Magnetofluid shock absorber for cutter head

Abstract

The invention discloses a magnetofluid shock absorber for a cutter head. The magnetofluid shock absorber comprises a shell with a hollow structure, wherein an upper end cover and a lower cover are fixedly installed at the upper end and the lower end of the shell respectively, grooves are formed in the upper end cover and the lower end cover, a cooling pipe which is vertically arranged and is fixedly connected with the upper end cover and the lower end cover is arranged in the center of the shell, the upper end of the cooling pipe penetrates through the upper end cover and is located in the groove of the upper end cover, the lower end of the cooling pipe penetrates through the lower end cover and is located in the groove of the lower end cover, an annular positive electromagnet is arrangedat the circumferential side of the cooling pipe located in the groove of the upper end cover, and an annular negative electromagnet is arranged at the circumferential side of the cooling pipe locatedin the groove of the lower end cover. The magnetofluid shock absorber is mainly used for controlling vibration of the machining cutter head of a lathe, and the feature that magnetofluid damping varieswith the magnitude of the magnetic field is utilized. By controlling the magnetic field of the electromagnets at the two sides of the magnetofluid, the magnitude of magnetofluid damping is changed, real-time regulation on the shock absorber is achieved, and thus real-time control over the vibration of the cutter head is achieved accordingly.

Description

technical field [0001] The invention relates to the technical field of shock absorbers, in particular to a magnetic fluid shock absorber for a cutter head. Background technique [0002] When the turning and milling machine is working, the cutter head will vibrate violently or vibrate, which is an important reason for the low machining accuracy of the product. Nowadays, the shock absorbers used to control the vibration of machine tool heads are mostly passive shock absorbers, such as rubber metal rubber shock absorbers, tuned mass damping shock absorbers, rubber vibration isolators, etc. [0003] However, the vibration of the cutter head is complicated, the vibration frequency band is wide, the control frequency range of the passive damper or tuned mass damper is narrow, and the adjustment of the traditional damper used to control the vibration of the cutter head is cumbersome and has great limitations. [0004] The damping of the magnetic fluid can be changed according to t...

AI Technical Summary

Problems solved by technology

[0006] Purpose of the invention: The purpose of the present invention is to provide a magnetic fluid damper for a cutter head to solve the problem that the existing damper has a narrow control vibration frequency range and cannot be used to control the vibration of the cutter head

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