Stability improvement and vibration suppression of the thin-walled workpiece in milling process via magnetorheological fluid flexible fixture

2016 ◽  
Vol 88 (5-8) ◽  
pp. 1231-1242 ◽  
Author(s):  
Junjin Ma ◽  
Dinghua Zhang ◽  
Baohai Wu ◽  
Ming Luo ◽  
Yilong Liu
Keyword(s):  
Vibration Suppression ◽  
Magnetorheological Fluid ◽  
Milling Process ◽  
Thin Walled

Study on Machining Deformation Errors in Spiral Finish Milling of Thin-Walled Blades

2011 ◽  
Vol 314-316 ◽  
pp. 1773-1777
Author(s):  
Wei Wei Liu ◽  
Pei Chen ◽  
Xiao Juan Gao ◽  
Chen Wei Shan ◽  
Min Wan
Keyword(s):  
Geometric Dimension ◽  
Beam Theory ◽  
Milling Process ◽  
Simplified Model ◽  
Machining Deformation ◽  
Proposed Model ◽  
Thin Walled ◽  
The Relationship ◽  
Torsion Deformation

In this paper, a new procedure is proposed to study the deformation errors for spiral milling process of blade, which can be simplified as a stepwise beam based on the geometry and clamping characteristics. Kirchhoff beam theory is adopted to analyze the bending and torsion deformation. The relationship between machining deformation errors and the workpiece’s geometric dimension are also established based on the simplified model. Corresponding algorithms are realized by MATLAB codes. Experiment test shows that the results predicted by the proposed model are in well agreement with measured ones.

scholarly journals A variable resonance magnetorheological-fluid-based pendulum tuned mass damper for seismic vibration suppression

2019 ◽  
Vol 116 ◽  
pp. 530-544 ◽  
Author(s):  
M.D. Christie ◽  
S. Sun ◽  
L. Deng ◽  
D.H. Ning ◽  
H. Du ◽  
...  
Keyword(s):  
Vibration Suppression ◽  
Magnetorheological Fluid ◽  
Tuned Mass Damper ◽  
Seismic Vibration ◽  
Mass Damper

Stability Prediction during Thin-Walled Workpiece High-Speed Milling

2009 ◽  
Vol 69-70 ◽  
pp. 428-432 ◽  
Author(s):  
Qing Hua Song ◽  
Yi Wan ◽  
Shui Qing Yu ◽  
Xing Ai ◽  
J.Y. Pang
Keyword(s):  
High Speed ◽  
Dynamic Properties ◽  
Removal Rate ◽  
Cutting Parameters ◽  
Milling Process ◽  
Machining Process ◽  
High Speed Milling ◽  
Thin Walled ◽  
Optimization Of Cutting Parameters ◽  
Free Material

A method for predicting the stability of thin-walled workpiece milling process is described. The proposed approach takes into account the dynamic characteristics of workpiece changing with tool positions. A dedicated thin-walled workpiece representative of a typical industrial application is designed and modeled by finite element method (FEM). The workpiece frequency response function (FRF) depending on tool positions is obtained. A specific 3D stability chart (SC) for different spindle speeds and different tool positions is then elaborated by scanning the dynamic properties of workpiece along the machined direction throughout the machining process. The dynamic optimization of cutting parameters for increasing the chatter free material removal rate and surface finish is presented through considering the chatter vibration and forced vibration. The investigations are compared and verified by high speed milling experiments with flexible workpiece.

Study on the influence of magnetorheological fluid on tool vibration during end milling process

2015 ◽  
Vol 5 (3) ◽  
pp. 696-703 ◽  
Author(s):  
P. Sam Paul ◽  
C. K. Shobhan Kumar ◽  
Melvin Joshua ◽  
S. Vignesh ◽  
S. Saravanan ◽  
...  
Keyword(s):  
End Milling ◽  
Magnetorheological Fluid ◽  
Milling Process ◽  
Tool Vibration ◽  
End Milling Process

Milling Process Monitoring Based on Vibration Analysis Using Hilbert-Huang Transform

2018 ◽  
Vol 12 (5) ◽  
pp. 688-698 ◽  
Author(s):  
Agus Susanto ◽  
Chia-Hung Liu ◽  
Keiji Yamada ◽  
Yean-Ren Hwang ◽  
Ryutaro Tanaka ◽  
...  
Keyword(s):  
Signal Processing ◽  
Feature Extraction ◽  
Process Monitoring ◽  
Signal Analysis ◽  
Vibration Analysis ◽  
Milling Process ◽  
Machining Process ◽  
Hilbert Huang Transform ◽  
Thin Walled ◽  
Tool Damage

Vibration analysis is one method of machining process monitoring. The vibration obtained in machining is often nonlinear and of a nonstationary nature. Therefore, an appropriate signal analysis is needed for signal processing and feature extraction. In this research, vibrations obtained in the milling of thin-walled workpieces were analyzed using the Hilbert-Huang transform (HHT). The features obtained by the HHT served as machining-state indicators for machining process monitoring. Experimental results showed the effectiveness of the HHT method for detecting chatter and tool damage.

Optimization of Milling Process for Aluminum Alloy Frame Part Based on Milling Force Analysis

2014 ◽  
Vol 575 ◽  
pp. 437-441
Author(s):  
Yi Shu Hao ◽  
Guo Qing Tang ◽  
Meng Zhang
Keyword(s):  
Aluminum Alloy ◽  
Selection Method ◽  
Milling Process ◽  
Parameter Selection ◽  
Force Analysis ◽  
Milling Force ◽  
Finite Element Software ◽  
Milling Parameters ◽  
Machining Errors ◽  
Thin Walled

In order to solve the problem of size guarantee related to thin-walled structure in traditional milling parameter selection, specific aluminum alloy frame part contains curved surface and thin-walled structure is studied. Numerical analysis is used in milling parameter selection method. Machining errors are calculated and checked based on milling force analysis. The milling process is simulated using finite element software. And aluminum alloy frame part processing is optimized from the angle of milling parameters according to the simulation results. Optimized milling parameters scheme is acquired, the results show that both machining precision and efficiency of the frame part are improved.

Cutter Exit Effects during Milling of Thin-Walled Inconel 718

2012 ◽  
Vol 590 ◽  
pp. 297-308 ◽  
Author(s):  
B. Wanner ◽  
M. Eynian ◽  
T. Beno ◽  
L. Pejryd
Keyword(s):  
Cutting Tools ◽  
Milling Process ◽  
Process Dynamics ◽  
Chatter Vibrations ◽  
Force Profile ◽  
Thin Walled ◽  
Small Change ◽  
Exit Behavior ◽  
Tool Position ◽  
Cutting Behavior

During milling of thin-walled components, chatter vibrations give rise to process issues. These include dimensional inaccuracy, damaged and scrap parts, and damaged cutting tools. This, in turn, leads to loss of production time with increasing cost as a consequence. This paper identifies the force profile during a single cut milling process. It focuses on the exit and post-exit behavior of the cut and discusses the process dynamics. The force profiles of various tool-to-workpiece positions are analyzed as regards the exit and post exit phases. A standard on-the-market cutter and a specially designed zero rake cutter are used in the investigation. Finally, a time-domain simulation of the force is performed and compared to the experimental results. The study concludes that a small change in exit angle may result in a considerable improvement in cutting behavior. In addition, the tool position should be chosen so that the cutter exits in the least flexible direction possible for the workpiece.

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