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Super-slow hydraulic system for synchro-driven die-forging hydraulic press

A synchronous drive and hydraulic system technology, applied in the field of die forging hydraulic presses, can solve the problems of flow fluctuation of the driving cylinder, destroying the flow rule of the workpiece grains, affecting the quality of the workpiece forming, etc., and achieve the effect of stable flow output.

Active Publication Date: 2013-06-26
CENT SOUTH UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

[0002] Most of the existing die forging hydraulic machines cannot achieve drive synchronization, and when driving at an ultra-slow speed (0.001m / s), the flow rate of the drive cylinder is easily disturbed by the unbalanced load and fluctuates, resulting in the running speed of the moving beam under this working condition Unstable, thus destroying the grain flow law inside the workpiece and affecting the molding quality of the workpiece

Method used

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  • Super-slow hydraulic system for synchro-driven die-forging hydraulic press

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Embodiment Construction

[0010] The present invention will be further described below in conjunction with the accompanying drawings.

[0011] see figure 1 and figure 2 , consisting of 5 drive cylinder synchronous drive channels, 1 drive cylinder ultra-slow drive channel, 1 drive cylinder pressure relief channel, 1 return cylinder drain channel and 1 return cylinder liquid inlet channel, 5 drive cylinders synchronously The drive channels are independent of each other, and the flow and pressure of each channel are guaranteed by a separate oil source to realize the driving synchronization of the moving beam during fast forward and slow forward; one drive cylinder super slow drive channel realizes the constant flow of the drive cylinder during the working stage Ultra-slow speed drive; 1 drive cylinder pressure relief channel realizes the rapid unloading of 5 drive cylinders after the hydraulic press is loaded; 1 return cylinder drain channel can control the brake beam in the fast forward, slow forward, ...

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Abstract

The invention discloses a super-slow hydraulic system for a synchro-driven die-forging hydraulic press, mainly consisting of five synchro-driven channels of a driving cylinder, a super-slow driving channel of the driving cylinder, a releasing channel of the driving cylinder, a liquid drainage channel of a return cylinder and a liquid inlet channel of the return cylinder. In the invention, an independent oil source is arranged for each driving channel of the driving cylinder to realize self-adaptive compensation of load pressure of the driving cylinder and flows of different channels are changed according to the openness of a proportional flow control valve for adjusting the position and signal of a plunger of the driving cylinder. The descending speed of a moveable beam is adjusted by controlling start and stop of a fast descending valve set and a slow t descending valve set to realize real time synchronous movement control of the driving cylinder. During super-low driving, the constant front and back pressure difference of a proportional flow valve is ensured by arranging a pressure maintaining valve to output stable flow under super-low working condition. Pressure impact of the oil source is eliminated by arranging an accumulator. The working position of a change valve is changed to realize rapid load removal for the driving cylinder and rapid return of the moving beam.

Description

technical field [0001] The invention relates to a die forging hydraulic press, in particular to an ultra-slow hydraulic system for a synchronously driven die forging hydraulic press. Background technique [0002] Most of the existing die forging hydraulic machines cannot achieve drive synchronization, and when driving at an ultra-slow speed (0.001m / s), the flow rate of the drive cylinder is easily disturbed by the unbalanced load and fluctuates, resulting in the running speed of the moving beam under this working condition Unstable, thus destroying the grain flow law inside the workpiece and affecting the molding quality of the workpiece. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an ultra-slow speed hydraulic system for a synchronously driven die forging hydraulic press capable of realizing the driving synchronous and super slow speed driving functions of a multi-cylinder driven die forging hydraulic press....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J9/12
Inventor 陈敏李毅波黄明辉湛利华陆新江
Owner CENT SOUTH UNIV
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