JP3471982B2 - CAD / CAM data conversion system and NC processing system provided with the system - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a CAD / CAM data conversion system and an NC processing system provided with the system, and more particularly to a CAD / CAM data conversion system for converting CAD data for sheet metal into CAM data for NC processing. And an NC processing system including the system.

[0002]

2. Description of the Related Art Today, in the product design department, a CAD system is introduced in order to improve the efficiency of design work, and design data (CA) of a drawing image designed by a new drawing method is used.
(D data) is stored in an electronic file to store design resources. On the other hand, in the manufacturing department, while introducing NC machine tools to improve the manufacturing capability, we have developed an NC support system that automatically creates NC processing data (NC data) in accordance with manufacturing instructions, and is required for creating NC data. Various processing drawing number data (CAM data) is manually created and registered based on the printed drawing of CAD data.

Further, in the manufacturing department, it is necessary to perform N
A C machine tool is installed, and a system (NC group management system) for supplying NC data to these machines online is also in operation, and an NC processing line capable of manufacturing products without drawings is constructed.

[0004]

As described above, although the conventional drawing-less system has been promoted in each department, the manufacturing department still has a manual input based on the CAD data printed drawing because of the following problems. It is necessary to create and register the CAM data in the above, and it is the current situation that a great deal of labor and man-hours are spent on the creation and registration work of the CAM data and maintaining the accuracy of the data. (1) CAD data and CAM data are significantly different in content and format and are not compatible with each other.

That is, CAD data is data for generating a two-dimensional three-view image of an article and is useless unless it is displayed on a display or printed on a drawing. On the other hand, CA
The M data is the data that is the basis of the control of the processing machine, and the outer dimensions (NC cutting data) when the sheet metal parts drawn in the three views are developed on the substrate plane, and the hole information of circles and corners, It is data to which hole position coordinate information (NC hole punching data) and screw hole information (NC tap data) from the substrate origin and manufacturing auxiliary information such as know-how necessary for manufacturing are added. (2) Therefore, in order to convert CAD data into CAM data, a complicated and long conversion process is required, which requires a lot of manpower and time.

For example, with regard to drawing processing and round hole systems (screw holes, countersinks, etc.), CAD data are simply drawn with double circle lines, but with CAM data, numbers and processing for identifying hole types and processing are performed. It becomes complex data including the processing contents, dimensions, etc. according to the type. (3) In addition, CAD data must be correctly converted to CAM data through a complicated and long conversion process, which requires complicated work progress and data management. It must be strictly managed by a manual (ledger). If there is an error in C
If manufacturing is performed using AM data, a large number of defective products will be produced.

In view of the above problems, conventionally, it is necessary to manually create and register CAM data based on a printed drawing of CAM data, which requires a great deal of labor and man-hours to create, register, and maintain CAM data. I was running. The object of the present invention is to provide CAD
CAD that automatically converts data into CAM data without drawing
/ CAM data conversion system and N including the system
To provide a C processing system.

[0008]

The above-mentioned problems can be solved by the structure shown in FIG. That is, the CAD / CA of the present invention (1)
The M data conversion system 1 converts the CAD data for sheet metal into N
In the CAD / CAM data conversion system for converting CAM data for C processing, the CA of the two-dimensional projection image
A three-dimensional processing unit 11 for converting D data into CAD data of a three-dimensional stereoscopic image, and a development processing unit for converting CAD data of the three-dimensional stereoscopic image into CAD data of a two-dimensional development view image for developing on the plane of the substrate. 12, an NC data creation processing unit 13 that creates NC processing data by converting the processing portion into the data of the type and coordinates of the corresponding processing tool based on the CAD data of the two-dimensional developed image;
A CAM data creation processing unit 14 that creates CAM data by converting a part of data of the type and coordinates of the processing tool into data of corresponding holes and coordinates based on the processing data.

In the present invention (1), the three-dimensional processing unit 1
Reference numeral 1 converts CAD data of a two-dimensional projection image into CAD data of a three-dimensional stereoscopic image. The three-dimensional image of the sheet metal part can be easily obtained by combining the CAD data of each surface of the two-dimensional projection drawing image in a unit of a surface by a simple instruction from the outside. The development processing unit 12 converts the CAD data of the three-dimensional stereoscopic image into the CAD data of the two-dimensional development view image for developing on the plane of the substrate. The 2D development image of the sheet metal part is C, which is a 3D image.
The AD data can be easily obtained by expanding the AD data on a plane in plane units, for example, by a simple instruction from the outside. In that case,
Preferably, it is automatically expanded on the plane of the substrate in consideration of the shrinkage dimension generated in the substrate by bending.

The NC data creation processing unit 13 creates NC processed data by converting the processed portion into data of the type and coordinates of the corresponding processing tool based on the CAD data of the two-dimensional developed image. Based on the machining type information of the CAD data and the coordinate information of the machining portion, it is possible to convert the machining portion of any machining species into the corresponding machining tool type and coordinate data. Also,
By creating the NC processed data, the locus of the NC data can be displayed, and the correctness / error of the NC data, and thus the correctness / error of the main CAD data can be easily checked by the display image.

Then, the CAM data creation processing unit 14
Based on NC machining data, the part of the machining tool type and coordinate data is converted into corresponding hole and coordinate data and CA
Create M data. By the way, in the actual NC processing step, CAM data of a plurality of drawing numbers are dispersed and arranged on a common substrate, and so-called high-mix low-volume production is often performed. In this case, the NC support system 6 described later
For all NC orders of input, a processing method that emphasizes the degree of completion with a focus on the completion period, a processing method that minimizes mold replacement that reduces the number of mold replacements, and considers mold replacement and placement processing for each drawing number 1 One of the drawing number optimizing processing methods is grouped so that the processing efficiency is high, and optimal NC data is created for each group. Even in this case, since the CAM data creation processing unit 14 converts the NC machining data of the machining tool type and coordinates into the hole and coordinate data, the NC support system 6 determines the optimum type according to each machining method. It becomes possible to allocate.

Thus, according to the present invention (1), the design C
CAM data can be obtained from AD data without drawing. Therefore, problems such as complicated manual input work, product defect due to manual input error, and delay of CAM data registration work due to waiting for a printed drawing can be solved at once. Further, by cooperating with the NC support system 6, the NC machining group management unit 8 and the like, it is possible to consistently carry out work from design to product manufacturing by the CAD system without drawing.

Preferably, in the present invention (2), C
The hole data in the AM data is composed of a number for specifying the hole type and dimension information data. Therefore, the data structure of the CAM data is simplified, and desired NC data can be easily generated from the CAM data. Also preferably,
In the present invention (3), the pilot hole size generation processing unit that automatically generates the pilot hole size data at the time of manufacturing based on the hole type data of the round hole system included in the CAD data is provided. This allows
The round hole system elements included in the CAD data are converted into prepared hole dimensions according to the hole type required for actual machining.

Further, in the present invention (4), preferably, condition information for generating the prepared hole size is stored in an external file. For example, the material of the board, the plate thickness, the nominal diameter of the machined hole, etc. may or may not be used as a condition for generating the prepared hole dimension, and various parameters in the condition may be CAD.
It is stored in an external file accessible by the / CAM data conversion process. Therefore, even if the conditions change, you only have to rewrite the external file.
There is no need to change the AM data conversion processing program.

Further, in the present invention (5), preferably, there is provided a progress management processing unit 15 for performing the progress management of the CAD / CAM data conversion processing for each figure number of the CAD data. It records and holds the processing result of each processing to be processed in a predetermined order, the date when the processing is completed, and the time if necessary, and locks the processing so that it does not proceed to the next processing if the previous processing does not end normally. Hang Therefore, no human labor is required, the progress can be easily controlled, and the correct C
AM data resources are accumulated.

Preferably, in the present invention (6), the information on the progress is classified by drawing number, processing result, date,
Alternatively, a query processing unit 16 is provided that enables a query for each specific group. Therefore, advanced progress management can be easily performed. In the NC processing system of the present invention (7), the CAD / CAM data conversion system 1 of the present invention (1) arranged in the manufacturing department and the CAD system 2 in the remote design department are connected by the communication network 3. At the same time, the CAD data whose design has been completed is transmitted to the CAD / CAM data conversion system 1 online, and the CAD / CAM which has received the CAD data is received.
The data conversion system 1 converts into corresponding CAM data.

Therefore, the CAM data registration work can be started at the same time as the design is completed, and the time required for the start of manufacturing can be greatly shortened regardless of the physical distance between the design department and the manufacturing department. The NC processing system of the present invention (8) is the CAD / CAM data conversion system 1 of the present invention (1), and the CA processing system.
Display means 4 which can be connected to the D / CAM data conversion system 1 to display the locus of NC machining data, and manually input machining data consisting of hole and coordinate data of a machining portion based on a CAD data print drawing. And a graphic entry system 5 for creating CAM data for NC processing according to the above. The machining data input from the graphic entry system 5 is input to the CAD / CAM data conversion system 1 and the C in the CAD / CAM data conversion system 1 is input.
By reversely performing the processing of the AM data creation processing unit 14, the input processing data is converted into NC processing data including data of the type and coordinates of the processing tool , and the locus of the NC processing data is displayed.

The figure entry system 5 manually inputs the machining data consisting of the hole and coordinate data of the machining portion on the basis of the CAD data printed drawing, thereby performing the predetermined compiling work to generate the CAM data for NC machining. create. By the way, generally, the processing data input by the operator is close to the CAM data (comparable relatively easily), and considering the processing load of the operator, N
The graphic entry system 5 alone does not generate the C processed data and check the trajectory display thereof.

However, according to the present invention (8), the machining data input from the figure entry system 5 is CAD / CA.
While inputting to the M data conversion system 1, the CAD /
Since the input machining data is converted into NC machining data consisting of machining tool type and coordinate data by reversing the processing of the CAM data generation processing unit 14 in the CAM data conversion system 1, the graphic entry system 5 generates it. With respect to the registered CAM data, the locus display check of NC processed data can be easily performed. Therefore, the correct CAM data resource can be stored.

Preferably, in the present invention (9), for each of all NC orders of input, a turn is obtained for each, and the turn is compared with a reference value, and (turn) <(reference value) The NC order is set as a group for express processing and the other groups are set as a group for normal processing, and the CA provided by the CAD / CAM data conversion system 1 or the graphic entry system 5 is provided.
Based on M data, a processing method that emphasizes the completion period, a processing method that emphasizes the degree of completion, a processing method that minimizes mold replacement that reduces the number of mold replacements, and a mold replacement and placement process for each drawing N to create corresponding NC data by grouping any of the number-optimizing processing methods so that the processing efficiency is high.
The C support system 6 is provided, and the NC support system 6 allocates the optimum machining tool type information corresponding to each machining method to the CAM data from the CAD / CAM data conversion system 1 or the graphic entry system 4. . Therefore, efficient processing can be easily obtained. Claim 8
NC processing system.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 2 shows N according to the embodiment.
It is a figure which shows the structure of C processing system. In the figure, a remote design department and a manufacturing department are connected via a dedicated or public communication network, and CAD data is delivered online according to a predetermined communication protocol (for example, TCP / IP).

That is, in the design department, the designer of the product (sheet metal parts, etc.) is required to design the CAD system (CADA) every day.
M) is used to design new and revised CAD data based on a two-dimensional three-view drawing image, and approval is obtained for each drawing number and registered in a registration file. The CAD data of the registration file is read out at regular or urgent requests from the manufacturing department and sent to the CAD / CAM data conversion system on the manufacturing side via the communication interface (CIF). At that time, if necessary, a CAD system (MICR) on the manufacturing side can be created by a data format conversion tool (DIFU) (not shown).
The format is converted to CAD data compatible with O-CADAM).

The CAD data of the registration file may be printed on a drawing by a printer (PRN) and sent as a drawing. This drawing is used in the graphic entry system described below. Alternatively, the CAD data received by the CAD / CAM data conversion system may be printed on a drawing by a printer (PRN) and sent to the figure entry system. The manufacturing department basically handles order sheet information (O / S) from user production.
To produce the required number of products in the required period in accordance with.

That is, the mechanism production management system is a main interface in the manufacturing department, accepts all order sheets from user production, and performs edit processing such as grouping the same drawing number to perform mechanism flow control. Pass the order sheet information in units of manufacturing to the system. Further, when the progress information report is received from the mechanism flow control system and it is judged that the manufacturing is completed, the notification to that effect is returned to the user production.

In accordance with the order sheet information from the mechanism production management system, the mechanism flow control system generates NC order information of which drawing number, by what time, how many items should be made, and passes it to the NC support system. On the other hand, the figure entry system is basically the same as the conventional one, and based on the CAD data print drawing, manual / manual input from a console (CSL) including a display and a keyboard is used to create and update new and revised CAM data. Register.

Further, the CAD / CAM data conversion system is a CAD system having a communication interface processing (CIF) for receiving and managing CAD data and processing compatibility with the design CAD system. Image design Manufacturing CAD system that can process CAD data (MICRO-CADAM) and NC data creation tool (MAGMA) with 2D / 3D conversion function
And a CAM data conversion tool (S family) that performs automatic CAM conversion of NC data, and a progress management process that manages the progress (progress) of each of these processes. Designing a two-dimensional three-view image CAD data is directly input, and it is converted into CAM data automatically and reliably under the progress management without intervention of drawings and manual input as in the graphic entry system.

In this case, the progress management records and saves the result of each process, the date, and the time for each drawing number, and updates the progress flag at the same time. If the worker does not follow the procedure,
If an error occurs during the work of the previous process, the process is systematically locked so that the work of the next step cannot be performed. Further, the progress information obtained in each process is stored in a relational database format, and it is possible to inquire and print for each group (communication transfer cycle), each individual (drawing number), each process, each result (error, etc.).

A console (CSL) including a graphic display, a keyboard, a mouse and the like is connected to the CAD / CAM data conversion system, and an operator uses the console to inquire about drawings and trace NC data. You can check the image of the display. The NC support system obtains a turn for each of all NC orders from the mechanism flow control system, compares the turn with a reference value, and sets the NC order of (turn) <(reference value) in a group for express processing. In addition to the normal processing group other than the above, based on the CAM data for each drawing number provided by the CAD / CAM data conversion system or the graphic entry system, a processing method that emphasizes the completion period, Either the machining method that minimizes the die exchange with a reduced number of die exchanges, or the 1 die optimization method that considers die exchange and placement processing for each drawing number Divide into groups. Then, the machining die (machining tool) and its coordinate information are assigned to the CAM data (having information on the machining hole and its coordinates) from the CAD / CAM data conversion system or the graphic entry system, and the optimum NC data for each group is assigned. To create.

Further, this manufacturing department is provided with a mechanical LAN network, and the above control / processing systems and the following various processing machines are connected online via the network. Each processing machine is connected to the mechanism LAN network via the cell controller, and each cell controller performs NC drive control of the corresponding processing machine according to the NC data and returns processing state information.

In this NC machining system, the part of the primary machining step of the sheet metal part is automated without drawing, and this part is the object of NC machining group management. This primary processing step includes a hole punching machine that forms a hole of a predetermined shape and size at a predetermined position on the board, a tapping machine that taps screw holes, and a cutting machine that cuts the board to a predetermined size. And a bending machine for bending the substrate at a predetermined angle.

Furthermore, a spot welding machine for spot welding between substrates and a processing machine for exterior (painting, plating, character spraying, etc.) are arranged in the order of steps, and mass production of products or multi-product production is carried out through all steps. Small-volume production is performed efficiently. Figure 3
8 are diagrams (1) to (6) for explaining the operation of the CAD / CAM data conversion system according to the embodiment.

FIG. 3 shows CAD data online transmission / reception processing between a remote design department and a manufacturing department. In step D01, the designer in the design department designs the CAD data such as new or revised every day. In step D02, C is obtained after approval of the designed CAD data.
It is registered in the file of AD data, and in step D03, the drawing number information is additionally registered in the file of the transmission drawing number list (drawing number list).

In the manufacturing department, in step R01, the process of extracting the design side drawing number list is started periodically (for example, daily AM 10:00, PM 3:00) to request the drawing number list to the designing side, and in the receiving state. wait. In case of emergency, you can access it at any time. Upon receiving the request for the drawing number list, the designer adjusts the new and revised (not sent) drawing number list in step T01 and sends it in file units.
When the transmission is completed, the drawing number list updating process is started in step T02, and the date and time are written in the drawing number list transmission date column of the transmitted drawing number list.

Upon receipt of the drawing number list, the manufacturing side processes the drawing number list in step R02. That is,
Select the desired drawing number and delete the unnecessary drawing numbers. Also,
If necessary, enter the desired figure number separately. Step R
In 03, the own drawing number list file is updated with the processed drawing number list information, and in step R04, CAD data is requested in the processed drawing number list (drawing number, version number).

Upon receiving the request for CAD data, the designer extracts the CAD data matching the required drawing number list from the CAD master and transmits it in step T03.
At that time, in order to obtain data compatibility with the manufacturing CAD system, the data is converted into a predetermined data format if necessary. When the transmission is completed, CA is executed in step T04.
The update process of the D data is started, and the date and time are written in the data transmission date column of the transmitted CAD data drawing number. if,
If there is no same drawing number, only the sending date of the CAD data is written in the drawing number list, and additional writing to that effect is performed. In step T05, the date specified in the compression period file is compared with the drawing number list transmission date or the CAD data transmission date, and the drawing number list exceeding the retention period is compressed.

On the other hand, the manufacturing side updates its own CAD data file in step R05 upon receiving the CAD data. Also, a CAD data delivery file for use in the subsequent CAD / CAM data conversion processing is generated. Although not shown, the manufacturing side also performs the same compression process of the drawing number list as on the designing side. As described above, the design side registers the information in which the CAD data is newly registered or revised in the design side drawing number list file and manages it, so that the latest version of the CAD data can be transmitted to the manufacturing side without any mistake. On the other hand, the manufacturing side can check the version numbers of the design drawing number list file and the CAM data at the time of receiving the manufacturing order, so that it is possible to prevent a manufacturing error due to a difference in the version numbers.

In the progress management, the progress flag is initially set to the initial value "00" and is updated to "01" when the drawing number list is received. Furthermore, when the drawing number list file is updated, it is updated to "02", and when CAD data is received thereafter, it is updated to "03". Further, when the CAD data file is updated and the compression processing of the drawing number list is completed, it is updated to "04".

FIG. 4 shows a manufacturing CAD system (MICRO-
CADAM)) design tool interface processing (preprocessing of CAD data). Step S0
In No. 1, the round hole system element conversion process is started, and based on the CAD data of the delivery file and the round hole system conversion master (hole type dimension conversion table TB1 in FIG. 11), the round hole system of the CAD data (round hole system) , Screw holes, countersunk holes, counterbored holes, crimp holes, burring, drawing, etc.) are automatically converted into special special hole shapes that are easy for operators to identify.

Generally, in CAD data, both screw holes and countersinks are represented by simple double circle shapes. On the other hand, the NC data for these is closely related to the machining shape (prepared hole diameter D1, modeling dimension D2 for screw holes, head diameter D1, prepared hole diameter D2, depth D3, etc. for standard countersink holes). Related to this, for example, when performing an image check of NC data on a display, it is preferable to have a special hole shape for exclusive use so that a screw hole and a countersink can be easily distinguished at first glance. Therefore, round hole system element conversion processing is performed.

FIGS. 14 to 19 are diagrams (1) to (6) for explaining the mode of round hole conversion according to the embodiment. In each figure, CAM is obtained from CAD data for caulking holes to counterbore holes.
The conversion method to the data and the conversion shape of the special hole are shown in a table format. However, each transformed shape does not represent the processed shape itself, but rather, in order to easily distinguish a large number of processed shapes, each converted shape is appropriately symbolized so that no overlap occurs between the respective shapes. . In the following description, please refer to FIG. 14 to FIG. 19 as appropriate.

The round hole system element conversion processing will be specifically described below. Read the CAD data of the delivery file one by one. FIG. 22 shows an example of CAD data. Drawing is performed with actual dimensions, and 3 to 6 views are drawn according to the shape of the design. The outline and holes are in a single stroke. For the round hole system that becomes a double circle in the drawing display, see DETAI separately.
A column of L1 is provided, and text data for specifying a round hole system (processing type) is added to this column. For example,
Is a screw hole and is described as NEJI-M2.3. M
2.3 is the nominal diameter. Or it is a standard countersink (front surface) and is described as SARA-M3 OMOTE. M3 is the nominal diameter.

[0042] Further, DET in which square holes and round holes are individually expressed
There is a column of AIL (child drawing) 2, in which detailed information such as a processing type is added. The CAD data also includes other information such as material and plate thickness. Read the text data of DETAIL1. The hole type dimension conversion table TB1 of FIG. 11 is referred to by the text data, and the hole type dimension D necessary for generating the conversion shape is set.
1 to D3 are read.

For example, in the case of a screw hole, the conditions for conversion are material = steel plate, plate thickness = 0.8 mm, nominal diameter = M2.3, etc., and finally the prepared hole diameter D1 = 1900 (however, 10
(Multiplied by 00) is read. Further, in the case of a screw hole, the modeling dimension D2 = D1 / 2. Generates a special transformation shape of round hole type. 23 and 24
Shows the conversion mode.

In FIG. 23, FIG. 23 (A) shows a special shape of the screw hole generated by the conversion. The shape is composed of a combination of line segments A to H, and each line segment A to H is automatically generated by the calculation of FIG. here,
D1 = prepared hole diameter, D2 = D1 / 2. For example, the line A is a plot between two points (X ₁ , Y ₁ ) and (X ₂ , Y ₂ ), and the coordinates of the two points are X ₁ = −D1 / 2, Y _{1
= D2 / 2, X 2 =} 0, obtained by Y ₂ = D1 / _2.
The same applies to the other lines B to H.

In FIG. 24, FIG. 24 (A) shows a special shape of the standard countersink (front) generated by the conversion.
The shape consists of a combination of line segments A to G, and each line segment A
˜G are automatically generated by the calculation of FIG.
Here, D1 = head diameter, D2 = prepared hole diameter, D3 = depth. For example, the line A has two points (X ₁ , Y ₁ ), (X ₂ ,
Y ₂ ) is plotted, and the coordinates of the two points are
_{X 1 = -D1 / 2, Y} 1 = D3, X 2 = 0, Y 2 = D1
Calculated by / 2. The same applies to the other lines B to G.

FIG. 24C shows a formula for generating a semicircle portion of the base of the conversion shape in the case of the standard countersink (back surface). For the shape to be generated, see the standard countersink (back side) column in FIG. The corresponding shape after DETAIL2 is rewritten with the above-mentioned round hole special shape. The CAD data of the delivery file is rewritten with the converted shape data obtained as described above.

In step S02, the C of the delivery file is
Drawing elements such as drawing number, version number, material, plate thickness, scale, etc. are extracted from the AD data and stored in a drawing element file. In step S03, the CAD frame of the delivery file is converted into a drawing frame,
A graphic element consisting of a graphic, a dimension line, etc. is extracted and written in a temporary graphic element file. In addition, bending correction value data (sheet thickness, shrinkage allowance, etc.) according to the material, plate thickness, etc. is extracted from the bend correction value file and written in a temporary bending correction value file.

In step S04, the drawing frame, dimension line, etc. are deleted from the CAD data of the temporary graphic element file. In step S05, under the processing of the DXF data format conversion tool (MCX), the CAD data of the temporary graphic element file is converted to the CAD data of the DXF data format in order to obtain processing compatibility with the NC data creation tool (MAGMA) described later. Convert it to DXF
Output to the graphic element file of the format.

At this time, the dimension line, the dimension lead line, etc. may be deleted. In the progress management, the progress flag is initially set to the initial value "10", and is updated to "11" when the round hole system element conversion is completed. Furthermore, when the drawing element is extracted, it is updated to "12", and when the graphic element extraction and the bending correction value extraction are completed thereafter, it is updated to "13". Furthermore, when the frame and dimension line are deleted, the value is updated to "14", and when the conversion to DXF data format is completed, "1" is set.
5 ”is updated.

FIG. 5 shows 3 of CAD data in DXF data format.
The dimensional three-dimensional processing and the expansion processing for automatically expanding the three-dimensional processing on the substrate plane are shown. In step S06, based on the CAD data in the DXF data format and the file of the bending correction value depending on the plate thickness and the material, the first three-dimensional processing 1 is performed in the interactive mode, and the obtained three-dimensional model 1 is temporarily stored. Output to 3D element 1 file.

FIG. 25A shows an example of a stereo model. By inputting a simple instruction as to which side of each surface is to be joined, three-dimensionalization can be easily achieved. In step S07, the first expansion processing 1 is performed based on the obtained stereo model 1, and the obtained expansion data 1 is output to the temporary expansion element 1 file. An example of the expanded data 1 is shown in FIG. The surface dimensions of each surface, the presence / absence of cutting / joining (bending), and the bending type (bending direction, angle, etc.) are automatically obtained from the CAD data of the solid model 1. Bending correction value data for each plate thickness and material is automatically added to this.

Then, the center coordinates of each processed hole from the substrate origin (deployment origin) are calculated from the surface dimensions of each surface and the shrinkage dimension due to bending obtained from the bending type, and the coordinates are automatically developed on the substrate. In addition, the maximum external dimension of the board that incorporates the surface dimension of each surface and the shrinkage dimension due to bending from the bending type is automatically calculated. Since the original CAD data may include an error, it is preferable that an image of a machined hole protruding from the board outline from the board outline obtained above and the center coordinates of the machined hole from the substrate origin. Check.
Also, by having the origin of each surface as absolute coordinates from the substrate origin, it is possible to easily perform an image check of the protrusion of the machined hole in each surface.

Further, in the present embodiment, the end surface processed portion of the expanded data 1 is treated as hole data (hole punching), so this portion is manually added as hole data and the process returns to step S06. In step S06, the second three-dimensional processing 2 is performed, and the result is output to the temporary three-dimensional element 2 file.

In step S07, the second expansion processing 2 is performed in consideration of the hole data of the end face processed portion, and the acquired expansion data 2 is output to the expansion element 2 file. In the progress management, the progress flag is initially set to the initial value "20", and is updated to "21" when CAD data in DXF format is input. Furthermore, when the three-dimensional processing 1 is completed, it is updated to "22", and when the subsequent expansion processing 1 is completed, it is updated to "23". Furthermore, if the end face machining hole information is added, "24"
Will be updated. Furthermore, when the stereoscopic processing 2 ends, "25"
And is updated to "26" when the subsequent expansion processing 2 is completed.

FIG. 6 shows the NC data creation process. In step S08, the round hole type special shape is converted into special type data based on the data of the expansion element 2 and the special type conversion table TB2 of FIG. In FIG. 12, for example, a round hole type special putter shape = 700 and a blind hole of D1 = 1900 has a model number = 4.
It is converted into type data (NC data) of 002, P1 = 1900.

In this case, the special type of the round hole type and the type for end face machining are registered in the type number classified as the standard type.
FIG. 20A shows a model number band calculation formula for each shape. Here, B is an initial value, N is the number of molds, and S is a correction value. FIG. 20B shows a variable table of standard shape numbers.

Further, FIG. 21A shows a variable table of round hole system conversion shape numbers, and FIG. 21B shows a variable table of provisional processing conversion shape numbers. In FIG. 21A, for example, a screw hole with a shape number of 700 belongs to the model number bands 4001 to 4020 according to the above calculation formula. Step S0
At 9, if necessary, the mold and trajectory obtained above are displayed on a display, and the NC data is checked with a display image.

FIG. 26A shows a display example of NC data. In the figure, circles (1) to (12) represent display images of NC data (type data). In step S10, NC processed data (NC type data, NC coordinate data) is created and output to the NC data file. In the progress management, the progress flag is initially set to the initial value "30", and is updated to "31" when the creation of the NC data is completed. Furthermore, when NC data is output to a file, it is updated to "32".

FIG. 7 shows the CAM automatic processing. N
When the C data can be confirmed, the data is returned to the CAM data (machined hole and its coordinate data). If you use CAM data,
The NC support system can allocate an optimum die (single punching die / passing die, etc.) according to the machining method each time, and can schedule the NC control efficiently. Less than,
This process will be described.

In step S11, the special hole type is automatically converted into the special hole information of the CAM data on the basis of the NC processed data and the restoration type conversion table TB3 shown in FIG.
In FIG. 13, for example, model number = 4002, mold size P1
The screw hole of = 1900 is converted into CAM data of machined shape number = 5 and machined shape dimension K1 = 1900. By the way,
In the figure entry system, for example, in the case of a screw hole, the machining data such as the machining shape number = 5 and the machining shape dimension K1 = 1900 is manually input while looking at the CAD data print drawing.

In step S12, CAM data processing information (hole information and expanded coordinate values) is automatically created based on the MAGMA NC processing data. In step S13, the end surface processing portion such as the corner cutting and the notch is internally processed (punching).
End face processing is performed. In that case, the optimum type for end face processing is automatically selected and assigned.

FIG. 26B shows a display example of CAM data after the end face processing. Here, the screw pilot hole shape “⋄” in FIG. 26A is restored to the symbol “◯” of the CAM data. In step S14, the correction of the outer dimensions associated with the end face processing and the coordinate correction when the origin is changed are automatically processed.

In step S15, basic information (drawing elements such as drawing number, version number, material, etc.) of the CAM data is automatically created based on the text data. In step S16, external dimensions, material, plate thickness, etc. and special processing information (end surface processing, drawing,
Manufacturing auxiliary information (NC processing machine instructions, processing route, substrate size, etc.) is automatically set based on (round hole processing, etc.) and output to a CAM data file.

In this way, based on various information obtained in the above series of processing for converting CAD data into CAM data and the setting condition master, manufacturing auxiliary information for NC machining which has conventionally relied on manual input is automatically set. it can. In the progress management, the progress flag is initially set to the initial value "40", and is updated to "41" when the round hole system restoration is performed.
Furthermore, when the end face processing is performed, the value is updated to "42", and when the origin change and coordinate correction are performed, the value is updated to "43". Furthermore,
When drawing elements are combined, the value is updated to "44", and when manufacturing auxiliary information is set, the value is updated to "45".

FIG. 8 shows the manufacturing auxiliary information confirmation processing using the figure entry system. In step S17, the information such as manufacturing know-how is manually input in the interactive mode, and the CA
Complete the creation of the necessary items as M data. Since information such as manufacturing know-how is difficult to automatically process, the function of the graphic entry system is used. In step S18, the format check function of the manually input processed data in the figure entry system is used to check the format of the CAM data.

In step S19, the coordinates are similarly checked, and if there is no error, they are finally registered as CAM data. In the progress management, the progress flag is initially set to the initial value "50", and is updated to "51" when the CAM data is read. Furthermore, when the format check is completed, it is updated to "52", and when the coordinate check is completed, "5" is displayed.
3 ”is updated.

9 and 10 are diagrams (1) and (2) for explaining the operation of the graphic entry system according to the embodiment. In this embodiment, the C manually registered based on the drawing is registered.
An image check is performed on the AM data using the NC data locus display function of the CAD / CAM data conversion system. Therefore, highly accurate CAM data can be generated even in the graphic entry system. The details will be described below.

In FIG. 9, in step I01, a surface grid of a machining command is input. Specifically, CAD
Each side (cell) of the sheet metal part printed with the drawing by data
Is associated with each cell number (A2, B1 to B3, C2) of the matrix composed of a plurality of cells in FIG. 9A, and the shape and dimensions of the processed holes (holes, taps, etc.) on each surface,
The coordinates (X, Y) from the origin of the cell to the center of the processed hole are manually input by the processing command (text command).

In step I02, the automatic expansion command is input to obtain the bending correction value master from the input information for each cell in the X and Y directions indicated by the automatic expansion command and the bending type. The center coordinates of each machined hole from the substrate origin are calculated based on the shrinkage due to bending, and the machined hole is automatically developed on the substrate. Further, the maximum external dimension of the substrate, which incorporates the instructed surface dimensions in the X and Y directions and the shrinkage dimension due to bending from the bending type, is automatically calculated.

In step I03, the end face machining hole information is input so that the end face machining parts (A1, A3, C1, C3, etc.) of the part are subjected to punching. 9B to 9C show end face processing holes. In step 104, the substrate origin is changed and the substrate external dimensions are changed so that the end face processing holes to are included in the substrate.

In FIG. 10, in step I05, mold data is created based on the hole information, and the center position of the hole from the substrate origin is converted into XY coordinate values. It should be noted that this process can be realized by utilizing the process of step S11 of the CAD / CAM data conversion system of FIG. 7 and reversing the process in reverse. This is table TB3 in FIG.
This can be easily done by reversing.

FIG. 10 (A) shows a mode of type conversion of hole data. In the figure, circles (1) to (9) represent once-out type data, and circles (10) to (13). ) Indicates overtaking type data. In step I06, NC processed data is automatically created and output to an NC data file (NC type data, NC coordinate data) under the MAGMA environment.

In step I07, under the environment of the MAGMA system, the NC display data locus display function is used, and the NC data generated by the graphic entry system is externally designated one by one by drawing to perform an image check. Figure 10
(B) shows a mode of NC data locus display. Step I
In 08, if the presence / absence of a defective portion is inspected, and if there is a defective portion and the correction is performed as it is under the environment of the MAGMA system, the processing of step S08 in FIG.
The process of converting CAD data to CAM data is traced back, and the data is corrected. Then, the corrected data is converted into type information and XY coordinate information.

Further, necessary processing (including processing of the S family) after step S09 is operated according to the procedure, and the locus is displayed again at step I07 to perform the image check. If there is no defective portion, it is 2 in step I08.
Dimension expansion and manufacturing auxiliary information processing are performed, and CAM data is output. The above-mentioned progress management shows an example, and the present invention is not limited to this.

Although the preferred embodiments of the present invention have been described above, it is needless to say that various changes can be made to the configuration, control, and combinations thereof without departing from the spirit of the present invention.

[0076]

As described above, according to the present invention, the design C
CAM data for NC processing can be obtained from AD data without drawing. Therefore, complicated manual input work of machining data, product defect due to manual input error, and C due to waiting for printed drawings
Problems such as delay in AM data registration work can be solved at once.

Further, by cooperating with the NC support system, NC machining group management system, etc., it is possible to consistently carry out work from CAD design to product machining without drawing.
It greatly contributes to labor saving and efficiency improvement of the C processing system.

[Brief description of drawings]

FIG. 1 is a diagram illustrating the principle of the present invention.

FIG. 2 is a diagram showing a configuration of an NC processing system according to an embodiment.

FIG. 3 is a diagram (1) for explaining the operation of the CAD / CAM data conversion system according to the embodiment.

FIG. 4 is a diagram (2) explaining the operation of the CAD / CAM data conversion system according to the embodiment.

FIG. 5 is a diagram (3) explaining the operation of the CAD / CAM data conversion system according to the embodiment.

FIG. 6 is a diagram (4) explaining the operation of the CAD / CAM data conversion system according to the embodiment.

FIG. 7 is a diagram (5) explaining the operation of the CAD / CAM data conversion system according to the embodiment.

FIG. 8 is a diagram (6) explaining the operation of the CAD / CAM data conversion system according to the embodiment.

FIG. 9 is a diagram (1) explaining the operation of the graphic entry system according to the embodiment.

FIG. 10 is a diagram (2) explaining the operation of the graphic entry system according to the embodiment.

FIG. 11 is a hole type dimension conversion table T according to the embodiment.
It is a figure which shows B1.

FIG. 12 is a special type conversion table TB2 according to the embodiment.
FIG.

FIG. 13 is a diagram showing a restoration type conversion table TB according to the embodiment.
It is a figure which shows 3.

FIG. 14 is a diagram (1) illustrating a mode of round hole conversion according to the embodiment.

FIG. 15 is a diagram (2) illustrating a mode of round hole conversion according to the embodiment.

FIG. 16 is a diagram (3) illustrating a mode of round hole conversion according to the embodiment.

FIG. 17 is a diagram (4) illustrating a mode of round hole conversion according to the embodiment.

FIG. 18 is a diagram (5) illustrating a mode of round hole conversion according to the embodiment.

FIG. 19 is a diagram (6) illustrating a mode of round hole conversion according to the embodiment.

FIG. 20 is a diagram (1) illustrating type conversion according to the embodiment.
Is.

FIG. 21 is a diagram (2) illustrating type conversion according to the embodiment.
Is.

FIG. 22 is a diagram (1) for explaining CAD / CAM data conversion processing according to the embodiment.

FIG. 23 is a diagram (2) for explaining CAD / CAM data conversion processing according to the embodiment.

FIG. 24 is a diagram (3) for explaining the CAD / CAM data conversion processing according to the embodiment.

FIG. 25 is a diagram (4) for explaining CAD / CAM data conversion processing according to the embodiment.

FIG. 26 is a diagram (5) for explaining the CAD / CAM data conversion processing according to the embodiment.

[Explanation of symbols]

1 CAD / CAM data conversion system 2 CAD system 3 communication network 4 Display means 5 Graphic entry system 6 NC support system 7 mechanism LAN network 8 NC machining group management department

Front page continued (72) Inventor Maki Kitajima 1015 Kamiodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa Within Fujitsu Limited (72) Inventor Nobuyoshi Yoshida 1015, Kamedotachu, Nakahara-ku, Kawasaki, Kanagawa Within Fujitsu Limited (56) Reference References JP-A-7-56614 (JP, A) JP-A-5-134729 (JP, A) JP-A-7-57120 (JP, A) JP-A-6-290237 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) G05B 19/18-19/46 B23Q 15/00-15/28 G06F 17/50

Claims (9)

(57) [Claims] 1. CAD data for sheet metal is converted into C data for NC processing.
In a CAD / CAM data conversion system for converting into AM data, a three-dimensional processing unit for converting CAD data of a two-dimensional projection image into CAD data of a three-dimensional stereoscopic image, and CAD data of the three-dimensional stereoscopic image on a substrate plane. An expansion processing unit for converting into CAD data of a two-dimensional expansion image for expansion, and an NC processing data by converting the processing portion into the data of the type and coordinate of the corresponding processing tool based on the CAD data of the two-dimensional expansion image. The NC data creation processing unit that creates the data, and the part of the data of the type and coordinates of the processing tool based on the NC processing data is converted into the corresponding data of holes and coordinates, and CA
A CAD / CAM data conversion system comprising a CAM data creation processing unit for creating M data. 2. The CAD / CAM data conversion system according to claim 1, wherein the hole data in the CAM data comprises a number for specifying a hole type and size information data. 3. The prepared hole size generation processing unit for automatically generating prepared hole size data at the time of manufacturing based on round hole type hole type data included in CAD data.
CAD / CAM data conversion system. 4. The CAD / CAM data conversion system according to claim 3, wherein condition information for generating the prepared hole size is stored in an external file. 5. CAD / CA for each figure number of CAD data
A progress management processing unit that manages the progress of the M data conversion process is provided, and the progress management processing unit records and retains the processing results of each processing to be processed in a predetermined order, the date when the processing is completed, and the time if necessary. The CAD / CAM data conversion system according to claim 1, wherein a lock is applied so as not to proceed to the next process when the previous process is not normally completed. 6. Information regarding progress is classified by drawing number, by processing result,
The CAD / CA according to claim 5, further comprising an inquiry processing unit capable of making an inquiry for each date or for each specific group.
M data conversion system. 7. The CAD / according to claim 1, which is located in the manufacturing department.
The CAM data conversion system and the CAD system in the remote design department are connected by a communication network, and CAD data for which the design is completed can be CAD online.
/ CAM data conversion system, and the CAD / CAM data conversion system that receives the data converts it to corresponding CAM data. 8. The CAD / CAM data conversion system according to claim 1, and the NC connected to the CAD / CAM data conversion system.
Display means for displaying the trace of the machining data and N by manually inputting the machining data consisting of the hole and coordinate data of the machining part based on the CAD data print drawing.
A graphic entry system for creating CAM data for C machining is provided, and the machining data input from the graphic entry system is CAD.
/ CAM data conversion system and the CA
By converting the processing of the CAM data creation processing unit in the D / CAM data conversion system upside down, the input machining data is converted into NC machining data composed of machining tool type and coordinate data, and the trajectory display of the NC machining data is displayed. An NC processing system characterized by performing. 9. With respect to all NC orders of input, a turn is obtained for each, and the turn is compared with a reference value to obtain (turn) <
The NC order of (reference value) is set as a group for express processing, the others are set as a group for normal processing, and CAD / C
Based on the CAM data provided by the AM data conversion system or the graphic entry system, a machining method that emphasizes the completion period, a machining method that emphasizes the degree of completion, a machining method that minimizes the die exchange by reducing the number of die exchanges, The NC support system is equipped with an NC support system that creates the corresponding NC data by grouping each of the one of the 1st drawing number optimization processing methods that considers die replacement and placement processing so that the processing efficiency is higher. 9. The NC machining system according to claim 8, wherein the CAM data from the CAD / CAM data conversion system or the graphic entry system is assigned with information on the optimum machining tool type corresponding to each machining method.