A method for suppressing vibration of rolling mill roll system with vibration absorber device

Abstract

The invention discloses a vibration suppression method of a rolling mill roll system with a vibration absorber device. The method comprises the steps that at first, a rolling mill system vibration model which comprises the vibration absorber device and acts together with the rolling mill rolling system is set up; according to the set-up rolling mill roll system vibration model with the vibration absorber device, a two-freedom-degree system function and an amplitude frequency equation of the system are obtained; time-domain characteristic curves and amplitude-versus-frequency curves before and after the control vibration absorber is added are obtained in a simulation manner, and the influence to the amplitude-versus-frequency curves from mass of the vibration absorber, spring force and friction force is analyzed in a simulation manner. According to the method, by means of the time-domain characteristic and the amplitude-versus-frequency characteristic, the mutual influence relation between the vibration absorber device and the rolling mill roll system is obtained, the mass of the vibration absorber device, rigidity of an elastic element and the size of friction coefficients of a damping element are adjusted properly, the effects of reducing vibration displacement of the rolling mill roll system and restraining vibration of the rolling mill roll system can be achieved, thus, the stability of the rolling mill system is improved, and a new solution method is provided for controlling the stability of the rolling mill roll system.

Description

technical field [0001] The invention relates to the field of vibration suppression of a rolling mill system, in particular to a method for suppressing vibration of a rolling mill roll system with a vibration absorber device. Background technique [0002] The strip rolling mill plays an important role in the field of heavy industrial machinery. With the rapid development of science and technology, the requirements for the strip rolling mill in the high-end field are getting higher and higher. However, the roll system of the strip mill often vibrates during the working process, which affects the quality and production efficiency of the rolled products. It is difficult to meet the requirements for the rolled products in the high-end field. In severe cases, the rolling equipment will be damaged, resulting in economic losses. To a large extent, it limits the rapid development of the rolling industry. [0003] Regarding the method of suppressing rolling mill vibration, domestic a...

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Problems solved by technology

[0004] However, the above-mentioned methods for suppressing the vibration of the rolling mill cannot further effectively suppress the vibration of the roll system of the rolling mill.

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