Self-adaptive control method for stability and roundness of ultra-large ring piece in radial and axial rolling process

Abstract

The invention provides a self-adaptive control method for stability and roundness of an ultra-large ring piece in the radial and axial rolling process. The self-adaptive control method comprises the steps of rolling ring stability control based on conical roller rotating speed fuzzy adjustment and rolling ring roundness control based on guiding force feedback. According to the method, in rolling ring stability control based on conical roller rotating speed fuzzy adjustment, arithmetic average filtering method processing is carried out on input ring center offset and offset change rate, and amplitude limiting processing is carried out on conical roller rotating speed adjusting quantity. According to the self-adaptive control method for the stability and roundness of the ultra-large ring piece in the radial and axial rolling process, the rolling stability control method based on conical roller rotating speed amplitude limiting filter fuzzy adjustment is provided by aiming at out-of-round and unstable deformation states in the rolling process of the ultra-large ring piece on the basis of conventional motion planning control of radial and axial ring rolling equipment, a rolling roundness control strategy based on guiding force feedback is formulated, the rolling roundness and stability of the ring piece are controlled by adjusting roller movement in real time, and the stability and roundness of the ultra-large ring piece in the rolling process can be considered.

Description

technical field [0001] The invention belongs to the field of ring rolling, and in particular relates to an adaptive control method for the stability and roundness of the diameter and axial rolling process of super-large rings. Background technique [0002] Super-large ring products, such as wind power bearings, tower flanges, nuclear power support rings, rocket transition rings, etc., are key main structural parts widely used in new energy and aerospace equipment. Diameter and axial rolling of rings is an advanced technology for manufacturing high-performance super-large integral ring components. [0003] The principle of radial and axial rolling of rings is as follows: figure 2 As shown, the measuring roller 8 keeps rotating and feeding on the outer surface of the fitting ring, the driving roller 2 makes the active rotating movement, the core roller 3 makes the radial feeding movement and the driven rotating movement, the upper tapered roller 6 and the lower tapered roller...

AI Technical Summary

Problems solved by technology

[0004] However, the rolling forming process of super-large rings takes a long time, the geometric dimensions of the rings vary significantly, and the moment of inertia and stiffness conditions are exponentially changed relative to the initial ring blank. These characteristics make the roundness and stability of super-large ring rolling Sexual control poses great difficulties, often leading to ring terminations and fluctuations in product quality

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