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Hydraulic transmission mechanism and servo numerical control hydraulic fast punching machine with hydraulic transmission mechanism

A hydraulic transmission and fast technology, applied in the field of stamping, can solve the problems of low forming quality of transmission precision products, low stability of movement and large transmission clearance.

Active Publication Date: 2018-09-14
东莞市得力仕机械科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the motor-driven method requires the use of flywheels, deceleration devices and other mechanisms, which will complicate the structure of the punching machine. In addition, this transmission method has the problems of relatively large transmission gap and relatively low motion stability. The transmission accuracy and product molding quality are low

Method used

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Embodiment Construction

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0020] It should be noted that if the embodiment of the present invention involves directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, vertical, counterclockwise, clockwise, circumferential direction, radial direction, axial direction...), the directional indication is only used to explain the relative positional relationship, movement conditions, etc. When a change occurs, the directional indication changes accordingly.

[00...

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Abstract

The invention discloses a hydraulic transmission mechanism and a servo numerical control hydraulic fast punching machine with the hydraulic transmission mechanism. The hydraulic transmission mechanismcomprises a base, a hydraulic cylinder and a toggle mechanism. During a punch forming process, an oil pump inputs hydraulic oil into a fast cavity to drive a piston rod to quickly stretch out from acompletely mold opening position to a displacement range when an upper die arranged on a sliding table stretches a to-be-punched panel of a lower die; then the oil pump inputs hydraulic oil into a pressurizing cavity, so that the output thrust of the piston rod is quickly increased, and the piston rod slowly stretches out from a stage that the upper die stretches the to-be-punched panel of the lower die to a stage that the to-be-punched panel is completely stretched; and when the piston rod is about to completely stretch out, a valve element moves along with the piston rod to abut against a bottom wall of the inner side of a cylinder body, the valve element overcomes the elastic force of a top spring under the resistance action of an inner side bottom wall of the cylinder body so as to move upwards and open a pressure relief hole, so that hydraulic oil in the pressurizing cavity flows into a pressure relieving cavity, the thrust on the piston rod is quickly and automatically reduced, the pressure relieving time of electric and hydraulic systems is saved, and the punching efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of punching, in particular to a hydraulic transmission mechanism and a servo numerical control hydraulic fast punching machine provided with it. Background technique [0002] The hydraulic cylinder is the actuator in the hydraulic transmission system, and it is an energy conversion device that converts hydraulic energy into mechanical energy. It has the characteristics of simple structure and reliable operation. When it is used to realize linear reciprocating motion, the deceleration device can be eliminated, and there is no transmission gap, the movement is stable, and the transmission accuracy is high. Therefore, it is widely used in various mechanical hydraulic systems. [0003] However, the existing hydraulic cylinders are affected by the slow switching of the output speed value and thrust value, and the scope of use is limited. For example, for a stamping machine, it is required to be able to drive the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/14B21D22/02B30B1/32
CPCF15B15/1423F15B15/1457B21D22/02B30B1/32
Inventor 陈启文唐文英
Owner 东莞市得力仕机械科技有限公司
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