Die for performing loop forming on metal bar material and using method thereof

Abstract

The invention discloses a die for performing loop forming on a metal bar material and a using method thereof. The die comprises an upper die plate, a lower die plate, a pressure plate, a pin shaft frame, a left pressure arm, a right pressure arm, a supporting plate, a limiting plate, a rotating shaft, a pressure shaft, a shaft support and a positioning block. The pressure shaft is arranged in a shaft hole at the front end of the pin shaft frame; the rear end of the pin shaft frame is arranged in a taper hole of the pressure plate; and the pressure plate is connected with the upper die plate. The supporting plate is fixedly connected with the lower die plate; the shaft support is fixedly connected with the lower die plate; the limiting plate is fixedly connected with the supporting plate; the positioning block is fixedly connected with the left pressure arm; and the left pressure arm and the right pressure arm are assembled together with the shaft support and the supporting plate through the rotating shaft. During the loop forming, the left pressure arm and the right pressure arm rotate around the rotating shaft and are folded gradually, and the metal bar material is gradually formed into a circular ring in a die cavity formed by the left pressure arm and the right pressure arm. The die has a simple structure, a low manufacturing cost, is simple and convenient to operate, improves the appearance quality of a product, realizes the standardized manufacturing of the product, and greatly improves the production efficiency.

Description

technical field [0001] The invention belongs to the technical field of material forming in mechanical plastic processing, and relates to a mold for ring-forming a metal bar and a method for using the same. Background technique [0002] In the field of industrial machining, it is often necessary to process some metal parts with ring-shaped ends. Parts of this shape are widely used in products in various industrial fields, such as door hooks used on railway freight wagons , Hooks used on mechanical engineering vehicles, etc. [0003] At present, domestic enterprises generally adopt the processing method when enclosing such parts, which is to firstly heat the metal bar and then encircle it by hand. This method is greatly affected by human factors, and the product accuracy often cannot reach Process design requirements, poor forming, poor appearance, product consistency does not meet the requirements, and low productivity. However, some large-scale foreign enterprises use larg...

AI Technical Summary

Problems solved by technology

[0003] At present, domestic enterprises generally adopt the processing method when enclosing such parts, which is to firstly heat the metal bar and then encircle it by hand. This method is greatly affected by human factors, and the product accuracy often cannot reach Process design requirements, poor forming, poor appearance, product consistency does not meet the requirements, and low productivity

However, some large-scale foreign enterprises use large-scale CNC forging equipment for processing, but the price of this equipment is very expensive. For non-ultra-large-scale production, the cost is too high, and it is difficult for domestic enterprises and parts buyers to accept.

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