一种曲线路径剪裁中刀具形变及其误差分析
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摘要
动态移动切削阻力载荷对高速数控裁床加工过程中刀具形变及其剪裁误差具有的重要影响,提出了一种适用多层布料/皮革曲线剪裁路径的刀具形变及其误差计算方法;建立了动态负载条件下可伸缩刀具的挠度与转角方程,进而推导出高频振动裁刀剪裁误差及其随切削深度变化规律;计算结果表明,数控布料/皮革剪裁刀的动态载荷、高频振动参数、切削深度对剪裁误差具有重要影响,深入剖析高层数控裁床的加工机理,动态参数数据分析,对于提高机床加工效率,降低加工误差,提高刀具使用寿命具有一定的工程应用价值。
Dynamic cutting resistance of moving load is an important factor affecting the tool deformation during operation of high-layer CNC cutting machine.A tool deformation and error calculation method that is suitable to the multi-layer clothing/leather cutting in curve path was proposed.And deflection and rotating angle equation were established under the condition of dynamic load,and thus we can deduce the cutting error of the machine tool with high-frequency vibration and its change rule correlated with cutting depth.The calculation result reveals that factors of dynamic load,High frequency vibration parameters,and cutting depth have strong influence on the cutting error.Deeply research on machining mechanism and dynamic parameters analysis of the high-layer CNC cutting machine has certain engineering application value in improving work efficiency,reducing machining error,and prolonging service life of cutting tools.
Dynamic cutting resistance of moving load is an important factor affecting the tool deformation during operation of high-layer CNC cutting machine.A tool deformation and error calculation method that is suitable to the multi-layer clothing/leather cutting in curve path was proposed.And deflection and rotating angle equation were established under the condition of dynamic load,and thus we can deduce the cutting error of the machine tool with high-frequency vibration and its change rule correlated with cutting depth.The calculation result reveals that factors of dynamic load,High frequency vibration parameters,and cutting depth have strong influence on the cutting error.Deeply research on machining mechanism and dynamic parameters analysis of the high-layer CNC cutting machine has certain engineering application value in improving work efficiency,reducing machining error,and prolonging service life of cutting tools.
引文
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[2]项贤军,茹秋生.裁床裁剪复杂形状速度控制研究[J].制造业自动化,2014(9):56-58+67.
[3]王雷,李文斌.数控裁剪机伺服进给系统动态联合仿真[J].制造业自动化,2013(8):139-141.
[4]盛猛.多层皮革高速裁剪机伺服进给系统多目标优化[D].杭州:浙江工业大学,2012.
[5]伍乾坤,韩旭,胡德安.一种脆性材料动态本构损伤参数的计算反求方法[J].固体力学学报,2011(3):242-248.
[6]马卫华,宋荣荣,揭长安等.缓冲器阻抗特性对重载列车动力学性能的影响[J].交通运输工程学报,2011(2):59-64.
[7]吕永桂,魏燕定,陈子辰.空间两连杆柔性构件弯扭耦合振动主动控制[J].浙江大学学报(工学版),2007(5):715-719.
[8]颜潇潇,童根树,张磊.斜加劲梁柱节点翘曲传递分析[J].浙江大学学报(工学版),2006(1):85-91.
[9]周磊,罗禹贡,杨殿阁,等.混联式混合动力车多能源动力控制系统的开发[J].机械工程学报,2007(4):125-131.