Motor embedded type headstock

Abstract

The invention belongs to the technical field of machine tools and relates to a headstock, in particular to a motor embedded type headstock which comprises a headstock body with a mounting hole and a main shaft arranged in the mounting hole. In the mounting hole, the outside of the main shaft is sleeved with a motor rotor, the motor rotor is sleeved with a motor stator provided with a motor coil, the upper end of one side of the headstock body is provided with an installation hole, and the installation hole is provided with a temperature sensor used for monitoring the temperature in the headstock body. A machined product is good in smoothness, high in size precision and high in working efficiency; an encoder is used for feeding back the rotating speed of the main shaft, so that the rotatingspeed of the main shaft can be accurately mastered and controlled, and the machining stability and the transmission precision are improved; and a temperature and current monitoring device monitors the headstock, and an air cooling or water cooling device can quickly dissipate heat of the headstock, so that the conditions of bearing pretightening failure and electric spindle motor burnout caused by overhigh temperature are avoided, and the service life of the headstock is prolonged.

Description

technical field [0001] The invention belongs to the technical field of machine tools, and relates to a bedside box, in particular to a built-in motor type bedside box. Background technique [0002] The operation of the motor will generate a very large heat source. The heat source of the motor plus the heat source generated by the spindle bearing will produce a superposition of heat sources, resulting in a very high temperature of the electric spindle body. Since all the components of the electric spindle are made of metal, the metal will expand when heated. Cold shrinkage and deformation will cause the preload of the bearing to fail, causing the bearing to be broken, and the serious temperature rise will directly lead to the burning of the electric spindle motor; in addition, the spindle structure of the ordinary machine tool is usually driven by the transmission belt and the belt pulley at present. The transmission is extremely reduced, and noise and vibration are generated...

AI Technical Summary

Problems solved by technology

[0002] The operation of the motor will generate a very large heat source. The heat source of the motor plus the heat source generated by the spindle bearing will produce a superposition of heat sources, resulting in a very high temperature of the electric spindle body. Since all the components of the electric spindle are made of metal, the metal will expand when heated. Cold shrinkage and deformation will cause the preload of the bearing to fail, causing the bearing to be broken, and the serious temperature rise will directly lead to the burning of the electric spindle motor; in addition, the spindle structure of the ordinary machine tool is usually driven by the transmission belt and the belt pulley at present. The transmission is extremely reduced, and noise and vibration are generated during processing, resulting in poor finish and low dimensional accuracy of the processed products

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