Electrohydraulically-controlled pressing machine reversing through mechanical signal

An electro-hydraulic control and mechanical signal technology, applied in the direction of presses, manufacturing tools, etc., can solve problems such as unstable return speed, slow response to pressure changes, and less sensitive return response, and achieve low scrap rate and good rigidity.

Active Publication Date: 2017-05-31
宣城托新精密科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 1. The return stroke control of the stamping rod is complicated, and the return stroke response is not more sensitive
[0008] 2. When the stamping rod returns, the return speed is unstab

Method used

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  • Electrohydraulically-controlled pressing machine reversing through mechanical signal

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Embodiment Construction

[0031] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Before introducing the electro-hydraulic control pressure machine for mechanical signal commutation of the present invention, first introduce the process of stamping deformation of the workpiece 36 to be stamped, and several strokes of the stamping rod 30 (or indenter) of the stamping workpiece 36 throughout the stamping process. Paragraph so as to be able to understand the technical solution and friendship effect of the present invention.

[0033] Traditionally, it is believed that the workpiece 36 needs to be subjected to sufficient and constant pressure to be formed. However, in the actual deformation of the workpiece 36, the required pressure varies with different stages of deformation. The workpiece 36 undergoes two kinds of...

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PUM

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Abstract

The invention discloses an electrohydraulically-controlled pressing machine reversing through a mechanical signal. The electrohydraulically-controlled pressing machine comprises an execution mechanism and a hydraulic control mechanism, wherein the execution mechanism comprises an execution cylinder body, an execution piston and a stamping rod; the hydraulic control mechanism comprises a first oil inlet pipeline and a second oil inlet pipeline, a pressure reducing valve, a three-position five-way reversing valve, a pressurization mechanism, a linkage mechanism and a hydraulic buffering control mechanism. A pressure continuously rises when the stamping rod enters the third stroke section to enable a workpiece to generate elasticoplastic deformation due to the cooperation of the pressurization mechanism and the hydraulic buffering control mechanism of the hydraulic control mechanism, so that the requirement of the workpiece on the gradual increasing of the pressure during the elasticoplastic deformation are met; and the hydraulic control mechanism in the invention enables the stamping rod to meet the change of the pressure in three stroke sections, so that the stamped workpieces are high in rigidity and low in rejection rate. The three-position five-way reversing valve and the stamping rod realize linkage through the linkage mechanism.

Description

Technical field [0001] The invention relates to the field of electromechanics, in particular to an electro-hydraulic controlled pressure machine with mechanical signal commutation. Background technique [0002] In the prior art, two forms of power are usually used to stamp a workpiece. One is to use mechanical transmission as power, that is, mechanical power; the other is to use hydraulic transmission as power, that is, hydraulic power. Generally, when the deformation of the workpiece is reduced, and the elastic-plastic modulus of the workpiece is small, and the pressure required for the deformation of the workpiece is small, mechanical power is more appropriate, because the mechanical power makes the punching action of the punching rod faster. When the deformation of the workpiece is large, and the elastic-plastic modulus of the workpiece is large, and the pressure required for the deformation of the workpiece is large, hydraulic power is more appropriate, because hydraulic powe...

Claims

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Application Information

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IPC IPC(8): B30B15/16B30B15/22B21D22/02
CPCB21D22/02B30B15/16B30B15/22
Inventor 蒋玉丽
Owner 宣城托新精密科技有限公司
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