On-line control of machine tool vibration in turning operation using electro-magneto rheological damper

2018 ◽  
Vol 31 ◽  
pp. 187-198 ◽  
Author(s):  
Rahul Kishore ◽  
Sounak K. Choudhury ◽  
Kashfull Orra
Keyword(s):  
Machine Tool ◽  
Turning Operation ◽  
Tool Vibration ◽  
On Line ◽  
Magneto Rheological

On-line control of machine tool vibration in turning

1997 ◽  
Vol 37 (6) ◽  
pp. 801-811 ◽  
Author(s):  
S.K. Choudhury ◽  
N.N. Goudimenko ◽  
V.A. Kudinov
Keyword(s):  
Machine Tool ◽  
Tool Vibration ◽  
On Line

Active Control Machine Tool Chatter Piezo Ceramic Actuators in Tool Holder Shank

1999 ◽  
Author(s):  
L. Håkansson ◽  
I. Claesson ◽  
L. Pettersson ◽  
T. Lagö
Keyword(s):  
Machine Tool ◽  
Active Control ◽  
Working Environment ◽  
Lms Algorithm ◽  
Turning Operation ◽  
Tool Vibration ◽  
Tool Holder ◽  
Magnetostrictive Actuators ◽  
Physical Features ◽  
New Generation

Abstract In the turning operation chatter or vibration is a frequent problem, which affects the result of the machining, and, in particular, the surface finish. Tool life is also influenced by vibration. Severe acoustic noise in the working environment frequently occurs as a result of dynamic motion between the cutting tool and the workpiece. These problems can be reduced by active control of machine-tool vibration. Adaptive feedback control based on the filtered-x LMS-algorithm, enables a reduction of the vibration by up to 40 dB at 1.5 kHz and by approximately 40 dB at 3 kHz. The active control performed a broadband attenuation of the sound pressure level by up to 35 dB. A significant improvement of the work-piece surface was also observed. In the active control of tool vibration a tool holder construction based on integrated high magnetostrictive actuators was used. However, both the physical features and properties of a active tool holder construction based on high magnetostrictive actuators and the fact that this type of actuators generally have a non-linear behaviour highly reduce its applicability to the general lathe and turning operation. Therefor, a new generation embedded active tool holder shanks based on piezo ceramic actuators have been developed. Based on spectrum estimates, both coherence spectrum and frequency response function estimates has been calculated for both the old tool holder construction and the new generation active tool holder shank. From the results it follows that the phase delay is smaller and the linearity of the new generation active tool holder shank are superior compared to the old technology. It is also obvious that physical features and properties of new generation embedded active tool holder shanks based on piezo ceramic actuators fits the general lathe application.

scholarly journals MACHINE TOOL VIBRATION REDUCTION USING HYDROSTATIC GUIDEWAY

2018 ◽  
Vol 2018 (04) ◽  
pp. 2568-2570
Author(s):  
Tomas Lazak ◽  
Matej Sulitka ◽  
Eduard Stach
Keyword(s):  
Machine Tool ◽  
Vibration Reduction ◽  
Tool Vibration

Analysis of Chatter Vibration Through Step-Function Response

1972 ◽  
Vol 94 (4) ◽  
pp. 985-990
Author(s):  
H. Takeyama ◽  
O. Sakata
Keyword(s):  
Machine Tool ◽  
Step Function ◽  
Response Analysis ◽  
Chatter Vibration ◽  
First Approximation ◽  
Machine Tool Structure ◽  
On Line ◽  
Cutting Zone ◽  
Simple Evaluation ◽  
Cutting System

This paper deals with a challenge to apply the method of indicial response analysis for obtaining the frequency characteristics of total cutting system, tool system, and cutting zone. The feasibility of this method has been verified by simulation tests. Furthermore, linearity in cutting zone has been demonstrated to a first approximation by utilizing the proposed method. As examples of its application, on-line prediction or prevention of chatter vibration and simple evaluation of machine tool structure have been proposed.

A note on machine tool vibration model

2019 ◽  
Author(s):  
Dorociaková Božena ◽  
Olach Rudolf
Keyword(s):  
Machine Tool ◽  
Tool Vibration ◽  
Vibration Model

Dimensional Deviation Affected by Cutting Parameters and Machine Tool Rigidity in Dry Turning of S45C Steel

2013 ◽  
Vol 315 ◽  
pp. 749-754 ◽  
Author(s):  
M.A. Rahman ◽  
A.B. Baharudin ◽  
S. Adi ◽  
Nur Izan Syahriah Hussein ◽  
H. Isa ◽  
...  
Keyword(s):  
Statistical Analysis ◽  
Machine Tool ◽  
Regression Model ◽  
Cutting Speed ◽  
Cutting Parameters ◽  
Numerical Control ◽  
Depth Of Cut ◽  
Dry Turning ◽  
Tool Vibration ◽  
Dimensional Deviation

Performance of machining processes is assessed by dimensional and geometrical accuracy which is mentioned in this paper as dimensional deviation. A part quality does not depend solely on the depth of cut, feed rate and cutting speed. Other variable such as excessive machine tool vibration due to insufficient dynamic rigidity can be deleterious to the desired results. The focus of the present study is to find a correlation between dimensional deviation against cutting parameters and machine tool vibration in dry turning. Hence cutting parameters and vibration-based regression model can be established for predicting the part dimensional deviation. Experiments are conducted using a Computerized Numerical Control (CNC) lathe with carbide insert cutting tool. Vibration data are collected through a data acquisition system, then tested and analyzed through statistical analysis. The analysis revealed that machine tool vibration has significant effect on dimensional deviation where statistical analysis of individual regression coefficients showed p<0.05. The developed regression model has been validated through experimental tests and found to be reliable to predict dimensional deviation.

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