Low-frequency vibration assisted cut-in type electrolytic turning machining method and implementation device

Abstract

The invention discloses a low-frequency vibration assisted cut-in type electrolytic turning machining method and an implementation device, and belongs to the technical field of electrolytic machining.The method is characterized in that a rotary workpiece rotates and vibrates in the low-frequency radial direction at the same time relative to an inner liquid spraying tool, electrolyte updating of amachining area can be promoted, the material removal rate is increased, and the machining roundness is improved; a liquid sealing plate and a liquid sealing cavity are tightly attached to form a closed flow field space following the inner liquid spraying tool, electrolyte leakage of a non-machining part of the inner liquid spraying tool can be reduced, sufficient supply of electrolyte flow in a machining area is guaranteed, and the machining stability is improved; and the cut-in type electrolytic turning machining process is divided into radial deep cutting machining and circumferential precise forming machining, and the cut-in type electrolytic turning material removal rate and machining quality are both considered. The implementation device comprises a liquid sealing device, the inner liquid spraying tool, the rotary workpiece, a vibrating device and a rotating device. The method and the implementation device have important significance in increasing the material removal rate of therotary workpiece and improving the machining stability and the machining quality of the rotary workpiece.

Description

Technical field[0001]The invention relates to a low-frequency vibration assisted cut-in electrolytic turning machining method and an implementation device, and belongs to the technical field of electrolytic machining.Background technique[0002]Rolling bearings are essential basic parts 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 its raceway processing quality has a direct impact on the accuracy, performance and service life of the bearing product. At present, plunge grinding and hard turning 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 it is difficult to completely eliminate the subse...

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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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