Electrochemical compound magnetic grinding processing device and method thereof

Abstract

The invention provides an electrochemical composite magnetic grinding device and a method adopted by the device. The electrochemical composite magnetic grinding device comprises an electrochemical machining unit, a magnetic grinding unit and a moving unit, wherein the electrochemical machining unit comprises an electrolyte accommodating space, the magnetic grinding unit comprises an abradant accommodating space, the electrolyte accommodating space and the abradant accommodating space are separated so as to prevent multiple magnetic abradants in the abradant accommodating space from being in lap joint between a workpeice and a machined electrode of the electrochemical machining unit, discharging of the workpeice or the machined electrode is avoided, damage of the workpeice surface and the machined electrode is avoided, and abradant loss is reduced.

Description

Technical field [0001] The invention relates to a composite processing device and a method thereof, in particular to an electrochemical composite magnetic grinding processing device and a method in which an electrochemical processing unit and a magnetic grinding processing unit are separately arranged. Background technique [0002] Surface polishing is the use of physical mechanical action, chemical reaction or electrochemical reaction to modify the surface of the workpiece. Surface polishing does not improve the dimensional accuracy or geometric accuracy of the workpiece, but it can make the surface roughness of the workpiece It is lowered and becomes relatively flat, which helps the mechanical components to move or rotate smoothly. For precision machinery, polishing the component surface can avoid additional friction caused by uneven surface and affect mechanical precision and service life. [0003] Generally speaking, polishing the surface of the workpiece is mainly based on the...

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Problems solved by technology

However, including the above-mentioned patents, the existing devices using this technology all integrate electrochemical machining and magnetic grinding in the same space. Although it is convenient to perform electrochemical machining and magnetic grinding at the same time, when performing electrochemical machining, due to The magnetic abrasive and the workpiece are placed in the electrolyte at the same time. The magnetic abrasive will overlap between the workpiece and the processing electrode of the electrochemical machining. Since the magnetic abrasive has conductivity, it will affect the surface of the workpiece during the electrochemical machining. Discharge with the processing electrode will cause damage. In addition, the magnetic abrasive will also have anode passivation or anode dissolution, which will make the magnetic abrasive wear faster, which will increase the cost of electrochemical composite magnetic grinding.

[0006] In addition, when electrochemical machining and magnetic grinding are performed in the same space at the same time, the surface of the workpiece forms a passivation layer due to electrochemical machining, but the thickness of the passivation layer formed on each part of the surface of the workpiece will be different, so it has When the surface of the passivation layer is subjected to magnetic grinding at the same time, because the passivation layer is easily removed and the raw material of the workpiece is not easy to be removed, the thinner part of the passivation layer will first expose the surface of the workpiece that is not easy to be removed. , and the passivation layer is still removed quickly at the thicker passivation layer, so the amount of grinding processing on the surface of the workpiece will be different, so the shape accuracy of the processed workpiece is not good

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