Line electrode constant tension control electric spark grinding machining device

Abstract

The invention discloses a line electrode constant tension control electric spark grinding machining device which comprises a base. A wire pay-off mechanism, a wire feeding mechanism and a wire take-upmechanism are arranged on the base. The wire pay-off mechanism comprises a magnetic powder brake installed on the base and a pay-off wheel fixedly connected with a rotating shaft of the magnetic powder brake. The magnetic powder brake is electrically connected with a controller. The wire feeding mechanism comprises a constant tension sensing mechanism, ceramic bars and a plurality of conveying rod mechanisms. The constant tension sensing mechanism comprises a supporting frame and a plurality of tension detection guiding wheels rotationally arranged on the supporting frame, wherein one tensiondetection guiding wheel is connected with a tension sensor, a working solution groove is formed in the base, the two ceramic bars are arranged in the working solution groove in parallel, and the distance between the two ceramic bars can be adjusted. Each conveying rod mechanism comprises a guiding rod and a wire guiding wheel. The wire take-up mechanism comprises a wire take-up support, a wire take-up motor, a driving wheel and a driven wheel. It can be ensured that the tension of a wire electrode in the electric spark grinding machining process is constant.

Description

technical field [0001] The invention relates to the technical field of micro-special processing, in particular to a wire electrode constant tension control electric spark grinding processing device. Background technique [0002] Micro-tool electrodes used in micro-EDM, micro-electrochemical machining, and micro-ultrasonic machining are currently prepared by the following two methods: one is micro-electrolytic machining, which is characterized by good surface quality, but it is difficult to obtain higher size. Generally, only electrodes with circular cross-section can be prepared; the other is micro-EDM, in which electrodes with different cross-sectional shapes are prepared by WEDG method, and high dimensional accuracy can be obtained. [0003] Wire Electrode Grinding (WEDG) is a method of on-line production of micro-tool electrodes in micro-EDM. Various micro and special-shaped tool electrodes are produced. [0004] WEDG technology is very effective for improving the finen...

AI Technical Summary

Problems solved by technology

Although this technology has achieved relatively large research results, there are still the following problems: First, when the tool electrode size is small, the tension of the wire electrode wire and the speed of operation and its stability are relatively high, which is difficult to achieve. ; The second is that the tension of the wire electrode wire cannot be guaranteed to be constant, so that the surface quality of the tool electrode is poor

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