JP2789982B2 - CAD / CAM equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an NC for an electric discharge machine.
The present invention relates to a CAD / CAM device for creating a program.

[0002]

2. Description of the Related Art FIG. 19 is a block diagram showing an example of a conventional CAD / CAM device. In FIG.
Is a mouse, and 3 is a tablet, which is an input device for inputting position information and character information, respectively. Reference numeral 4 denotes a drawing command for drawing and editing points, lines, circles and the like using the input device, 5 a CAD / CAM database for storing graphic data and the like created by the drawing command 4, 6 a CA
A CRT for displaying graphic data and the like on the D / CAM database 5, a plotter output command 7 for printing the data on the CAD / CAM database 5 on paper of an appropriate size, and a reference numeral 8 on the CAD / CAM database 5. Drawing input / output means for saving / reading data to / from external storage device 10, plotter device 11, paper tape input / output device 9,
Reference numeral 2 denotes a printer; 13, processing definition / editing means for converting input position information and character information such as the name of an electrical condition sequence used in the engraving electric discharge machining at the position into an internal storage format; NC program generating means for generating an NC program based on the processed machining information.

Next, the operation will be described with reference to FIGS. 19 to 21 and FIG. First, the operator draws a drawing of a mold to be subjected to the sinking electric discharge machining. Drawing is CR
The user operates the input device of the keyboard 1, the mouse 2, and the tablet 3 while activating the drawing command 4 while watching T6. The drawing of the completed mold is plotter output command 7.
To print on the plotter device 11 and store it in the external storage device 10 with the drawing input / output command 8. FIG. 20 is an example of a mold drawn using the drawing command 4.

[0004] Next, the operator first enters the plotter device 11.
Or a drawing as shown in FIG.
While looking at the diagram as shown in FIG. 20 drawn on RT6,
Determine the coordinate values to be subjected to die sinking electrical discharge machining. In general, one mold usually has a plurality of sculpture electrical discharge machining positions. A processing definition list as shown in FIG. 17 in which the processing order, electrode name, processing condition, processing depth, swing pattern, electrode angle, electric condition name (M pack name), etc. at each processing position are entered. Is created by the operator using paper.

[0005] When deciding what kind of electrode is to be used as an electrode to be included in the machining definition list, it is necessary to judge whether to use the standard electrode or the mold electrode in machining the mold. However, in that case, refer to a guide manual book which describes a list of standard electrodes. Also, in deciding which electric conditions to use as the electric conditions to be included in this machining definition list, the operator considers the desired conditions of the electrodes to be used and the roughness of the finished surface, and attaches them to the die sink electric discharge machine. This is performed by searching for materials such as a characteristic table prepared separately from the CAD / CAM device by itself.

[0006] The electrical conditions in a die sinking electric discharge machine include several conditions, for example, EPSEL, AUX, POL, I
An identification number (electric condition column name or E pack name) is assigned to a combination of parameters such as P (electric condition sequence or E pack), and the identification number is given to NC information or a combination of electric condition sequences (M pack ) Is assigned an identification number (M-pack name), and the identification number is given to the NC information to operate the electric discharge machine.

On the electric discharge machine side, EPSEL, AUX,
Identification number (electrical condition column name or E-package) for a combination of parameters such as POL and IP (electrical condition column or E-pack)
Pack name), EPSEL, AUX, POL, I
It is possible to register the contents of the electric conditions such as P, and to register the electric condition column name for the identification number (M pack name) for the combination of electric condition columns (M pack). It is. The operator performs the search while assuming that the contents registered in the electric discharge machine match the contents of the material. In the case of this conventional example,
An example is shown in which an identification number (M-pack name) is assigned to a combination (M-pack) of the electrical condition sequence, and the identification number is given to the NC information to operate the electric discharge machine.

Next, the operator inputs, from the input device, specifications necessary for machining, such as machining position and machining depth, and electric conditions necessary for electric discharge machining, based on the created drawing, machining definition list, and the like. I do. The input data is converted into an internal storage format by the operation of the processing definition / editing means 13 and stored in the CAD / CAM database 5. After that, when NC program generation is started,
An NC program is generated by the operation of the NC program generating means 14 and stored in the CAD / CAM database 5.

[0009] Further, when the operator is not a standard electrode such as a prism or a cylinder, for example, a non-standard electrode (hereinafter referred to as a mold electrode) as shown in FIG. Draw an electrode diagram using command 4. The procedure is the same as for mold drawing. The mold electrode is an electrode dedicated to a specific mold and has no stock unlike a standard electrode. Therefore, it is manufactured separately by a machining center or the like. For example, in the case of the electric discharge machining of the die shown in FIG. 20, the four corners are subjected to electric discharge machining using the die electrodes shown in FIG. 21, and the straight line connecting the four corners is subjected to electric discharge machining using the prismatic standard electrode. It is common.

The operator mounts the standard electrode and the mold electrode at predetermined positions of the die sinking electric discharge machine with reference to the created machining definition list, mold electrode diagram, and the like. At that time, the movement information such as the processing position and the processing depth is stored in CAD / CAM
Input in the form of NC program generated by the device. Set the solid material of the mold to be machined in the Die-sinker EDM,
A desired mold is obtained by operating the C apparatus according to the NC program.

[0011]

SUMMARY OF THE INVENTION Conventional CAD / CAM
Since the device is configured as described above, the work definition work of the mold is performed while referring to the drawing on paper, the work definition list, etc., and there is a possibility that information transmission error may occur there. The sex was great.

[0012] In order to process a mold, it is necessary to determine whether to use a standard electrode or a mold electrode. In this case, a guide manual describing a list of standard electrodes must be referred to. Work was complicated.

Further, when determining the electrical conditions, it is necessary to refer to external materials relating to the electrical conditions, and the work is complicated as in the setting of the electrodes to be used.

Further, when arranging the electrodes on the mold, it is necessary to actually perform the processing to determine whether or not the arrangement position is correct.

[0015] Further, in preparing the processing definition list, it was inefficient because it was manually performed.

Also, since different external materials must be prepared according to the type of the die sinking electric discharge machine, the management of electrical condition information becomes more complicated as more types of processing machines are used. There was a problem.

Further, since the contents of the electric condition sequence can be set for each processing machine, the contents of the electric condition sequence described in the external material and the contents of the electric condition sequence actually registered in the processing machine are different. If they are different, there is a problem that the processing under the desired electrical conditions may not be performed only with the information of the electrical condition column name or the M pack name.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the processing for defining the working of a mold is performed with respect to a workpiece displayed on a display device, at the position, angle, and working depth of an electrode. It is possible to prevent processing mistakes by checking while confirming etc., and when placing electrodes on the workpiece, the actual electrode shape is displayed at the same time as the placement or at the time of designation, so that the processing It is an object of the present invention to obtain a CAD / CAM apparatus capable of confirming a positional relationship between a processed region of an object and an electrode shape, remaining a processed portion, and reducing a possibility of over-processing.

Further, according to the present invention, a list of standard electrodes is described by preliminarily registering electrodes required for processing for both a standard electrode and a mold electrode, and simultaneously displaying a list of these electrodes at the time of processing definition. It is an object of the present invention to obtain a CAD / CAM device that does not require reference to a guide manual book.

Further, according to the present invention, when the process is defined,
By generating and displaying a machining definition list from specifications such as arrangement position, angle, machining depth, etc., CAD /
The purpose is to obtain a CAM device. The invention also provides
The purpose is to obtain a CAD / CAM device.

According to the present invention, an electric condition corresponding to a machining condition is described by automatically determining a corresponding electric condition column name by inputting a condition such as roughness of a desired finished surface by an operator. It is an object of the present invention to obtain a CAD / CAM device that solves the problem of having to refer to external materials.

Further, the present invention eliminates the need for the operator to be particularly aware of the difference between the types of electric discharge machines, thereby reducing the complexity of managing the electrical conditions of a plurality of types of electric discharge machines. The purpose is to obtain a CAM device.

Still another object of the present invention is to provide a CAD / CAM apparatus capable of generating an NC program in which there is no possibility that the registered contents of an electric condition sequence in an external material and an electric discharge machine are different.

[0024]

A CAD according to the present invention is provided.
/ CAM device uses CAD drawing command in advance,
Electrode part registration means for registering an electrode for die sinking electric discharge machining drawn on a display device, and processing for arranging the electrode registered using the electrode part registration means on a predetermined portion of the workpiece on the display device. Definition means, and an NC program creating means for creating an NC program based on the electrode arrangement position of the workpiece on the drawing. An attribute for display can be added to a part or the whole of the figure, and when the electrode with the display attribute is arranged, the processing definition means adds the display attribute of the electrode figure to the arrangement position. Only the drawn graphic is displayed on the display device.

In the CAD / CAM apparatus according to the present invention, the electrode part registration means of the present invention may be arranged such that when registering a previously drawn electrode, a standard electrode which does not depend on a specific workpiece or a designated workpiece is used. It is assumed that the mold electrode used only for the workpiece is designated and registered.When the processing definition means arranges the pre-registered electrode on a predetermined portion of the workpiece on the display device, the electrode is registered beforehand. When a list is displayed for selection, a list of standard electrodes and mold electrodes is displayed, and the selected electrode is reflected in the NC program generation.

Further, the CAD / CAM apparatus according to the present invention comprises: an electric condition sequence registering means for registering a combination of various electric conditions of the die sinking electric discharge as an electric condition sequence;
Search condition setting means for registering a correspondence between a condition such as a desired finished surface and the electric condition sequence, electric condition sequence search means for searching an electric condition sequence corresponding to the input processing information, and input processing information And NC based on the searched electrical condition sequence
And an NC program generating means for generating a program.

Further, a CAD / CAM apparatus according to the present invention has a plurality of types of the electric condition sequence registering means and the search condition setting means according to the invention according to the use of the user, the die sinking electric discharge machine to be used, and the like. And an electric condition sequence determining method selecting device for setting which electric condition sequence registering means and search condition setting means are to be used in accordance with the user's application, the die sinking electric discharge machine to be used, and the like. It is a thing.

A CAD / CAM apparatus according to the present invention is characterized in that the NC program generating means of the present invention generates an NC program in a form in which the contents of an electrical condition sequence are continuously incorporated in addition to machining position information. It is what it was.

Further, the CAD / CAM according to the present invention
The apparatus is the CAD / CAM apparatus according to the invention, further comprising a processing definition list creating means for generating a processing definition list listing input processing definition information and processing order.

[0030]

The electrode part registration means according to the present invention enables registration of a reference position and attributes (material, number, wear degree, etc.) of the electrode, as well as a shape representing the shape of the electrode, and a work piece. In the electric discharge machining described above, it is possible to add a display attribute to an electrode shape that is important for machining. The processing definition means enables the electrodes registered by the electrode part registration means to be arranged on a pattern previously drawn by using a CAD drawing command, and displays the corresponding shape at the time of processing definition. To make things possible.

Further, the electrode part registration means in the present invention makes it possible to distinguish and register a standard electrode and a mold electrode. Further, the processing definition means includes a step of arranging the pre-registered electrodes on a predetermined portion of the workpiece on a display device, displaying a list of the pre-registered electrodes for selection, a list of standard electrodes and mold electrodes. A table is displayed, and the selected electrodes are reflected in the NC program generation.

Further, the electric condition sequence registering means in the present invention enables the management of electric conditions inside the CAD / CAM device by inputting information of the contents of the electric condition sequence to the CAD / CAM device in advance. . Further, the search condition setting means makes it possible to register an electric condition column name corresponding to information such as an electrode to be used and a finished surface roughness in advance. The electric condition sequence search means automatically searches for an electric condition sequence name corresponding to the condition input by the operator based on the information registered above.

In the present invention, a plurality of types of search condition setting means and a plurality of electrical condition sequence search means are provided for each processing machine.
It is possible to register different electric conditions for each method of use, and the electric condition sequence determining method selecting means sets which of the plurality of means is used this time.

Further, the NC program creating means according to the present invention generates an NC program of a format in which the contents of the electrical condition sequence are continuously incorporated in addition to the processing position information, so that the CAD / CAM side unitarily operates. It enables the management of a series of electrical conditions.

Further, the processing definition list creating means according to the present invention generates a processing definition list in which the input processing definition information and the processing order are listed.

[0036]

[Embodiment 1] An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is a diagram showing a configuration of a CAD / CAM device according to the present invention. In the drawing, reference numerals 1 to 12 are substantially the same as those of a conventional CAD / CAM device. 15 is CAD /
Electrode part registration means 16 for registering the electrode figure stored in the CAM database 5 as an electrode part, and 16 reads out the electrode parts registered by the electrode part registration means 15 from the CAD / CAM database 5 and places them on a previously drawn mold. CRT
6 or already on CAD / CAM database 5
This is a processing definition / editing unit that edits the processing definition contents stored in.

17 is a CAD / CAM database 5
Is sequentially read, and the information is converted into a predetermined format to generate a processing definition list as shown in FIG.
NC program generation means for generating an NC program from information on electrode components, electrical conditions, and the like stored in a plurality of CAM databases 5, and 19 is a CAD / CAM database 5.
This is a processing definition deleting unit that deletes the processing definition contents stored in.

Reference numeral 20 denotes electric condition sequence registering means for registering a combination of various electric conditions as an electric condition sequence, a plurality of which are provided so as to correspond to the type of electric discharge machine used. Reference numeral 21 denotes a search condition setting unit for registering the correspondence between the electrode used, the condition of the desired finished surface, and the like and the electrical condition sequence. A plurality is provided. 22 is an electric condition sequence search means for selecting an electric condition sequence corresponding to the processing information, and 23 is the plurality of electric condition sequence registration means 2
0, an electric condition sequence determining method selecting means for setting which of the search condition setting means 21 is to be used.

The plurality of electric condition sequence registering means 20 and the plurality of search condition setting means 21 are provided for each processing machine.
Since it is necessary to register each electric condition different for each method of use, if it is not necessary to register each electric condition different for each processing machine and each method of use, the electric condition sequence registration means 20 and the search condition If at least one setting means 21 is provided, the intended purpose can be achieved. Needless to say, when the electric condition sequence registering means 20 and the search condition setting means 21 are respectively one, the electric condition sequence determining method selecting means 23 becomes unnecessary.

Next, the operation of the CAD / CAM device according to this embodiment will be described with reference to FIGS. 1 to 18 and FIG.

This CAD / CAM apparatus has two types of data input formats: a method for defining a figure by designating a specific position on the screen with the mouse 2 or the like, and a method for interactive table input with the keyboard 1 or the like. Two types are prepared, each of which is used properly according to the purpose. The processing position and the like are defined using a graphic definition method, and input and registration of processing conditions are performed by interactive table input.

First, an operation to be performed when the CAD / CAM apparatus is used for the first time or when the registration of electrical conditions is corrected will be described with reference to a flowchart shown in FIG. The operator inputs the name of the electrical condition column and the contents of the electrical condition sequence from the keyboard 1 by the operation of the electrical condition sequence registering means 20 (step 101). FIG. 3 is an example of a screen in which the contents of the electrical condition sequence are registered. Registration is performed by filling the table with numerical values and characters input from the keyboard. In this case, 33 is an electrical condition column name,
Here, it is called the E pack name.

The data group of 34 is an electrical condition sequence (E pack)
It is the contents of. In this table, EPSEL, AUX, P
OL, IP, and the like are parameters of electrical conditions to be given to the electrodes when performing sinking electric discharge machining. One row in the table shows the setting of one set of electrical condition columns. When the number of registrations is large, the table can be scrolled in the vertical direction to register the continuation. The interactive table input method is the same for the following tables.

Next, several combinations of machining condition sequences are set by interactive table input by the operation of the electric condition setting means 21 in the same manner as described above (step 102). FIG.
Is an example in which the combination of the electrical condition sequences is registered. 3 in the figure
Reference numeral 6 denotes an electric condition sequence name, and a condition obtained by combining some of them is given an electric condition sequence combination name 35. Here, this combination name is called an M-pack name. In the figure, for example, 2
The M pack 8001 registered as the second is 9906,
It is registered as a combination of four electric condition strings 9907, 9908, and 9909. This combination indicates that machining is performed while changing machining conditions in four steps for one electrical discharge machining. By using this combination, it is possible to realize a method in which processing is performed under rough electrical conditions at the beginning of processing and under delicate electrical conditions near the end of processing. 3
Reference numeral 7 denotes various parameters output to the NC data according to the change and comments at the time of registration.

Further, by the operation of the retrieval condition setting means 21, the correspondence between the parameters of the electrodes to be used, the conditions of the desired finished surface and the electric condition sequence (or a combination thereof) is registered by an interactive table input method (step 103). FIG. 5 shows an example of this setting screen. In the figure, reference numeral 38 denotes a combination name (M pack name) of the electrical condition column names, and reference numeral 39 denotes various conditions when the combination is used. The part marked as "---" in the condition indicates that the condition is not distinguished. In a later-described electrical condition sequence search, it is checked whether this condition matches a desired condition. Since a plurality of the electric condition sequence registration means 20 and the search condition setting means 21 are prepared, different search conditions may be registered according to the type of the electric discharge machine as needed.

As described above, the electrical conditions and the like are changed by CAD / C
Register in the AM database 5. Finally, the electrodes are registered in the CAD / CAM database 5 using the electrode part registration means 15 (step 104). The details of this electrode component registration are as shown in FIGS. That is, prior to the electrode component registration, the drawing command 4
Draw desired electrodes as shown in Fig. 1 and draw CAD / CAM
It is stored on the database 5. The plotted electrode as shown in FIG. 21 is displayed in advance on the CRT 6 as shown in FIG. 7A, and the reference position of the electrode (position A in FIG. 20) is determined using the mouse 2 or the like. A designation is made as shown in (b) (step 201). Note that the placement reference position is a matching position when the electrodes are placed on the mold.

Next, a table for setting conditions for using the electrodes shown in FIG. 10, ie, a so-called electrode attribute table, is displayed on the CRT 6 as shown in FIG. 8 (a). Input (step 202). FIG. 10 is a detailed diagram showing an example of the electrode attribute table after data input.

Next, the electrodes are displayed on the CRT 6 as shown in FIG. 8B, which is plotted again.
A part to be displayed when the electrodes are arranged on the mold diagram (details will be described later) is designated by the mouse 2 and the tablet 3 (step 203). For example, in FIG. 8B, if the figure of the arrow part is designated by the mouse 2 and the tablet 3, the shape is displayed on the CRT 6 when the electrodes are arranged on the pattern.

Next, a CRT 6 screen as shown in FIG. 9A is displayed, and a comment "What is the mold?" Appears. The operator determines whether or not this electrode is a standard electrode (step 204). Is not a standard electrode, that is, if it is a specific mold electrode, the name of the mold used for this mold electrode is input (step 205). In the case of the standard electrode, the return key is input. Finally, FIG.
The screen becomes a CRT 6 as shown in (b), and a comment requesting the input of the electrode name appears. The electrode is given a name, and the registered electrode is stored in the CAD / CAM database 5 (step 206).

Steps 1 to 5 are repeated as many times as the number of electrodes to be registered. However, if the operator determines that displaying the electrode figure does not contribute to the interference check with the mold, which will be described later, , Steps 201 and 203 can be omitted. In this way, the electrode components are registered in the CAD / CAM database 5. FIG. 11 shows a screen on which a list of registered electrodes is displayed by an electrode list function after several electrodes are registered. The shape information is used for display when electrodes are placed on a mold drawing, which will be described later, for animation in which the shape of the electrodes moves during a machining path simulation when generating NC data, and the like (condition data).
Is used when searching for electrical conditions. These settings are
This is performed only when the CAD / CAM device is used for the first time or when the conditions are corrected. When all these settings are made, preparations for normal NC program generation are completed.

Next, an operation of generating an NC program using the present CAD / CAM device will be described with reference to a flowchart shown in FIG. First, the operator inputs information relating to the entire processing using an input device such as the keyboard 1 by an interactive table input method (step 105). At this time, the processing definition / editing means 16 operates. FIG.
Is entered as workpiece material = iron, surface roughness condition = 0,
It is an example of this input screen. This information is stored in the CAD / CAM database 5.

Next, in the electric condition sequence determining method selecting means 21, any electric condition registering means 20, search condition setting means 21
Is set (step 106). If there is only one electric condition registration unit 20 and only one search condition setting unit 21, this step is not necessary.

Next, using the input device such as the mouse 2 or the like, a figure on the display device is designated to input processing position information (step 107). Further, an electrode name used at the processing position is input (step 108).

Step 107 and step 10
Details of 8 are as shown in FIGS. That is, at this time, the processing definition / editing means 16 operates to determine whether the processing definition is new (step 210). If the processing definition is new, the drawing input / output means 8 is used prior to the processing definition. The mold drawing previously stored in the external storage device 10 is extracted from the external storage device 10 and CAD / C
It is stored in the AM database 5. The drawing of this mold is CR
The information is displayed on T6 as shown in FIG. 14A, and the reference positions of the electrodes are designated by the keyboard 1, the mouse 2, the tablet 3, and the like (step 211). At that time CRT
In FIG. 6, a mark E1 indicating the processing reference position and the identification name of the processing position is displayed as shown in FIG.

Next, from the screen shown in FIG. 14C displayed when step 211 is completed, the arrangement angle of the electrode at that position (the rotation direction around the Z axis with respect to the XY plane)
Is specified (step 212). Next, the processing depth is designated from the screen shown in FIG. 14D displayed when step 212 is completed (step 213). Then step 21
The swing direction is designated from the screen shown in FIG. 15A displayed after the completion of Step 3 (Step 214). Next, the processing feed amount is designated from the screen shown in FIG. 15B displayed when step 214 is completed (step 215).
Note that the input data of steps 211 to 215
It is stored in the D / CAM database 5.

When step 215 is completed, FIG.
An electrode list as shown in (c) (a list combining standard electrodes and mold electrodes dedicated to molds existing in the CAD / CAM database 5 as shown in detail in FIG. 11) is displayed. The electrode desired to be arranged is designated by the mouse 2 from the table (step 216). In FIG. 11, the electrode KA
If TA-ELE1 is selected, the conditions at the time of searching for electrical conditions are as follows: electrode material = copper, reduction allowance = 0.3, swing pattern = angle, number of electrodes = 2.

In the state where no mold electrode is stored in the CAD / CAM database 5, only the standard electrodes are displayed in the list of FIG. The attributes of the selected electrode are also stored in the CAD / CAM database 5. If the last selected electrode has a display attribute, only the figure with the attribute is stored and displayed in the CAD / CAM database 5 (step 217). FIG. 15 shows a state in which a graphic with attributes is displayed on CRT 6.
(D).

When it is desired to edit the defined processing contents, that is, when the processing definition is not new in step 210,
A mark (for example, E1) to be edited is selected by the mouse 2 and the tablet 3 from the CRT 6 screen as shown in FIG. 15D (step 218). Later steps 211 and 2
Reference numeral 17 is the same as in the case of a new process definition. When the processing definition information is to be deleted, a diagram as shown in FIG. 15D is displayed, and a mark (for example, E
If 1) is specified from the input device, the processing definition information of the portion to be deleted can be deleted by the operation of the processing deleting unit 19. As described above, the processing position information, the electrode to be used, and the like are specified.

When the above input is completed, the electric condition sequence search means 20 is activated, and the steps 105 and 1 are started.
A corresponding electrical condition sequence is searched for the condition input in step 08 (step 109). At this time, step 1
03, the combination name (M
Search the corresponding information of (pack name). If the search is successful,
The electrical condition column name is stored in the CAD / CAM database 5 (step 110). In the example of this explanation, the material of the workpiece = iron, the material of the electrode = copper, the condition of the surface roughness = 0, the reduction allowance =
Since the conditions of 0.3, swing pattern = angle, and number of electrodes = 2 were input, the name of the M pack to be used is determined to be 8001 from the correspondence table of FIG. (In addition, the condition that the direction is z from the direction of operation of the electrode and the condition of rough finish = rough is also used for the search because it is the first processing).

If there is no corresponding information and the search fails, an error message is output to urge registration of the corresponding information (step 111). This search failure does not occur if the operator has sufficiently registered the preparation. When this error message is output, the registration can be added in accordance with the algorithm shown in FIG.

This definition is repeated as necessary (step 112). If necessary, processing definition list generating means 17
17, the processing definition list for confirming the state of the overall definition shown in FIG. 17 can be output to the printer 12 or the like on the CRT 6 for viewing (step 113). By looking at this list, it is possible to confirm which electrical condition has been searched. This field is blank if the search failed in the previous step.

When all processing definitions and confirmations are completed, NC
The program generation means 18 generates an NC program based on the information stored in the CAD / CAM database 5 (step 114). At this point, if there is a process in which the search for the electrical condition has failed and the electrical condition column name has not been determined, an error message is output and the process is interrupted. At this time, the contents of the registered electric condition sequence are searched based on the combination of the electric condition sequences (M pack name) and the electric condition sequence name, and the contents are inserted into the NC program while the contents are also inserted. Generate. FIG. 18 is a diagram showing an example of the NC program in this case. The part A in the figure is the contents of the electrical condition sequence. When the electric discharge machine reads the information of this portion, it receives the contents of the electric condition sequence, so that the contents of the electric condition sequence registered on the CAD / CAM side and the electric discharge machine side do not differ. Therefore, unified management of electrical conditions on the CAD / CAM side becomes possible.

In the example of this description, since the M pack 8001 is used, the corresponding E pack is 9906 from FIG.
9907, 9908, and 9909, and the contents of each E-pack can be understood from FIG. FIG. 18A shows the contents output in accordance with the type of the die sinking electric discharge machine. The three rows are collective data, and each row corresponds to the data in one horizontal row of the registration table in FIG. After the data of the contents of the electrical condition sequence, processing data corresponding to the processing position of the defined location is output. That is, B is an NC program corresponding to the machining at the machining position E1.

During the generation of the NC program, the workpiece and the movement of the electrode with respect to the workpiece are simulated and displayed on the CRT 6 (step 115). At this time, if necessary, the shape of the electrode registered by the electrode component registration means 15 can be displayed so as to overlap the workpiece. The NC program is generated in this way, and the output destination is the CRT 6, the external storage device 10, the plotter 1
1, any of the printers 15 may be used.

[0065]

As described above, according to the present invention, the processing definition operation for the workpiece is performed, and the arrangement position, the angle, the processing depth, etc. of the electrodes on the workpiece displayed on the display device are confirmed. By doing so, a processing definition error can be prevented. Also, when arranging the electrodes on the workpiece, among the electrode figures, the figures related to the consistency with the workpiece are displayed on the workpiece. By checking in advance, an effect of preventing a processing error can be obtained.

According to the present invention, the electrodes necessary for processing are registered in advance for both the standard electrode and the mold electrode, and at the time of processing definition, these electrodes are displayed in a list at the same time.
Since there is no need to refer to a guide manual that describes a list of standard electrodes, the operability at the time of electrode selection is improved.

According to the present invention, the operator inputs desired conditions such as the roughness of the finished surface,
Since the corresponding electric condition column name is automatically determined, it is possible to solve the problem of having to refer to an external document describing the electric condition corresponding to the processing condition.

Further, according to the present invention, when setting the electric conditions, the operator does not need to be particularly aware of the difference between the types of electric discharge machines, and the management of the electric conditions of a plurality of types of electric discharge machines can be complicated. Can be resolved.

Further, according to the present invention, it is possible to obtain a CAD / CAM apparatus capable of generating an NC program in which there is no possibility that the registered contents of the electric condition sequence in the external material and the electric discharge machine are different.

Further, according to the present invention, since the processing definition list is automatically generated, the effect that the working efficiency can be reduced can be obtained.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing a configuration of a CAD / CAM device according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating an algorithm for registering electrical conditions and electrode components according to an embodiment of the present invention.

FIG. 3 is an explanatory diagram showing a method for registering an electrical condition sequence according to an embodiment of the present invention.

FIG. 4 is an explanatory diagram showing a method of registering a combination of electric condition sequences according to an embodiment of the present invention.

FIG. 5 is an explanatory diagram showing a method of registering search conditions according to an embodiment of the present invention.

FIG. 6 is a flowchart showing the operation of an electrode component registration unit according to one embodiment of the present invention.

FIG. 7 is a diagram showing a CRT screen for explaining the operation of the electrode component registration means according to one embodiment of the present invention.

FIG. 8 is a diagram showing a CRT screen for explaining the operation of the electrode component registration means according to one embodiment of the present invention.

FIG. 9 is a diagram showing a CRT screen for explaining the operation of the electrode component registration means according to one embodiment of the present invention.

FIG. 10 is a diagram showing an electrode attribute table in an electrode component registration unit according to one embodiment of the present invention.

FIG. 11 is a diagram showing an electrode list in a processing definition / editing unit according to one embodiment of the present invention.

FIG. 12 is a diagram showing an example of NC according to a processing definition according to an embodiment of the present invention;
It is a flowchart which shows the algorithm until information generation.

FIG. 13 is a flowchart showing the operation of a processing definition / editing unit according to one embodiment of the present invention.

FIG. 14 is a diagram showing a CRT screen for explaining the operation of the processing definition / editing unit according to one embodiment of the present invention.

FIG. 15 is a diagram showing a CRT screen for explaining the operation of the processing definition / editing unit according to one embodiment of the present invention.

FIG. 16 is an explanatory diagram showing a method of inputting conditions of the entire processing according to an embodiment of the present invention.

FIG. 17 is a diagram showing a processing definition list according to an embodiment of the present invention.

FIG. 18 is a diagram showing an NC program according to one embodiment of the present invention.

FIG. 19 is a configuration diagram showing a configuration of a conventional CAD / CAM device.

FIG. 20 is a diagram showing an example of a mold diagram.

FIG. 21 is a diagram illustrating an example of a mold electrode.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Keyboard 2 Mouse 3 Tablet 4 Drawing command 5 CAD / CAM database 6 CRT 15 Electrode part registration means 16 Processing definition / editing means 17 Processing definition list generating means 18 NC program generating means 19 Processing deleting means 20 Electric condition column registering means 21 Search condition setting means 22 Electric condition string search means 23 Electric condition string determination method selecting means

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-91809 (JP, A) JP-A-62-140745 (JP, A) JP-A-61-32110 (JP, A) JP-A 62-140 4551 (JP, A) JP-A-3-161808 (JP, A) JP-A-59-73228 (JP, A) JP-A-3-107712 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) G05B 19/4097 B23H 7/20

Claims (6)

(57) [Claims] In a CAD / CAM apparatus for creating an NC program for a die sinking electric discharge machine, an electrode component for registering a die sinking electric discharge electrode drawn on a display device in advance by using a CAD drawing command. Registering means, processing definition means for arranging the electrodes registered using the electrode component registration means on a display device at a predetermined portion of the workpiece, and based on an electrode arrangement position of the workpiece on the drawing. and a NC program generating means for generating an NC program Te, the electrode parts
The registration means registers an electrode diagram when registering a previously drawn electrode.
Display attributes can be added to part or all of the shape
And the processing definition means includes a display attribute
When placing an electrode with
Only those figures with display attributes are displayed on the display device.
A CAD / CAM device characterized by the following . 2. An electrode component registration means, when registering an electrode drawn in advance, designates a standard electrode which does not depend on a specific workpiece or a mold electrode used only for a designated workpiece. When arranging the pre-registered electrodes on a predetermined portion of the workpiece on a display device, and when displaying the pre-registered electrodes in a list for selection, 2. The CA according to claim 1, wherein a list of electrodes and mold electrodes is displayed, and the selected electrodes are reflected in NC program generation.
D / CAM device. 3. An NC program for a die sinking electric discharge machine is created.
In the CAD / CAM device to be formed,
Register a combination of species electrical conditions as an electrical condition sequence.
The air condition column registration means and the conditions such as the electrode used, the desired finished surface, etc.
Search condition setting procedure for registering the correspondence between the
Search for column and electrical condition sequence corresponding to input machining information
Electric condition sequence search means, and input processing information and search
The NC program based on the set electrical condition sequence
CAD / CAM comprising NC program creation means
apparatus 4. An electric condition sequence registering means and a search condition setting means.
Set the step according to the user's application,
Have multiple types, and the user's application and use
Each electric condition sequence according to the die-sinking EDM etc.
Set whether to use registration means and search condition setting means.
The electric condition sequence determining method selecting means.
The CAD / CAM apparatus according to claim 3, wherein 5. An NC program creating means, comprising:
In addition to the information, the contents of the electrical condition column were also incorporated continuously.
The feature is to generate the NC program of the form
The CAD / CAM device according to any one of claims 1 to 4, wherein 6. The processing definition information and the processing order that have been input
Process definition list creation that generates a list of process definition lists
6. A method according to claim 1, further comprising:
12. The CAD / CAM device according to item 1.