Jixie chuandong (Sep 2022)
Modeling of the Mapping Relationship Between Machine Tool Errors and Free-form Milling Machining Errors
Abstract
In order to improve the gear machining accuracy， a modeling method of mapping relationship between machine tool errors and gear errors is proposed. According to the gear meshing principle and spatial envelope milling theory， a homogeneous coordinate transformation matrix including machine tool error is established， and the corresponding gear end profile is solved. Through the error sensitivity analysis， it is found that the tooth profile and tooth direction error are in positive proportion to the rotation angle errors of Y-axis and Z-axis， and meet the superposition principle. According to the error detection results of the workpiece， the error compensation components of each axis are calculated. The experimental results show that the tooth profile error is improved from grade 7 accuracy （ISO 1328-1:2013） to grade 4 accuracy， and the tooth direction error is improved from grade 7 to grade 6.
