JPH06262439A - Electric discharge machine and electric discharging method - Google Patents

Abstract

PURPOSE:To easily and quickly perform a continued machining operation with no mistake by a minimum key operation without creating a program. CONSTITUTION:A device has a means 40 for selecting work by dividing operations required to machining into at least three or more works of (a) shaft moving (b) coordinate set (c) positioning an electrode 1 and a workpiece 2 (d) machining, etc., first memory means for storing a work reference program and variables and a display unit 20 for displaying a request of necessary various data in accordance with the selected operation. The device has an input means 30 for inputting the required data, second memory means for successively storing the selected work and the input data and a control means for successively calling this stored data to execute work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric discharge machine equipped with a control device capable of performing electric discharge machining by an easy operation, and an electric discharge machining method for performing electric discharge machining by an easy operation.

[0002]

2. Description of the Related Art A three-dimensionally shaped electrode is attached to the Z-axis, a work piece is placed on a working table, and an electric discharge is generated between the electrode and the work piece through a working liquid to work the work piece. It is well known that there is a so-called stamping electric discharge machine. Also in such a die-sinking electric discharge machine, numerical control is being promoted as in general machine tools.

In order to improve the machining quality and perform highly efficient machining even in die-sinking electric discharge machining, the electric discharge machining conditions are changed a plurality of times from rough machining to finish machining, and the side surface of the machined hole is finished. For this reason, it is necessary to perform relative machining between the electrode and the workpiece, and to perform a positioning operation for determining an accurate positional relationship between the electrode and the workpiece. Further, when there are a plurality of processing points on one die, after one processing is completed, many operations such as moving the electrode to the next processing position and changing the processing conditions are required. Therefore, in order to continuously operate the die-sinking electric discharge machine for efficient use, it is necessary to make numerical control, and a lot of numerical control die-sinking electric discharge machines are used.

The above-mentioned work is executed by the operator creating a program for performing the requested operation using the program code provided by the manufacturer. The following shows an example of a program for performing processing.

N1000 G01 G90 G54 C100 Z150-H100 M00 This program example simply reads the depth command input to the correction value of H100 from the upper surface of the workpiece using the absolute value coordinate system, and reads it from the command value. C10 up to 150 μm
Although the program stops the execution of the program after machining under the machining condition registered as 0, about 30 key operations are required to input only this program. Also, as you can see and understand with this program example, if the operator does not fully understand and remember the meaning and function of each code, as well as the format and rules for programming, a program that satisfies the machining request is created. Can not. For this reason, a beginner worker spends a great deal of labor.

Therefore, in order to support these programming operations, a program relating to positioning operations and machining is prepared in advance and stored in a storage device, and an operation scheduled by the operator is called by using an input device to perform a dialogue. A system in which a cursor is moved to a data input unit represented by a formula or a display device to sequentially input required data has been proposed and implemented. In the interactive type, for example, when aligning the center of the electrode in the so-called positioning work that aligns the electrode and the workpiece, which side of the corner of the workpiece is the dimensional reference plane. In other words, the display asks for the information required to execute the program in order, such as which corner to determine the position, what is the size of the electrode, and so on. There is a method to enter.

In general, the above two configurations are as follows:
A large number of programs corresponding to each work content are prepared as subprograms, and a storage device for individually storing the programs in a callable state is provided, and the work desired to be used is called by a key operation from the input device. At this time, a screen for interactively requesting data required by the control device (computer) or an input-only screen is displayed on the display unit. The control device is configured to substitute the given data into the variable portion of the called program and complete it as one program. Therefore, the operator does not have to remember troublesome program codes and rules by executing the completed program, and even a beginner can easily perform processing.

[0008]

Since the conventional simple operation method is constructed as described above, it is easy for a beginner to use. However, as beginners can operate and key operations become faster, it seems that the interactive method and the task of calling the input screen itself require considerable key operations, and the processing speed is slow because the computer performs extra processing. In order to improve workability in the end,
The worker himself creates a program and becomes a subprogram to be stored. Further, in the case of a skilled person, in order to perform a simple work, many key operations are required in the conventional device having the above-mentioned configuration, and unnecessary information has to be input, which is difficult to use in the end. , Will use the Yabari self program. Furthermore, when you want to perform a little more advanced operation, the conventional method is designed to complete each program one by one, and the operation to perform a continuous series of work becomes a complicated operation, and the editing of the program Work may be required.

The present invention has been made in view of the above problems, and it is possible to perform continuous machining operations with minimum key operation and no input error without creating a program for beginners and experts. An object of the present invention is to provide an electric discharge machine that can be processed at high speed. A second object of the present invention is to call a function with a selection key classified according to function without using a program code, and input data necessary for work execution. Match the selected series of selection key operations with the input data and store them sequentially,
In the case of execution, it is to provide an operation method in which electric discharge machining is performed according to the procedure stored as it is.

[0010]

The features of the device of the present invention are:
In an electric discharge machine that performs relative positioning of an electrode and a workpiece and performs electrical discharge machining at a desired position, the operations required from the positioning of the electrode and the workpiece to machining are (a) axis movement, (b) A selection means for classifying at least three or more tasks such as coordinate set, (c) electrode and workpiece positioning, and (d) machining and selecting the task, and a reference program and variables for performing the task. The first storage means that is stored, a display device that displays a request for various data required for work execution according to the selected operation, a data input means that inputs the requested data, and the selection means. Second storage means for sequentially storing the selected work and the data input by the data input means, and control means for sequentially calling the stored data stored in the second storage means , Lies in the fact that with.

On the other hand, the feature of the method of the present invention is that it is required from the positioning of the electrode and the workpiece to the machining in the electric discharge machining method in which the electrode and the workpiece are relatively positioned and the electrical discharge machining is performed at a desired position. (A) axis movement,
(B) Coordinate set, (c) Positioning of the electrode and the work piece, and (d) Steps for selecting a work from the above work by classifying the work, and are required for executing the selected work. The step of displaying information, the step of inputting data necessary for performing the work selected based on the display, the step of storing the selected operation order and input data in the same manner, And calling a standard program for executing each work in the order stored, and creating a selected work program by replacing the variable data in the standard program with the actual data input in the input step. And a step of executing a work using the work program.

[0012]

[Function] When one of the work selection keys provided independently for each work is selected, the data necessary for performing the work is displayed on the display device, and when the data is input by the input key, the input data is executed. One of the programs for
The work types, the variables in the program, and the actual data are sequentially stored in a state where they match each other. Similarly, the next selected work is also stored in a state where the work and the data match. When the work start is instructed, the stored information is called in the stored order and sent to the numerical control device as a completed program to continuously execute the work.

[0013]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a schematic view of a die-sinking electric discharge machine showing the entire structure of the present invention. In FIG. 1, 1 is an electrode made of copper or graphite, 2 is a work piece, 3 is a switching element, a limiting resistance, etc., and has a pulse for electric discharge machining based on information about machining conditions from a numerical controller. It is a power supply device that supplies a machining gap between the electrode 1 and the workpiece 2. 4 is the X, Y, Z, and
It is a numerical control device that performs movement control of the C and V axes and servo control during electric discharge machining based on given information. Each of the above-mentioned configurations is the same as that of the conventional numerically controlled die-sinking electric discharge machine, and detailed description thereof will be omitted.

Further, 40 is a keyboard having a plurality of work selection keys divided by work, 20 is a display device for displaying request data necessary for performing work, and 30 is request data displayed on the display device. A data input key for inputting. Reference numeral 50 is a work execution device for storing and executing a work procedure based on information input from the work selection keyboard 40 and the data input key 30 in a form in which the work procedure matches the input data in the order of input operation.

FIG. 2 shows the work selection keyboard 40, the display device 20, the data input keys 30, and the work execution device 5.
It is a block diagram which shows the more detailed structure of this invention which consists of 0. FIG. 2 shows the above-mentioned display device 20, data input key 30, work selection keyboard 40 and work execution device 5.
0, and the work execution device 50 stores a work reference program corresponding to each work selection key and variables and the like corresponding to a reference program to be described later, which are necessary for carrying out the selected work. Standard operation storage section 5 for each work
1. A variable value required for a selected work is received from the work-specific reference motion storage unit 51, is output to the display device 20 as request data, and the data input by the worker according to the display is a work procedure creation unit for each variable. The request data output unit 52 to output to 53, the work procedure creation unit 53, the work selection data selected by the work selection key 40, the variable data corresponding to the variable from the request data output unit 52, the reference operation for each work An address number for calling the reference work program from the storage unit 51 is received as an input, and these pieces of information are sequentially stored in the storage unit of the work procedure storage unit 54.
When performing work, a work reference program is called from the work-specific reference operation storage unit 51 based on the information stored in the work procedure storage unit 54, and variable values are substituted as actual data for numerical control. The programs are sequentially output to the units in the order stored in the work procedure storage unit 54. When the fixed work procedure storage unit 55 uses a series of works fixedly and repeatedly so that the data created in the work procedure storage unit 54 can be used as one macro information, all can be selected by one key selection. It is a storage device that stores a series of work so that it can be called.

FIG. 3 is a detailed view of the work selection keyboard 40 for selecting a work. Here, K1 to K4 are selection keys for accurately classifying the work required from the positioning work to the machining work and independently selecting each work. K1 is used for the work of accurately moving the X, Y, Z, C, and V axes of the machine section by a desired amount of movement. K2 is a key for selecting a so-called positioning operation in which the positional relationship between the electrode and the workpiece is measured, and the relative position of the electrode 1 and the reference plane, which is the dimensional reference of the workpiece 2, is aligned. K3 is a key for performing so-called coordinate origin setting for registering the current positional relationship between the electrode 1 and the workpiece 2 as X, Y, Z, C, and V coordinate positions.

P1 is a work function call key for a worker who calls the operation with a single key selection without the operator repeatedly performing the same operation when repeatedly using a series of work procedures. Only P1 is shown in the figure,
There are several available. Further, ENT executes the selected work after inputting various request data.

The data input key 30 is based on the request data displayed on the display device 20 by the selection of the work type menu for the work selected by the work selection keyboard 40 and the output from the request data output section 52. It is for inputting data.

Next, the operation will be described.

FIG. 4 is a main flow chart showing the overall operation of the present invention. When one work of the work selection keyboard 40 is selected in S1, a work memory file that matches the selected work stored in the work-specific reference motion storage unit 51 is selected in S2. In S3, if there are more types of the selected work, a work type menu is displayed on the display device 20. In S4, a menu selection is made from the data input key 30. The work type memory selected in S4 is called from the work-specific reference motion storage unit 51, and the variable value necessary for performing the work is displayed on the display device 20 as the request data of the request data output unit 52. Input is made to the displayed request data (S6).
The input data and the variable value are sent to the work procedure creation unit 53 and stored in the first storage unit of the work procedure storage unit 54 together with the work selection and work type (S7, S8). here,
When the work selection key of the work selection keyboard 40 is pressed again, the process returns to S2, and the operations of S2 to S8 are repeated. EN
When T is pressed, S10 is entered and it is decided whether or not the operation is fixed. When P1 is pressed, the process proceeds to S11, and the information in the work procedure storage unit 54 is copied to the fixed work procedure storage unit 55. When ENT is pressed, S12 is entered, and EN is again
When T is pressed, the work procedure creation unit 53 sequentially reads the information in the work procedure storage unit 54, and the work-specific reference motion storage unit 51 is read.
The reference program selected from the above is called and the input data is substituted into the variables to complete the program, and the numerical controller 4
Transfer the program to. The numerical controller 4 executes the work based on the transferred program.

Here, the above-mentioned work, work type menu,
FIG. 6 shows a table showing the relationship between the required data, variables and reference programs. As shown in the table of FIG. 6, each work is independent as a group. The selection keys K1 to K4 on the work selection keyboard 40 correspond to the work classification in the leftmost column. For example, if K1 is selected, then K
Group information for one move is selected. Here, the axis of work type 1 is specified and the reference program required for axis movement is called (09010 for X axis), the requested data is X axis movement data, and the variable H010 is the variable number in the program. Is. The request data output unit 52 calls the request data display corresponding to H010 and displays the X movement amount ***. Since there are some types of work for K2 positioning work (when positioning at corners),
After the work type 1 is selected, the submenu of the work type 2 is displayed, and when the selection command is received, the reference program is called. After that, similarly, the request display is output and the variable value data is input. These key operations,
The selected work type, variable data, and the like are sequentially sent to the work procedure creation unit 53, and actual data corresponding to the key operation sequence and the variable value are stored in the work procedure storage unit 54.

FIG. 7 shows an example of a standard program relating to machining. 08111 is an address number for calling the program, and H040 and H04 are shown in the program.
2, H045 is a variable. In this example, the controller 4
No. C100, C101, and C102 are used to perform machining at a depth of 20 mm. One electrode that performs relative movement between the electrode 1 and the workpiece 2 under each machining condition. For roughing, semi-finishing and finishing. The required data here is the reduction amount of the processing depth electrode 1 with respect to the desired processing size.

FIG. 5 shows a work selection keyboard 40, a data input key 30, a display device 20, and a work-specific reference action storage section 5.
3 is an operation flowchart showing the above-mentioned operations regarding the No. 1 and the request data output unit 52.

When one of the tasks is selected by the task selection keyboard 40 (S20), one of the task-specific reference motion storage sections 51 storing the program, variable value, task menu, etc. corresponding to the task is selected. Is called (S2
1). The work-based reference motion storage unit 51 stores the information shown in FIG. If the called work has a plurality of types, the work type menu is displayed (S22, S23).
A work is selected with the data input key 30 (S24). The selected data is transferred to the work procedure creation unit 53 (S2
5). If there is a sub menu here, enter S27 S
The display of 27 to S29, the data input and the data transfer are repeated until the sub menu disappears (S26).
In the above operation, the final reference program is selected, and the variable values required for execution are output to the request data output unit 52 (S31), where the address number of the finally selected reference program is also created as a work procedure. It is stored in the work procedure storage unit 54 via the unit 53. The request data output unit 52 outputs the request data display that matches the received variable number and is displayed on the display device 20 (S32).
When data is input by 0, the data and variable **
The * is sent to the work procedure creation unit 53, and is stored in the storage unit of the work procedure storage unit 54 as described above. If there is no plural work in S22, the selected work number is sent to the work procedure creating section 53 (S30), and the operations from S31 onward are performed.

Next, in the work procedure creating section 53, when one menu is selected from the work selecting keyboard 40 and the data input key 30, information is sent to the work procedure storing section 54 each time. Also, the calling address number of the reference program corresponding to the menu finally selected,
It is sent to the work procedure creation unit 53. Work procedure creation unit 53
Transfers the above-mentioned selected work key information and reference program address number to the first storage unit of the work procedure storage unit 54. Note that the variables (H999-H000) have different address numbers so as not to be duplicated in each reference program except those commonly used. Here, when the operator inputs numerical data from the data input key 30 while looking at the request information displayed on the display device 20 and presses the ENTER key, the cursor moves to the next request data section and waits for the next data. Becomes Thus, each time data is input and the ENTER key is pressed,
The data is sent to the work procedure creating unit 53 at the same time, and is stored in the first storage unit of the work procedure storing unit 54 corresponding to the variable H ***.

In this way, when the request data necessary for one work is input, all the data are held in the first storage section of the work procedure storage section 54. Here, when performing only one work, when the ENT key of the work selection keyboard 40 is pressed, the work procedure creation unit 53 causes the work procedure storage unit 54 to
A program is created which sequentially calls the information stored in. The completed program is sent to the numerical control device 4 and the work is executed.

Further, when the data for one work is input and then another work key of the work selection keyboard 40 is selected again, the work procedure storage section 54 is operated in the same manner as described above.
Necessary data is sequentially stored in the second storage section of the.
In this way, a series of operations from the conventional positioning to machining are stored in the operation procedure storage unit 54 via the operation procedure creating unit 53. Further, when the stored series of work is repeatedly performed, or particularly when the work is frequently used, the P1 key of the work selection keyboard 40 is pressed to send work information to the fixed work procedure storage unit 55. It is fixed and stored until a memory delete key (not shown) is pressed. A plurality of P1s (P1 to Pn) are prepared, and a fixed series of operations can be easily called and executed in response to a request. With the P1 to Pi keys, when the same kind of work is performed but only the data to be input to the request data is different, a series of key operations up to the state before the input of the request data is fixed, and menu selection operation or the like is performed. You can jump and recall the final input display with a single selection. Further, even if a plurality of works are fixed by the P1 to Pi keys and then the work is selected by the P1 to Pi key operation instead of the work menu key operation, the P1 to Pi key operation sequence is also the work. It is stored in the work procedure storage unit 54 via the procedure creating unit 53 as described above, and when the work is executed, the stored contents are sequentially called from the work procedure storage unit 54 to execute the work.

FIG. 8 is an operation flow chart showing a series of processes when the present invention is carried out by using one CPU in the construction of the work execution apparatus 50. In this case, the work procedure creation unit 53 uses a CPU and the work-specific reference motion storage unit 51
A storage medium such as a ROM or a floppy disk is used, and information is addressed and stored in a callable state. Along with the key operation, the work procedure creation unit 53
Is achieved by sequentially calling and processing information from the work-specific reference operation storage unit 51 and the request data output unit 52.

Although the present invention is constructed independently of the numerical control device, it is also possible to add this configuration to the numerical control device to provide one function.

[0031]

Since the present invention is configured as described above, various operations from positioning to machining can be continuously performed easily without using a program code, and the operations can be performed. Since the procedures are separately classified and stored in sequence, the degree of freedom is high, and more complicated work can be easily performed. Further, since the program creation process is performed at once after the operation is completed, the processing speed is increased.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing the overall configuration of a die-sinking electric discharge machine according to the present invention.

FIG. 2 is a block diagram showing an essential part of the present invention.

FIG. 3 is a detailed view of a work selection keyboard for selecting a work according to the present invention.

FIG. 4 is a main flowchart showing the overall operation of the present invention.

FIG. 5 is an operation flowchart relating to a work selection keyboard, a data input key, a display device, a work-specific reference motion storage unit and a request data output unit of the present invention.

FIG. 6 is a table showing the relationship among a work type menu, required data, variables and reference programs of the present invention.

FIG. 7 shows an example of a reference program for processing according to the present invention.

FIG. 8 is an operation flowchart when the present invention is implemented using a CPU.

[Explanation of symbols]

 1 Electrode 2 Workpiece 3 Machining Power Supply 4 Numerical Control Device 20 Display Device 30 Data Input Key 40 Work Selection Keyboard 51 Work Selection Standard Operation Storage Unit 52 Request Data Output Unit 53 Work Procedure Creation Unit 54 Work Procedure Storage Unit 55 Fixed Work Procedure Memory

Claims (2)

[Claims] 1. In an electric discharge machine for performing relative positioning of an electrode and a workpiece and performing electrical discharge machining at a desired position, an operation (a) axis movement required from positioning of the electrode and the workpiece to machining, (B) Coordinate set, (c) Positioning of the electrode and the work piece, and (d) Selection means for selecting the work by classifying it into at least three or more works such as machining, and a reference for performing the work. A first storage means for storing programs and variables, a display device for displaying a request for various data required for work execution according to a selected operation, and a data input means for inputting the request data, Second storage means for sequentially storing the work selected by the selection means and the data input by the data input means, and the storage data stored in the second storage means are sequentially called to perform the work. An electric discharge machine having control means for controlling the electric discharge machine. 2. In an electric discharge machining method in which relative positioning of an electrode and a workpiece is performed and electric discharge machining is performed at a desired position, the work required from positioning the electrode and the workpiece to machining is (a) axis movement. , (B) coordinate set, (c) positioning of electrode and work piece, and (d) machining operation, and a step of selecting a task from the above tasks, and a step required to perform the selected task. Displaying the information to be displayed, inputting data necessary for performing the work selected based on the display, storing the order of the selected operation and the input data in a matched manner, and And a step of calling a standard program for executing each work in the order stored in, and the actual data input in the input step to the variable data in the standard program. Performing the step of creating a selected work program replaced over data, a work using the work program, and wherein the electrical discharge machining method.