Forming method and device for male coupling part of universal joint

Abstract

The invention discloses a forming method and a device for a male connector of a universal joint. The forming method comprises the following steps: (A) preparing a columnar blank with a set length; (B) placing the columnar blank into a pre-forging die to make the columnar blank formed into a pre-forged piece; (C) placing the pre-forged piece into a convex block forming die to form a convex block part at one end of the pre-forged piece, the outer diameter of the convex block part being less than that of the other end of the pre-forged piece; and (D) placing the pre-forged piece into a convex lug forming die to make the pre-forged piece form a seat body part connected with the convex block part, and two convex lug parts formed at one end, away from the convex block part, of the seat body part in a spacing manner, the seat body part being cooperated with the convex lug parts to define a movable slot. The male connector can be formed according to the steps, and a cutting procedure is not needed, so that the use rate of materials can be increased.

Description

technical field [0001] The invention relates to a forming method and a forming device, in particular to a forming method and a device for a male joint of a universal joint. Background technique [0002] When using hand tools, they are often limited by the excessively narrow and too much turning space and cannot extend the hand tools into the operation. Generally, users will overcome this problem by installing a universal joint. refer to figure 1 A general universal joint 1 includes a male coupling part 11 , a connecting part 12 pivotally connected to the male coupling part 11 at one end, and a female coupling part 13 pivotally connected to the other end of the connecting part 12 . One end of the male coupling part 11 and the female coupling part 13 that is not connected to the connecting part 12 can be respectively combined with hand tools and accessories (not shown), and the rotation axes of the male coupling part 11 and the female coupling part 13 are perpendicular to eac...

AI Technical Summary

Problems solved by technology

The male joint 11 is generally made by cutting, but cutting is a processing method of material removal, so the material utilization rate is low and will lead to cost increase and waste of resources, and the blank will also be cut during the cutting process. Because the continuity is destroyed, the strength of the finished product is reduced. In addition, cutting is a processing method for reciprocating material removal on the blank. When the shape to be formed is more complicated, multiple passes are required to process the different directions of the blank. Reciprocating cutting is time-consuming and labor-intensive

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