Mutual-induction decoupling control method of multi-station linear cutting wire electrodes

Abstract

The invention provides a mutual-induction decoupling control method of multi-station linear cutting wire electrodes. The mutual-induction decoupling control method comprises the following steps: an original current located on the wire electrode between every two stations is obtained through a current sensor; the original currents are amplified through an amplification circuit to obtain amplified currents; the amplified currents are inverted through an inverting proportional amplifier to obtain inverted currents; and the inverted currents serve as primary side currents of a current mutual inductor, the wire electrode between every two stations serves as a secondary side of the current mutual inductor, the current mutual inductor generates a mutual-induction current on the wire electrode between every two stations, and thus the current of the wire electrode between every two stations is decoupled and compensated by the corresponding mutual-induction current. The mutual-induction currentgenerated on the wire electrode between every two stations by the current mutual inductor and interference waves generated by the wire electrode are mutually counteracted, the influences of the otherstations are eliminated, and the consistency and precision of simultaneous machining of multi-station synchronous electric spark linear cutting are ensured.

Description

technical field [0001] The invention relates to the technical field of electric discharge wire cutting, in particular to a mutual inductance decoupling control method for multi-station wire cutting electrode wires. Background technique [0002] In the multi-station synchronous wire cutting experiment, it is found that when a short circuit occurs in one of the processing sections of the station, the other stations can continue to process for several minutes. This shows that the multi-station wire cutting is different from the previous single-station wire cutting. The electrode wires of different processing stations in the multi-station wire cutting will interfere with each other and cannot be detected and analyzed as a whole discharge state. Further experimental research found that if one of the multi-station wire cutting stations is short-circuited, although the other station can continue to discharge for several minutes, the processing current shows a gradual weakening tren...

AI Technical Summary

Problems solved by technology

The mutual interference of induced currents between different stations will seriously affect the consistency and precision of processing. Therefore, the processing status between different stations is analyzed to ensure that each station is processed independently without interference from other stations. , it is very important for the consistency and precision of simultaneous processing of multi-station wire cutting

[0003] At present, the research on the interference between the multi-station synchronous EDM stations at home and abroad is still in the experimental research stage, and there is no specific and practical research method for the mutual interference between the stations during processing.

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