Manufacturing method of spiral bearing frame for electronic parking brake system, produced by lateral extrusion cold forging process

Abstract

The invention relates to a manufacturing method of a spiral bearing frame for an electronic parking brake system, produced by a lateral extrusion cold forging process. The method comprises the following steps: manufacturing a bevel gear, namely forming a hollow assembly groove and manufacturing the bevel gear with spiral wheel teeth at the periphery; manufacturing a bearing frame shaft, namely manufacturing the bearing frame shaft with a spline part formed on one side and an assembly staggered layer part corresponding to the hollow assembly groove, formed on the other side; finally, assembling, namely pressing and assembling the bearing frame shaft in the bevel gear, and enabling the assembly staggered layer part of the bearing frame shaft to be positioned in the hollow assembly groove of the bevel gear. According to the method, the spiral bearing frame with high quality in the aspects of cost performance, productivity, durability, hardness and strength can be produced by the cold forging process.

Description

technical field [0001] The invention relates to a method for manufacturing a spiral bearing frame for an electronic parking brake system by cold forging in a side extrusion mode. Background technique [0002] Publication patent 10-2012-0065205: Helical gears and helical gear processing methods, discloses a helical gear processing method, in the helical gear processing method, it is characterized in that the metal rod is cut into a predetermined length (S100), through The first and second preparatory processes (S200) (S300), process the helical gear (W3) into the state before forming, and chamfer the upper and lower end face angles of the helical gear (W2) in the first preparatory process (S200). round handle. [0003] Generally speaking, when designing the extrusion forging process, according to the cold forging forming ratio, the front and rear extrusion ratios are designed within a predetermined range, so as to prevent die damage and improve quality. However, in automoti...

AI Technical Summary

Problems solved by technology

[0004] In addition, conventional helical gears generally use a cutting process, so the manufacturing cost is expensive, the productivity is not good, and the durability is not as good as forged products.

For this reason, conventional cutting-based production methods have been used for components with large width differences and helical gears, which has many disadvantages in terms of productivity, durability, and production costs.

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