Cold finishing die for car universal joint besides-star wheel

Abstract

The invention discloses a cold finishing die for a car universal joint besides-star wheel. A terrace die includes an upper template, a fixing component, a stand column and a punch. The stand column isfixed on the upper template through the fixing component, the stand column is in a conical shape, the top of the stand column is in the conical contraction form, and the wall of the stand column is uniformly provided with six assembly grooves. The punch is composed of six die valves with convex bodies, the overall appearance structure of the punch composed of the die valves is a cylindrical structure with a central hole, the wall of the cylinder is uniformly provided with six convex bodies, every two adjacent convex bodies are arranged in an axially symmetrical mode, the convex bodies are matched with outward oblique ball grooves, a cavity of the center hole is matched with the conical contraction surface of the stand column, and the die valves are provided with convex ribs matched with the assembly grooves in the stand column; the punch is fixed on the stand column through a punch fixing component. The cold finishing die adopts a warm-cold combined forging method instead of cutting work, the production efficiency is high, the cost is low, the cycle is short, metal flow lines are cut off, high strength and shock resistance are achieved, raw materials are saved, and production requirements of automobile parts can be met.

Description

technical field [0001] The invention relates to an automobile universal joint, in particular to a production mold of an outer star wheel. Background technique [0002] In the automobile transmission system and other systems, in order to realize the power transmission between two rotating shafts whose axes do not coincide, a universal joint transmission must be used. The universal joint transmission generally consists of a universal joint and a transmission shaft, and sometimes includes an intermediate support. The universal joint is the "joint" part of the universal joint transmission in the automobile transmission system, which allows the connection between the connected parts The included angle varies within a certain range, and a certain range of relative telescopic movement is allowed between the connected parts. The State Intellectual Property Office discloses a retractable ball cage constant velocity universal joint (CN201410129701.5), which includes an outer star whe...

AI Technical Summary

Problems solved by technology

The metal flow line is cut off, the internal structure of the material is not loose and compact, the mechanical properties are poor, the production efficiency is low, the material utilization rate is low, the production cycle is long, the processing cost is high, and it is difficult to meet the quality requirements of auto parts.

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