JPH05253794A - Electric discharge machining method and device thereof - Google Patents

Abstract

PURPOSE:To execute a preparatory work in electric discharge machining simply and correctly by an operator. CONSTITUTION:This electric discharge machining device is provided with means 12, 21 to input guidance indicating preparatory procedures through display or voice, an operation command editing means 22 to define the guidance by programing, a means 23 to edit the message of the guidance, a means 14 to analyze the content of the edited operation command, and means 26, 28 to output the message of display or voice, so that the program of guidance indicating the preparatory procedures can be freely prepared and the preparatory work can be executed following to the guidance.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric discharge machining method and apparatus for improving setup work in electric discharge machining.

[0002]

2. Description of the Related Art FIG. 6 is a block diagram showing a conventional electric discharge machine, in which 1 is an electrode, 2 is an X-axis motor, 3 is a Y-axis motor, 4 is an X-axis motor 2 and a Y-axis motor 3. The XY cross table 5, which is configured to be freely movable in the X-axis direction and the Y-axis direction, is detachably mounted with the electrode 1 having a predetermined shape, and is movable in the Z-axis direction by the Z-axis motor 6. The lift shaft is made up, 7 is a position detector for detecting the amount of rotation of the X-axis motor 2 and the Y-axis motor 3, and 8 is a Z-axis motor 6
A Z-axis scale for detecting the amount of movement of the lifting shaft 5 by means of, a contact sensing circuit 9 for positioning the end surface by electrical conduction between the electrode 1 and the workpiece, and 10 for automatically detecting the electrode. An electrode exchange device that enables exchange, 11
XY cross table 4 and lifting shaft 5
A hand operation box for moving the machine, 12 is a medium for inputting an NC program for moving the XY cross table 4 and the lifting shaft 5 by automatic operation, a paper tape, a floppy desk and a keyboard, and 13 is a box from the hand operation box 11. A hand operation box control means for making it possible to transfer the axis data and the like to the axis movement control means 15, and 14 is a command data of the NC program by a paper tape, a floppy desk and a keyboard which is an input medium of the NC program, that is, an operation editing means. Operation command analysis means for analyzing whether the operation command by the NC program edited by 22 is program coordinate zero setting, end face positioning, or machining command for electric discharge machining, 15 is the hand operation box control means 13 and The axis data obtained by the operation command analysis means 14 is used as the X-axis motor 2 and Y. Axial movement control means for outputting to the motor 3 and the Z-axis motor 6 to drive the XY cross table 4 and the lifting shaft 5, 16 is a position detector 7, a Z-axis scale 8 to determine the positions of the XY cross table 4 and the lifting shaft 5. Detecting machine position detecting means, 17 is an electrode exchanging device control means for transferring the electrode exchanging command analyzed by the operation command analyzing means 14 to the electrode exchanging device 10, and 22 is manual feeding to a workpiece or a reference sphere. , Operation command editing means capable of editing only the operation of program coordinate zero setting, end face positioning, and electric discharge machining command by the NC program, and 24 is operation command analyzing means 1
According to the contents of the operation command of the NC program analyzed in 4, manual valid / invalid judgment means for judging whether the setup function such as manual feed, end face positioning, zero setting of program coordinates, electrode replacement, etc. is effective, 20 is above. Hand operation box control means 13, motion command analysis means 14, axis movement control means 1
5, machine position detection means 16, electrode exchange device control means 1
7. Motion editing means 22 and manual validity / invalidity judgment means 24
It is an NC control device having.

FIG. 7 is a detailed view of a conventional hand operation box 11. Reference numeral 11a is a button for selecting an axis to be moved by manual feeding, 11b is a button for selecting an end face positioning mode for positioning by contact detection due to electrical conduction between the electrode 1 and the workpiece, and 11c is a program coordinate set to zero. Button.

FIG. 8 shows a corner 1 of a conventional workpiece 101.
00 is manually fed by the axis selection key 11a of the hand operation box 11, end face positioning by the end face positioning selection key 11b, and program coordinate zero setting by the set zero key 11c and end face positioning selection key 11b.
It is explanatory drawing which shows the setup operation by manual operation when making a corner into the origin on a program coordinate. In the figure, movements 31, 34, 35, 38, which are directed in the direction of the arrow indicated by the solid line,
41 is the XYZ of the electrode 101 by manual feeding
It shows a manual fast-forward to approach the end face or separate from the end face, and the movements 32, 36, 39 in the direction of the arrow shown by the wavy line are actually determined by the contact positioning by electrical conduction between the electrode 1 and the workpiece 101. Workpiece 101
3 shows a manual positioning feed for determining the end face position of FIG. Further, in the operations 33, 37, 40, 42 at the contact position, the end surface position of the workpiece 101 is set to the program coordinate of zero for each axis.

In the setup operation in the conventional electric discharge machining,
When the NC program is activated, the operation command analysis unit 14 analyzes the contents of the operation command of the NC program edited by the operation command editing unit 22, and the manual operation is enabled / invalid if the operation is effective according to the analyzed operation command contents. When it is judged by the invalidity judgment means 24, the operator operates the keys on the hand operation box 11 according to the setup procedure, and while manually controlling the respective axes by the hand operation box control means 13 and the axis movement control means 15, manual feeding and end face positioning. Also, setup work such as zero setting of program coordinates is performed. In this way, the reference electrode 1 is, for example, as shown in FIG.
The end face can be positioned to the corner position of. However, if the operator performs an erroneous operation different from the setup procedure, the manual valid / invalid judging means 24 judges that the operation is invalid, and disables the execution of the operation. Therefore, the operation must be redone according to the setup procedure.

On the other hand, it is known that, for example, inspection items before the start of electrical discharge machining are sequentially instructed to the operator by words (Japanese Patent Laid-Open No. 58-77409). However, the technique disclosed in the publication is related to fire prevention of an electric discharge machine, and is not only related to setup work for electrodes and a workpiece in electric discharge machining, and the content of voice instructions is predetermined by a program. Therefore, the operator cannot change the contents.

[0007]

Since the conventional electric discharge machining apparatus is constructed as described above, in the setup work by manual operation in electric discharge machining, the approach of the electrode to the work piece by the manual feeding (workpiece machining) (Including detachment from the workpiece), end face positioning by electrical connection between the work piece and the electrode, zero setting of program coordinates after end face positioning, and the procedure for performing three operations must be accurately grasped by the operator before starting work. This is not only a burden on the operator, but it is not only a burden, but if the worker is a beginner, it takes time because the procedure must be considered even for the same setup work.

The present invention has been made in order to solve the above problems, and can easily and accurately perform setup work such as manual feeding of an electrode to a workpiece, end face positioning, and zero setting of program coordinates. To be able to freely program a guidance for instructing a setup procedure by means of a display or voice output, and to obtain an electric discharge machining method and device for performing a setup work according to the programmed guidance. With the goal.

[0009]

In order to achieve the above object, the electric discharge machining method according to the present invention displays a voice or voice input guidance for instructing a procedure of a setup operation by manual operation for an electrode and a workpiece. The input guidance is automatically programmed according to the work procedure, and the setup work is performed according to the displayed guidance or voice output of the programmed guidance.

Further, the electric discharge machining apparatus according to the present invention has an input means for displaying or inputting the above-mentioned guidance by voice, an operation command editing means for programming the guidance according to a work procedure, and a display message or voice for showing the content of the guidance. A message editing means for editing a message, an operation command analyzing means for analyzing the content of the operation command edited by the operation command editing means, and an output means for outputting a guidance message are provided.

[0011]

In the present invention, the operator can freely input the guidance for instructing the setup work procedure one after another while looking at the character display on the CRT screen or the hand operation box.
Since the inputted guidance is automatically edited according to the work procedure, the setup work may be carried out in accordance with the display or voice output of the guidance thus edited.

[0012]

1 is a block diagram of an electric discharge machine according to an embodiment of the present invention. In the figure, 1 to 10, 12, 15
17 to 24 are the same as the conventional device of FIG. 1
Reference numeral 1 is a hand-operated operation box to which an LED character display for displaying the programmed guidance of the setup operation is added, and a specific configuration example thereof is shown in FIG. Reference numeral 13 is a hand operation box control means for controlling the hand operation box 11 having a function of displaying a guidance message on the LED character display of the hand operation box 11. Reference numeral 12 is a keyboard, paper tape, floppy disk, etc. for inputting a message for editing the NC program or displaying the setup procedure guidance defined by the NC program on the CRT screen or the LED character display of the local operation box 11. It is a means. Reference numeral 14 is an operation command analysis means for analyzing whether the operation command of the NC program is a setup procedure guidance by display, a voice guidance, or a machining command for performing electric discharge machining by automatic operation. Reference numeral 21 is a microphone for voice inputting a message for voiced setup procedure guidance defined by the NC program. 22 is a NC program that defines the guidance for the procedure of setup operations such as manual feeding to the workpiece or reference sphere, zero setting of program coordinates, end face positioning, etc., and setup operation guidance and electric discharge machining commands in NC program operation. Is a motion command editing means capable of editing the. Reference numeral 23 is a message editing means for editing a message for displaying a guidance display message or a voice output. Reference numeral 25 is a display message storage means for storing a message for displaying the guidance on the CRT screen and the LED character display of the hand operation box 11.
Reference numeral 26 indicates the guidance of the display message storage means 25 by NC.
It is a message display means for displaying on a CRT screen in the control device 20 and a local operation box. Reference numeral 27 is a voice message storage means for storing a voice message when voice guidance is given. 28 is a voice message storage means 2
It is a voice message output means for voice-outputting the guidance of No. 7 to the speaker in the NC control device 20.

FIG. 2 is a detailed view of the operation surface of the hand operation box 11 to which an LED character display for displaying the setup operation guidance programmed by the NC program of the present invention is added. 11a to 11c are the same as the conventional hand operation box shown in FIG. Reference numeral 11d is an LED character display for displaying guidance.

FIG. 3 is an explanatory diagram showing an editing screen for realizing the message editing means 23 for editing the guidance message. The left screen of FIG. 3 is a CRT screen or a screen for editing a message displayed on the LED character display 11d of the hand operation box 11, and the right screen is a screen for editing guidance by voice output of a speaker or the like built in the NC control device. Is. Reference numeral 60 indicates the registration numbers of the display messages, and 61 indicates the message contents corresponding to those registration numbers. If DISP (registration number) in the NC program; The message corresponding to is displayed on the CRT screen and LE on the local operation box 11.
This is used in the NC code defined to be displayed on the D character display 11d. Reference numeral 62 is a registration number of the voice output message, and 63 is a comment of the stored message contents. It is used in the NC code that is defined so that the voice output message corresponding to is output to the speaker in the NC control device. Reference numerals 64 and 65 are switches for recording and stopping recording of a voice output message by the microphone 21.

FIG. 4 shows an embodiment in the case where the setup operation for positioning the corner 100 of the workpiece 101 is performed by using the present invention. In the figure, 31, 34, 35,
38, 41 are manually fed as in FIG. 8, 32, 36, 39
Indicates manual end face positioning. Also, 130, 133, 1
Reference numerals 37, 140 and 142 indicate that, in this order, a message is displayed on the CRT screen or the LED character display 11d of the hand operation box 11 or guidance is provided by voice output.

Next, FIG. 5 shows an embodiment of the NC program in the case where the NC program provides guidance for instructing a procedure for setting up the corner positioning. Steps 150, 156, 171, 177 in the NC program indicate comments. Step 151 is an NC code for instructing replacement with a reference electrode for corner positioning. Steps 152 and 153 are the guidance 130 shown in FIG. 4, and steps 157 and 158 are the guidance 13
3 and steps 172 and 173 are guidance 137,
Steps 178 and 179 provide guidance 140, steps 186 and 187 provide guidance 142, and CR
LED character display 11 on T screen or operation box 11 at hand
The message is displayed on d and the sound is output. Further, steps 155, 170, 176 and 182 are NC codes for clearing the message display. M00 in steps 154, 159, 174 and 180 is an NC code for temporarily stopping the NC program until the next start key is pressed. Steps 160, 175, 181
G92 code is a code for zeroing the program coordinates corresponding to the manual zeroing of the program in FIG. Steps 184 and 185 are T1 by G00 fast forward.
0 Considering the amount of misalignment of the reference electrode, the corner position and T
The reference electrode T10 is moved to a position in which the cores of the 10 reference electrodes are aligned (the reference electrode T10 is a position of X5 mm, Y-5 mm, Z5 mm with a radius of 10 mm), and the position is used as the origin of the program coordinates. The M02 code of step 188 is the end code of this NC program.

Next, the operation will be described. In each set-up procedure guidance shown in FIG. 4, a worker inputs a message by displaying or observing a message on the CRT screen or the LED character display 11d of the operation box 11 at hand, as defined by the NC program. The input message is edited by the message editing unit 23, the edited display message is stored in the display message storage unit 25, and the voice message is stored in the voice message storage unit 27. In addition, the operation command editing means 22 edits the guidance of the input message according to the setup work procedure and the input electric discharge machining command according to the machining procedure. For example, in the case where guidance is provided in the NC program for instructing a procedure for setting up corner positioning, steps 152, 153, and 1 in FIG.
57, 158, etc., the program is edited with the DISP command and the VOICE command. When actually setting up the positioning of the corner, the operation command analysis means 14 sets N
Whether the operation command of the C program is a setup procedure guidance by display, a voice guidance, or an electric discharge machining command is analyzed. If the operation command is, for example, a display guidance, a message of the display guidance is displayed by the message display means 26. Since the characters are sequentially displayed on the CRT screen or the LED character display 11d of the hand operation box 11, the operator can set up the positioning of the corner according to the display guidance. Further, even when the operation command is voice guidance, the comments are sequentially output by voice by the voice message output means 28, so that the positioning of the corner can be similarly set up. Of course, the setup may be performed by both the display and the voice guidance.

In the above embodiment, the corner positioning procedure as the setup operation is performed by the NC program. However, setup operations other than the corner positioning may be performed, and guidance for instructing the setup procedure by a programming method other than the NC program may be provided. May be defined.

[0019]

As described above, according to the present invention, the operator is manually fed between the electrode and the workpiece, the end surface is positioned,
It is possible to create a program that guides the setup procedure such as zero setting of program coordinates by displaying on the CRT screen or the character display of the operation box on the hand or by outputting voice to the speaker, and instructing the procedure for all setup work. The effect is that the guidance can be freely created.

Further, according to the present invention, the operator can perform setup work such as manual feeding between the electrode and the workpiece, end face positioning, and zero setting of program coordinates on the CRT screen or the character display of the hand operation box. All that is required is to follow the guidance given by the display and the voice output to the speaker, and the setup work can be performed by the same procedure regardless of whether it is a beginner or an expert.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an electric discharge machine showing an embodiment of the present invention.

FIG. 2 is a front view of a hand operation box equipped with an LED character display in this embodiment.

FIG. 3 is an explanatory diagram showing a message edit screen according to the present embodiment.

FIG. 4 is an explanatory diagram showing an example of positioning a corner according to a guidance using the present invention.

FIG. 5 is an explanatory diagram showing an example of an NC program for defining a corner by defining guidance in the present invention.

FIG. 6 is a configuration diagram of a conventional electric discharge machine.

FIG. 7 is a front view of a conventional hand operation box.

FIG. 8 is an explanatory diagram when performing conventional corner positioning.

[Explanation of symbols]

 1 Electrode 2 X-axis motor 3 Y-axis motor 4 XY cross table 5 Lifting shaft 6 Z-axis motor 7 Position detector 8 Z-axis scale 9 Contact sensing circuit 10 Electrode replacement device 11 Hand operation box 12 Paper tape, floppy disk, keyboard 13 Hand Control box control means 14 Operation command analysis means 15 Axis movement control means 16 Machine position detection means 17 Electrode replacement device control means 20 NC control device 21 Microphone 22 Operation command editing means 23 Message editing means 24 Manual valid / invalid determination means 25 Display message Storage means 26 Message display means 27 Voice message storage means 28 Voice message output means 100 Workpiece corner 101 Workpiece

Claims (2)

[Claims] 1. A guidance for instructing a procedure of a setup operation by a manual operation for an electrode and a workpiece is displayed or input by voice, the input guidance is programmed according to a work procedure, and then the programmed guidance is displayed. Alternatively, an electrical discharge machining method in which setup work is performed according to the voice output. 2. Input means for displaying or voice-inputting guidance for instructing a procedure of setup work by manual operation for electrodes and a workpiece, operation command editing means for defining the guidance by programming, and contents of the guidance. The electric discharge machining apparatus includes: a message editing unit that edits a message that represents the action command; an operation command analyzing unit that analyzes the content of the operation command edited by the operation command editing unit; and an output unit that outputs the guidance message. .