Self-adaptive pre-control method for movable beam position of oversize water press

A technology of movable beams and hydraulic presses, which is applied to the driving device of forging presses and other directions, can solve the problems of forging dimensional accuracy control and other problems, and achieve the effect of reducing subsequent processing time, reducing energy consumption and material loss, and improving production efficiency.
CN101704060BActive Publication Date: 2011-08-03DALIAN DESIGN INST CO LTD CHINA FIRST HEAVY IND +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DALIAN DESIGN INST CO LTD CHINA FIRST HEAVY IND
Publication Date
2011-08-03

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Abstract

The invention relates to a self-adaptive pre-control method for movable beam position of oversize water press, aiming to develop a method with the function of self-adaptive pre-control of movable beam besides the function of normal position closed loop control according to the characteristics of the oversize hydraulic press for free forging in forging process such as heavy pressure, large inertiaand multiple types; a predictive control calculating model is designed based on the comprehensive consideration of the factors such as various forgings, forging pressure of water press, inertia and lag of control valve assembly to pre-control the position through simple engineering arithmetic, thereby solving the difficulty for the movable beam of the water press to control the size precision of the forging in forging process; and the method efficiently solves the problem that the variation of the forgings, large pressure, large inertia and lag of control valve assembly influence the control of the forging precision, thereby reducing the follow-up processing time, improving working efficiency and decreasing the energy and material consumptions.
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Description

technical field

[0001] The invention relates to an equipment control method for an extra-large free forging hydraulic press. Background technique

[0002] At present, the dimensional accuracy of forgings of domestic old-fashioned large-scale hydraulic presses is about ≥±10mm, and even new-style large-scale hydraulic presses with relatively high technical levels can only reach ±5mm. Improving the precision of forgings is of great significance to saving energy and raw materials. In order to improve the forging precision, it is necessary to improve the control motion precision of the moving beam. However, when the moving beam is at different positions, the gap between the two is different due to the different degrees of bending deformation of the column; the radiant heat of the forging will also cause a temperature gradient in the column, which will increase the deformation of the column. If the stroke of the brake beam is controlled according to the pure position closed-loop...

Claims

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