Flat-end tool orientation based on rotation-minimizing frame

doi:10.1007/s40436-019-00271-4

Advances in Manufacturing ›› 2019, Vol. 7 ›› Issue (3): 257-269.doi: 10.1007/s40436-019-00271-4

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Flat-end tool orientation based on rotation-minimizing frame

Xiang Zou¹, Hon-Yuen Tam², Hai-Yin Xu¹, Ke Shi¹

1 School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China;
2 College of Science and Engineering, Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, People's Republic of China

收稿日期:2019-01-10 修回日期:2019-03-27 出版日期:2019-09-25 发布日期:2019-10-09
通讯作者: Hon-Yuen Tam E-mail:metamhy@cityu.edu.hk

Flat-end tool orientation based on rotation-minimizing frame

Xiang Zou¹, Hon-Yuen Tam², Hai-Yin Xu¹, Ke Shi¹

1 School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, People's Republic of China;
2 College of Science and Engineering, Department of Mechanical Engineering, City University of Hong Kong, Hong Kong, People's Republic of China

Received:2019-01-10 Revised:2019-03-27 Online:2019-09-25 Published:2019-10-09
Contact: Hon-Yuen Tam E-mail:metamhy@cityu.edu.hk

摘要/Abstract

摘要： Well-designed tool orientation is crucial for the quality execution of five-axis machining with flat-end tools. Tool orientation can be specified in terms of tool inclination and tool tilt angles. For a given surface path, these aspects need to be specified for each cutter contact point along the path, because poor tool orientation choice can cause large axial acceleration of the machine tool, leading to inferior quality of the machined surface. The rotation-minimizing frame aims to reduce unnecessary frame rotation during movement. This concept has been adopted to develop tool orientation methods that allow variation in the inclination angle, the tilt angle, and both the inclination and tilt angles. The intention is to reduce unnecessary rotation of the tool frame as the tool follows a specified path. Evaluation was conducted in the context of five-axis flat-end tool machining. Based on these methods, tool orientation was planned along surface paths of a torus, sphere, and dome. Changes in tool orientation were always smooth. From the perspective of reducing tool orientation changes and axial acceleration, it was demonstrated that simultaneous variation of the inclination and tilt angles based on rotation minimization provided the best results.

The full text can be downloaded at https://link.springer.com/content/pdf/10.1007%2Fs40436-019-00271-4.pdf

关键词: Five-axis machining, Tool orientation, Rotation-minimizing frame, Numerical control

Abstract: Well-designed tool orientation is crucial for the quality execution of five-axis machining with flat-end tools. Tool orientation can be specified in terms of tool inclination and tool tilt angles. For a given surface path, these aspects need to be specified for each cutter contact point along the path, because poor tool orientation choice can cause large axial acceleration of the machine tool, leading to inferior quality of the machined surface. The rotation-minimizing frame aims to reduce unnecessary frame rotation during movement. This concept has been adopted to develop tool orientation methods that allow variation in the inclination angle, the tilt angle, and both the inclination and tilt angles. The intention is to reduce unnecessary rotation of the tool frame as the tool follows a specified path. Evaluation was conducted in the context of five-axis flat-end tool machining. Based on these methods, tool orientation was planned along surface paths of a torus, sphere, and dome. Changes in tool orientation were always smooth. From the perspective of reducing tool orientation changes and axial acceleration, it was demonstrated that simultaneous variation of the inclination and tilt angles based on rotation minimization provided the best results.

The full text can be downloaded at https://link.springer.com/content/pdf/10.1007%2Fs40436-019-00271-4.pdf

Key words: Five-axis machining, Tool orientation, Rotation-minimizing frame, Numerical control

Xiang Zou, Hon-Yuen Tam, Hai-Yin Xu, Ke Shi. Flat-end tool orientation based on rotation-minimizing frame[J]. Advances in Manufacturing, 2019, 7(3): 257-269.

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Flat-end tool orientation based on rotation-minimizing frame

Flat-end tool orientation based on rotation-minimizing frame

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