Magnetofluid shock absorber for cutter head

A magnetic fluid and shock absorber technology, applied in the direction of shock absorber, shock absorber-spring combination, shock absorber, etc., can solve the problems that cannot be used to control the vibration of the cutter head, and the vibration frequency range is narrow, so as to achieve real-time Regulatory control, fast response, and improved control efficiency

CN111173883AInactive Publication Date: 2020-05-19SOUTHEAST UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2020-05-19
Estimated Expiration
Not applicable · inactive patent

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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.
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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...

Examples

Embodiment Construction

[0019] The present invention will be further described below in conjunction with accompanying drawing and embodiment:

[0020] Such as figure 1 with figure 2 As shown, a magnetic fluid shock absorber for a cutter head of the present invention includes a housing 1 with a hollow structure. The outer profile of the housing 1 is circular, and the hollow structure inside it is cylindrical. An upper end cover 2 and a lower end cover 3 are fixedly installed, and a sealing ring 4 is arranged between the upper end cover 2 and the housing 1 and between the lower end cover 3 and the housing 1, and the sealing ring 4 can prevent the leakage of the magnetic fluid 13; the upper end cover 2 and the lower end cover 3 are provided with a groove 5, the center of the housing 1 is provided with a cooling pipe 6 that is vertically arranged and fixedly connected with the upper end cover 2 and the lower end cover 3, and the center of the cooling pipe 6 is provided with a through hole 61, Cooling ...