A note on machine tool vibration model

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

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

Modal Analysis of Ball Screw Based on ANSYS Software

2011 ◽  
Vol 314-316 ◽  
pp. 1981-1986 ◽  
Author(s):  
Qing Ke Yuan ◽  
Ya Nan Du ◽  
Yao Ding ◽  
Tong Le Wang
Keyword(s):  
Numerical Model ◽  
Machine Tool ◽  
Modal Analysis ◽  
Structure Analysis ◽  
Ball Screw ◽  
Feeding System ◽  
Ansys Software ◽  
Intrinsic Frequency ◽  
Vibration Model

Ball screw is an important part in the machine tool feeding system. This paper researches on the ball screw, establishes the 3D virtual numerical model by Pro/engineer. Modal analysis of ball screw is carried out in three different cases by ANSYS, then gets the intrinsic frequency and vibration model of ball screw. It provides reliable reference for further structure analysis of ball screw.

Experimental Research on Parameters Identification of Dynamic Characteristic for Parallel Machine Tool

2013 ◽  
Vol 300-301 ◽  
pp. 181-184
Author(s):  
Chun Xia Zhu ◽  
Zhi Wen Chen ◽  
Bo Liu ◽  
Jing Wang
Keyword(s):  
Optimal Design ◽  
Theoretical Analysis ◽  
Machine Tool ◽  
Dynamic Characteristic ◽  
Parallel Machine ◽  
Vibration System ◽  
Flexible Coupling ◽  
Vibration Model ◽  
Experiment Method ◽  
Parallel Machine Tool

The dynamic characteristics of parallel 3-TPT machine tool are researched by experiment in this paper. Firstly, modal analysis principle of machine tool was analyzed in theory, and the parameters of dynamic characteristic were identified by theoretical analysis. Then vibration model of parallel machine tool was built and formed vibration system of rigid and flexible coupling for analysis. Then, the modal experiment method and steps were introduced, and the experiment parameters also were identified according to the experiment results. The result dates are showed that the result dates are validated. So the experiment method is feasible by experimental verification, which provides reference for dynamic optimal design.

Research on Modal Analysis of Precision Micro Slitting Turn-Milling Machine Tool Based on Hammer Experimental Method

2019 ◽  
Vol 295 ◽  
pp. 67-72
Author(s):  
Zhong Peng Zheng ◽  
Xin Yang Jiang ◽  
Xin Jin
Keyword(s):  
Machine Tool ◽  
Modal Analysis ◽  
Experimental Method ◽  
Machine Tools ◽  
Processing Parameters ◽  
Milling Machine ◽  
Vibration Model ◽  
Vibration Modal ◽  
Turn Milling ◽  
Machine Structure

In order to improve the dynamic stability of precision micro slitting turn-milling machine tools, reduce or avoid the vibration problem during the cutting process, optimize the machine structure and processing parameters, the modal analysis of precision micro slitting turn-milling machine tool based on hammer experimental method was researched. In this paper, by analyzing the mechanism of precision micro slitting turn-milling machine tools, the multi degree-of-freedom mathematical vibration model of precision slitting turn-milling machine tools is constructed. The precision micro turn-milling machine tool is analyzed based on the hammer experiment analysis. The modal analysis obtained the first five natural frequencies and resonance speeds of the precision micro slitting turn-milling machine tool,including ST26, NN-25UB8K2 and NN-20UB87. The research results show that hammer experimental method can evaluate the vibration modal analysis of precision micro slitting turn-milling machine tools to some extent. The experimental modal analysis results guide and optimize the structural design and processing technology of precision micro slitting turn-milling machine tools.

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.

Realization of Real-Time Balancing of a Machine Tool Spindle Using Magnetic Fluid

2010 ◽  
Vol 4 (6) ◽  
pp. 518-523
Author(s):  
Keiichi Nakamoto ◽  
◽  
Hidenori Nakatsuji ◽  
Shinya Mitsuhashi ◽  
Keiichi Shirase ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Machine Tool ◽  
Real Time ◽  
Magnetic Fluid ◽  
Colloidal Suspension ◽  
Machined Surface ◽  
Tool Vibration ◽  
Mass Imbalance ◽  
Machine Tool Spindle ◽  
Machining Operations

Tool vibration shortens tool life and lowers the quality of the machined surface. Even a small mass imbalance in the spindle and tooling generates tool vibration. Additionally, in machining operations, different tooling setups including the cutting tools rotate at different speeds for each machining operation, making it difficult to reduce tool vibration. In order to solve the problem, real-time balancing using magnetic fluid was proposed in our previous study. Magnetic fluid is a type of smart fluid comprised of a stable colloidal suspension of magnetic nanoparticles in a liquid carrier, and its viscosity and behavior are precisely controlled by changes in magnetic field intensity. To compensate for the mass imbalance of a spindle and tooling in real-time, the magnetic fluid enclosed inside the spindle is controlled to alter the distribution of circumferential mass by adjustments in the intensity of the magnetic field made from outside the spindle. Thus, tool vibration, which changes frequently depending on tooling during various machining operations, can be reduced successfully. In this paper, a machine tool spindle with the proposed real-time balancing is developed, and several experiments are conducted. It is confirmed that the mass imbalance in the entire rotating system is significantly reduced in real-time, and tool vibration is effectively suppressed as well.

Sign in / Sign up

Export Citation Format

Share Document