Method for superfinishing of metal part with thin-wall large curved surface

Abstract

The invention discloses a method for superfinishing of a metal part with a thin-wall large curved surface. The method comprises the steps of numerical control processing, preliminary detection, primary polishing, primary detection, secondary polishing and secondary detection and the like. The part does not need to be clamped in the superfinishing process, and deformation caused by the clamping is avoided; and simultaneously due to the fact that the part is not subjected to cutter cutting, curved surface deformation caused by stress in the processing is avoided. Superfinishing is performed on the metal part with the thin-wall large curved surface through the processing steps of polishing and detection and the like, and the requirement of the surface profile within 0.015 and the requirement of surface roughness of below Ra0.2 are met.

Description

technical field [0001] The invention relates to a method for superfinishing thin-walled large curved surfaces in the field of mechanical superfinishing, in particular to a method for superfinishing thin-walled large curved surfaces of non-ferrous metals. Background technique [0002] In the production of electromechanical products, it is sometimes necessary to finely process some metal parts with thin walls and large curved surfaces. These parts generally have non-revolving surfaces. The non-revolved surface refers to all kinds of irregular surfaces except the revolved surface. Because these non-revolving surface parts cannot be processed by conventional turning methods, and the parts themselves are thin and rigid, it is difficult to clamp during processing, and vibration and deformation are likely to occur due to improper clamping during processing, resulting in poor processing quality of the parts , the accuracy requirement is difficult to guarantee. [0003] With the im...

AI Technical Summary

Problems solved by technology

When the material of the non-revolving thin-walled curved surface is aluminum or aluminum alloy, for example, for the reflective surface of the ultrashort wave antenna used in the communication field, the surface profile is required to be within 0.015, and the surface roughness needs to be controlled below Ra0.2. Due to the hardness of the raw material Low, it is easy to stick during the grinding process, so it cannot meet the design requirements through grinding, but if only the products processed by CNC machine tools are difficult to meet the requirements, the scrap rate is high, and it needs to be repeatedly put into production, which increases the production cost