Rotary magnetic pole magnetorheology polishing device and method

Abstract

The invention provides a rotary magnetic pole magnetorheology polishing device used for polishing the inner wall of a pipe-like workpiece. The rotary magnetic pole magnetorheology polishing device comprises a magnetorheology liquid feeding system, a workpiece supporting and driving mechanism and a magnetic pole rotating mechanism. Under the effect of a liquid pressure pump, magnetorheology liquidis pumped in an inner cavity of a pipe fitting from a liquid input pipe on a pipe fitting clamping device, by means of high pressure generated by the pressure pump, the magnetorheology liquid flows fast in the inner cavity of the pipe fitting, when flowing through a polishing area, the magnetorheology liquid generates the rheology effect due to the influence of the intensity of a magnetic field, shear yield stress and apparent viscosity are increased fast, under reciprocating motion of the workpiece and rotating motion of a rotating magnetic frame, compound motion between the workpiece and themagnetorheology liquid is achieved, and removal of materials on the inner surface of the workpiece is completed. The invention further provides a method adopting the device for carrying out polishing. The polishing device can polish the inner wall of a thin short non-magnetic pipe automatically, and has the advantages of being simple in structure, uniform in polishing, high in efficiency, high incontrollability of the polishing process, free of surface damage and the like.

Description

technical field [0001] The invention relates to the polishing technology of the inner wall of a tubular workpiece, in particular to a technology of polishing the inner wall of a thin and short non-magnetic tube by using the magneto-rheological technology. Background technique [0002] Thin and short non-magnetic tubes are widely used in aerospace, medical, military and other fields. Restricted by the use environment, the roughness requirements of the pipe fittings are relatively high, so the polishing of the inner wall of the thin and short non-magnetic pipe is particularly important. In the prior art, electrochemical finishing and magnetic grinding are often used to polish the inner wall of the pipe. [0003] The electrochemical finishing method uses the principle of electrochemical dissolution of the metal anode, so that the passivation film formed on the surface is leveled under the action of the external flow field, and the processing is not restricted by the material a...

AI Technical Summary

Problems solved by technology

[0007] In order to solve technical problems such as poor controllability of the polishing process and uneven polishing in the prior art, the present invention is proposed

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