Electric spindle oil-air lubricating device, control system and control method

Abstract

The invention provides an electric spindle oil-air lubricating device, a control system and a control method, and relates to the technical field of bearing lubricating. The electric spindle oil-air lubricating device comprises an electric spindle assembly with a rotation speed measuring element, an air adjusting mechanism, an oil amount control mechanism and a mixing mechanism; a front bearing anda back bearing are each provided with a temperature measuring element; the electric spindle assembly is provided with a first oil way communicating with the front bearing and a second oil way communicating with the back bearing; the electric spindle assembly, the oil amount control mechanism and the mixing mechanism sequentially communicate with one another to form a circulating loop, and the mixing mechanism communicates with the first oil way and the second oil way; the mixing mechanism is provided with an oil-air mixing valve; the air adjusting mechanism communicates with the mixing mechanism, and the oil amount control mechanism is electrically connected with the air adjusting mechanism; and the oil amount control mechanism is used for controlling the opening degree of the air adjusting mechanism and the flow of lubricating oil introduced into the mixing mechanism according to the measured temperature and rotation speed.

Description

technical field [0001] The invention relates to the technical field of bearing lubrication, in particular to an electric spindle oil-air lubrication device, a control system and a control method. Background technique [0002] CNC machine tools are developing in the direction of ultra-high speed and ultra-precision, and the machine tool spindle is the most critical component in CNC machine tools. The machine tool electric spindle integrates the spindle and the motor in structure, and has the advantages of low noise and wide speed range. [0003] At present, the electric spindle has the following technical problems: the precision error of the spindle caused by the temperature rise of the lubricating oil is too large. When the existing technology improves the problem, the increase of the oil volume at the front bearing and the rear bearing will improve the problem of temperature rise, but it often cannot automatically adjust the oil volume for lubrication, and the spindle spee...

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Problems solved by technology

[0004] In order to solve the technical problems in the prior art that the temperature rise of lubricating oil affects the precision of the spindle and cannot provide a suitable amount of oil for the bearing, the main purpose of the present invention is to provide an automatic adjustment of lubricating oil and air for detecting the oil temperature at the bearing and the spindle speed. Quantitative electric spindle oil-air lubrication device, control system and control method

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