We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Influence Analysis of Geometric Error and Compensation Method for Four-Axis Machining Tools with Two Rotary Axes.
- Authors
Zhao, Guojuan; Jiang, Shengcheng; Dong, Kai; Xu, Quanwang; Zhang, Ziling; Lu, Lei
- Abstract
Four-axis machine tools with two rotary axes are widely used in the machining of complex parts. However, due to an irregular kinematic relationship and non-linear kinematic function with geometric error, it is difficult to analyze the influence the geometry error of each axis has and to compensate for such a geometry error. In this study, an influence analysis method of geometric error based on the homogeneous coordinate transformation matrix and a compensation method was developed, using the Newton iterative method. Geometric errors are characterized by a homogeneous coordinate transformation matrix in the proposed method, and an error matrix is integrated into the kinematic model of the four-axis machine tool as a means of studying the influence the geometric error of each axis has on the tool path. Based on the kinematic model of the four-axis machine tool considering the geometric error, a comprehensive geometric error compensation calculation model based on the Newton iteration was then constructed for calculating the tool path as a means of compensating for the geometric error. Ultimately, the four-axis machine tool with a curve tool path for an off-axis optical lens was chosen for verification of the proposed method. The results showed that the proposed method can significantly improve the machining accuracy.
- Subjects
MACHINE tools; T-matrix; GEOMETRIC analysis; GEOMETRIC approach; COORDINATE transformations; NEWTON-Raphson method
- Publication
Machines, 2022, Vol 10, Issue 7, p586
- ISSN
2075-1702
- Publication type
Article
- DOI
10.3390/machines10070586