Method for adjusting oil film temperature of dynamic and static hybrid grinding head

Abstract

The invention relates to a method for adjusting oil film temperature of a dynamic and static hybrid grinding head. The method comprises the following step: heating or cooling water according to an oil temperature and water temperature detection result from a temperature sensor, thereby utilizing water to directly heat or cool the lubricating oil which enters into a dynamic and static hybrid spindle bearing. According to the method, a temperature adjusting device is additionally arranged in a traditional working oil passage for supplying the lubricating oil to the dynamic and static hybrid spindle bearing, wherein water is taken as a heat conduction medium of the temperature adjusting device. The temperature adjusting device comprises an oil supply system, a water cooler and a heat exchanger, wherein the heat exchanger with a built-in spiral pipe heater is connected with the water cooler through a cooling water inlet pipe and a cooling water outlet pipe and is connected to the oil supply system through an oil inlet pipe and an oil outlet pipe. According to the method, the water cooler and the spiral pipe heater are arranged in an interlocked state. According to the method, the oil film temperature of the dynamic and static hybrid grinding head can be automatically adjusted by controlling the heat exchanger, thereby achieving the win-win effect of adjusting the temperature of the lubricating oil and preventing the oil from deteriorating under the influence of excessive heating. The method for adjusting the oil film temperature of the dynamic and static hybrid grinding head is suitable for temperature adjustment of the lubricating oil of a hydraulic or static system of large and middle sized machine tool.

Description

technical field [0001] The invention relates to a method for adjusting the oil film temperature of a dynamic and static pressure grinding head, belonging to the technical field of high-precision machine tool lubrication. Background technique [0002] High-precision machine tools generally use dynamic and static pressure bearings as their main shaft bearings, and dynamic and static pressure bearings generally use lubricating oil as the lubricating medium, and the viscosity of lubricating oil has a significant impact with temperature changes, and changes in the viscosity of lubricating oil have a significant impact on the performance and temperature rise of the main shaft. Influence, and then affect the machining accuracy and dimensional stability of the machine tool. The traditional lubricating oil temperature adjustment method is to heat or cool the lubricating oil in the entire oil tank. On the one hand, the temperature adjustment time is long and the efficiency is low. On...

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Problems solved by technology

The traditional lubricating oil temperature adjustment method is to heat or cool the lubricating oil in the entire oil tank. On the one hand, the temperature adjustment time is long and the efficiency is low. On the other hand, during the heating process of the lubricating oil, due to the local high temperature of the heating parts It is easy to cause the aging and deterioration of oil products, thus affecting the service life of oil products, and sometimes it will cause the bad consequences of spindle locking caused by blocked oil passages due to deteriorated oil products

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