A stretching hydraulic machine

Abstract

The invention discloses a drawing oil press, comprising a workbench, a mold closing part and a drawing part, characterized in that the mold closing part is arranged at the upper part of the workbench and comprises a guide post, a beam, a mold closing cylinder, a crank mechanism and an upper mold plate; the lower section of the guide post is arranged on the workbench; the beam is arranged on the upper section of the guide post; the mold closing cylinder is arranged at the upper part of the beam; the crank mechanism is arranged at the lower part of the beam; the upper end of the crank mechanism is connected with the mold closing cylinder, the lower end of the crank mechanism is connected with the upper mold plate, so the mold closing cylinder drives the upper mold plate through the crank mechanism to descend and realize mold closing; and the drawing part corresponds to the mold closing part and comprises a master cylinder which ascends to realize drawing. The drawing oil press disclosed by the invention has a high degree of automation and excellent properties, and can realize high efficiency, high speed and stable quality in drawing molding.

Description

technical field [0001] The invention relates to hydraulic stretching technology, in particular to a stretching hydraulic machine. Background technique [0002] The stretching of existing metal parts is all made by punch press or hydraulic press. Using a mechanical punch to stretch metal parts is a relatively traditional process. It is good for the stretching of thin sheet metal products. Once the metal parts are stretched with relatively thick or high strength, it will lead to high defective products. The product is easy to break, the quality is difficult to control, and the precision cannot be controlled. With the development and popularization of hydraulic press technology, there are also some hydraulic presses that can stretch metal parts. However, although the quality of the products made by the current hydraulic press has been improved, the efficiency is low, the movement is slow, and the stretching master cylinder has to overcome the force of the blank holder cylinde...

AI Technical Summary

Problems solved by technology

However, although the quality of the products made by the current hydraulic press has been improved, the efficiency is low, the movement is slow, and the stretching master cylinder has to overcome the force of the blank holder cylinder to work, wasting useless work

Specifically, the current hydraulic press simply replaces mechanical stretching with hydraulic stretching, and cannot make full use of the advantages of hydraulic technology; The pressure cylinder is located at the upper part of the hydraulic press, driving the upper mold to press down, while the lower mold is fixedly set at the lower position of the hydraulic press (on the workbench), so that the stroke of the stretching hydraulic cylinder (process, return) The distance is long, the movement is slow, and the accuracy is not easy to control

Therefore, there are many unreasonable places in the traditional stretching hydraulic press, which need to be improved and perfected.

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