Dynamic analysis and stability prediction of nonlinear feed system coupled with flexible workpiece

2021 ◽  
pp. 116597
Author(s):  
Ziyi Wang ◽  
Changyou Li ◽  
Mengtao Xu ◽  
Yimin Zhang
Keyword(s):  
Dynamic Analysis ◽  
Stability Prediction ◽  
Feed System ◽  
Flexible Workpiece

Multi-Level Dynamics in Deep Milling of Flexible Workpiece

2012 ◽  
Vol 482-484 ◽  
pp. 2234-2237
Author(s):  
Muhammad Masud Akhtar ◽  
Xiang Huang ◽  
Wen Liang Chen ◽  
Zi Xiong Lin
Keyword(s):  
Frequency Response ◽  
Frequency Response Function ◽  
End Milling ◽  
Input Parameter ◽  
Vital Role ◽  
Stability Prediction ◽  
Flexible Workpiece ◽  
Flexible Parts ◽  
Multi Level ◽  
Prediction Control

Chatter is the most obscuring phenomenon and significant amount of research has been documented regarding prediction, control and elimination of chatter. The present study has been undertaken in order to investigate the effects of multilevel dynamics in the dynamic stability prediction of deep end milling of the flexible parts. In the course of development of stability lobes diagram (SLD), input parameter of structure dynamics plays a vital role on the precision of SLD. In the present study CutPro is used to develop SLD for deep end milling of flexible workpiece after considering two cases of frequency response function (FRF) identification of flexible workpiece. It is shown that for deep end milling of flexible workpiece it is not enough to just identify the FRF of the workpiece only at one free end of the workpiece. To develop the exact and precise SLD it is necessary to identify the FRF of the flexible workpiece at more than one point along the axial depth depending upon how deep the workpiece is being milled.

Nonlinear dynamic analysis of ball screw feed system considering assembly error under harmonic excitation

2021 ◽  
Vol 157 ◽  
pp. 107717
Author(s):  
Zhendong Liu ◽  
Mengtao Xu ◽  
Hongzhuang Zhang ◽  
HuiHui Miao ◽  
Zhenyuan Li ◽  
...  
Keyword(s):  
Dynamic Analysis ◽  
Nonlinear Dynamic ◽  
Nonlinear Dynamic Analysis ◽  
Harmonic Excitation ◽  
Ball Screw ◽  
Feed System ◽  
Assembly Error ◽  
Screw Feed

Stability prediction in straight turning of a flexible workpiece by collocation method

2012 ◽  
Vol 54-55 ◽  
pp. 73-81 ◽  
Author(s):  
G. Urbikain ◽  
L.N. López de Lacalle ◽  
F.J. Campa ◽  
A. Fernández ◽  
A. Elías
Keyword(s):  
Collocation Method ◽  
Stability Prediction ◽  
Flexible Workpiece

Chatter Suppression in Parallel Turning Assisted with Tool Swing Motion Provided by Feed System

2019 ◽  
Vol 13 (1) ◽  
pp. 80-91 ◽  
Author(s):  
Shuntaro Yamato ◽  
Toshiki Okuma ◽  
Kenichi Nakanishi ◽  
Junji Tachibana ◽  
Norikazu Suzuki ◽  
...  
Keyword(s):  
Feed System ◽  
Machined Surface ◽  
Chatter Suppression ◽  
Feed Drive ◽  
Flexible Workpiece ◽  
Spindle Speed Variation ◽  
Suppression Technique ◽  
Feed Drive System ◽  
Enhanced Surface ◽  
Variation Technique

Parallel turning technology has been attracting attention as an important technology to enhance the productivity of multitasking machine tools. To maximize the productivity advantage of parallel turning, chatter avoidance or suppression is one of the most noteworthy concerns. In this study, a novel chatter suppression technique using tool swing motion is provided by a feed drive system. The optimal design methodology of the tool swing motion for effective chatter suppression is also introduced based on its analogy with the spindle speed variation technique under the shared-surface parallel turning and rigid-tool and flexible-workpiece assumptions. The proposed method was evaluated with regard to the chatter stabilizing performance and workpiece runout as compared to conventional equal pitch turning and unequal pitch turning for chatter suppression. As a result, the proposed tool swing parallel turning exhibited a high chatter stabilizing performance without eccentricity of the workpiece and enhanced surface quality, although particular swing marks were left on the machined surface.

scholarly journals Combination of dynamic analysis and data mining for stability prediction after cardiac surgery

2009 ◽  
Vol 24 (3) ◽  
pp. e32
Author(s):  
K. Van Loon ◽  
F. Guiza ◽  
G. Meyfroidt ◽  
J.-M. Aerts ◽  
H. Blockeel ◽  
...  
Keyword(s):  
Data Mining ◽  
Cardiac Surgery ◽  
Dynamic Analysis ◽  
Stability Prediction
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