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Research on transfer control strategy in CNC high-speed and high-accuracy machining
Feed rate has always been one of the most important indicators for CNC performance, while transfer velocity between two adjacent segments pays a key role in improving feed rate. Since the contour of a special part commonly consists of line and arc segments (non-micro segments), as well as continuous micro line segments (micro segments) so there should be different methods to deal with their transfer velocity, respectively. In this paper, a new two-pass algorithm is proposed to find the optimal transfer velocity for micro segments. The theory of machining links and several constraints are developed to drive the algorithm. Then, a vector transfer algorithm is generated to realize transfer for non-micro segments, the generated algorithm is based on s-curve and added to a new optimization algorithm to constrain the velocity, acceleration and jerk at the turning corner. Finally, several examples are presented to illustrate the application of above two algorithms.
Research on transfer control strategy in CNC high-speed and high-accuracy machining
Feed rate has always been one of the most important indicators for CNC performance, while transfer velocity between two adjacent segments pays a key role in improving feed rate. Since the contour of a special part commonly consists of line and arc segments (non-micro segments), as well as continuous micro line segments (micro segments) so there should be different methods to deal with their transfer velocity, respectively. In this paper, a new two-pass algorithm is proposed to find the optimal transfer velocity for micro segments. The theory of machining links and several constraints are developed to drive the algorithm. Then, a vector transfer algorithm is generated to realize transfer for non-micro segments, the generated algorithm is based on s-curve and added to a new optimization algorithm to constrain the velocity, acceleration and jerk at the turning corner. Finally, several examples are presented to illustrate the application of above two algorithms.
Research on transfer control strategy in CNC high-speed and high-accuracy machining
Zhenzhen Shi, (author) / Ruifeng Guo, (author) / Peinan Li, (author) / Yongtao Ma, (author) / Wanfu Ding, (author)
2009-11-01
118304 byte
Conference paper
Electronic Resource
English
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