Method for improving precision of numerically-controlled machine tool main shaft rotating thermal error measuring data
A technology of CNC machine tools and measurement data, which is applied in measurement/indication equipment, metal processing mechanical parts, metal processing equipment, etc. High stability effect
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[0033] see figure 1 , a method for improving the accuracy of measuring data accuracy of a spindle rotation thermal error of a CNC machine tool, specifically comprising the following steps:
[0034] (1) For the inspection rod of the spindle of the CNC machine tool, two precision displacement sensors (contact or non-contact) are placed on the X and Y directions of the same circular section passing through the center of the inspection rod to measure the distance between the sensors and the center of the inspection rod. The position X and Y direction of the displacement change of the point on the check rod. Before the thermal deformation of the main shaft of the machine tool, the radius of the inspection rod is R, the coordinates of the center of the inspection rod are O (0,0), and the coordinates of the X-direction point of the inspection rod are measured A (x 0 ,0) (x 0 =R) and Y-direction point coordinates B (0,y 0 ) (y 0 =R), such as figure 1 shown;
[0035] (2) After th...
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