Static-pressure rotation table constant linear speed running oil film lubricating performance detection method

Abstract

The invention discloses a static-pressure rotation table constant linear speed running oil film lubricating performance detection method. The static-pressure rotation table constant linear speed running oil film lubricating performance detection method comprises the following steps that the static-pressure rotation table constant linear speed running characteristic is analyzed; according to the static-pressure rotation table oil pad periodic distribution characteristic, a single rectangular oil cavity is taken for analysis and divided into an area A and an area B, the static-pressure rotationtable constant linear speed direction is set, and a coordinate system is set according to basic parameters of an oil pad; according to the static-pressure rotation table constant linear speed direction and the basic parameters of the oil pad, the lubricating oil flow of the area A and the area B of the rectangular oil cavity is calculated and analyzed; and the static-pressure rotation table constant linear speed running lubricating oil flow is compared with the steady state flow reference value, and if the static-pressure rotation table constant linear speed running lubricating oil flow is lower than the reference value, timely replacement is conducted. The static-pressure rotation table constant linear speed running oil film lubricating performance detection method has the important significance for effective prediction of the static-pressure rotation table constant linear speed running oil film lubricating performance and improving of the surface quality of a machined workpiece on astatic-pressure rotation table.

Description

technical field [0001] The invention belongs to the technical field of oil film lubrication performance detection, and in particular relates to a method for detection of oil film lubrication performance of a static pressure turntable running at a constant linear speed. Background technique [0002] The constant linear speed cutting function is an essential function of high-end CNC lathes. Using this function can improve the processing efficiency and ensure the consistency of the surface quality of the processed surface, which has broad application prospects. In this mode, the spindle speed changes continuously with the diameter of the workpiece, and the oil film in the gap of the hydrostatic bearing is always in the process of changing from one stable working state to another stable working state, which causes the pressure in the oil chamber to fluctuate, and then affect the running accuracy. Based on this, the present invention theoretically analyzes the lubrication charac...

AI Technical Summary

Problems solved by technology

In this mode, the spindle speed changes continuously with the diameter of the workpiece, and the oil film in the gap of the hydrostatic bearing is always in the process of changing from one stable working state to another stable working state, which causes the pressure in the oil chamber to fluctuate, and then have an impact on running accuracy

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