Abstract
The mirror image of the milling side and the processing side of a five-axis milling machine is followed by three moving pairs and two rotating pairs on each side, which can achieve high-precision machining of thin-wall parts, but its error compensation movement is more complex. Because there is a certain coupling relationship between the error compensation amount of each moving pair and the error value (position and direction error) between the cutter and the workpiece. The motion characteristics of the five-axis mirror milling machine are analyzed, and then the transformation matrix between the coordinates of each motion sub-coordinate is established by the square coordinate transformation. Based on the error compensation operation assumption error motion is analyzed and the relationship between the compensation movement, every motion pair of five-axis machine tool position and orientation error compensation movement decoupling, can build space five mathematical model for calculating the error compensation mirror for five-axis milling machine tool error real-time compensation provides a theoretical basis.
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