Machine Tool Chatter Suppression by Multi-Level Random Spindle Speed Variation

2002 ◽  
Vol 124 (2) ◽  
pp. 208-216 ◽  
Author(s):  
Alpay Yilmaz ◽  
Emad AL-Regib ◽  
Jun Ni
Keyword(s):  
Spindle Speed ◽  
New Method ◽  
Spindle System ◽  
Speed Variation ◽  
Chatter Suppression ◽  
Random Fashion ◽  
Spindle Speed Variation ◽  
Machine Tool Chatter ◽  
Multi Level ◽  
The Stability

This paper presents a new method for varying the spindle speed to suppress chatter in machining. The spindle speed is varied in a pseudo-random fashion within the bandwidth of the spindle system. Both implementation issues and spindle system responses to such signals are investigated. A new method to analyze the stability of machining systems with varying spindle speed is also introduced. The effectiveness and advantages of the random spindle speed variation in chatter suppression is verified using numerical simulations and experiments.

Machine-Tool Chatter Suppression by Multi-Level Random Spindle Speed Variation

1999 ◽  
Author(s):  
Alpay Yilmaz ◽  
Emad AL-Regib ◽  
Jun Ni
Keyword(s):  
Spindle Speed ◽  
New Method ◽  
Spindle System ◽  
Speed Variation ◽  
Chatter Suppression ◽  
Random Fashion ◽  
Spindle Speed Variation ◽  
Machine Tool Chatter ◽  
Multi Level ◽  
The Stability

Abstract This paper presents a new method for varying the spindle speed to suppress chatter in machining. The spindle speed is varied in pseudo-random fashion within the bandwidth of the spindle system. Both implementation issues and spindle system responses to such signals are investigated. A new method to analyze the stability of machining systems with varying spindle speed is also introduced. The effectiveness and advantages of the random spindle speed variation in chatter suppression is verified using numerical simulations and experiments.

Simulation for Sinusoidal Spindle Speed Variation Cutting in Time Domain Based on Simulink

2011 ◽  
Vol 188 ◽  
pp. 549-554
Author(s):  
Kuan Min Mao ◽  
Min Zhang ◽  
Ming Zhu ◽  
Ling Yin
Keyword(s):  
Time Domain ◽  
Amplitude Ratio ◽  
Block Diagram ◽  
Spindle Speed ◽  
Chatter Vibration ◽  
Speed Variation ◽  
Chatter Suppression ◽  
Spindle Speed Variation ◽  
Machine Tool Chatter ◽  
Nonlinear Mechanical

This paper presents a simulink block diagram which is constructed on the basis of a classical nonlinear mechanical model of machine tool chatter vibration. With varying amplitude ratio and frequency ,sinusoidal spindle speed variation (S3V) cutting process is investigated in time domain, which tests and verifies the feasibility of chatter suppression by S3V method.

scholarly journals Control of Chatter by Spindle Speed Variation in High-Speed Milling

2010 ◽  
Vol 112 ◽  
pp. 179-186 ◽  
Author(s):  
Sébastien Seguy ◽  
Gilles Dessein ◽  
Lionel Arnaud ◽  
Tamás Insperger
Keyword(s):  
High Speed ◽  
Spindle Speed ◽  
High Speed Milling ◽  
Speed Variation ◽  
Milling Operations ◽  
Spindle Speed Variation ◽  
Machine Tool Chatter ◽  
Parametric Studies ◽  
Sinusoidal Shape ◽  
The Stability

High-speed milling operations are often limited by regenerative vibrations. The aim of this paper is to analyze the effect of spindle speed variation on machine tool chatter in high-speed milling. The stability analysis of triangular and sinusoidal shape variations is made numerically with the semi-discretization method. Parametric studies show also the influence of the frequency and amplitude variation parameters. This modeling is validated experimentally by variable spindle speed cutting tests with a triangular shape. Stable and unstable tests are analyzed in term of amplitude vibration and surface roughness degradation. This work reveals that stability must be considered at period variation scale. It is also shown that spindle speed variation can be efficiently used to suppress chatter in the flip lobe area.

The Effect of Spindle Speed Variation on Chatter Suppression in Rotating-Tool Machining

2006 ◽  
Vol 505-507 ◽  
pp. 859-864 ◽  
Author(s):  
Chen Jung Li ◽  
A.G. Ulsoy ◽  
W.J. Endres
Keyword(s):  
Spindle Speed ◽  
System Stability ◽  
Constant Delay ◽  
Machining Processes ◽  
Speed Variation ◽  
Chatter Suppression ◽  
Spindle Speed Variation ◽  
Common Process ◽  
The Stability ◽  
Stability Limits

Spindle speed variation (SSV) is one of a number of promising strategies to suppress chatter. Most previous research on SSV stability analysis for nonintermittent machining processes has focused on stationary-bar boring or turning. However, nonintermittent rotating-tool machining is also a common process. This paper investigates the effect of SSV in nonintermittent rotating-tool machining, using rotating-bar boring as an example. This paper takes advantage of the rotating-frame approach and the resulting constant delay in the angle domain to investigate the SSV effect on system stability for rotating-bar boring. The results show that the SSV effect on rotating-bar boring flattens the stability lobes and lifts the tangential stability limits.

Effiziente Ermittlung von Stabilitätsgrenzen*/Detection of stability boundaries during milling

2017 ◽  
Vol 107 (05) ◽  
pp. 313-317
Author(s):  
C. Prof. Brecher ◽  
P. Chavan ◽  
A. Epple
Keyword(s):  
Stability Boundary ◽  
Spindle Speed ◽  
Wird Eine ◽  
Chatter Detection ◽  
Speed Variation ◽  
Spindle Speed Variation ◽  
Detection Software ◽  
The Stability ◽  
Stability Limits

Um Stabilitätskarten für Fräsprozesse effizient zu erstellen, bietet sich eine kontinuierliche Variation der Drehzahl an. Jedoch kann die permanente Änderung der Drehzahl zu einer Verfälschung der tatsächlichen Stabilitätsgrenzen führen. Dieser Fachbeitrag analysiert den Einfluss der Spindeldrehzahlvariation auf die Stabilitätsgrenzen bei Fräsversuchen mit verschiedenen Drehzahlbeschleunigungen. Für das Erkennen der Stabilitätsübergänge wird eine Rattererkennungssoftware eingesetzt.   Milling with varying spindle speed allows an efficient determination of instabilities. However, spindle speed variation may also influence the actual stability boundary with constant spindle speed. This paper analyzes the influence of spindle speed variation on the stability limits by evaluating milling trials at different spindle accelerations. For the detection of instability and stability during cutting trials, a time-domain chatter detection software was enhanced, validated and implemented.

Simulation and Experimental Research on Chatter Suppression Using Chaotic Spindle Speed Variation

2011 ◽  
Vol 133 (1) ◽  
Author(s):  
Kong Fansen ◽  
Liu Peng ◽  
Zhao Xingang
Keyword(s):  
Experimental Methods ◽  
Chaotic Signal ◽  
Spindle Speed ◽  
Speed Variation ◽  
Chatter Suppression ◽  
Spindle Speed Variation ◽  
Cutting Chatter ◽  
Chatter Control ◽  
Suppression Process ◽  
Chaotic Codes

A method for varying the spindle speed using chaotic signal to suppress chatter in machining is developed. The effects of spindle speed variation on cutting chatter control between using chaotic and sinusoidal signals were analyzed by simulation and experimental methods. Various chaotic codes are used in the chatter suppression process, and it is found that LORENZ-1 code results in the smallest machine noise.

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