KR950017037A - Power control device of wire cut electric discharge machine - Google Patents

Abstract

The present invention relates to a power control device for a wire cut electric discharge machine, and aims at enabling an innovative synergistic effect of the machining speed and stable electric discharge machining while maintaining a good surface roughness.

Features of the Invention: A microcomputer operated by data input from an operator to control the overall operation of the system, and a predetermined control voltage interlocked with the data output from the microcomputer and the pulse data output from the high speed pulse generator. A high speed pulse amplifier for outputting a signal, a first switching unit for interrupting power supplied from a driving power supply terminal to a workpiece based on a control voltage output from the high speed pulse amplifier, and outputted from the microcomputer The low speed pulse amplifier unit outputs a predetermined control voltage in association with the data and the pulse data output from the low speed pulse generator, and the output from the driving power source based on the control voltage output from the low speed pulse amplifier unit. A second switching unit for interrupting the power supplied to the second switching unit and a transistor (QCH) of the second switching unit A comparator which compares the output voltage with a set reference voltage and outputs processing start data, a time delay unit which is operated by the data output from the comparator and delays a predetermined time, and is determined based on the comparison unit and the time delay unit Compares the latch portion for outputting the data with the NAND gate operated by the latch portion to output the counter start data, the counter start data output to the NAND gate, and the data output from the low speed pulse generator. And a no-load waiting time comparison section for controlling the microcomputer.

Description

Power control device of wire cut electric discharge machine

Since this is an open matter, no full text was included.

1 is a view showing a wire cut discharge power control apparatus according to the prior art,

2 is a waveform diagram showing a waveform diagram and an operating state of a discharge voltage and a discharge current generated by FIG.

3 is a view showing a power control device for a wire cut electric discharge machine according to the present invention.

4 is an operation timing chart and a discharge current generation waveform diagram of each part shown in FIG.

Claims (5)

A microcomputer operated by the data input from the operator to control the overall operation of the system, and a high speed for outputting a predetermined control voltage in conjunction with the data output from the microcomputer and the pulse data output from the high speed pulse generator. A first switching unit which regulates the power supplied from the driving power supply terminal to the workpiece based on the pulse amplifier, the control voltage output from the high speed pulse amplifier, and the data and low speed pulses output from the microcomputer; The low speed pulse amplifier unit outputs a predetermined control voltage in conjunction with the pulse data output from the generator, and the power supplied from the driving power supply terminal to the workpiece based on the control voltage output from the low speed pulse amplifier unit. The second switching unit to be interrupted and the detected voltage and setting detected by the transistor QCH of the second switching unit A comparator which compares the reference voltage and outputs processing start data, a time delay unit which is operated by the data output from the comparator and delays a predetermined time, and outputs predetermined data based on the comparison unit and the time delay unit And a latch portion which is operated by the latch portion to output counter start data, and counter start data output to the NAND gate and data output from the low speed pulse generator. An apparatus for controlling an electric cut discharge machine, comprising: a no-load standby time comparison unit for controlling a computer. The power control apparatus of claim 1, wherein the second switching unit (16) is configured by connecting a resistance of a specific constant in series to a terminal of the switching element. The method of claim 1, wherein the comparing unit 17 compares the detected voltage detected by the transistor QCH of the second switching unit 16 with the reference voltage ZDI to be set and outputs processing start data according thereto. A power control device for a wire cut electric discharge machine characterized in that it is configured to interrupt the low speed pulse and the high speed pulse. 2. The wire according to claim 1, wherein the high speed machining current is generated for a predetermined time by the operation of the high speed machining circuit 11-13 and the low speed machining circuit 14-16, and the high speed machining current is generated between the poles. Power control device of the electric wire cut electrical discharge machine, characterized in that to prevent the disconnection of. The wire of claim 1, wherein when the no-load waiting time comparison unit 21 detects the no-load waiting time and determines an unstable discharge state, the wire is characterized by generating a reduced ON data corresponding thereto to control the inter-pole current. Power control device for cut electric discharge machine. ※ Note: The disclosure is based on the initial application.