Edge folding method of special Z-shaped workpiece

Abstract

The invention discloses an edge folding method of a special Z-shaped workpiece, and belongs to the field of mold design. The method comprises the following steps that firstly, a V-shaped mold head ismade contact and a plate material is bent to 90 degrees; then the plate material is overturned, and the V-shaped mold head extrudes the plate material into a V-shaped groove to form an acute angle, and a third flat section C and a fourth flat section D are obtained; then, the plate material is overturned again, the other section of the workpiece is placed on a concave mold of the V-shaped groove,and when the plate material is bent by the V-shaped mold head to the 90 degrees, a first flat section A and a second flat section B are obtained; and then the first flat section A of the workpiece istightly attached to the lower surface of a pressing plate, the second flat section B is tightly pasted to the side face of the pressing plate, the third flat section C is pasted to the upper surface of the pressing plate, the V-shaped mold head is pressed into the V-shaped groove of the concave mold and drives a middle mold base to move downwards, the middle mold base moves downwards and extrudesa fourth flat section D, the included angle between the third flat section C and the fourth flat section D is enabled to be 0 degree, so that the formed special Z-shaped workpiece is obtained. The edge folding method of the special Z-shaped workpiece can be used for machining special Z-shaped workpieces with high efficiency and high quality.

Description

[0001] This application is a divisional application of a patent application titled: Integrated multi-station hemming mold and its hemming method and application, application number: 201611212350.X, and application date: December 25, 2016. technical field [0002] The invention belongs to the field of mold design, and more specifically relates to an integrated multi-station hemming mold and a hemming method and application thereof. Background technique [0003] Since the reform and opening up, China's economic development has achieved world-renowned achievements. Its economic strength and comprehensive national strength have been greatly developed in recent decades. The economic strength continues to rise and the economic growth rate continues to accelerate. China The economy has become the focus of attention of countries all over the world. However, in recent years, with the changes in the international environment and the sharp increase in labor costs, Chinese companies are...

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Problems solved by technology

[0007] The processing of bending dies for existing special workpieces is too targeted, and the use is relatively single. It has no other use except for bending workpieces with specific shapes. If the size of the bending parts changes, the overall size of the mold needs to be changed to meet the processing requirements. Problem, the present invention provides an integrated multi-station hemming die, which is optimized on the basis of traditional bending dies, not only can complete the bending of various angles of the traditional plate, but also can complete the bending of sheet metal parts with specific shapes Processing, especially the processing of the above-mentioned special Z-shaped workpiece, its structure is relatively simple, the bending precision is high, no secondary correction is required for one-time forming, and it can adapt to the processing of bending parts of the same shape and different sizes, and the amount of spare parts is greatly reduced

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