刀具坐标系铣削力建模及系数识别方法
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摘要
切削力模型可以计算切削过程的切削力,是预测加工状态、优化加工参数的依据。传统的切削力预测模型都是针对工件坐标系建立的,然而在研究薄壁件多轴加工让刀变形、振动以及刀具磨损等问题时,基于刀具坐标系的切削力表示方式更为直观。为了预测刀具坐标系的切削力,在传统机械切削力模型的基础上,提出了刀具坐标系铣削力预测模型,并提出了基于刀具坐标系测量结果的切削力系数标定方法,最后通过实验验证了所提出的切削力预测模型和切削力系数标定方法,实验结果表明所提出的切削力模型能够准确地预测实际加工中的切削力。
The cutting force can be calculated by cutting forces model,and it is the basis of predicting cutting state and optimizing machining parameters. The traditional cutting force model is based on the workpiece coordinate system. However,the way the cutting force expressed in tool coordinate system is more intuitive and effective when the research is machining deformation and vibration of thin-walled part or tool wear in multi-axis machining. On the basis of the traditional mechanical cutting force prediction model,the cutting force model of the tool coordinate system was proposed to predict the cutting force in tool coordinate system,and the cutting force coefficients calibration method based on tool coordinate system was proposed. Finally,the method of cutting force prediction model and cutting force coefficients prediction method are verified by experiments. The results show that the cutting force model proposed can accurately predict the cutting force in actual machining.
The cutting force can be calculated by cutting forces model,and it is the basis of predicting cutting state and optimizing machining parameters. The traditional cutting force model is based on the workpiece coordinate system. However,the way the cutting force expressed in tool coordinate system is more intuitive and effective when the research is machining deformation and vibration of thin-walled part or tool wear in multi-axis machining. On the basis of the traditional mechanical cutting force prediction model,the cutting force model of the tool coordinate system was proposed to predict the cutting force in tool coordinate system,and the cutting force coefficients calibration method based on tool coordinate system was proposed. Finally,the method of cutting force prediction model and cutting force coefficients prediction method are verified by experiments. The results show that the cutting force model proposed can accurately predict the cutting force in actual machining.
引文
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[7]魏效玲,王剑锋.基于DEFORM的刀具几何参数与切削力关系的研究[J].组合机床与自动化加工技术,2014(11):11-13.
[8]罗智文,赵文祥,焦黎,等.基于斜角切削的曲线端铣切削力建模[J].机械工程学报,2016,52(9):184-192.
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[10]刘璨,吴敬权,刘焕牢,等.平底立铣刀的切削力尺寸效应研究及其系数估算[J].机械工程学报,2017(13):199-208.
[11]闫蓉,邱锋,彭芳瑜,等.螺旋立铣刀正交车铣轴类零件切削力建模分析[J].华中科技大学学报(自然科学版),2014(5):1-5.
[12]何晓群,闵素芹.实用回归分析[M].北京:高等教育出版社,2008.
[2]陈志同,张保国.面向单元切削过程的切削参数优化模型[J].机械工程学报,2009,45(5):230-236.
[3]段鹏,焦锋,赵波,等.激光超声复合加工硬质合金的切削力理论与试验[J].现代制造工程,2017(11):9-14,35.
[4] ALTINTAS Y,LEE P. A general mechanics and dynamics model for helical end mills[J]. CIRP Annals-Manufacturing Technology,1996,45(1):59-64.
[5] BUDAK E,ALTINTAS Y,ARMAREGE E J A. Prediction of Milling Force Coefficients From Orthogonal Cutting Data[J].Journal of Engineering for Industry,1996,118(2):216-224.
[6]岳彩旭,高海宁,刘献礼.基于动态切削力系数的插铣加工过程稳定性研究[J].机械工程学报,2017,53(17):193-201.
[7]魏效玲,王剑锋.基于DEFORM的刀具几何参数与切削力关系的研究[J].组合机床与自动化加工技术,2014(11):11-13.
[8]罗智文,赵文祥,焦黎,等.基于斜角切削的曲线端铣切削力建模[J].机械工程学报,2016,52(9):184-192.
[9]翁泽宇,彭伟,贺兴书.确定三维切削动态切削力系数的新方法[J].东南大学学报(自然科学版),2003,33(3):319-323.
[10]刘璨,吴敬权,刘焕牢,等.平底立铣刀的切削力尺寸效应研究及其系数估算[J].机械工程学报,2017(13):199-208.
[11]闫蓉,邱锋,彭芳瑜,等.螺旋立铣刀正交车铣轴类零件切削力建模分析[J].华中科技大学学报(自然科学版),2014(5):1-5.
[12]何晓群,闵素芹.实用回归分析[M].北京:高等教育出版社,2008.