skill of a skilled engineer. (Effects of adopting a standardized general-purpose mold holder) (3) Reduce mold manufacturing, transportation, and storage costs. (Effects of adopting a standardized general-purpose mold holder) (4) Eliminates the need for the skills of a skilled engineer when accurately attaching the press action part pattern of the mold to the attachment part of the press equipment. thing.

(5) The press working part pattern of related mold sets (for example, a punching mold set and a plurality of shaver mold sets) can be accurately determined with respect to the location pins of the press equipment without requiring the skills of a skilled engineer. It can be attached and worn.

(6) In multiple progressive lines and transfer lines, the press action part pattern of the mold set corresponding to the corresponding mold mounting part is precisely associated and installed with exactly the same arrangement and orientation regarding each location pin. What can be done. In doing so, the skills of skilled technicians are totally required within the city.

(7) When the mold set used for prototypes and small-scale production is installed on the press equipment, the arrangement and orientation of the working part pattern can be determined without requiring the skills of a skilled engineer. Made reproduction possible.

(8) If the molds of the second type are held in wide contact with the mold holder of the second type (e.g. Figures 1, 2 and 4), they To significantly reduce not only the material cost but also the processing cost by having a mold that is considerably thinner than conventional molds.

(9) Conventionally, when punching a narrow product with a complicated structure, a plurality of knockout hammers were designed and provided close to the part to be punched, but the present invention For example, a plurality of knockout hammers can be formed as a single knockout plate.

Effects of the manufacturing method of mold sets (1) It is possible to reproduce exactly the same mold set as the mold set used for trial production and small-scale production.

(2) Eliminating the need for the skills of a skilled engineer to manufacture the mold set.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a part of the related parts of a mold set for outline cutting according to the present invention and a press device, and FIG. 1a is a plan view of the first type of mold holder shown in FIG. 1b, 1c, and 1d are a plan view, a front view, and a bottom view of the first type of die (punch) shown in FIG. 1, and FIG. 1e is a
FIG. 1f is a plan view of the second type of mold holder shown in FIG. 1, FIG. 1f is a plan view of the second type of mold (die) shown in FIG. FIG. 1 is a plan view of the second type of mold (stripper), FIG. 2 is a sectional view showing a part of the related parts of the punching mold set and the press device according to the present invention, Figures 2a, 2b, 2c, and 2d are a bottom view of the hole punch (first type mold), a top view of the hole punch die (second type mold), and a stripper (second type mold), respectively. Plan view of the second type of mold) and guide plate (second type of mold)
FIG. 3 is a cross-sectional view showing a part of the related parts of the mold set for total punching according to the present invention and a press device, and FIG. It is a sectional view showing a part of related parts. Explanation of symbols 1, 1': 1st type of mold (punch, outline punch and punch die), 2,
3, 8, 9: second type mold (die, stripper, guide plate, knockout plate),
4, 4': first type mold holder, 5: second type
Type of mold holder, 6, 7: mold holder mounting part of press device.

Claims (1)

[Scope of Claims] 1. A pair of mold holder mounting parts 6, 7 guided so as to be relatively movable along one axis Z, and a pair of mold holder mounting parts 6, 7 arranged parallel to the axis Z in each mounting part. location pins 61, 71, and first and second type mold holders 4 and 5 having the following features, which are removably mounted in fixed positions by the pair of location pins 61 or 71. At least one selected pair of standardized general-purpose die holders; The holder 4 has a pair of location holes 41 and a mold positioning recess 42.
and an orientation means 43 as essential elements,
If necessary, a plurality of small holes 44 to 49 and/or a cutout drop hole 40' can be provided as additional elements, and the mutual arrangement of the pair of location holes 41,
The orientation corresponds to the pair of location pins 61 or 71 in the press device, the mold positioning recess 42 and the orientation means 43 have a predetermined arrangement and orientation relationship, and the plurality of small holes 44 ~49 The mutual arrangement and orientation are arbitrarily determined in advance, the dimensions and shape of the punched piece falling hole 40' are arbitrarily determined in advance, and the pair of location holes 41, the mold positioning recess 42 and the orientation The means 43, the plurality of small holes 44 to 49, and the punched piece drop hole 40' are arranged parallel to each other in the Z-axis direction perpendicular to the mold mounting surface (XY plane), and are arranged in advance on the mold mounting surface. (b) The second type of mold holder 5 has a pair of location holes 51 and a plurality of small holes 54 to 59.
as an essential element, and can have a punched piece drop hole 52 as an additional element if necessary, mutual arrangement of the pair of location holes 51,
The orientation corresponds to the pair of location pins 61 or 71 in the press device, the mutual arrangement and orientation of the plurality of small holes 54 to 59 are arbitrarily determined in advance, and the dimensions of the extraction drop hole 52 The shape is arbitrarily determined in advance, and the pair of location holes 51, the plurality of small holes 54 to 59, and the cut piece drop hole 52 are aligned with each other in the Z-axis direction perpendicular to the mold mounting surface (XY plane). (c) The above-mentioned simple press mold set includes at least one first type of metal. (d) said first type mold 1 has one axis Z;
, has a columnar shank 11 and an orientation means 12 at one end in the longitudinal axis direction, and has a press action part pattern 13 at the other end, and the shank 11 has a predetermined length along the first axis. The orienting means 12 cooperates with the orienting means 43 in the first type mold holder 4, and the orienting means 12 cooperates with the orienting means 43 in the first type mold holder 4. The orientation of the shank is determined, the press action part pattern 13 has a shape and size suitable for desired press working, and the press action part pattern 13 is arranged on a plane (XY plane) perpendicular to the central axis of the shank 11. The shank 11 and the orientation means 12 are formed in a desired arrangement and orientation, thereby allowing the press action part pattern 13 to be aligned with the pair of location holes 41 in the first type mold holder 4. (d) The second type of mold 2 has a plurality of small holes 2.
4 to 29 and a press action part pattern 22 as essential elements, and the arrangement and orientation of the plurality of small holes 24 to 29 are determined by the plurality of small holes 54 to 59 in the second type mold holder 5. The press working part pattern 22 is formed with the number, arrangement, and orientation corresponding to the selected plurality of small holes, and the press working part pattern 22 is formed by a desired press processing with respect to the press working part pattern 13 in the first type mold 1. The plurality of small holes 24 to 29 and the press action part pattern 22 have dimensions and shapes that are compatible with
arranged parallel to each other in the axial direction, and the first
Corresponding to the arrangement and orientation relationship of the press action part pattern 13 of the first type mold 1 with respect to the location hole 41 in the type mold holder, the relative arrangement and orientation relationship thereof are associated, and Therefore, the press action part pattern 22 is connected to the second type of mold holder 5.
be removably connected to the pair of location holes 51 in a desired arrangement and orientation relationship. 2 The shank 11 of the first type of mold 1 is a regular polygon (including a cylinder), and the orienting means 1
2 is a key groove formed on the peripheral edge of the mold positioning recess 42 of the mold holder 4 of the first type, or a key 12 or a key groove that closely fits into the key. A simple press mold set as described in Scope 1. 3 The first type mold 1 has a flange 14 between its shank 11 and the press action part, and the flange 14 is used to attach the first type mold holder 4 to the mold. A simple press mold set according to claim 1 or 2, characterized in that the mold set is supported by a surface. 4 at least one die 2 comprising at least one shearing punch 1 as a mold of the first type and having a cutting edge pattern 22 with a desired clearance with respect to the cutting edge pattern 13 of said punch;
A simple mold set for press according to any one of claims 1 to 3, which includes as the second type of mold. 5 The shearing punch 1 is an outline punch,
The second type mold 2 further includes at least one stripper 3, and the stripper 3 has a plurality of small holes 33, 34.
and a press action part pattern 32, and the arrangement and orientation of the plurality of small holes 33, 34 are determined by a plurality of small holes selected from the plurality of small holes 44 to 49 in the first type mold holder 4. The number, arrangement, and orientation correspond to the small holes, and the press action part pattern 32 is formed with a desired clearance with respect to the cutting edge pattern 13 of the outline punch, and the plurality of small holes 33, 34 and the press action part pattern 32 are the cutting edge patterns 13 of the outline punch connected to the first type mold holder 4 and the corresponding plurality in the first type mold holder. 5. The simple press mold set according to claim 4, wherein the mold set is formed to correspond to the arrangement and orientation of the small holes. 6 The second type mold 2 further includes at least one guide plate 8, and the guide plate 8 has a plurality of small holes 83, 84.
and a guide surface 82, the plurality of small holes 83, 84 having a number corresponding to the plurality of small holes selected from the plurality of small holes 53 to 59 in the second type mold holder 5, placement,
The guide surface 82 has a size and shape corresponding to the size and shape of the blank for press working, and the plurality of small holes 83 and 84 and the guide surface 82 correspond to the orientation.
Claim 4 is characterized in that it is arbitrarily determined so that the press working part pattern of other related molds and the press blank have a desired arrangement and orientation relationship. Or the simple press mold set described in item 5. 7 The hole punch 1 is included as the first type of die, and the at least one knockout plate 9 is further included as the second type of die 2, and the knockout plate 9 has a plurality of small holes 9.
3 and 94 and a press action part pattern 92, and the arrangement and orientation of the plurality of small holes 93 and 94 are selected from the plurality of small holes 44 to 49 in the first type mold holder 4. The number, arrangement, and orientation correspond to the plurality of small holes, and the press action part pattern 92 is given a desired clearance with respect to the cutting edge pattern 13 of the hole punch 1. The small holes 93, 94 and the press action part pattern 92 are a plurality of small holes selected from the plurality of small holes 44 to 49 in the first type mold holder 4 and the cutting edge pattern 13' of the hole punch.
The simple mold set for press according to claim 4 or 5, characterized in that it is formed in an arrangement and orientation corresponding to the above. 8. At least one bending punch 1 is included as the first type of mold, and at least one bending die 2 having a pressing surface having a desired clearance with respect to the pressing surface of the punch is used as the first type of die. Claim 1 is a set of simple molds for bending including two types of molds.
A simple press mold set according to any one of items 1 to 3. 9. At least one punch 1 for punching or bending is included as the first type of mold, and the blank for pressing is arranged and oriented in a desired manner with respect to the press working part pattern 13 of the punch for punching or bending. The second type of mold further includes a guide plate 8 having a positioning guide surface 82, the guide plate 8 having a plurality of small holes 54 to 59 selected from the plurality of small holes 54 to 59 in the second type mold holder 5. It has a plurality of small holes 83, 84 of a number, arrangement, and orientation corresponding to the plurality of small holes, and the plurality of small holes 83, 84 in the guide plate.
84 and a corresponding small hole (selected from 54 to 59) in the second type mold holder 5 are aligned and removably coupled by a plurality of coupling means. A simple press mold set according to claim 7 or 8. 10 A total punching machine that is attached to a press machine via the first type mold holder 4 and the first type mold holder 4' in which a punching piece drop hole 40' is formed in the mold positioning recess. This is a simple mold set for general punching, and the simple mold set for total punching includes a hole punch 1' having a desired press action part pattern 13'.
and a contour punch/hole punch die 1 having a desired press action part pattern as a first type mold, a contour punch die 2 and a stripper 3,
The hole punch 1' includes a knockout plate 9 as the second type of mold, and the hole punch 1' includes a shank 11' and an orientation means 12', and a hole cutting blade formed in an arbitrary arrangement and orientation relationship with respect to them. The knockout plate 9 has a plurality of small holes corresponding to the plurality of small holes selected from the plurality of small holes 44 to 49 of the first type mold holder 4, and a pattern 13'. Regarding the punching cutting edge pattern, shank 11', and orientation means 1 in the punching hole punch,
The mold positioning recess 42 in the first type mold holder 4 has an outer shape cutting cutting edge pattern 92 formed in accordance with the relative arrangement with the mold holder 2′, the relative arrangement determined by the orientation relationship, and the orientation relation. and the shank 11' of the hole punch 1' by means of orienting them 12' and 43.
The bolts are inserted into the plurality of small holes corresponding to the plurality of small holes in the outline punching die 2 and the plurality of small holes in the knockout plate 9, and then After each elastic sleeve is inserted into the bolt, the bolt is inserted into a corresponding small hole selected from a plurality of small holes in the first type mold holder 4, and then inserted into the hole of the hole punch 1'. By fitting the punching blade pattern and the press action part pattern of the knockout plate 9 and tightening each of the bolts with a nut, they can be removably connected. The shank 11 and the orientation means 12, the outline punch cutting edge pattern 13 formed in an arbitrary arrangement and orientation relationship with respect to them, and the punch cutting edge pattern 13', the shank and the orientation means with respect to the outline punch cutting edge pattern. The stripper 3 has a punching die cutting edge pattern 14 formed according to the relative placement and orientation determined by the relative placement and orientation relationship, and the stripper 3 is a mold holder of the first type having a hole for dropping the punched piece. A plurality of small holes having a number, arrangement, and orientation corresponding to the plurality of small holes selected from the plurality of small holes in 4', and corresponding to the cutting edge pattern of the contour punch and hole punch in the contour punch/hole punch die 1. After inserting bolts into each of the plurality of small holes in the stripper and inserting an elastic sleeve into the bolts, a punching piece falling hole 40' is formed in the mold positioning recess. The bolts are inserted into the corresponding small holes in the first type mold holder 4', and the outline punch cutting edge pattern of the outline punch/hole punch die 1 is aligned with the press action part pattern 32 of the stripper 3. The simple press according to any one of claims 1 to 3, which can be removably connected by tightening each of the bolts with a nut after the bolts are fitted together. Mold set. 11 A pair of mold holder mounting parts 6, 7 guided so as to be relatively movable along one axis Z, and a pair of location pins 61 arranged parallel to the axis Z in each mounting part. 71, (b) has a pair of location holes 41, a mold positioning recess 42, and an orientation means 43 as essential elements, and has a plurality of small holes 44 to 49 as necessary.
and/or may have a cutout drop hole 40' as an additional element, the mutual arrangement of the pair of location holes 41,
The orientation corresponds to the pair of location pins 61 or 71 in the press device, the mold positioning recess 42 and the orientation means 43 have a predetermined arrangement and orientation relationship, and the plurality of small holes 44 ~49 The mutual arrangement and orientation are arbitrarily determined in advance, the dimensions and shape of the punched piece falling hole 40' are arbitrarily determined in advance, and the pair of location holes 41, the mold positioning recess 42 and the orientation The means 43, the plurality of small holes 44 to 49, and the punched piece drop hole 40' are arranged parallel to each other in the Z-axis direction perpendicular to the mold mounting surface (XY plane), and are arranged in advance on the mold mounting surface. A first type mold holder standardized by arbitrarily determined relative arrangement and orientation, or (lo) having a pair of location holes 51 and a plurality of small holes 54 to 59 as essential elements, If necessary, the punched piece drop hole 52 can be provided as an additional element, and the mutual arrangement of the pair of location holes 51,
The orientation corresponds to the pair of location pins 61 or 71 in the press device, the mutual arrangement and orientation of the plurality of small holes 54 to 59 are arbitrarily determined in advance, and the dimensions of the extraction drop hole 52 The shape is arbitrarily determined in advance, and the pair of location holes 51, the plurality of small holes 54 to 59, and the cut piece drop hole 52 are aligned with each other in the Z-axis direction perpendicular to the mold mounting surface (XY plane). A simple press mold set mounted via a second type mold holder 5 arranged in parallel and standardized by a predetermined relative arrangement and orientation on the mold mounting surface. (a) preparing a columnar blank for the first type of mold; using a numerically controlled metal processing device at one end of the blank in the central axis Z direction; (a) forming the shank 11 and the orienting means 12 in the same manner as described above; (b) The orientation means 12 cooperates with the orientation means in the first type mold holder 4 to determine the orientation of the shank, and a numerically controlled metal is placed at the other end of the blank in the central axis Z direction. (c) Forming the press working part pattern 13 in the following manner using a processing device;
(b) Preparing a plate-shaped blank for the second type of mold; A plurality of small holes 24 to 29 and a press action part pattern 22; (d) Forming the above by providing coordinates and data that satisfy the following conditions with reference to a two-dimensional coordinate axis arbitrarily set on the plate surface of the blank using a numerically controlled metal processing device; The mutual arrangement and orientation of the plurality of small holes 24 to 29 correspond to the number, arrangement, and orientation of the plurality of small holes 54 to 59 selected in the second type mold holder 5. (E) The press action part pattern 22 has a size and shape suitable for performing the desired press working on the press action part pattern 13 in the first type mold 1; (F) The plurality of small The holes 24 to 29 and the press action part pattern 22 are arranged parallel to each other in the Z-axis direction perpendicular to the mounting surface (XY plane) to the second type mold holder 5; ) The relative arrangement and orientation of the plurality of small holes 24 to 29 and the press action part pattern 22 in the first type mold 1 with respect to the pair of location holes 41 in the first type mold holder Press action part pattern 13
to be related in accordance with the arrangement and orientation relationship of 12 The mold positioning recess 42 of the first type mold holder 4 is a recess having a regular polygonal (including circular) cross-sectional shape, and the orienting means 43 is a recess formed at the periphery of the recess. (a) The formation of the shank 11 and the orientation means 12 in the mold 1 of the first type is one key groove or key, and the formation of the shank 11 and the orientation means 12 in the mold holder of the first type is the same as the mold positioning recess 4 in the mold holder of the first type.
2 and a discharge electrode having a discharge opening having a predetermined discharge gap with respect to the cross-sectional dimension and shape of the key groove or key at the peripheral edge thereof, the 2 is arbitrarily set on the XY plane orthogonal to the Z axis of the blank. Forming by giving coordinates and data to a reverse electric discharge machining device with reference to a dimensional coordinate axis; (b) Formation of the press action part pattern 13 of the first type mold 1 is compatible with desired press processing. Using a discharge electrode having a discharge opening having a predetermined discharge gap in terms of size and shape, the discharge electrode is formed as described above with reference to a two-dimensional coordinate axis arbitrarily set on the XY plane orthogonal to the Z axis of the blank. claim 11, characterized in that the blank is formed by supplying coordinates and data to a reverse electric discharge machining device in relation to the arrangement and orientation of the blank determined by the shank 11 and the keyway or key. The method for manufacturing the simple press mold described above. 13 The orienting means 12 in the first type of mold 1 is a key, and the formation of the key is: (a) scheduled at a predetermined position where the shank 11 of the first type of mold blank is to be formed; forming a groove for key implantation with the formation of said shank 11 and having a depth and orientation thereof; and (b) implanting the key after said shank is formed. 13. A method for manufacturing a simple press mold according to item 12. 14 Formation of the second type of mold is performed by: (a) mounting a blank for the second type of mold in a wire-cut electric discharge machining device, and setting arbitrarily set two-dimensional coordinate axes on the surface of the blank; A plurality of small holes 24 to 29 and the press action part pattern 22 are marked as a reference, small holes are formed in each area in advance, and a discharge wire is inserted into these small holes to set the given coordinates, The press according to any one of claims 11 to 13, characterized in that the plurality of small holes 24 to 29 and the press action part pattern 22 are formed by inputting data. Manufacturing method of simple mold set. 15. A method for manufacturing a simple press mold set including a shearing punch as the first type of mold and a shearing die as the second type of mold, comprising: (a) the first type of mold set; forming a cutting edge pattern of a desired size and shape on the opposite end of the mold blank in a predetermined arrangement and orientation with respect to the orientation means formed on the blank; (b) the mold of the second type; A die cutting edge pattern having a desired clearance with respect to the size and shape of the cutting edge of the punch is formed on the die blank in a predetermined arrangement and orientation with respect to the plurality of small holes. Item 11~
A method for manufacturing a simple mold set with a press according to any one of item 14. 16 The second type of mold further includes a stripper having a press action part pattern corresponding to the cutting edge pattern of the shearing punch, (a) the stripper has a hole having a desired clearance with respect to the cutting edge pattern of the Dandan punch; 16. The method of manufacturing a simple mold set for press according to claim 15, characterized in that the stripper is formed in a desired arrangement and orientation with respect to a plurality of small holes formed in the stripper. 17 The second type of mold further includes a guide plate for guiding the press blank with respect to the cutting edge pattern of the shearing die, (a) the guide plate having a guide surface for guiding the press blank relative to the cutting edge pattern of the shearing die; The guide surface is formed in a desired arrangement and orientation relationship with respect to the plurality of small holes having the number and arrangement with respect to the plurality of small holes selected from the plurality of small holes of the second type of mold holder. Claim 15 or 16
A method for producing a simple mold set for presses as described in Section 1. 18 The second type of mold further includes a knockout plate corresponding to the cutting edge pattern of the shearing punch, (a) the knockout plate having a desired clearance with respect to the cutting edge pattern of the shearing pattern; Claim 12, characterized in that the small holes are formed in a predetermined arrangement and orientation with respect to the small holes formed in the knockout plate in a number and arrangement corresponding to a plurality of small holes selected from the small holes. A method for manufacturing a simple press mold set according to any one of items 1 to 17. 19 The first type of mold of the simple press mold set is a bending punch, and the second type of mold is a bending die, (a) Pressing action of the bending punch The pattern is formed by using a reverse electrical discharge machining device to machine the cross-sectional dimensions and shape in the XY plane perpendicular to the Z-axis using a discharge electrode having a discharge opening with a predetermined discharge gap, and then (b) The formation of the press action part pattern of the bending die is performed using a reverse electrical discharge machining machine. The cross-sectional size and shape of the cross-sectional shape in the plane perpendicular to the Z-axis is processed using a discharge electrode with a columnar cross-sectional shape having a predetermined discharge gap, and the tip of the discharge electrode is pressed with a punch for bending along the XY plane. 14. The method of manufacturing a simple press mold according to claim 11, wherein the method is carried out using a discharge electrode having a predetermined discharge gap with respect to a working surface pattern. 20 The first type of mold includes a hole punch 1' having a desired press action part pattern 13' and an outline punch and hole punch die 1 having a desired press action part pattern, and an outline punch die 2 having a desired press action part pattern.
In the method for manufacturing the complete punching die set including the stripper 3 and the knockout plate 9 as the second type of mold, the method for manufacturing the outline punch and hole punching die 1 is as follows: (a) (b) Using a numerically controlled metal processing device, a shank 11 and an orientation means 12 are prepared at one end of the blank in the central axis Z direction in the following manner. (a) The shank 11 has a complementary size and shape that can be fitted into the mold positioning recess 42 of the first type mold holder 4 without any play; (b) Orientation means 12 cooperates with the orientation means in the first type mold holder 4 to determine the orientation of the shank; (c) subsequently forming the punching die cutting edge pattern 14 in the following manner; ( C) The hole punching die cutting edge pattern (including the double punch) should have a size and shape that is suitable for performing the desired press working with respect to the cutting edge pattern of the hole punch 1'; (d) The hole punching die cutting edge determining the arrangement and orientation of the pattern in relation to a desired relationship with respect to the arrangement and orientation of the shank and orientation means; (d) using a numerically controlled metal processing device at the other end of the blank in the central axis Z direction; (e) Forming the outline punch cutting edge pattern 13 in the following manner; A method for manufacturing a simple press mold according to any one of claims 11 to 16, characterized in that: