Efficient automatic polishing processing method for molding surface of closed inner chamber, and dedicated equipment adopting method

Abstract

The invention aims to provide an efficient automatic polishing processing method for a molding surface of a closed inner chamber, and dedicated equipment adopting the method. According to the method, a part is processed by adopting a vibrating polishing machine; and the method adopts the technological processes of clamping the part, adding grinding material into a work bin, and carrying out vibrating and polishing. The method is characterized in that the molding surface of the closed inner chamber is polished and processed automatically by adopting the dedicated vibrating polishing machine; the processing process comprises a roughing step and a finishing step; rough grinding material used in the roughing step is required to have sharp edges; fine grinding material used in the finishing step is required to have round corners; during clamping, the effective vertical lifting height of the part is guaranteed to be larger than twice the thickness of the part, and the vertical deflection of the part is not smaller than 30 degrees; and the vibration frequency of the work bin is 1,000 to 1,450 per minute, the vibration and swing frequency of a machine head is 15 to 30 per minute, and the lifting speed of the part is 1.5 to 2 m per minute.

Description

technical field [0001] The invention relates to mechanical processing technology, and in particular provides a method for high-efficiency automatic polishing of the profile of a closed inner cavity, which is mainly applied to the high-efficiency automatic polishing of the profile of deep cavities of disc ring parts of aeroengines. Background technique [0002] Disc ring parts are important hot-end components of aero-engines, and they work under extremely harsh conditions. They are subjected to complex thermal and mechanical loads during flight, and the stress and temperature borne by each part are different. Sufficient mechanical properties are required, especially low cycle fatigue as high as possible, durable performance and good creep resistance in its service temperature range. In addition to the strength capability of the material used in the disc ring parts, a more important aspect of these properties is that the surface integrity of the disc ring parts has a great inf...

AI Technical Summary

Problems solved by technology

This method is mainly applied to the high-efficiency automatic polishing process of the deep cavity surface of disc ring parts, an important hot end part of aero-engine, and solves the processing problems of low efficiency and unstable quality of disc ring parts in closed cavity surface polishing

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