In-plane continuous bending forming method for rolling arc parts with equal thickness

Abstract

The invention provides a continuous bending forming method for the inside of the roller pressing surface of a uniform-thickness arc part. An upper work roller with a boss-shape surface and a lower work roller with a groove-shape surface are taken as a forming tool, continuous roller pressing is conducted on plate strip blank with the trapezoid cross section, the plate strip blank is subjected to uneven compression in the width direction, therefore the plate strip blank generates extending and deformation which are distributed unevenly in the width direction, and after compression, the inside of the generating surface of the a plate strip is subjected to lateral bending; by reasonably designing the distribution of elongation, after roller compressing deformation, the plate strip blank is subjected to continuous lateral bending, and finally, the uniform-thickness arc part is formed; the radius of the arc part is controlled by geometrical parameters of the section of the plate strip blank. According to the method, the required shaping force is small, the equipment structure is simple, the cost is low, efficient and low-cost processing for arc parts can be achieved, and the utilizationrate of materials is increased.

Description

technical field [0001] The invention relates to a continuous bending forming method in the rolling surface of equal-thickness arc parts, which belongs to the field of metal plastic processing and is suitable for low-cost and rapid forming of arc parts. Background technique [0002] Equal-thickness arc parts and ring parts are used in many industrial fields. Such small-sized parts such as flange gaskets can be processed by cold blanking, but the processing of larger parts is difficult. When the plastic bending method is used to form equal-thick arc parts, the outer edge of the bent part is easy to crack and the inner edge is easy to wrinkle, and the uniformity of thickness is difficult to guarantee, especially for arc-shaped parts with smaller thickness. , the thinner the thickness, the more difficult it is to form. The traditional die forging forming method requires multiple processes, high cost, low efficiency, and low material utilization. The continuous bending forming...

AI Technical Summary

Problems solved by technology

When the plastic bending method is used to form equal-thick arc parts, the outer edge of the bent part is easy to crack and the inner edge is easy to wrinkle, and the uniformity of thickness is difficult to guarantee, especially for arc-shaped parts with smaller thickness. , the thinner the thickness, the more difficult it is to form

The traditional die forging forming method requires multiple processes, high cost, low efficiency, and low utilization rate of materials

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