Tubular electrode abrasive particle assisting multi-bath electrolytic cutting machining device and method

Abstract

The invention relates to a tubular electrode abrasive particle assisting multi-bath electrolytic cutting machining device and a tubular electrode abrasive particle assisting multi-bath electrolytic cutting machining method and belongs to the field of electrolytic machining. The device and the method are characterized in that the surface of a tubular electrode is additionally provided with abrasiveparticles; an anode metal which is not removed by electrolysis in time due to lack of liquid and a passivation layer formed on the surface of titanium alloy in an electrolytic machining process can be removed by a grinding force generated by the abrasive particles in high-speed rotation of the tubular electrode, so high-efficiency proceeding of electrolytic machining is promoted; in the machiningprocess, the tubular electrode rotates at a high speed; a plurality of narrow gaps are uniformly distributed on the sidewall of the tubular electrode in order to spray liquid at a high speed so thatproducts generated in an electrolytic machining region can be discharged rapidly; the bottom of the tubular electrode is provided with a radial or axial air blowing opening; the air blowing opening can keep a certain air pressure (backpressure) at an electrolyte outlet and can promote an electrolyte flow field of the machining region to be more stable, and improvement of the surface quality of a work piece in the machining region is facilitated. The machining device comprises the following components: a rotary connecting pipe, an air charging pipeline, a sidewall multi-bath tubular electrode,an industrial personal computer, an electrolytic machining machine tool, a large-power direct-current power supply and an electrolyte circulating system. The machining device provided by the inventionhas important significances for increasing the flowing speed of an electrolyte, rapidly discharging products and guaranteeing one-time electrolytic cutting of a large-thickness work piece.

Description

technical field [0001] The invention relates to a tube electrode abrasive particle assisted multi-groove electrolytic cutting processing device and method, belonging to the field of electrolytic processing. Background technique [0002] In aerospace and other fields, titanium alloys and other difficult-to-machine materials are often used for some key connecting parts. The processing of these materials requires no recast layer and microcracks on the surface after processing. In addition, some parts have complex cross-sectional shapes and large depth-to-width ratios, and the amount of material removal is also large. Therefore, how to realize high-efficiency and high-quality processing of difficult-to-machine materials has become a difficult problem in the aerospace field. [0003] The traditional cutting tool wears seriously, and the processing technology is also very complicated. Usually, residual stress will be generated on the surface of the processed workpiece to form a w...

AI Technical Summary

Problems solved by technology

[0005] When cutting parts with a large depth-width ratio, it is difficult for the electrolyte to flow in and out in the small processing gap. The greater the depth, the greater the pressure loss along the flow of the electrolyte, which makes the discharge of the electrolytic product difficult and the processing area The flow field is chaotic, which eventually leads to low processing efficiency and poor processing surface quality

In addition, when electrolytically cutting parts with a large depth-width ratio, the electrolyte flow may be turbulent. With the increase of the feed rate, some anode metals may not be electrolytically removed due to lack of liquid in some processing areas, resulting in Short circuit caused by ignition causes processing interruption

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