Cold-bending forming process for open type elastic limiting clamping ring

Abstract

The invention provides a cold-bending forming process for an open type elastic limiting clamping ring. The straight-line segments of the two ends are prebent before bending forming in the perpendicular fiber direction of a plate, and thus the radians of the ends reach the diameter size of the elastic limiting clamping ring in advance. Circular arcs at the closed opening positions of the two ends of the open type elastic limiting clamping ring are subjected to punch forming in advance, then the whole plate is bent, thus the problem of the straight-line segments left at closed openings can be solved, smooth transition of the inner diameter surface of the open type elastic limiting clamping ring is ensured, finally the elastic limiting clamping ring meets the design requirements, and the problem of difficult forming of the open type elastic limiting clamping ring is solved completely.

Description

technical field [0001] The invention relates to the metal machining field of cold-bending forming, in particular to a cold-bending forming process of an open-type elastic limit snap ring. Background technique [0002] See figure 1 According to the performance requirements of the product, the force direction of the elastic limit snap ring should be perpendicular to the fiber direction of the raw material. figure 2 . However, the processing of pipes or rods cannot meet the mechanical performance. Therefore, the design requires the use of plates and bending perpendicular to the fiber direction. However, due to the large bending force required at the ends of the clasp ring during bending, this part cannot be bent in place at one time during cold working, and a straight line portion will always be retained at the end, with a "U" shape in cross section. For details, see image 3 , the product cannot be directly harvested into a barrel shape, so it is necessary to design an en...

AI Technical Summary

Problems solved by technology

However, due to the large bending force required at the ends of the snap ring during bending, this part cannot be bent in place at one time during cold working, and a straight line portion will always be retained at the end, with a "U"-shaped cross section. For details, see image 3 , the product cannot be directly harvested into a barrel shape, so it is necessary to design an end preforming process, through which the part can meet the drawing requirements

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