Polishing device and method for polishing blind hole of non-conductive workpiece

Abstract

The invention discloses a polishing device and method for polishing a blind hole of a non-conductive workpiece. The polishing device comprises a working table, a movable positioning device, a rotatingrunner device and a rotating magnetic field device, wherein the movable positioning device is arranged on the working table; the rotating runner device is arranged on the movable positioning device;the rotating magnetic field device is fixed onto the working table on the inclined downward part of the rotating runner device. According to the polishing device and method for polishing the blind hole of the non-conductive workpiece provided by the invention, the blind hole of a blind hole workpiece can be polished, and the blind hole of the workpiece to be polished is exhausted so as to be at anegative pressure state, so that an abrasive particle flow can smoothly enter the blind hole. According to the polishing device and method for polishing the blind hole of the non-conductive workpieceprovided by the invention, an orifice of the workpiece to be process is slantways upwards, the abrasive particle flow in the polishing process is gathered in the blind hole, and the adopted liquid metal abrasive particle flow produces turbulent flow under a rotating magnetic field, so that compared with traditional media such as water and oil, liquid metal has the characteristics of high density and good flow controllability.

Description

technical field [0001] The invention relates to the field of liquid metal, and more specifically relates to a polishing device and method for polishing blind holes of non-conductive workpieces. Background technique [0002] 3D printing technology is also called additive manufacturing technology, which is an advanced manufacturing technology called rapid prototyping in China. Its essential principle is discrete and accumulation. The manufacture of three-dimensional solids is transformed into the accumulation of two-dimensional layers and continuous superposition along the forming direction, and finally realizes the manufacture of three-dimensional solids. As the use of 3D printing technology becomes more and more widespread, more and more blind hole products are produced by 3D printing technology. Compared with the through hole, the blind hole refers to the hole that does not pass through. It is widely used in life and industrial production. At the same time, the use of high...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing polishing method cannot polish the blind hole of the non-conductive workpiece printed by 3D printing technology, and proposes a polishing device and method for polishing the blind hole of the non-conductive workpiece. Using the electromagnetic field in the negative pressure polishing environment to control the movement of the liquid metal abrasive grain flow to realize the automatic polishing of the blind hole of the workpiece to be processed, and to make the blind hole of the workpiece to be processed in a negative pressure state by pumping air, so that the liquid metal abrasive grain flow can be smoother During the polishing process, the electromagnetic field continuously acts on the liquid metal abrasive flow, and the liquid metal abrasive flow forms good contact with the surface of the workpiece to be processed under the action of the electromagnetic field, and performs micro-cutting on the blind hole of the workpiece to be processed. Polishing to achieve blind hole polishing of workpieces to be machined

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