五轴数控机床后置处理开发及奇异点规避
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摘要
机床后处理开发是数控加工技术的关键问题之一,五轴机床运动过程中可能出现的奇异点及其对加工造成的影响在后处理开发过程中极易被忽略。对此,文章基于刚体变换原理,推导了B-C轴式双转台五轴数控机床的运动转换关系,对五轴机床运动可能出现的奇异点现象进行了分析及规避,开发了实验室德玛吉DMU50五轴数控机床专用后置处理文件,经过加工仿真及实验验证,该后置处理对坐标转换计算正确,可以在机床上实际应用,有效的提高了机床的利用效率。
Posrprocessor development is a primary issue for NC machining. Singular configuration is a significant problem occurs with 5-axis movements frequently and may damage the machining quality. This matter is easily be ignored during posrprocessor development. For this, based on rigid motion transformation matrix, this paper matrixs the relationship between workpiece coordinate and cutting tool coordinate for 5-axis machine tool of B-C type. Singular configuration is be analyzed and avoided. A Postprocessor for DMU50 5-axis machineing tool is developped. The Postprocessor is verified by simulation and experiment and can be applied on the machine tool. The utilization efficiency of the DMU50 is improved.
Posrprocessor development is a primary issue for NC machining. Singular configuration is a significant problem occurs with 5-axis movements frequently and may damage the machining quality. This matter is easily be ignored during posrprocessor development. For this, based on rigid motion transformation matrix, this paper matrixs the relationship between workpiece coordinate and cutting tool coordinate for 5-axis machine tool of B-C type. Singular configuration is be analyzed and avoided. A Postprocessor for DMU50 5-axis machineing tool is developped. The Postprocessor is verified by simulation and experiment and can be applied on the machine tool. The utilization efficiency of the DMU50 is improved.
引文
[1] R S Lee,C H She.Developing a postprocessor for three types of five-axis machine tools[J].International Journal of Advanced Manufacturing Technology,1997,13(9):658-665.
[2] 张磊.UG NX6后处理技术培训教程[M].北京:清华大学出版社,2009.
[3] 石勇,刘文涛,廖江.DMU50 eVolution非正交五轴机床的后置处理研究[J].机械设计,2012,29(2):8-10.
[4] Knut S?rby.Inverse kinematics of five-axis machines near singular configurations[J].International Journal of Machine Tools & Manufacture,2007,47(2):299-306.
[5] R J Cripps,B Cross,M Hunt,et al.Singularities in five-axis machining:cause,effect and avoidance[J].International Journal of Machine Tools & Manufacture,DOI:10.1016/j.ijmachtools.2016.12.002.
[6] Shigehiko Sakamoto,Ichiro Inasaki.Analysis of Generating Motion for Five-Axis Machining Centers[J].Transactions of the Japan Society of Mechanical Engineers C,1993,561 (59):1553-1559.
[7] 韩向利,袁哲俊,焦建斌.五坐标机床后置处理方法的研究[J].组合机床与自动化加工技术,1995(3):34-37.
[8] 周续,张定华,吴宝海,等.非正交双转台五轴机床后置处理通用方法[J].机械工程学报,2014,50(15):198-204.
[9] 李立军,孙伟.基于UGNX6.0的海德汉双转台五轴后处理研究[J].机床与液压,2014,42(10):122-125.
[10] 李铁钢.基于Edgecam的五轴机床后处理研究[J].机床与液压,2014,42(20):4-6.
[11] 郝巧梅,江洁.基于MasterCAM双摆台五轴后处理的定制及仿真验证[J].制造技术与机床,2015(4):176-179.
[12] 韩俊峰,周奎,宋翔宇,等.车铣复合机床运动及其五轴联动时后处理算法研究[J].机械研究与应用,2017(6):87-89.
[13] 王妮娜.五轴小型数控铣床开放式控制系统及后处理开发[D].西安:西安理工大学,2018
[2] 张磊.UG NX6后处理技术培训教程[M].北京:清华大学出版社,2009.
[3] 石勇,刘文涛,廖江.DMU50 eVolution非正交五轴机床的后置处理研究[J].机械设计,2012,29(2):8-10.
[4] Knut S?rby.Inverse kinematics of five-axis machines near singular configurations[J].International Journal of Machine Tools & Manufacture,2007,47(2):299-306.
[5] R J Cripps,B Cross,M Hunt,et al.Singularities in five-axis machining:cause,effect and avoidance[J].International Journal of Machine Tools & Manufacture,DOI:10.1016/j.ijmachtools.2016.12.002.
[6] Shigehiko Sakamoto,Ichiro Inasaki.Analysis of Generating Motion for Five-Axis Machining Centers[J].Transactions of the Japan Society of Mechanical Engineers C,1993,561 (59):1553-1559.
[7] 韩向利,袁哲俊,焦建斌.五坐标机床后置处理方法的研究[J].组合机床与自动化加工技术,1995(3):34-37.
[8] 周续,张定华,吴宝海,等.非正交双转台五轴机床后置处理通用方法[J].机械工程学报,2014,50(15):198-204.
[9] 李立军,孙伟.基于UGNX6.0的海德汉双转台五轴后处理研究[J].机床与液压,2014,42(10):122-125.
[10] 李铁钢.基于Edgecam的五轴机床后处理研究[J].机床与液压,2014,42(20):4-6.
[11] 郝巧梅,江洁.基于MasterCAM双摆台五轴后处理的定制及仿真验证[J].制造技术与机床,2015(4):176-179.
[12] 韩俊峰,周奎,宋翔宇,等.车铣复合机床运动及其五轴联动时后处理算法研究[J].机械研究与应用,2017(6):87-89.
[13] 王妮娜.五轴小型数控铣床开放式控制系统及后处理开发[D].西安:西安理工大学,2018