Tool path generation for machining compound surfaces with extended cut region method |
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Authors: | Jian-Zhong Yang Qi-Fu Wang Zheng-Dong Huang Li-Ping Chen |
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Affiliation: | (1) CAD Center, School of Mechanical Science and Engineering, HuaZhong University of Science and Technology, Wuhan, Hubei, 430074, PR China |
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Abstract: | Presented in the paper is a novel tool path generation method for 3-axis NC machining of compound surfaces. Tool path generation
procedure consists of two core steps: firstly, the extended cut region (ECR) of every surface is constructed; secondly, CL-curves
are computed on every ECR and the final tool paths are achieved by sorting, trimming and connecting the CL-curves. The developed
ECR method can solve the gouging problems caused by tangent discontinuity, surface overlap or surface gap among surface elements.
The proposed method has been implemented and applied to tool path generation in a general CAM system that has been developed
by authors. Our case study has demonstrated the validity of the proposed algorithms. |
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Keywords: | NC machining Gouging Compound surfaces Tool path generation |
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