Concentric-square-shaped groove frame machining method and series connection insert joint bending die

Abstract

The invention provides a concentric-square-shaped groove frame machining method and a series connection insert joint bending die, and belongs to the technical field of mechanical stamping. Welding defects are reduced, leveling labor hours caused by heat deformation are shortened, and the labor intensity is reduced; and the problem about production narrow openings of Z-shaped bending is solved. The die is composed of three parts including a male die assembly, a female die assembly and a positioning device; insert series connection combining and jointing male and female die inserts are adopted in the male die assembly and the female die assembly correspondingly; the male die assembly comprises seven male die inserts of the same structure and with different lengths; and the concentric-square-shaped groove frame machining method comprises three times of bending. An insert joint tool bending process technology is used for reducing the split welding length, and a common angle supplementing process method is used for manufacturing. Bending of multiple products is completed through the insert joint bending die, the die manufacturing cost is reduced, die replacement can be rapidly carried out, and the product batch consistency is improved.

Description

technical field [0001] The invention belongs to the technical field of mechanical stamping, and relates to metal plate bending and bending dies. Background technique [0002] (1) Background technical solution: [0003] The shape of the product is a panel with rivet holes and a back-shaped groove frame in the middle. The "Z" shape of the groove and the board body requires high precision. The groove is narrow and the outer edge is high. This part is applicable to the basic principle of bending. Bending can be performed on a press using a mold, or it can be used on a bending machine, (such as figure 1 , figure 2 shown). [0004] In the past, the return-shaped groove frame and the "Z"-shaped bend could not be completed with the existing bending dies, and they had been divided into three-body bending and single-piece tailor welding. (Such as image 3 , Figure 4 As shown), part 1 is a panel with rivet holes, part 2 and part 3 have the same structure but different lengths, ...

AI Technical Summary

Problems solved by technology

If one set of molds is made for each size, the cost of mold manufacturing will be greatly increased

The existing general-purpose bending dies cannot meet the product needs at all, and the characteristics of the production mode of small batches and multiple varieties

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