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CSME 2018/12
Volume 39 No.6
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565-574
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Five-Axis Slerp for Tool-Orientation Planning in a Five-Axis CNC Machine
Chang Dau Yana, Wei-Hua Chienga and Shyr-Long Jengb
aDepartment of Mechanical Engineering, National Chiao Tung University, Taiwan, ROC.
bDepartment of Electrical Engineering, Ta Hua University of Science and Technology, Taiwan, ROC.
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Abstract:
The quaternion spherical linear interpolation method (slerp), which many researchers have adopted for numerical control, is inadequate for tool-axis-orientation planning in general five-axis computer numerical control machines. This paper explains why the quaternion slerp method fails to achieve constant rotational speed. The machining quality is degraded when the quaternion slerp method is used in five-axis machining. To compensate for this failure, this paper proposes a solution for tool-axis-orientation planning, the five-axis slerp method, which generates steady angular velocity of the interpolation curve.
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Keywords: CNC mechanism, Planning, Slerp.
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*Corresponding author; e-mail:
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©
2018
CSME , ISSN 0257-9731
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