Spiral tool electrode and bipolar electrolysis grinding processing method thereof

Abstract

The invention relates to a spiral tool electrode and a bipolar electrolysis grinding processing method thereof, and belongs to the field of electrolytic grinding composite processing. The spiral toolelectrode comprises a tool bar and a tool head connected with the tool bar, wherein a spiral groove is formed in the periphery of the tool head, a grinding material layer covers the end head of the tool head, an electric insulation layer is closely jointed to the periphery of the tool head and the end surface of the tool bar, and an inert metal layer is closely jointed to the electric insulation layer. In the bipolar electrolysis grinding processing course, electric potential of the inert metal layer is higher than that of a workpiece, and for a processed surface and a nonprocessed surface ofthe workpiece, most of electric potential of a grinding material layer is attracted by the inert metal layer, and therefore, stray current corrosion can be restrained. Besides, insoluble electrolyticproducts can accelerate the process of discharging outwards under the action of spiral delivery of the spiral groove, so that the insoluble electrolytic products can be prevented from being adhered tothe surface of the workpiece. According to the spiral tool electrode and the bipolar electrolysis grinding processing method thereof, the efficacy, the stability, the precision and the surface integrity of metal small pieces subjected to electrolysis grinding processing can be effectively improved, and the technique is promoted to be promoted and industrially applied in the field of microscale processing.

Description

Technical field [0001] The invention relates to a spiral tool electrode and a bipolar electrolytic milling processing method thereof, belonging to the field of electrolytic grinding composite processing. Background technique [0002] With the development of material science and manufacturing technology, the demand for small metal parts in biomedicine, aerospace, environmental monitoring, electronic packaging and other fields is increasing day by day. These small metal parts mostly use difficult-to-cut materials such as titanium alloys and amorphous alloys, and are small in size and complex in structure. They require high precision and surface quality, which poses a major challenge to the current micro-machining technology. [0003] Electrolytic milling processing uses rod-shaped tool electrodes with abrasives as cathodes. In a manner similar to multi-axis CNC milling processing, material removal is achieved through the combination of electrochemical anode dissolution and mechanical...

AI Technical Summary

Problems solved by technology

Because titanium alloys and amorphous alloys are easy to passivate, have many insoluble electrolytic products, are large in size and have strong adhesion, in the process of electrolytic milling and grinding of small metal parts, on the one hand, insoluble electrolytic products often adhere to the surface of the workpiece, resulting in It is prone to short circuit, low efficiency and poor stability; on the other hand, pitting corrosion will occur on the processed surface of the workpiece under the action of stray current, which will destroy the accuracy and surface integrity

The above problems seriously restrict the promotion and industrial application of electrolytic milling technology in the field of micro-scale processing

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