High-accuracy surface fine machining and finish machining method for thin-wall wheel discs

Abstract

The invention discloses a high-accuracy surface fine machining and finish machining method for thin-wall wheel discs. The rotary shaft type vibrating finish machining process is adopted for machining the surfaces of the wheel discs. The method specifically comprises the machining steps of (1), protecting the labyrinth parts of the wheel discs through black tape before machining, wherein the height of abrasive material is higher than the total height of the wheel discs and a clamp by more than 100 mm; (2), clamping the wheel discs on the clamp, installing the clamp on a pneumatic chuck of a machine tool, starting the machine tool and carrying out trial vibration; (3), carrying out vibrating finish machining on the surfaces of the sides A of the wheel discs and then carrying out forward vibration for 30 minutes and reverse vibration for 30 minutes; (4), halting the machine tool, clamping the wheel discs again, carrying out vibrating finish machining on the surfaces of the sides B of the wheel discs and then carrying out forward vibration for 30 minutes and reverse vibration for 30 minutes; (5), halting the machine tool, discharging the clamp and the wheel discs and clearing redundant material on the surfaces of the wheel discs. According to the method, high-quality and efficient surface fine machining is realized.

Description

technical field [0001] The invention belongs to the technical field of aero-engines, and relates to parts surface fine processing and finishing technology, and provides a processing method for effectively reducing the surface roughness value of parts and changing the surface stress state, which is mainly applied to various disc rings and drums of aero-engines. Surface fine processing and finishing processing of rotating parts such as cylinders. Background technique [0002] Engine disc rings, drums, journals and other parts are the core rotating parts and key parts of the engine, and they work in the harsh environment of high temperature, high pressure and high speed. Most of these parts are made of difficult-to-machine materials such as high-temperature alloys and titanium alloys, which require high dimensional accuracy, strict technical conditions, and high requirements for the surface quality and surface integrity of the parts. The processing quality directly affects the ...

AI Technical Summary

Problems solved by technology

[0003] Traditional finishing processing such as: the polishing of the surface of the wheel disc is processed by using abrasive cloth strips on an ordinary lathe and using manual polishing. Due to the poor opening of the cavity of the turbine disc, manual polishing is almost impossible, the roughness is not easy to guarantee, and the quality is not stable.

For the processing of various edges such as hole edges, lace, and groove edges, files, whetstones, and gauze strips are generally used to manually deburr and polish various edge processing methods, and the edge size consistency after processing is poor.

The traditional processing mode relies too much on the experience and skill level of the operator to complete the processing, with large human influence factors and unstable quality

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