期刊
出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/09544054231205140
关键词
Geometric error modelling; geometric error compensation; simplified actual inverse kinematics; non-orthogonal five-axis machine tool; higher-order error term
This paper proposes a simplified algorithm to derive analytical expressions for the position-independent geometric error compensation of a non-orthogonal five-axis machine tool (NOFAMT). The effectiveness and efficiency of the algorithm were verified through numerical analysis and virtual machining.
Geometric errors are the key error sources that affect the machining quality of a five-axis machine tool. In the case of a non-orthogonal five-axis machine tool (NOFAMT), the modelling and compensation of geometric errors can be quite complex. This paper proposes a simplified modelling algorithm to derive the analytical expressions for the position-independent geometric error (PIGE) compensation of a NOFAMT without generating higher-order error terms. First, the geometric error modelling was conducted based on the homogeneous transformation matrix (HTM). Then, algebraic expressions for PIGE compensation were obtained according to the actual inverse kinematics and a simplified algorithm. By using the simplified algorithm, the efficiency of deriving algebraic expressions for geometric error compensation can be greatly enhanced. The PIGE compensation's numerical control (NC) codes can be directly computed using these algebraic expressions. Finally, the effectiveness and efficiency of the new algorithm were verified by numerical analysis and virtual machining. The detailed results were compared with those obtained using the differential method, and both sets of results showed the same trend.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据