《机电工程》杂志,月刊( 详细... )
中国标准连续出版物号: ISSN 1001-4551 CN 33-1088/TH
主办单位:浙江省机电集团有限公司
浙江大学
主编:陈 晓
副 主 编:唐任仲、罗向阳(执行主编)
总 经 理:罗向阳
出 版:浙江《机电工程》杂志社有限公司
地 址:杭州市上城区延安路95号浙江省机电集团大楼二楼211、212室
电话Tel:+86-571-87041360、87239525
E-mail:meem_contribute@163.com
国外发行:中国国际图书贸易总公司
订阅:全国各地邮局 国外代号:M3135
国内发行:浙江省报刊发行局
邮发代号:32-68
广告发布登记证:杭上市管广发G-001号
在线杂志 |
当前位置: 机电工程 >>在线杂志 |
等流量柱塞泵凸轮轮廓的最小二乘法数控编程
作者:田国华1,2,欧长劲1 日期:2009-08-18/span> 浏览:4095 查看PDF文档
等流量柱塞泵凸轮轮廓的最小二乘法数控编程
田国华1,2,欧长劲1
(1.浙江工业大学 机械工程学院,浙江 杭州 310014; 2.浙江广播电视大学 萧山学院,浙江 杭州 311200)
摘要:针对等流量柱塞泵凸轮轮廓运动规律复杂、加工编程要求高的状况,提出了对轮廓曲线进行最小二乘法拟合与数控编程的方法。首先根据凸轮运动规律按等间隔参数法对凸轮曲线进行了分段离散,对离散点用最小二乘法拟合出凸轮的第一段圆弧;再根据所计算的拟合圆与凸轮曲线的偏差用最小二乘法拟合以得到其余各圆弧段;最终完成了整个轮廓拟合及数控编程。研究结果表明,用该方法进行等流量柱塞泵凸轮的数控编程,拟合圆弧段少、光顺性好,避免了在数控加工时产生振动,可提高加工质量。
关键词:恒定流量;最小二乘法;凸轮轮廓;圆弧拟合
中图分类号:TG580.6文献标识码:A文章编号:1001-4551(2009)07-0040-03
NC programming of cam profile curves of constant flow pump by least squares
TIAN Guohua1,2 , OU Changjin1
(1.College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, China;
2.Xiaoshan College, Zhejiang Radio & TV University, Hangzhou 311200, China)
Abstract: Aiming at a complex movement and high request, a method of least squares fitting in NC programming was presented for the cam profile curves in constant flow pump. First of all, according to the laws of cam movement, the subdiscrete of cam profile curves was done by interval parameter and the discrete points were fitted into the first arc by using least squares method. Then fitting the deviation in calculated fitting circle and cam profile curves, the remaining arcs were gotten. Finally the whole circle fitting and NC programming were realized. The results indicate that by this means for constant flow pump cam NC programming, the less fitting arcs are need and higher smoothing face is gotten, the vibrations generated when the CNC machining are avoided and processing quality is improved.
Key words: constant flow; least squares fit; cam profile curves; imminent circle
参考文献(References):
[1]孟莉,刘媛,王金泉.自动编程与手工编程探讨[J].现代制造工程,2006(8):30-32.
[2]刘雄伟.数控加工理论与编程技术[M].1版.北京:机械工业出版社,2001.
[3]王爱玲,张吉唐,吴雁.现代数控原理及控制系统[M].1版.北京:国防工业出版社,2002.
[4]邱义,田中旭,马雷.等流量柱塞泵凸轮轮廓曲线的解析设计[J].机床与液压,2006(10):83-85.
[5]严慧敏,何炳蔚.机械零件二维几何尺寸和形状检测系统研究与开发[J].机械,2008,35(10):70-72.
[6]四川省机械工业局.齿轮刀具设计理论基础(上册)[M].北京:机械工业出版社,1982.
[7]王志平.机床数控技术应用[M].北京:高等教育出版社,1998.
友情链接