constant toolpath generation in NC machining
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摘要: 针对高质量的等高线高速加工要求,设计并实现了数控加工中、根据刀位面及其Zmap模型计算等高线刀具轨迹的原理和算法.该算法充分考虑了刀位面Zmap模型的特点,能确保刀具轨迹始终处于顺铣状态,从而保证了良好的加工工艺性.算法稳定性好,计算速度快,并已在商品化软件CAXA-ME中成功实现.Abstract: Appealed by high-speed Z -constant machining with high quality, an algorithm of generating Z -constant toolpath in NC machining was presented based on the cutter location surface and its Zmap model. It suggests guarantees that the toolpath of climb cutting can be obtained in consideration of the cutter location surface Zmap model features, thus to gain a qualitied surface. This method was realized successfully in business software:CAXA-ME,which with satisfying computing speed and stability.
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Key words:
- cutting tools /
- paths /
- numerically controlled machining /
- cutter location surface /
- climb cutting
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[1] Chen Y, Ravani B. Offset surface generation and contouring in computer aided design[J] Journal of Mechanisms Transmissions & Automation in Design, 1987, 109(1):133~142 [2] Lee K, Kim T J, Hong S E. Generation of toolpath with selection of proper tools for rough cutting process[J] CAD, 1994, 26(11):822~831 [3] Lee Y S, Chang T C. A contour growth method form intersections of hunting planes to evaluate machining information[J] Journal of Design & Manufacturing, 1992, 2(3):119~133 [4] Lee Y S, Chang T C. CASCAM——an automated system for sculptured surface cavity machining[J] Computers in Industry, 1991,16:321~342 [5] Saito T, Takahashi T. NC machining with G-buffer method[J] Computer Graphics, 1991, 25(4):207~216 [6] Choi B K, Jerard R B. Sculptured surface maching theory and applications[M] Kluwer Academic Publishers, 1998 [7] Chiou C J, Lee Y S. A shape-generating approach for multi-axis machining G-buffer models[J] CAD, 1999,31(12):761~776 [8] Austin S P, Jerard R B, Drysdalet R L. Comparison of discretization algorithms for NURBS surfaces with application to numerically controlled machining . CAD,1997,29(1):71~83 [9] 姚承 艹 弗 . Bzier曲面的自适应细分和三角化的四叉树方法[J] 计算辅助设计与图形学学报, 1992,4:1~8 Yao Chengfu. The method of discreting and triangling for Bezier surface[J] Journal of Computer Aided Design and Computer Graphics, 1992,4:1~8(in Chinese) [10] 张 莉.多张复杂曲面零件连续加工的刀位计算方法与实现[J] 航空工艺技术,1995,3:9~12 Zhang Li. Implementation and computation toolpath for complicated multi-surface[J] Aeronautics Manufacturing Technology, 1995,3:9~12(in Chinese) [11] 冉瑞江, 王亚平, 唐荣锡. 截面线法数控加工刀位轨迹的生成算法 . 1993 Ran Ruijiang, Wang Yaping, Tang Rongxi. Generation toolpath for plane cut in NC machining . 1993(in Chinese) [12] 闫光荣. 基于留量模型的数控加工 . 北京:北京航空航天大学机械工程及自动化学院, 2001 Yan Guangrong. NC machining based on stock-remaining model . Beijing:School of Mechanical Engineering and Automation,Beijing University of Aeronautics and Astronautics, 2001(in Chinese)
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