Thin-walled workpiece machining method

Abstract

The invention discloses a thin-walled workpiece machining method, and relates to the field of machining. The thin-walled workpiece machining method includes the following steps that a forge piece is prepared, and a clamping process end is reserved on the forge piece; rough turning on the forge piece is carried out; semi-finish turning is carried out on the outer circle of the workpiece; carburizing treatment is carried out; a carbon layer is turned; quenching is carried out; semi-finish turning is carried out on an inner hole, the process end of the workpiece is clamped, the end face and the inner hole are turned, the allowance being 0.5 mm is reserved, and a ring slot is machined until the required size is obtained; cutting is carried out, wherein wire-electrode cutting is carried out, the turned end face serves as a standard face, and the allowance of the end face is 0.5 mm; finish turning is carried out, wherein the workpiece is turned round, the end face of the turned workpiece is attracted through a lathe sucker, alignment with a meter is carried out to enable the allowance of the outer circle to range from 0.05 mm to 0.10 mm, and finish turning is carried out on the end face, the inner hole and the outer circle through a ceramic tip or a cubic boron nitride blade until required sizes are obtained; burrs are removed; and washing and packaging are carried out. The machining process is simple, the production efficiency and the product machining accuracy can be effectively improved, and the production cost is reduced.

Description

Technical field [0001] The invention relates to the field of mechanical processing, in particular to a method for processing thin-walled parts. Background technique [0002] A slip ring collar for processing wind power gearboxes. The material is 18CrNiMo7-6. The blank is forging. The part is provided with an inner hole, which is a thin-walled part. There are also two inner ring grooves. The wall thickness of the ring groove is only 2.5mm. Difficulties in processing such parts: ①Thin-walled parts are difficult to process and require high machining accuracy; ②The inner hole has two ring grooves, and the depth is half of the wall thickness. The cutting force of the ring groove in the car is very large, which is undoubtedly for thin-walled parts. Machining to ensure accuracy increases the difficulty; ③The outer circle of the parts requires carburizing and quenching, and there is a hardness requirement. There are two general ring parts processing schemes: one is to produce multiple ...

AI Technical Summary

Problems solved by technology

Thin-walled parts are easily deformed by heat treatment, and the outer circle of the quenching process is small, which requires control of heat treatment deformation, but these two processing methods lead to variability of the workpiece, and the product qualification rate is low and the production cost is high.