scholarly journals On the Dynamic Behavior of Machine Tool Slideway : 2nd Report, Characteristics of Kinetic Friction in "Stick Slip" Motion

1970 ◽  
Vol 13 (55) ◽  
pp. 180-188 ◽  
Author(s):  
Shinobu KATO ◽  
Katsumi YAMAGUCHI ◽  
Tsuneo MATSUMAYASHI
Keyword(s):  
Machine Tool ◽  
Dynamic Behavior ◽  
Kinetic Friction ◽  
Stick Slip ◽  
Stick Slip Motion ◽  
Slip Motion

Stick-Slip Motion of Machine Tool Slideway

1974 ◽  
Vol 96 (2) ◽  
pp. 557-566 ◽  
Author(s):  
S. Kato ◽  
K. Yamaguchi ◽  
T. Matsubayashi
Keyword(s):  
Boundary Conditions ◽  
Machine Tool ◽  
Static Friction ◽  
Experimental Results ◽  
Kinetic Friction ◽  
Stick Slip ◽  
Frictional Coefficients ◽  
Stick Slip Motion ◽  
Slip Motion

Stick-slip motion of a moving element on an actual machine tool slideway is investigated experimentally under various sliding conditions, and the fundamental characteristics of the stick-slip motion are clarified. Based on these experimental results, the characteristics of static friction in the period of stick and kinetic friction in the period of slip are studied concretely so as to clarify the stick-slip process. It is shown experimentally that static and kinetic frictional coefficients can be expressed with simple formulas. Using these expressions, the boundary conditions for occurrence of stick-slip motion are examined, and the relation between properties of the stick-slip motion and frictional characteristics is explained quantitatively.

Experimental Exploration of Schallamach Waves and Self-Excitation in a Belt-Drive System

2018 ◽  
Author(s):  
Yingdan Wu ◽  
Michael Varenberg ◽  
Michael J. Leamy
Keyword(s):  
Angular Velocity ◽  
Dynamic Behavior ◽  
Oscillation Amplitude ◽  
Operating Conditions ◽  
Drive System ◽  
Belt Drive ◽  
Stick Slip ◽  
Stick Slip Motion ◽  
System Inertia ◽  
Slip Motion

We study the dynamic behavior of a belt-drive system to explore the effect of operating conditions and system moment of inertia on the generation of waves of detachment (i.e., Schallamach waves) at the belt-pulley interface. A self-excitation phenomenon is reported in which frictional fluctuations serve as harmonic forcing of the pulley, leading to angular velocity oscillations which grow in time. This behavior depends strongly on operating conditions (torque transmitted and pulley speed) and system inertia, and differs between the driver and driven pulleys. A larger net torque applied to the pulley generally yields more remarkable stick-slip oscillations with higher amplitude and lower frequency. Higher driving speeds accelerate the occurrence of stick-slip motion, but have little influence on the oscillation amplitude. Contrary to our expectations, the introduction of flywheels to increase system inertia amplified the frictional disturbances, and hence the pulley oscillations. This does, however, suggest a way of facilitating their study, which may be useful in follow-on research.

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