Real-time look-ahead feedrate planning algorithm of short line segment based on planning unit

被引：0
作者：
Zhang Y. [1 ]
Ye P. [1 ,2 ]
Tang J. [1 ]
Zhang H. [1 ,2 ]
机构：
[1] Department of Mechanical Engineering, Tsinghua University, Beijing
[2] Beijing Key Lab of Precision/Ultra-precision Manufacturing Equipment and Control, Tsinghua University, Beijing
来源：
Ye, Peiqing (pqye@outlook.com) | 1600年 / CIMS卷 / 23期
关键词：
Computer numerical control system; Feedrate planning; Planning unit; Real-time look-ahead; Short line segment;
D O I：
10.13196/j.cims.2017.11.017
中图分类号：
学科分类号：
摘要：
To improve the efficiency of feedrate planning algorithm and to deal with the cross-segment interpolation problem, the planning unit which contained some short line segments was proposed. According to the velocity constraints of planning unit's each control points such as acceleration constraint, error constraint and cross-segment interpolation constraint, the feedrate and end-position velocity of planning unit were calculated. To realize the continuous machining of short line segments, a real-time look-ahead algorithm was present, and a look-ahead buffer was established to store the pre-reading planning unit. The feedrate backtracking algorithm was utilized to guarantee the continuity of feedrate and to reduce feedrate fluctuation. The real-time look-ahead feedrate planning algorithm of short line segment was applied in CNC milling for tooth restoration, and the result showed that the proposed algorithm could satisfied the manufacturing requirements for high feedrate and accurate tooth restoration. © 2017, Editorial Department of CIMS. All right reserved.
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页码：2483 / 2490
页数：7
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