Vibration reduction milling cutter based on layered superposition type permanent magnet dynamic vibration absorber

Abstract

The invention discloses a vibration reduction milling cutter based on a layered superposition type permanent magnet dynamic vibration absorber. The dynamic vibration reduction milling cutter comprisesa cutter head, a cutter bar, a permanent magnet type dynamic vibration absorber and an axial thrust end cover, and the permanent magnet type dynamic vibration absorber and the axial thrust end coverare installed in a cylindrical cavity of the cutter bar; and the permanent magnet type dynamic vibration absorber is composed of a connecting rod, a rubber gasket, a metal sheet, an inner magnetic ring and an outer magnetic ring. The permanent magnet type dynamic vibration absorber in the dynamic vibration reduction milling cutter is integrally of a layered superposition type structure, it can beguaranteed that the dynamic vibration absorber provides large magnetic rigidity and eddy current damping under the condition of the small size, and therefore rubber and damping materials in a traditional dynamic vibration reduction cutter bar are replaced with the magnetic rigidity and the eddy current damping; the problems of damping liquid leakage, rubber fatigue aging and the like in a traditional dynamic vibration reduction cutter bar are solved, the rigidity and damping of the dynamic vibration absorber are independently designed, the service life of a cutter can be effectively prolonged,and the vibration reduction effect can be effectively improved.

Description

technical field [0001] The invention relates to a vibration-damping milling cutter in the field of mechanical processing, in particular to a vibration-damping milling cutter based on a layered superimposed permanent magnet dynamic vibration absorber. Background technique [0002] During the metal milling process, it is easy to cause chatter between the tool and the workpiece, resulting in a reduction in the machining accuracy and quality of the part, and affecting the service life of the tool and the machine tool. At present, the research on tool holder vibration reduction mainly includes adjustment of processing parameters, active vibration reduction technology and passive vibration reduction technology. Due to the simple structure and high reliability of passive vibration reduction technology, it has been widely used. However, the damping and stiffness of traditional dynamic shock absorbers are provided by materials such as rubber rings and damping fluid. In the actual wor...

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the present invention provides a vibration-damping milling cutter based on a layered superimposed permanent magnet dynamic vibration absorber. By arranging a multi-layer magnetic ring pair, a metal sheet and a rubber gasket superimposed structure, it overcomes the problem caused by the size of the cutter bar. Due to the limitations and insufficient magnetism of permanent magnet materials, the magnetic stiffness and eddy current damping of dynamic shock absorbers are insufficient, and the use of magnetic stiffness and eddy current damping has been realized to replace the role of rubber and damping materials in traditional dynamic vibration damping milling cutters. The stiffness and damping of the dynamic shock absorber are independently and accurately designed to effectively improve the service life of the tool and the vibration reduction effect.

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