Method for machining thin-wall bearing housing part

Abstract

The invention relates to the field of machining, in particular to a method for machining a thin-wall bearing housing part. The method comprises the following steps that a blank is forged, and a process construction chuck is reserved; rough turning is carried out, wherein the appearance of a workpiece is roughly turned on a common lathe, a ladder hole of the workpiece is roughly turned, stabilizing treatment is carried out, and the internal stress of the workpiece is eliminated; finish turning is carried out, finish turning is carried out on the workpiece on a numerically controlled lathe, the working allowance of 0.9 mm is reserved on the single side of the outer circle and the single side of an inner hole; rough grinding is carried out, wherein the two end faces of the workpiece are ground on a surface grinding machine, and the depth of parallelism between the two end faces is kept within 0.05 mm; rough grinding is carried out, wherein the construction chuck end face of the workpiece is sucked by a suction cup on a universal grinding machine, alignment is carried out according to the outer circle, and the outer circle, the inner hole and the end faces of the workpiece are ground roughly. The machining process is simple, the scheme is simple and practical, clamp design is reasonable, application is convenient, manufacturing cost is low, the part is easy to dismount, the use effect is good, the machining quality of the workpiece can be ensured, workpiece efficiency can be improved, and the method is suitable for batch production of the large-diameter thin-wall part.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a processing method for thin-walled bearing sleeve parts. Background technique [0002] In a gantry product, there is a typical thin-walled part—a thin-walled bearing sleeve, whose inner diameter is 165mm, outer diameter is 170mm, and wall thickness is only 2.5mm. The requirements are relatively high, the surface roughness of the outer circle and the hole is Ra0.8um, and the coaxiality error of the outer circle and the hole is required to be less than 0.02mm. Due to the thin wall, poor rigidity and weak strength of the part, it is easy to deform during processing, which increases the shape and position error of the part, makes it difficult to guarantee the processing quality of the part, and the shape and position tolerance is not easy to control, which increases the difficulty in processing. During the processing of thin-walled bearing sleeves, the workpiece is often d...

AI Technical Summary

Problems solved by technology

Due to the thin wall, poor rigidity and weak strength of the part, it is easy to deform during processing, which increases the shape and position error of the part, and it is difficult to guarantee the processing quality of the part. The shape and position tolerance is not easy to control, which increases the difficulty in processing.

During the processing of thin-walled bearing sleeves, the workpiece is often deformed due to radial force, grinding force, internal stress, etc., which cannot guarantee the processing quality of the part and affects the assembly cycle