Large-scale ring rolling machine proportion servo-control system

Abstract

The invention discloses a large-scale ring rolling machine proportion servo-control system which belongs to the technical field of high-precision electrohydraulic servo control. The large-scale ring rolling machine proportion servo-control system comprises a five-axle control system which is formed by a radial rolling control system, an axial rolling control system, a follow-up stand control system, a centering roller rolling control system and a conical roller rotate speed control system; through the theoretical position setting and the actual position detection of radial rolling, axial rolling, a follow-up stand, a centering roller, and the like, a five-axle closed-loop position control system is formed by taking the theoretical sizes of an outer circle, an inner circle and the height of a ring member and the linear velocity of the outer circle of the loop member as target values and the detection values of the core roller position, the conical roller position, the follow-up stand position, the centering roller position and the conical roller rotate speed as feedback, therefore, five axles after being controlled can be debugged in a relatively independent way, thereby the safety and reliability of the system is increased, the rolling working of the control systems is stable, and the control precision is high.

Description

(1) Technical field [0001] The invention relates to a proportional servo control system of a large ring rolling machine, which belongs to the technical field of high-precision electro-hydraulic servo control. (2) Background technology [0002] Ring rolling machine is the mainstream blank processing equipment for large ring parts, mainly used for rolling bearing rings, ring gears, flanges, hubs, thin-walled barrels and other forgings, and can roll carbon steel, stainless steel, titanium alloy, aluminum alloy and Ring parts made of superalloy and other materials; it is currently used in the fields of machinery industry, petrochemical industry, textile industry, construction machinery and aerospace industry. [0003] The control system commonly used in the electro-hydraulic control system used in domestic ring rolling machines is the control mode of rolling speed and rolling pressure, mainly based on open-loop control, and the rolling method, rolling stability and rolling preci...

AI Technical Summary

Problems solved by technology

[0003] The control system commonly used in the electro-hydraulic control system used in domestic ring rolling machines is the control mode of rolling speed and rolling pressure, mainly based on open-loop control, and the rolling method, rolling stability and rolling precision mainly depend on Due to the experience of the operator, especially the system debugging can not realize the no-load simulated test run, the trial production process is very easy to cause waste products; in the ring rolling process, the adjustment of the pressure and speed is slightly not in place, which directly leads to the ellipse and abnormal shape of the ring. In short, this control method leads to the dependence of operating experience in the ring rolling process, resulting in poor controllability of the system, and it is difficult to realize CNC automatic production

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