A low-frequency vibration-assisted plunge-cut electrolytic turning processing method and implementation device

Abstract

The invention discloses a low-frequency vibration-assisted plunge-in electrolytic turning processing method and a realization device, belonging to the technical field of electrolytic processing. It is characterized in that: the rotary workpiece rotates and vibrates in the low-frequency radial direction at the same time relative to the internal spray tool, which can promote the renewal of the electrolyte in the processing area, improve the material removal rate and the roundness of processing; it is formed by the tight fit of the liquid sealing plate and the liquid sealing cavity Followed by the closed flow field space of the internal spray tool, it can reduce the electrolyte leakage of the non-processing part of the internal spray tool, ensure sufficient supply of electrolyte flow in the processing area, and improve processing stability; divide the plunge-in electrolytic turning process into For radial deep cutting and circumferential precise forming, both the material removal rate and processing quality of plunge-cut electrolytic turning are taken into account. The realization device includes a liquid sealing device, an internal liquid spraying tool, a rotary workpiece, a vibrating device and a rotating device. The invention has great significance for improving the material removal rate, processing stability and processing quality of the rotary workpiece.

Description

technical field [0001] The invention relates to a low-frequency vibration-assisted plunge-in electrolytic turning processing method and a realization device, belonging to the technical field of electrolytic processing. Background technique [0002] Rolling bearings are crucial basic components in the fields of aerospace, high-speed trains, and communication satellites. Bearing failure will affect the service performance and work safety of the overall equipment, and even cause catastrophic accidents. The bearing ring is one of the three major parts of the bearing, and the processing quality of its raceway has a direct impact on the precision, working performance and service life of the bearing product. At present, the plunge grinding and hard turning processes are mainly used to remove the machining allowance after heat treatment of the raceway and ensure the machining accuracy. However, the surface of the bearing ring after rough grinding is prone to burns and cracks, and i...

AI Technical Summary

Problems solved by technology

However, existing studies have shown that the use of rotary tools with liquid holes (or liquid grooves) on the side wall for electrolytic machining of rotary parts has a small effective machining area and a low material removal rate.

In addition, the electrolyte flowing out of the non-processing part of the tool cannot enter the processing area, and the utilization rate of the electrolyte is not high. The processing area is prone to insufficient flow and lack of liquid, which affects the stability of the processing process.

[0004] Using the electrolytic machining method of circular deep cutting with rotary tools, the tool is cut into the inside of the workpiece, and the workpiece is rotated at a very low speed at the same time, which can increase the processing area and improve the material removal rate, but the processed parts are prone to secondary corrosion, and the roundness and surface quality of the processing still not high

Therefore, it is only suitable for the high-efficiency removal processing of large margins of rotary parts, and it is difficult to meet the needs of high-precision processing

[0005] The machining method of radial feed jet electrolytic turning with block (or flake) internal spray tool can avoid the leakage of electrolyte in the non-processing part of the internal spray rotary tool and improve the utilization rate of electrolyte, but the electrolyte in the processing area Significantly divergent flow, flow field stability is not high, it is difficult to remove workpiece material uniformly

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