Chatter Stability in Turning and Milling with in Process Identified Process Damping
Chatter Stability in Turning and Milling with in Process Identified Process Damping
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DOI：
10.1299/jamdsm.4.1107
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发表时间：
2010
影响因子：
0.9
通讯作者：
Y. Kurata;S. D. Merdol;Y. Altintas;N. Suzuki;E. Shamoto
中科院分区：
文献类型：
--
作者：
Y. Kurata;S. D. Merdol;Y. Altintas;N. Suzuki;E. Shamoto
金属切削中的过程阻尼是由切削刀具的后刀面与波状表面光洁度之间的接触引起的，众所周知，这可以抑制颤振。早期研究中已经开发并验证了具有过程阻尼的分析模型，其中阻尼系数被认为与振动和切削速度之比成正比。本文介绍了从切削试验中得出的过程阻尼力系数的过程识别。当刀具减小圆柱形工件的直径时，切入车削可不断降低切削速度。当颤振在临界切削速度处停止时，过程阻尼系数通过稳定律的逆解来估计。结果表明，由确定的过程阻尼系数构建的稳定性波瓣与车削和铣削中进行的实验一致。
Process damping in metal cutting is caused by the contact between the flank face of the cutting tool and the wavy surface finish, which is known to damp chatter vibrations. An analytical model with process damping has already been developed and verified in earlier research, in which the damping coefficient is considered to be proportional to the ratio of vibration and cutting velocities. This paper presents in process identification of the process damping force coefficient derived from cutting tests. Plunge turning is used to create a continuous reduction in cutting speed as the tool reduces the diameter of a cylindrical workpiece. When chatter stops at a critical cutting speed, the process damping coefficient is estimated by inverse solution of the stability law. It is shown that the stability lobes constructed by the identified process damping coefficient agrees with experiments conducted in both turning and milling.