Identification and analysis on dynamic characteristic parametersof the plastic-coated guide’s joint

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Journal of Vibration and Shock ›› 2013, Vol. 32 ›› Issue (3) : 95-98.

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Identification and analysis on dynamic characteristic parametersof the plastic-coated guide’s joint

GUO Cheng-long, YUAN Jun-tang, WANG Wei-you, CHEN Zhan-yi, WENG Jian-guang

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Abstract

The plastic-coated guides are often-used function parts on the NC machine tools, and the dynamic characteristic of its joint is of significance to the machining accuracy. The dynamic characteristic parameters of the plastic-coated guide’s joint are identified through modal experiments, then the law of various factors influenced on the parameters are analyzed. The results show that: increasing of the sliding speed will reduce the dynamic stiffness of the joint; increasing the surface pressure and adding lubrication oil will increase the joint’s stiffness; the plastic-coated guide can maintain the stability of dynamic characteristic better than the general metal guide, as the thickness increases of plastic-coat, the dynamic stiffness decreases but the damping increases, it is appropriate at 1.2 to 1.5mm for the plastic-coat in practice.

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Plastic-coated guide / Joint / Damping / PTFE

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GUO Cheng-long;YUAN Jun-tang;WANG Wei-you;CHEN Zhan-yi;WENG Jian-guang . Identification and analysis on dynamic characteristic parametersof the plastic-coated guide’s joint[J]. Journal of Vibration and Shock, 2013, 32(3): 95-98