Metal plastic forming device with bidirectional extrusion function

Abstract

The invention discloses a metal plastic forming device with a bidirectional extrusion function. The metal plastic forming device comprises a main cylinder piston rod in a main operating cylinder, a middle movable plate, an upper punch, a force transfer rod, an upper die core, an upper stress ring, a lower stress ring, a lower die core, a lower movable plate, a lock catch, a lock catch piston rod, a lower crossbeam, a fastening cylinder, a lower punch, an upper movable plate, a first limiting spring, a first limiting rod, a second limiting spring and a second limiting rod. According to the device, only a main operating cylinder and a main cylinder piston rod which corresponds to the main operating cylinder need to serve as power heads, and then blanks can be extruded in up and down directions, so that a machine tool is simple in structure, and the manufacturing cost is greatly reduced; due to bidirectional extrusion, the deformation coefficient of materials is lowered, the possibility of internal cracks of parts is low, and the requirements on energy supply are reduced; and moreover, the device is reliable in operation and convenient to maintain.

Description

technical field [0001] The invention relates to a metal plastic forming extrusion device, in particular to a metal plastic forming device with bidirectional extrusion function. Background technique [0002] Metal plastic forming extrusion technology is to put the pretreated metal blank into the mold according to the principle of metal plastic deformation, and then apply pressure on the blank to deform the blank metal and fill the mold cavity to obtain the required parts. [0003] At present, general metal plastic forming equipment adopts one-way extrusion with single power head or multi-directional extrusion with multiple power heads, among which one-way extrusion with single power head is the most common. However, the metal filling of single-power head unidirectional extrusion is not ideal. In order to obtain the desired shape, the deformation of the billet is usually very large, which leads to increased die loss and increased pressure on the power head. However, for multi...

AI Technical Summary

Problems solved by technology

However, the metal filling in the single-direction extrusion processing of a single power head is not ideal. In order to obtain the required shape, the deformation of the billet is usually very large, resulting in increased die loss and increased pressure exerted by the power head.

However, for multi-power heads and multi-directional extrusion devices, one more working oil cylinder will increase the cost of the machine tool for each power head, and the direction of the reaction force of the metal flow on the power head is very complicated when multiple power heads work at the same time, which will easily cause the power head to be affected. The partial load causes the hydraulic cylinder seal to wear too quickly or the power head breaks

As mentioned in Patent No. 201010513506.4, the patent adopts multi-power heads and multi-directional extrusion methods. When the main body of the machine tool is huge and multi-cylinders work together, there may be unbalanced loads on the punches. Increased wear

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