| 引用本文: | 徐新阳,李建刚,成群林.基于CPAC的非圆磨削数控系统的开发[J].哈尔滨工业大学学报,2014,46(11):123.DOI:10.11918/j.issn.0367-6234.2014.11.021 |
| XU Xinyang,LI Jiangang,CHENG Qunlin.Development of NC system for non-circular grinding based on CPAC[J].Journal of Harbin Institute of Technology,2014,46(11):123.DOI:10.11918/j.issn.0367-6234.2014.11.021 |
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| 摘要: |
| 为解决非圆磨削系统中工艺不足的问题,提出在CPAC(computer programmable automation controller)控制器平台上开发一套非圆磨削数控系统．以分段三次样条曲线拟合为数学基础,介绍X-Y加工方式下刀心轨迹坐标计算;介绍非圆磨削中恒速磨削的重要性,以等弧长密化插值为原则,提出两种实现恒速磨削的方法;介绍非圆磨削加工中的误差测量方法,并进行误差补偿;最后,集成了系统并在三轴龙门铣床进行加工,实验证明系统满足非圆磨削的需要． |
| 关键词: 非圆磨削 恒速磨削 误差补偿 |
| DOI：10.11918/j.issn.0367-6234.2014.11.021 |
| 分类号:TG595 |
| 基金项目: |
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| Development of NC system for non-circular grinding based on CPAC |
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XU Xinyang1, LI Jiangang2, CHENG Qunlin1
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(1. Shanghai Spaceflight Precision Machinery Institute, 201600 Shanghai, China; 2. Shenzhen Graduate School, Harbin Institute of Technology, 518055 Shenzhen, China)
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| Abstract: |
| To promote the defective craft in non-circular grinding NC system, a special NC system for non-circular grinding is presented based on CPAC. First, on the basis of piecewise cubic spline fitting as mathematical foundation, the cutter center coordinates of X-Y is calculated. Second, the importance of constant speed grinding is produced, and two algorithms based on constant length of arc interpolation are put forward to realize constant speed grinding. Third, the method of error measuring and compensation is given. Finally, integrated system is completed and applied to three-axis milling machine. The experiment proves that the system can meet the needs of non-circular grinding. |
| Key words: non-circular grinding, constant speed grinding, error compensation |
