光学自由曲面加工机床换刀误差辨识与补偿机制研究
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摘要
为了达到光学自由曲面加工机床的精度要求,进行机床快刀伺服系统换刀误差的辨识与补偿。首先对机床快刀换刀误差进行理论分析,得到其对加工成形点的影响。再对快刀系统进行几何建模以及刀具轨迹建模,从而进行工件表面微观形貌预测,得到换刀误差影响规律,进而设计检测方案以及换刀误差补偿方案。通过在matlab中进行换刀误差加工补偿建模,得到补偿后面型PV值为0.04μm,补偿效果良好。
In order to meet the accuracy requirements of optical free-form surface machining tools, the tool change error of the fast tool servo system is identified and compensated. The theoretical analysis of the tool change error of the machine tool is carried out, and the influence on the forming point is obtained. The geometric modeling and tool path modeling of the fast knife system are carried out to predict the surface topography of the workpiece, and the influence law of the tool change error is obtained. The design scheme and the tool change error compensation scheme are designed.By performing the tool change compensation modeling in the Matlab, the compensated back type PV value is 0.04, and the compensation effect is good.
In order to meet the accuracy requirements of optical free-form surface machining tools, the tool change error of the fast tool servo system is identified and compensated. The theoretical analysis of the tool change error of the machine tool is carried out, and the influence on the forming point is obtained. The geometric modeling and tool path modeling of the fast knife system are carried out to predict the surface topography of the workpiece, and the influence law of the tool change error is obtained. The design scheme and the tool change error compensation scheme are designed.By performing the tool change compensation modeling in the Matlab, the compensated back type PV value is 0.04, and the compensation effect is good.
引文
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[7]田欣,丁辉,程凯.光学自由曲面机床检测系统静态几何误差快速辨识方法研究[J].航空精密制造技术,2018,54(03):11-15.
[8]李圣怡.精密和超精密机床精度建模技术[M].长沙:国防科技大学出版社, 2008
[9]-尹自强.超精密直线度测量及表面微观形貌分析研究[D].国防科学技术大学, 2003
[2]李建广,张利,王扬,李志慧.数控机床在线测量技术研究[J].航空制造技术,2014(13):38-42
[3]李荣彬,杜雪,张志辉.超精密自由曲面光学设计加工及测量技术[M].北京:机械工业出版社,2015:132-136
[4]Lasemi A, Xue D, Gu P. Recent development in CNC machining of freeform surfaces:A state-of-the-art review. Computer-Aided Design, 2010, 42(7):641-654
[5]陈巧巧.浅谈数控机床在线测量技术[J].计量与测试技术,2012,39(06):37-39
[6]张英杰,韩庆瑶,贾桂红.现代数控系统的特点和发展趋势[J].中国制造业信息化,2004(09):106-108
[7]田欣,丁辉,程凯.光学自由曲面机床检测系统静态几何误差快速辨识方法研究[J].航空精密制造技术,2018,54(03):11-15.
[8]李圣怡.精密和超精密机床精度建模技术[M].长沙:国防科技大学出版社, 2008
[9]-尹自强.超精密直线度测量及表面微观形貌分析研究[D].国防科学技术大学, 2003