Main shaft supporting structure of centerless grinder for grinding valve lock groove

Abstract

The invention provides a main shaft supporting structure of a centerless grinder for grinding a valve lock groove. By the main shaft supporting structure, a main shaft is not required to contact a bearing when rotating, and is low in starting torque and power consumption and high in rotation accuracy. The main shaft supporting structure comprises the main shaft, a main shaft shell and a grinding wheel chuck, wherein the grinding wheel chuck is sleeved at the end part of the main shaft; and the main shaft penetrates through the main shaft shell. The main shaft supporting structure is characterized in that: a hydrodynamic pressure and hydrostatic pressure oil film bearing is arranged at each of the two ends of the main shaft shell; the main shaft penetrates through inner holes of the hydrodynamic pressure and hydrostatic pressure oil film bearings; an oil line is reserved in the main shaft shell, and is communicated with inner oil cavities of the hydrodynamic pressure and hydrostatic pressure oil film bearings; and the inner oil cavities are uniformly distributed on inner sidewalls of the inner holes of the hydrodynamic pressure and hydrostatic pressure oil film bearings, and wrap the peripheral surface of the main shaft.

Description

technical field [0001] The invention relates to the structural field of a centerless grinder for grinding an air door lock groove, in particular to a main shaft support structure of a centerless grinder for grinding an air door lock groove. Background technique [0002] The main shaft of the existing centerless grinding machine for grinding the valve lock clamp groove is directly installed in the housing through the bearings at both ends, and the main shaft needs to be in contact with the bearing when it rotates. The metals are in contact with each other, resulting in low rotation accuracy of its spindle. Contents of the invention [0003] In view of the above problems, the present invention provides a main shaft support structure for a centerless grinding machine for grinding valve lock clamp grooves, which enables the main shaft to rotate without contacting the bearing, has small starting torque, low power consumption, and high rotation accuracy of the main shaft. ...

AI Technical Summary

Problems solved by technology

[0002] The main shaft of the existing centerless grinding machine for grinding the valve lock clamp groove is directly installed in the housing through the bearings at both ends, and the main shaft needs to be in contact with the bearing when it rotates. The metal contacts each other, resulting in low rotation accuracy of its spindle

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