JP3077415B2 - NC processing program creation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention creates a multi-cavity machining program for machining a plurality of workpieces from a workpiece using a plurality of pre-registered single-piece machining programs. The present invention relates to an NC processing program creating apparatus.

[0002]

2. Description of the Related Art Conventionally, for example, a machining program creating apparatus for a wire electric discharge machine has an operator operating a mouse or the like, drawing on a screen, drawing the shape of a processed product, and drawing the outline of the drawn figure with a stroke. When written, a machining path from a machining start point to a machining end point is coded to create a single-piece machining program. Then, when creating a multi-cavity machining program necessary for machining a plurality of workpieces from one workpiece, the operator has to perform the above operation for each workpiece.

[0003] Since such a repetitive operation is complicated, recently, the following automatic setting technology of a machining path has been considered. According to the automatic setting technology of the machining path,
A single item processing program for processing a single processed item is previously stored in the memory for each processed item. Then, when the operator operates a mouse or the like to select a desired single item processing program from the display screen and designates an arrangement position of the selected processed item on the workpiece, the single item processing program in the memory is displayed. Based on this, the figure of the processed product is arranged and displayed at a predetermined position on the editor screen.
After that, arithmetic processing for processing these display figures in the shortest path is performed, and a multi-cavity machining program for processing the workpiece in the shortest path is created. Such a technique is disclosed in, for example, JP-A-62-69301.
No.

[0004]

However, the above-described automatic setting of the machining path has a problem that the software used to create the multi-cavity machining program is complicated and enormous in size.

Further, when machining is performed using the multi-cavity machining program created by automatically obtaining the shortest machining path as described above, the following problem occurs. In order to prevent the processed product from being completely separated from the workpiece and falling naturally, the program for processing a single product for each processed product is used to partially connect the processed product and the workpiece. There are cases where microjoint data is already included and cases where it is not included. Therefore, when machining is performed by the multi-cavity machining program created simply by combining the single item machining programs, the machined product machined by the machining program having no microjoint data naturally falls from the workpiece. I will.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and has been made in consideration of the above-described problems. If there is a program for single-piece machining that does not have micro-joint data when automatically creating a micro-joint data, an NC machining program that can notify the operator and allows the operator to newly set micro-joint data if necessary It is an object to provide a creation device.

Another object of the present invention is to provide a multi-joint machining program for machining a plurality of workpieces from a workpiece based on a plurality of selected single-piece machining programs. An object of the present invention is to provide an NC machining program creation device capable of automatically creating microjoint data when a single-piece machining program having no data exists.

[0008]

In order to achieve the above object, an NC machining program creating apparatus according to claim 1 is provided with an NC processing program creating apparatus shown in FIG.
As shown by a solid line, a multi-cavity machining program for machining a plurality of workpieces from a workpiece is created by using a plurality of pre-registered single workpiece machining programs.
C machining program creating device, storing means for storing each single-piece machining program created for a plurality of types of workpieces, and selection for selecting a single-piece machining program of a desired workpiece Means, an arrangement position setting means for setting an arrangement position of the workpiece on the workpiece,
Whether or not the single-piece machining program selected by the selection means has microjoint data; and a judging means for judging, and when the judgment means judges that there is microjoint data, the single-piece machining program and the following A linking means for linking the single-piece machining program based on the arrangement position set by the arrangement position setting means, and when the determination means determines that there is no micro-joint data, the single-piece machining program includes the micro-joint data. There is provided a notifying means for notifying the worker that the micro joint data does not exist, and enabling new setting of micro joint data as necessary.

Further, the NC processing program creating device according to claim 2 uses the connecting means of claim 1 as the first connecting means as shown by the broken line in FIG.
When the judging means judges that there is no micro joint data, the micro joint data is automatically created, the micro joint data is added to the single piece machining program, and then the next single article machining program is arranged and set. And second connecting means for connecting based on the arrangement position set by the above.

[0010]

According to the first aspect of the present invention, the storage means stores a single item processing program registered in advance for each of a plurality of types of processed products, and the selection means stores the desired program stored in the storage means. The single-piece processing program for the processed product is selected, and the arrangement position setting means sets the arrangement position of the processed product on the workpiece. Then, the determining means determines whether or not the single-piece machining program has microjoint data. When it is determined that the single-piece machining program has microjoint data, the connecting means sets the single-piece machining program and the next single-piece machining program. Are linked based on the arrangement position set by the arrangement position setting means, and when it is determined that there is no micro joint data, the notifying means notifies the operator that there is no micro joint data. Therefore, the operator can newly set the micro joint data as needed.

Further, in the invention according to claim 2, the determining means determines whether or not the single item processing program has microjoint data. When it is determined that there is microjoint data, the first connecting means determines whether or not there is microjoint data. The single-piece machining program and the next single-piece machining program are connected based on the arrangement position set by the arrangement-position setting means, and when it is determined that there is no microjoint data, the second connection means automatically After the microjoint data is created and the microjoint data is added to the single item processing program, the next single item processing program is connected based on the arrangement position set by the arrangement position setting means.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment in which the present invention is embodied in a machining program creating apparatus for a wire electric discharge machine will be described with reference to the drawings.

FIG. 2 is a perspective view showing the overall configuration of the machining program creating apparatus of the present embodiment. In FIG. 2, a program creation device is an arithmetic device 1 for creating a program.
And a graphic display device 3 for displaying a graphic corresponding to the processed product
And a keyboard 5 for inputting a code number for identifying a figure, the number of processed products, etc., and for specifying a figure displayed on the figure display device 3, inputting a processing start position, setting a micro joint, and the like. It comprises a mouse 7 and an NC tape puncher 9 for punching an NC program created by the arithmetic unit 1 on an NC tape. Note that the keyboard 5 and the mouse 7 correspond to the selection unit and the arrangement position setting unit of the present invention.

The main part of the arithmetic unit 1 is, as shown in FIG.
CPU 11, ROM 13, RAM 15, input / output circuit 17
And an input / output circuit 17
Is connected to the graphic display device 3, the keyboard 5, the mouse 7, and the NC tape puncher 9, and the hard disk device 21 and the floppy disk device 23 built in the arithmetic unit 1 are connected. The hard disk device 21 and the floppy disk device 23 store the machining NC program created by the arithmetic unit 1.

It is also possible to connect the program creating device and a wire electric discharge machine as an NC device to transmit a machining NC program to the NC device. In this case, the communication circuit 25 is used, and the program creation device and N
The device C is connected via the communication circuit 25.

The program creating device thus configured has a single item registration mode and a multiple item registration mode. The single item registration mode is a mode for creating a single item machining program for machining a single workpiece, and the multiple item registration mode is a mode for creating a multi-cavity machining program for machining a plurality of artifacts.

In the single item registration mode, the operator inputs, from the keyboard 5 or the mouse 7, the figure of the processed item and the processing path for each processed item to be processed. Then
Based on the data, a single item processing program is stored in the hard disk device 21 or the like.

Next, in the multiple item registration mode, the operator designates and inputs the type, arrangement and number of processed products from the keyboard 5 or the mouse 7. Then, the single item processing program corresponding to the specified processed item is stored in the hard disk device 2.
1 and is developed into graphic data and machining path data and stored in the RAM 15, and the graphic display device 3
, The designated number of the shapes of the processed products are arranged and displayed. Therefore, the hard disk device 21 corresponds to a storage unit.

Then, the operator operates the mouse 7 or the like to
When the processing order of the plurality of processed products displayed on the graphic display device 3 and the processing start position of each processed product are designated, the arithmetic unit 1 determines each of the arranged processed products based on the designation. For the specified processing start position,
A program for executing machining in accordance with the developed machining path data and ending the machining at the machining end point is automatically created for performing the designated machining order. At this time,
When there is no micro joint in the processing path data of each processed product, the arithmetic unit 1 interrupts the program creation operation and causes the graphic display device 3 to display a message indicating that there is no micro joint data. Therefore, the operator can newly set the micro joint data as needed.

Hereinafter, the operation of the present embodiment will be described in detail with reference to FIGS.

First, the single item registration process shown in FIG. 4 will be described. When the power is turned on, a menu screen is displayed on the graphic display device 3. The operator operates the cursor keys of the keyboard 5 or the mouse 7 to select the single item registration mode. In step S1, the operator operates the keyboard 5 and the mouse 7 to create graphic data of one processed product. The CPU 11 stores the graphic data in the RAM 15 and draws a graphic on the display screen of the graphic display device 3 to display a graphic of one processed product.

Next, in step 2, as shown in FIG. 6, the operator places the mouse 7 on the processing start point S on the graphic drawn on the display screen of the graphic display device 3, and moves the mouse 7 from that position to an arrow. Therefore, the drawing element is designated with the mouse 7 and one stroke of the machining path is drawn. The CPU 11 creates data representing the processing path of the processed product corresponding to the figure, stores the data in the RAM 15, and highlights the one-stroke on the display screen of the figure display device 3. In this state, by designating an arbitrary position and a length on the processing path by using the mouse 7, a micro joint that does not perform the processing can be set between the two points. Generally, micro joint data is set at the end of a machining path.

Next, in step S3, the CPU 11
Using the graphic data representing the graphic of the processed product and the processing path data representing the processing path, a single product processing program for processing the processed product is created. The created single item processing program is given a program name by an operator and stored in the hard disk device 21 or the like.

Next, in step S4, it is determined whether another mode has been selected to exit the single item registration mode. If another single-part machining program is created and registered (step S4: NO), step S4 is performed again.
Returning to step 1, the above operation is repeated. On the other hand, when another mode is selected (step S4: YES), the registration process ends.

Next, referring to FIG. 5, a description will be given of the multiple item registration process.

First, the operator operates the cursor keys of the keyboard 5 or the mouse 7 to select the multiple item registration mode. Then, the CPU 11 proceeds to step S11
, The program names of all the single item processing programs registered in the single item registration process are displayed on the graphic display device 3. At this time, a program name not displayed on the screen can be displayed by a scroll operation. Next, the operator operates the mouse 7 or the like to select a desired program name. Then, the CPU 11 reads the corresponding single item processing program from the hard disk 21 or the like, expands the program into graphic data and processing path data, and
In addition to the storage in the AM 15, the figure and the machining path are displayed on the figure display device 3.

Next, in step S12, while looking at the screen of the graphic display device 3, the operator performs an operation of moving and arranging the graphic of one processed product displayed on the screen to a desired position. In addition to this movement, it is possible to rotate and flip the figure. By such an operation, the CPU 11 arranges and displays the figure of the processed product at a desired position. Furthermore,
When continuously arranging three or more same figures on the screen of the figure display device 3, the operator first specifies the arrangement position of the first two figures by manual operation. Next, when the number of figures is inputted, the CPU 11 duplicates the figures by the inputted number at the first two moving intervals and moving directions and continuously arranges and displays the figures. In addition, since movement and rotation can be freely performed after the arrangement, the processed product can be arranged at a desired position.

Next, when another processed product is read and arranged, a menu key (not shown) is operated (step S1).
3: YES), the process returns to step S11, and the program name of the program for processing the single item is displayed on the graphic display device 3, and the input processing of the arrangement and the number of another processed item is repeated. On the other hand, when no other processed product is to be arranged (step S13: NO), the process proceeds to step S14. In FIG.
An example in which three types of figures A, B, and C selected by the operator are displayed is shown. At this time, it is assumed that the graphic A does not have microjoint data, and the graphics B and C have microjoint data. In step S14, the operator specifies a processing start position for each of the plurality of processed products using the mouse 7 or the like according to the processing order. As shown in FIG. 8, the CPU 11 causes the graphic display device 3 to display a circle indicating a processing start position and a number indicating a processing order.

Next, the CPU 11 causes the graphic display device 3 to display a message inquiring whether the designated processing start position and the processing order of each processed product may be determined. The operator presses the Y key when not changing the designation, and presses the N key when changing the designation.
In step S15, the CPU 11 determines which key has been pressed. If the Y key is pressed, the process proceeds to step S16, but if the N key is pressed, the process returns to step S14, and the designation process is repeated.

Subsequently, steps S16, S17, S1
8. In S19, a machining path data creation process for multi-cavity machining for sequentially machining all selected workpieces is executed. In step S16, the CPU 11
Follows the processing path data of each processed product from the processing start position to the processing end position sequentially from the first processed product according to the determined processing order. Then, it is determined whether or not microjoint data exists at the end of the processing path of the processed product. If microjoint data exists, the process proceeds to step S18. Then, connection data for positioning the workpiece from the current processing end position of the processed product, that is, the start position of the microjoint data to the processing start position of the next processed product, is created, and the processing of the two processed products is performed. Insert into route data. At this time, a cutting command for cutting the wire is set at the current processing end position of the processed product, and a connection command for connecting the wire is set at the processing start position of the next processed product.

On the other hand, if it is determined in step S16 that there is no micro joint data, the CPU 11
Displays a message on the graphic display device 3 in step S17 to notify the operator. If a micro joint is required, the operator sets the location and length of the micro joint using the keyboard 5 and the mouse 7. CP
U <b> 11 inserts the microjoint data into the designated location in the processing path data and causes the graphic display device 3 to display the data. FIG. 9 shows a display state when the microjoint P1 is set at the end of the processing path of the processed product A. On the other hand, if the micro joint is unnecessary, the operator instructs the continuation of the processing by using the mouse 7. Thereafter, the process proceeds to step S18, and the above-described processing is executed.

Next, in step S19, the CPU 1
1 determines whether or not the processing in steps S16, S17, and S18 has been completed for all processed products displayed on the graphic display device 3. If all the processes have been completed, the process proceeds to step S19. If not, the process returns to step S16 to perform the above-described machining path data creation processing for multi-cavity machining on the next workpiece. If all the parts have been completed (step S19: YES), step S20
In the above, the CPU 11 performs a coding process based on the machining path data for multi-cavity machining and the graphic data to generate a plurality of processed products displayed on the graphic display device 3 from the workpiece. Create a program for individual machining. Note that the processing in step S16 is a determination means,
And the graphic display device 3 correspond to the notifying means, and the processing of S18 corresponds to the connecting means.

FIG. 10 shows a processing path for processing a plurality of processed products arranged in this way. The connection of the wires is performed at the hole H1 which is the processing start position of the figure B1 having the first processing order. The processing is performed along the arrows from the hole H1 to the processing end position i of the graphic B1 at points a, b, c, d,.
This is performed via points e, f, g, and h. And
At point i the wire is cut. A microjoint is between point i and point a. Next, the workpiece is moved so that the hole H2, which is the processing start position of the figure B2 whose processing order is No. 2, matches the position of the wire. Then, the wire is connected at the hole H2, the wire is processed from the hole H2 to the processing end position j of the graphic B2, and the wire is cut at the point j. .

As described above, according to the present embodiment, the NC program considering the processing accuracy of the processed product is stored in the memory in advance, and the NC program of the required processed product is read from the memory, and the NC program of the processed product is read. NC program for processing all the arranged workpieces by developing them into graphic data representing the figure and machining path data, arranging them on the screen, and specifying the machining start position for each workpiece according to the machining order Can be created automatically. At this time, the operator is notified of a workpiece without a microjoint, so that a microjoint can be set if necessary.

It should be noted that several types of multi-cavity machining programs in which machining paths are set for a plurality of parts can be created and read and arranged as a single machined product in the next generation. This makes it possible to easily create a complicated multi-cavity machining program in which a large number of processed products are combined and nested.

Next, a second embodiment of the present invention will be described with reference to FIG.
It will be described based on. In this embodiment, when the single-piece machining program does not have microjoint data, the microjoint data is automatically created. FIG.
Steps S31 to S36 and S3 of the flowchart of FIG.
8 to S40 correspond to step S in the flowchart of FIG.
11 to S16 and S18 to S20 are the same. That is,
Only the step S37 is different, so only this step will be described.

When it is determined in step S36 that there is no microjoint data, the CPU 11 determines in step S37 that one end of the processing path of the processed product has been added.
Set micro joint data of mm. When the final processing path of the processed product is 1 mm or less, the length of the micro joint is set to the same length as the final processing path length. FIG. 9 shows a display state when the microjoint P1 is set at the end of the processing path of the processed product A. At this time, the final processing path L of the processed product A is longer than 1 mm. After the micro joint data is set in this way, S
Proceed to 38 to execute the linking process. Therefore, step S38 corresponds to a first connecting unit, and steps S37 and S38 correspond to a second connecting unit.

According to the above-described second embodiment, even when the single-part machining program does not have micro-joint data, the micro-joint data is automatically set, and the workpiece does not fall naturally from the workpiece. A multi-cavity machining program is created.

The present invention is not limited to the embodiment described above, and various changes can be made without departing from the spirit of the present invention. In the above embodiment, a machining program creating apparatus for a wire electric discharge machine has been described, but the present invention is not limited to this, and a machining program creating apparatus for an NC machining machine such as a plasma machining machine or a laser machining machine. Can be applied to

[0040]

As described above, according to the first aspect of the present invention,
The determining means determines whether or not the selected single-part machining program has microjoint data, and when it is determined that there is microjoint data, the connecting means determines whether the single-part machining program and the next single-part machining program are present. Are linked based on the arrangement position set by the arrangement position setting means, and when it is determined that there is no micro joint data, the notifying means notifies the operator that there is no micro joint data.

As a result, if a micro-joint is determined in advance and a single-part machining program is registered, a multi-piece machining program can be automatically created based on the single-part machining program. In addition, since the existence of a program for single-piece machining that does not have micro-joint data is notified, the operator directly sets the micro-joint data as needed to prevent the workpiece from naturally falling from the workpiece. be able to.

According to the second aspect of the present invention, the determining means determines whether or not the single-part machining program has microjoint data. The single-piece machining program and the next single-piece machining program are connected based on the arrangement position set by the arrangement-position setting means, and when it is determined that there is no microjoint data, the second connection means automatically After the microjoint data is created and the microjoint data is added to the single item processing program, the next single item processing program is connected based on the arrangement position set by the arrangement position setting means.

As a result, even when the single-part machining program does not have the microjoint data, it is possible to automatically create the multiple-part machining program in which the workpiece does not fall naturally from the workpiece. it can.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a basic configuration of the present invention.

FIG. 2 is a perspective view illustrating an entire configuration of a program creating device according to the present embodiment.

FIG. 3 is a block diagram illustrating an electrical configuration of the present embodiment.

FIG. 4 is a flowchart showing an operation in a single item registration mode.

FIG. 5 is a flowchart showing the operation of the first embodiment in the multiple item registration mode.

FIG. 6 is an explanatory diagram of a setting state of a machining path in a single item registration mode.

FIG. 7 is an explanatory diagram of a graphic arrangement state in a multiple item registration mode.

FIG. 8 is an explanatory diagram of a processing order setting state in a multiple item registration mode.

FIG. 9 is an explanatory diagram of a setting state of a micro joint.

FIG. 10 is an explanatory diagram of a machining path of a multi-cavity machining program.

FIG. 11 is a flowchart showing the operation of the second embodiment in the multiple item registration mode.

[Explanation of symbols]

 Reference Signs List 1 arithmetic unit 3 graphic display device 5 keyboard 7 mouse 9 NC tape puncher 11 CPU 13 ROM 15 RAM 21 hard disk device 23 floppy disk device

Claims (2)

(57) [Claims] An NC machining program creating apparatus for creating a multi-cavity machining program for machining a plurality of workpieces from a workpiece using a plurality of pre-registered single workpiece machining programs. Storage means for storing each single-piece machining program created for a plurality of types of workpieces; selecting means for selecting a single-piece machining program for a desired workpiece; An arrangement position setting means for setting an arrangement position on a workpiece, a determination means for determining whether or not the single item processing program selected by the selection means has microjoint data; and When it is determined that there is joint data, the single item machining program and the next single item machining program are placed in the arrangement position set by the arrangement position setting means. When the determining means determines that there is no micro-joint data, the worker is notified that the single-part machining program does not have micro-joint data, and the micro-joint data is An NC machining program creating device, comprising: a notifying means for enabling a new setting. 2. An NC machining program creating apparatus for creating a multi-cavity machining program for machining a plurality of workpieces from a workpiece using a plurality of types of single-piece machining programs registered in advance. Storage means for storing each single-piece machining program created for a plurality of types of workpieces; selecting means for selecting a single-piece machining program for a desired workpiece; An arrangement position setting means for setting an arrangement position on a workpiece, a determination means for determining whether or not the single item processing program selected by the selection means has microjoint data; and When it is determined that there is joint data, the single item machining program and the next single item machining program are placed in the arrangement position set by the arrangement position setting means. A first connecting means for connecting with Zui, when the determination unit determines that there is no micro joint data, automatically creates a micro joint data,
A second connection unit that adds the microjoint data to the single item processing program and then connects the next single item processing program based on the arrangement position set by the arrangement position setting unit. NC processing program creation device.