Three-boss flexible expanding die of vibration damper liquid-storage cylinder and expanding process

Abstract

The invention discloses a three protruding platform bulge mould for processing the liquid tube of shock-reducer. The bulge mould includes a bulge die and a upper press die. The shape of bulge model cavity is matching with the shape of the three-projection-platform on the liquid storage tube. The characteristic is that there is bugle soft die in the bulge shape cavity and the bugle soft die is under the upper pressing die and it is made up of flexible material. The process of bulging shape is: put preparative workpiece straight into bulge die cavity, and put the soft die into the workpiece and then tighten the bulge die; The upper press soft die extrudes the workpiece to make workpiece full of bugle die and the workpoece is deformed along shape of bulge die. The invention has the characteristic of reasonable design, reduced production cost, advanced eligibility of product, simple process of machining, short machining cycle.

Description

technical field [0001] The invention relates to a mold and a processing technology using the mold, in particular to a three-boss soft bulging mold and a bulging process for processing a shock absorber liquid storage cylinder, which is used for processing a shock absorber liquid storage cylinder The three expansion bosses on the barrel. Background technique [0002] In the entire production process of the liquid storage cylinder, the process of expanding the three bosses is the most difficult, and this process is used abroad such as figure 1 The rigid mold shown is processed, which belongs to the hard mold processing technology. The outer layer of the rigid mold is a bulging mold 1', an elastic bulging rigid mold 5 is installed in the middle, and the cavity and bulging mold 1' The outer wall of the forming rigid die 5 is processed according to the size of the boss required by the workpiece 3'; when the upper die 2' is forced to move downward, its tapered part stretches the e...

AI Technical Summary

Problems solved by technology

Because this kind of mold has many edges and corners on the bulging rigid mold 5, the material is easy to crack during the extrusion and stretching process, and the product scrap rate is high. Secondly, this process has higher requirements on the pipe material and needs to be tempered Processing, the appearance quality of the workpiece after processing is not easy to meet the requirements, and the processing accuracy of the equipment and molds is very high, which greatly increases the processing cost

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