JPS5973228A - Machining electric condition set/display unit of electric discharge machining device - Google Patents

Abstract

PURPOSE:To correctly communicate machining electric conditions to workers by correcting the conditions set by a machining electric condition setter based on types of power supplies and displaying corrected values on a CRT display unit. CONSTITUTION:Electric conditions 52-82 to be set are selected by selection switches 84-98 and an upper/lower step transfer switch 100 on an electric condition setter 48a provided on a CRT display unit, and the contents are set by increase/decrease switches 104, 106. The electric conditions having been set are corrected based on types of power supplies and other factors, and the corrected values are outputted to the machining power supply as a control signal. The corrected values are displayed in numeric in parentheses on the right side of an electric condition display 48b-1 on the CRT, thus workers can easily confirm the actual electric conditions.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a machining electrical condition setting display device for an electric discharge machining apparatus, and particularly for an electric discharge machining apparatus that generates an electric discharge between a workpiece and an electrode and processes the workpiece using the discharge energy. The present invention relates to a machining electrical condition setting display device.

First, the operating principle of the electric discharge machining apparatus will be explained with reference to FIG. In FIG. 1, a workpiece 10 is made of an insulating liquid 12 (
It is placed on a table 16 in a machining tank 14 in which a machining fluid (hereinafter referred to as machining fluid) is stored. The table 16 is moved in the X-axis direction by an X-axis screw shaft 18 and a drive motor 20 for the shaft, and in the Y-axis direction by a Y-axis screw shaft 22 and a drive motor 24 for the shaft. The electrode 26 faces the workpiece 10 with the machining fluid 12 interposed therebetween, and is driven in the vertical direction in the Z-axis direction by a Z-transport screw shaft 28 and a drive motor 30 for the shaft.

The machining fluid 12 is returned to the tank 34 via the machining tank 14 and the vibrator 32 and stored therein, and is also sent from the nozzle 40 via the pipe 36 and the pump 38 to the workpiece 10 and the electrode 2.
It is injected toward the 60 gaps and circulates between the processing tank 14 and the tank 34. The relative movement between the workpiece 10 and the electrode 26 is performed by moving the table 16 on which the workpiece 10 is placed in the X-axis direction and the X-axis direction, and moving the electrode 26 in two axial directions, that is, in the vertical direction. . With this configuration, the relative movement between the workpiece 10 and the electrode 26 becomes a three-dimensional movement.

The processing power supply 42 that supplies electrical energy between the workpiece 10 and the electrode 26 is configured by, for example, a DC power supply E1 switching element Tr, a capacitor C1 charging resistor, and the switching element control circuit SC. The control device 44 controls the X, Y, and Z axis drive motors 20, 24, and
30, and uses an NC device, a copying device, or a computer.

FIG. 2 shows a pulse train output when the switching element Tr shown in FIG.

FIG. 3 shows a machining electrical condition (hereinafter also referred to as electrical condition) setting section 46 provided in a conventional electrical discharge machining apparatus.

This electrical condition setting section 46 includes a polarity changeover switch 46a,
8F circuit cut-off switch 461], SH circuit cut-off switch 46C1 addition setting Ip) i inch 46d1 addition setting fine adjustment (ΔIp) switch 46e1 pulse width (τp) switch 46f1 pause time (τ,) switch 46g, discharge time (TDOU) ) switch 46h, machining time (TDOD) switch 46i, and other various rotary switches are provided, and the output of machining conditions selected by operating these rotary switches is transmitted to the machining power source 42 shown in FIG. Processing is performed by applying desired electrical conditions between the workpiece 10 and the electrode 26 from this processing power source.

However, in the conventional electrical discharge machining apparatus configured as described above, the polarity changeover switch 46318F circuit cut-off switch 46b and the SH circuit cut-off switch 46C actually control the machining time switch 461 from the machining setting switch 46d. The electrode 26 has a value that is slightly different from the value.
and the workpiece 10. Therefore, it is necessary for the user to know in advance the electrical conditions set by the switches 4.6a to 46c during processing, and to write down the electrical conditions in a notebook or the like depending on the type of workpiece 10. However, it is necessary to switch various rotary switches 46a to 46i for selecting electrical conditions according to 100 types of workpieces, which is very inconvenient.

The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to set electrical conditions suitable for machining conditions with high accuracy, and to display the setting contents of electrical discharge machining equipment. An object of the present invention is to provide a settings display device.

In order to achieve the above object, the present invention provides a control device and a CI
In electrical discharge machining equipment equipped with an LT display device, this CR
The T display device is provided with a machining electrical condition setting section and a machining electrical condition display section, and the machining electrical conditions selected and set in the machining electrical condition setting section are input into the control device, taking into account the type of power source and other factors. It is characterized in that the machining electrical conditions are modified to appropriate machining electrical conditions under the current conditions 1, and the machining electrical conditions are applied as a control signal to the machining power source of the electrical discharge machining apparatus, and the machining electrical conditions setting section displays the modified electrical machining conditions.

Hereinafter, preferred embodiments of the present invention will be described based on the drawings. The present invention relates to an electrical discharge machining apparatus equipped with a control device 44 and a CRT display device 48, in which the control device 44 and the CILT
The display device 48 is connected to the signal transmission cable 5 as shown in FIG.
0, and the CRT display device 48 is provided with an electrical condition setting section 48a and a display section 48b. The display section 48b is divided into an electrical condition display section 48b-1, a mechanical condition display section 48b-2, and a CRT screen display section 48))-3.

The electrical condition setting section 48a and the electrical condition display section 48b-1
It is adjacent to the station, making it easy to operate. As shown in FIG. 5, the electrical condition display section 48b-1 has 8
It is divided into groups I to ■l, and two items are displayed in the upper and lower rows for each group. That is, the upper stage of the first group I is the power supply circuit selection section (TP, SH, 8F, GM) 52, the lower stage is the electrical condition package selection section 54, and the upper stage of the second group I is the polarity selection section (multi, +, -). 56.The lower row is the data setting section 58 of the SI-1 circuit, the upper row of the 3rd group Machining setting fine adjustment setting section (ΔIp) 64, lower row is gap adjustment (F) 66,
The upper row of the 5th group ■ is the pulse width setting section (τ, ) 68, the lower row is the pulse width fine adjustment setting section (Δτ,) 70, the upper row of the 6th group ■ is the rest time setting section (τ1) 72, and the lower row is the rest time The fine adjustment setting section (Δτr) 74, the upper part of the seventh group ■ is the discharge time setting section (
TDQU) 76, the lower part is the optimizer setting part 78, and the upper part of the 8th group II is the processing time setting part (TDQD) 80.
The lower part is a booster processing setting setting section 82.

On the other hand, the electrical condition setting section 48aK includes switches 84 to 98 for selecting each of the above groups I to II, an up/down changeover switch 100 for switching between the upper and lower stages γ of each group, a call switch 102 of the electrical condition display section 48b-1, and display contents. switch 104 for increasing and decreasing
．． 106 are provided.

Since the embodiment of the present invention has the above-described configuration, the setting and display of electricity and conditions are performed as follows. First, by pressing the electrical and electrical condition setting section call switch 102, the currently output pulse waveform component is displayed on the electrical condition display fA348bl.
The display items are divided into display items 52 to 82 and displayed. and,
By using the switches 84 to 98 of the electrical condition setting section 48a and the up/down changeover switch 1oO, the illustrated example has a total of 1
Six items of electrical processing conditions can be selected, and each item can be changed by incrementing or decrementing using the increase/decrease switches 104 and 106. The values changed by the increase/decrease switches 104 and 106 are once supplied to the control device 44, and the input electrical condition data is checked for conformity using a judgment table under various conditions in the control device. The electrical condition data is modified to the most suitable value under various conditions and output as a control signal to the processing power source 42 shown in FIG. The value is displayed in parentheses on the right side.

On the other hand, by selecting the electrical condition package selection section 54 using the electrical condition selection switch 84 and the up/down switch 98, an arbitrary electrical condition package for model processing in the control device 52 is called up using the switches 104 and 106. I can do things. As mentioned above, this called model package is modified according to the type of power source and other conditions, and is partially changed into an actual control signal and output, and is simultaneously displayed in each item 52 to 82 on the electrical condition display section. be done. Thereafter, the electrical conditions can be re-modified as desired using the switches 84 to 106 based on this display data.

In the above embodiment, the electrical condition setting display of an electric discharge machining device was explained, but the present invention can also be applied to the electrical condition setting display of various automatic control devices, wire-cut electric discharge machining devices, and other devices controlled using rotary switches and the like. has the same effect.

As described above, according to the present invention, the electrical conditions that were selected using the conventional rotary switch can be displayed in multiple values and characters by using the CR, T display device. Electrical conditions can be easily and accurately read. In addition, numerical values, which conventionally changed internally and were output to the machine (processing power source), now match the displayed values and can be accurately expressed to the user, making it possible to perform appropriate machining. Since a rotary switch is not required for electrical condition setting, gaps between mechanical contacts are also eliminated, allowing highly accurate electrical condition setting. Furthermore, by selecting a model processing package, effects such as efficient processing can be obtained.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing the configuration of the electrical discharge machining device, Fig. 2 is a diagram of the pulse train applied between the workpiece and the electrode, and Fig. 3 is a front view of the machining condition setting section in the conventional electrical discharge machining device h: 4 is a front view of the CfLT display device connected to the control device, and FIG. 5 is an explanatory diagram of the electrical condition setting section and the electrical condition display section of the C11T display device. The same members in each figure are given the same reference numerals, and 10 is the workpiece;
12 is a machining liquid, 14 is a machining tank, 16 is a table, 26 is an electrode, 42 is a machining power source, 44 is a control device, and 48 is a CI (
, T display device, 48a is a processing electrical condition setting section, 481]
is the machining electrical condition display section. Agent: Patent attorney Shin Kuzuno - (1 other person)

Claims (1)

[Claims] (1) In an electrical discharge machining apparatus equipped with a control device and a CRT display device, the CRT display device is provided with a machining electrical condition setting section and a machining electrical condition display section, and the machining electrical conditions selected and set in the machining electrical condition setting section are displayed. The input is input to the above control device, and the machining electrical conditions are modified to be appropriate under the current conditions by taking into account the type of power source and other factors, and are supplied as a control signal to the machining power source of the electrical discharge machining device, and the above machining electrical conditions are A machining electrical condition setting optical display device for an electric discharge machining apparatus, characterized in that the display unit displays the information. (2. In the apparatus according to claim (1), a machining electrical condition setting optical display device for an electric discharge machining device in which machining electrical conditions are built into a control device as a model machining package.