Device for conducting blind hole polishing of conductive workpiece by using liquid metal and method thereof

Abstract

The invention discloses a device for conducting blind hole polishing of a conductive workpiece by using liquid metal and a method thereof. The device comprises a workbench, a moving positioning device, a rotating runner device and a rotating magnetic field device, wherein the moving positioning device is mounted on the workbench, the rotating runner device is mounted on the moving positioning device, and the rotating magnetic field device is fixed on the workbench obliquely below the rotating runner device. A blind hole of a blind hole type workpiece can be polished, and the blind hole of theto-be-polished workpiece is in a negative pressure state through air extraction, so that a abrasive particle flow can enter the blind hole more smoothly; and the abrasive particle flow used is a liquid metal abrasive particle flow, metal particles in the liquid metal abrasive particle flow can form good contact with the surface of the to-be-machined workpiece under the action of a rotating magnetic field generated by an annular permanent magnet, micro cutting is carried out, mechanical deformation is not generated on the surface of the blind hole of the to-be-machined workpiece, the polishingefficiency is faster, the effect is better, and micro cutting is carried out.

Description

technical field [0001] The invention relates to the field of liquid metal, and more specifically relates to a device and method for polishing a blind hole of a conductive workpiece by using liquid metal. 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 u...

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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 conductive workpiece printed by 3D printing technology, and proposes a device and method for polishing the blind hole of the conductive workpiece using liquid metal. Under the pressure polishing environment, the electromagnetic field controls the movement of the liquid metal abrasive grain flow to realize the automatic polishing of the blind hole of the workpiece to be processed. The blind hole of the workpiece to be processed is placed in a negative pressure state by pumping air, so that the liquid metal abrasive grain flow can enter more smoothly. In the blind hole, during the polishing process, the electromagnetic field continuously acts on the liquid metal abrasive flow. Under the action of the electromagnetic field, the liquid metal abrasive flow forms a good contact with the surface of the workpiece to be processed, and the blind hole of the workpiece to be processed is micro-cut and polished. In order to realize the blind hole polishing of the workpiece to be processed

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