Grinding wheel balance vibration-absorbing device based on EAP (electroactive polymer) driving and grinding wheel balance vibration-absorbing method based on EAP driving

Abstract

The invention discloses a grinding wheel balance vibration-absorbing device based on EAP (electroactive polymer) driving and a grinding wheel balance vibration-absorbing method based on EAP driving. The grinding wheel balance vibration-absorbing device based on EAP driving comprises an outer cover and a balance unit, an adjusting screw rod, a positioning slide rod, a driving rod and a counterweight unit. The driving rod controls and adjusts the screw rod to rotate through gear-rack engagement and then adjusts the position of the counterweight unit to achieve linear balance of a grinding wheel,and a first elastic support, a second elastic support, an elastic element, a main mass unit and a damping element are arranged in the counterweight unit to form dynamic vibration absorber effect withdamping. The grinding wheel balance vibration-absorbing device based on EAP driving has the advantages that vibration-absorbing balancing can be achieved timely and properly to avoid the defect thata traditional exterior balance head is untimely in treatment; a signal acquisition process is more precise to reduce exterior vibration interference; movable balance of a rotor is combined with dynamic vibration absorption on the basis of EAP driving, and metal rubber serves as the damping element, so that vibration is reduced and even eliminated, the grinding wheel is more stable to operate, andthe position and parameters of a counterweight are improved to subdue vibration conveniently.

Description

technical field [0001] The invention relates to the technical field of grinding processing, in particular to an EAP-driven grinding wheel balance vibration-absorbing device. Background technique [0002] In the roll grinding process, grinding chatter is a very harmful phenomenon in roll processing, which directly hinders the improvement of processing quality and production efficiency. The grinding process is always an unstable process, and the grinding chatter always exists, and gradually increases with the prolongation of the grinding time. At the beginning of the grinding process, even if there is no vibration caused by other factors, the alternating force due to the uneven hardness and uneven wear of the grinding wheel itself will also cause the regenerative effect of the grinding wheel to cause grinding chatter. According to the research, due to the large mass and volume of the roll, the impact on chatter is not obvious, and the chatter of the grinding wheel plays a lea...

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Problems solved by technology

[0004] For the grinding wheel balancing device in the prior art, there are generally the following deficiencies: 1. The installation position is fixed and cannot follow the rotation of the rotor. After vibration occurs at a certain position at a certain moment, it needs to be transmitted to the balancing head for processing. Due to the fast speed of the rotor, the position of the vibration force may shift, and then evolve into an overall vibration. The balance head can only balance the main aspects of the overall vibration; 2. An external signal sensor is required, due to the installation position The distance from the position where the rotor vibrates is far away, and there are many vibration sources in the entire rotor mechanical system, so the accuracy of the vibration signal cannot be guaranteed; 3. The electric control actuators use more motors, which are also rotor systems themselves, and will also generate vibration frequencies. It will not only interfere with the acquisition of the signal sensor, but also increase the complexity of the adjustment system; 4. The online real-time dynamic balance operation is realized by adjusting the center of gravity, the purpose is to reduce the vibration caused by the imbalance of the rotor during operation, but we finally The purpose is to reduce or even eliminate vibration, so that the rotor runs more smoothly, not to reduce the vibration increment, so that the rotor can vibrate more smoothly; 5. The position of the counterweight is unreasonable, and the parameters such as the position and size of the counterweight do not have a complete set of basic theories. support

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