Processing method of enlarging cold-rolling of inside and outside spherical surface ferrule piece as well as device thereof

Abstract

A method and device for cold rolling and expanding processing of inner and outer spherical metal rings, relating to the technical field of bearing parts processing; what is to be solved is the technical problem of processing inner and outer spherical metal rings of bearing parts; the inner and outer spherical The method for processing metal rings includes the following steps: 1) steel reforming, wherein metal bars are transformed into rings; 2) material is softened, and the rings are subjected to heat treatment to obtain lower hardness so as to facilitate cold rolling; 3) cold rolling blanks Preparation, the ring is processed into a certain precision cold rolling blank by cutting; 4) cold rolling forming, the cold rolling process is performed, the outer circular concave groove of the rolling wheel and the outer cylindrical convex shape of the mandrel in the mold part The grooved shaft enables the workpiece to be formed, and the thrust surfaces of the supporting roller and the support wheel are used to stabilize the workpiece position and limit the axial movement of the workpiece. The invention has the characteristics of improving the mechanical properties of the ring parts, high production efficiency, good shape consistency of workpieces, high processing precision and high material utilization rate.

Description

technical field [0001] The invention relates to the processing technology of bearing parts, in particular to a method of processing inner and outer spherical metal rings by cold rolling method and the technology of corresponding devices. Background technique [0002] Inner and outer spherical metal rings are widely used in the field of bearings. Typical workpieces are: outer rings of bearings with housings, outer rings of self-aligning bearings, joints of joint bearings, universal ball cages, etc. Common materials used are bearing steel, stainless steel and low carbon alloy steel. In addition to requiring high manufacturing precision, this type of parts also has high requirements for their intrinsic quality because most of their workplaces are used in the fields of automobiles, agricultural machinery and machinery. [0003] At present, the typical processing technology of this type of parts is: the steel is forged or perforated and extubated to form a metal ring with a cert...

AI Technical Summary

Problems solved by technology

[0004] 1) The processing efficiency of the spherical surface is low. Since the inner spherical surface or the outer spherical surface is usually processed by profiling lathes, CNC lathes or special spherical lathes, the tool cuts the workpiece along a certain trajectory during processing, and is limited by the shape of the blank, requiring multiple passes to complete The processing of one working surface, so the production efficiency is low;

[0005] 2) Waste of material, limited by forging and pipe making conditions, the workpiece blank is machined according to the maximum diameter of the inner and outer diameters of the finished workpiece, and a large amount of material is wasted due to the influence of the spherical radian;

Images