High-rigidity grinding main shaft system

Abstract

The invention discloses a high-rigidity grinding main shaft system which comprises a main shaft. A bearing locating mechanism is arranged at the power input end of the main shaft, a rigid locating seat is arranged at the power output end of the main shaft, the power output end of the main shaft is sleeved with a main shaft tool handle where a grinding wheel can be mounted, and a conical matching structure is arranged between the main shaft tool handle and the rigid locating seat. The bearing locating mechanism comprises a bearing seat and a liquid-expansion sleeve located in the bearing seat and mounted on the main shaft in a sleeved mode, a bearing is arranged between the bearing seat and the liquid-expansion sleeve, a liquid-expansion section is arranged on the liquid-expansion sleeve, a liquid-expansion clamping section stretching into the liquid-expansion section is arranged on the main shaft tool handle, and a liquid-expansion clamping structure is arranged between the liquid-expansion section and the liquid-expansion clamping section. The conical matching structure between one end of the main shaft tool handle and the rigid locating seat is adopted for rigid connection, the other end of the main shaft tool handle and the liquid-expansion sleeve are rigidly connected through the liquid-expansion clamping structure, in the high-speed rotation process, radial vibration caused by mounting gaps is avoided, and grinding precision can be effectively improved.

Description

technical field [0001] The invention relates to a spindle system of a grinding machine tool or device, in particular to a high-rigidity grinding spindle system. Background technique [0002] The Chinese patent application with the publication number CN102765051A discloses a grinding wheel spindle structure of a grinding machine. The grinding wheel spindle structure includes a bracket, a spindle, a grinding wheel frame, and an eccentric shaft. The front end of the eccentric shaft is supported in the internal installation cavity of the eccentric shaft through bearings, the eccentric shaft passes through the internal installation hole of the bracket, the tail input end of the main shaft is fastened to one end of the flexible universal joint, and the flexible universal joint The other end of the universal joint passes through the tailstock of the bracket and is fastened to the center of the end cover plate. The end cover plate is circumferentially fastened to the unloading pulle...

AI Technical Summary

Problems solved by technology

[0003] Although the structure of the grinding wheel spindle can improve the rotation error of the spindle to a certain extent, since the output end of the spindle is rigidly connected with the grinding wheel frame, the input end is only positioned with the internal installation cavity of the eccentric shaft, resulting in insufficient rigidity of the spindle system , that is, there must be an installation gap between the main shaft and the internal installation cavity of the eccentric shaft. When the main shaft rotates at high speed, there will inevitably be radial vibration, which will lead to a decrease in grinding accuracy

[0004] In particular, in the process of grinding gears, due to errors in the grinding spindle system, none of the existing grinding wheel grinding tools can meet the requirements of high-precision gear grinding

In order to improve the precision of gear grinding, it is necessary to purchase expensive high-end gear grinding machines, which will undoubtedly increase the burden on enterprises

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