KR930016177A

KR930016177A - Discharge Detection Circuit of Discharge Machine

Info

Publication number: KR930016177A
Application number: KR1019920000345A
Authority: KR
Inventors: 김병기
Original assignee: 김회수; 금성기전 주식회사
Priority date: 1992-01-13
Filing date: 1992-01-13
Publication date: 1993-08-26
Also published as: KR940007088B1

Abstract

와이어 전극과 픽공물이 대항해 있고 가공액이 개재된 상태에서 양극간에 전압을 인가하여 피가공물이 전기방전에 의해 용융상태로 되게 한 후, 다시 이를 미세한 분상태로 만들고, 이를 가공액으로 하여금 냉각 제거토록하는 방전가공기에 있어서, 방전상태를 정확히 판별하여야만 높은 가공 정밀도와 높은 가공속도를 얻을 수 있는바, 이 방전상태 검출 수단중의 하나로써 복수개의 특정한 파장을 얻기위한 밴드패스필터를 갖는 광학계를 이용해서 특정한 파장의 움직임을 파악하여 정상 혹은 비정상의 상태를 검출할 수 있도록 한 것이다.In the state where the wire electrode and the picking object are opposed and the processing liquid is interposed, voltage is applied between the anodes so that the workpiece is melted by electric discharge, and then made into fine powder again, which causes the processing liquid to be cooled and removed. In the electric discharge processing machine, it is possible to obtain high processing accuracy and high processing speed only when the discharge state is accurately determined. As one of the discharge state detection means, an optical system having a band pass filter for obtaining a plurality of specific wavelengths is used. By detecting the movement of a specific wavelength to detect a normal or abnormal state.

Description

Discharge Detection Circuit of Discharge Machine

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음As this is a public information case, the full text was not included.

제3도는 주파수 스펙트럼 분포도, 제4도는 본 발명 방전 가공기의 방전 검출회로도에 대한 전체 블록도, 제5도는 옵티컬 센싱의 계통도.3 is a frequency spectrum distribution diagram, FIG. 4 is an overall block diagram of a discharge detection circuit diagram of the electric discharge machine of the present invention, and FIG. 5 is a system diagram of optical sensing.

Claims

An optical sensor unit (OSU ₁ -OSU) for condensing optical signals generated at the upper guide 23 for guiding the wire electrode 21 and the melting temperature of the workpiece 22 to be processed and the melting temperature of the wire electrode 21. ₄ ) and a filter 25B1 for passing only signals of a specific band to the output signals of the optical sensor units OSU _{1 to} OSU ₄ supplied through the optical fiber OSU ′, and through the filter 25B1. A light receiving unit 25B ₂ for converting the supplied optical signal into an electrical signal, amplifying and shaping it, and then comparing the optical signal with a reference voltage Vref at a predetermined level and outputting it as a quantized signal V _O2 according to light intensity; And a state discriminating unit (25) for detecting a change in a specific wavelength based on the output signal of the light receiving unit (25B ₂ ) to discriminate between normal processing or abnormal processing image.

2. The quantized signal V _O1 -V according to claim 1, wherein the state determining unit 25 ′ is quantized according to the intensity of light output to the light receiving unit 25B ₂ and the other light receiving units 25A ₂ , 25C ₂ , and 25D ₂ . Material and processing speed of the workpiece 22 according to the first to fourth counters 25'A-25'D for counting _O4 ) within a predetermined time and an address A _O -A _n designated from the outside. , And compares the output value of the knowledge base 25'J with the output value of the knowledge base 25'J and the knowledge base 25'J to output the reference value according to the wire material. A comparator 25'E-25'H for outputting a signal and an output signal of the comparator 25'E-25'H are compared with a reference value selected as the melting temperature to discriminate the output of the discharge voltage control signal accordingly. A discharge detection circuit of a discharge machine, characterized by comprising a negative portion 25'I.

※ Note: The disclosure is based on the initial application.