Cooling circulation system and method for reducing thermal errors of machine tool spindle

Abstract

The invention relates to the field of machine tool spindle cooling, concretely relates to a cooling circulation system and method for reducing thermal errors of a machine tool spindle. The system comprises a spindle box body, a spindle arranged in the spindle box body, a motor arranged in the middle section of the spindle, and a motor cooling sleeve sleeved outside the motor, the motor cooling sleeve is provided with two sets of motor cooling flow channels in opposite directions, a plurality of temperature sensors are distributed on the motor, the front end and the rear end of the main shaft are respectively provided with a rolling bearing, the bearings are sleeved with a bearing cooling sleeve, the main shaft is provided with a rotating speed sensor, and the cooling assembly is connected with the cooling flow channels. A data processing controller is connected with the temperature sensor, the rotating speed sensor and the cooling assembly. The cooling efficiency can be improved, effective control over the temperature and thermal deformation of the machine tool spindle is achieved, the defects that a traditional cooling method is non-adjustable in cooling, unbalanced in cooling and low in cooling efficiency are overcome, and good engineering application prospects are achieved.

Description

technical field [0001] The invention relates to the field of cooling of machine tool spindles, and more specifically, to a cooling cycle system for reducing thermal errors of machine tool spindles. Background technique [0002] With the rapid development of my country's manufacturing equipment technology, the precision requirements of machine tools are getting higher and higher. The high-power spindle system of precision machine tools ensures the high efficiency and quality of machine tool processing. However, during the high-speed and long-term operation of the machine tool spindle, the spindle bearing and motor will generate a lot of heat. The heat is transmitted to the spindle and other parts of the spindle box through heat radiation and heat conduction, causing uneven heating of the spindle and the spindle box, resulting in thermal errors in the axial and radial directions of the spindle, and ultimately affecting the machining accuracy of the machine tool. [0003] Aim...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the defect of insufficient cooling effect of the cooling device in the prior art, provide a cooling system that reduces the thermal error of the machine tool spindle, can improve the heat dissipation effect, and realize effective control of the temperature and deformation of the machine tool spindle, and Improve machining accuracy of machine tools

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