Structure Optimization of High-Speed Machining Center Workbench Based on Bionic Design and Hierarchical Optimization Techniques

2013 ◽  
Vol 378 ◽  
pp. 579-583 ◽  
Author(s):  
Fei Fei Xiang ◽  
Zhong Ke Xiang ◽  
Hong Ying Li
Keyword(s):  
High Speed ◽  
Design Method ◽  
Optimization Techniques ◽  
Hierarchical Optimization ◽  
Machining Accuracy ◽  
Optimal Size ◽  
High Speed Machining ◽  
Stiffened Plate ◽  
Bionic Design ◽  
Machining Center

We aimed at high speed machining center high machining accuracy and lightweight design requirements ,Then design the two different stiffened plate structure workbench, The one use traditional design method, the other use bionic design method; Optimize the dimensions of bionic stiffened plate design based on CAD/CAE system integration and hierarchical optimization techniques, got the optimal size; through the static analysis and modal analysis verify the superiority of the optimization schemes.

scholarly journals Bionic Design for Column of Gantry Machining Center to Improve the Static and Dynamic Performance

2012 ◽  
Vol 19 (4) ◽  
pp. 493-504 ◽  
Author(s):  
Shihao Liu ◽  
Wenhua Ye ◽  
Peihuang Lou ◽  
Weifang Chen ◽  
Jungui Huang ◽  
...  
Keyword(s):  
Design Method ◽  
Dynamic Performance ◽  
Machining Accuracy ◽  
Bionic Design ◽  
Element Analysis ◽  
Plate Structure ◽  
Design Concepts ◽  
Machining Center ◽  
Dynamic Experiments ◽  
Lightweight Structure

In order to improve the machining accuracy of a gantry machining center, structural bionic design for column was conducted. Firstly, the bionic design method for stiffener plate structure was established based on distribution principles of gingko root system. The bionic design method was used to improve column structure of the gantry machining center, and three kinds of bionic columns were put forward. The finite element analysis on original and bionic columns indicates that the mass of the column with the best bionic stiffener plate structure is reduced by 2.74% and the first five order natural frequencies are increased by 6.62% on average. The correctness of column's bionic design method proposed in this paper was verified by the static and dynamic experiments. Finally, the bionic principles for stiffener plate of column were concluded, which provides a new idea for updating traditional design concepts and achieving lightweight structure of machine tool components.

An experimental investigation of spindle rotary error on high-speed machining center

2013 ◽  
Vol 70 (1-4) ◽  
pp. 327-334 ◽  
Author(s):  
Lan Jin ◽  
Zhaoyang Yan ◽  
Liming Xie ◽  
Weidong Gou ◽  
Linhu Tang
Keyword(s):  
Experimental Investigation ◽  
High Speed ◽  
High Speed Machining ◽  
Machining Center

Cutting Force and Tool Deflection Predictions for High Speed Machining of Hard to Cut Material

2010 ◽  
Vol 154-155 ◽  
pp. 1157-1164 ◽  
Author(s):  
Jinn Jong Sheu ◽  
Dong Mei Xu ◽  
Chin Wei Liu
Keyword(s):  
Cutting Force ◽  
Cutting Forces ◽  
High Speed ◽  
Force Model ◽  
Beam Model ◽  
High Speed Machining ◽  
Tool Deflection ◽  
Machining Center ◽  
Helical Angle ◽  
Cutting Experiment

The dimension accuracy and the too life are the major issues of the machining of hard-to-cut materials. To fulfill the requirements of accuracy and tool life needs not only well planning of cutting path but also the proper cutting conditions of cutters. The vibration and deflection of cutters caused by poor selection of cutting conditions can be predicted using models of cutting force and tool deflection. In this paper, a cutting force model considering the effect of tool helical angle and a cantilever beam model of tool deflection were proposed for the high speed machining of hard-to-cut material SKD11. The shearing force, the plowing forces, and the helical angle of cutters are considered in the elemental force model. The material of workpiece, SKD11, studied in this paper is commonly used for the die and mold industries. The cutting constants of the proposed force model are determined via the cutting experiments carried out on a high speed machining center. A dynamometer and a high frequency data acquisition system were used to measure the x-, y-, and z-direction cutting forces. The obtained cutting constants were used to predict the cutting forces and compared with the results obtained from the cutting experiment of verification using cutters with different helical angles. The theoretical and the experimental cutting forces in the x-, y-, and z- direction are in good agreement using flat cutters with 30 and 45 degrees of helical angle. The dimension deviations of the cut surface in the cutting experiment case of tool deflection were measured using a touch probe and an infrared receiver installed on the machining center. The measured average dimension deviation, 0.163mm, is close to the predicted tool deflection, 0.153mm, using the proposed cantilever beam model. The comparisons of the cutting forces and the average of the cut surface dimension deviation are in good agreement and verify the proposed cutting force and the tool deflection models are feasible and useful.

Measurement of Tool Unbalance on High-speed Machining Center

2000 ◽  
Vol 2000.2 (0) ◽  
pp. 151-152
Author(s):  
Fumio OBATA ◽  
Hisataka TANAKA ◽  
Kazutake UEHARA ◽  
Michio MORISHITA ◽  
Hiroyuki NISHIMOTO
Keyword(s):  
High Speed ◽  
High Speed Machining ◽  
Machining Center

Failure Mode Analysis for High-Speed Motorized Spindle of NC Machine Tools

2014 ◽  
Vol 623 ◽  
pp. 85-89
Author(s):  
Yu An He ◽  
Yan Ming He
Keyword(s):  
Machine Tools ◽  
High Speed ◽  
Failure Modes ◽  
Fault Tree ◽  
Mode Analysis ◽  
Machining Accuracy ◽  
High Speed Machining ◽  
Motorized Spindle ◽  
Nc Machine ◽  
Nc Machine Tools

High-speed motorized spindle of NC machine tools is the core component for high speed machining. Production efficiency, machining accuracy, processing quality are greatly improved, and production cost is reduced by high speed machining. The paper describes the common failure modes of high-speed motorized spindle. By the fault tree analysis method, failure modes of motorized spindle are modeled, and the main fault reasons of motorized spindle for NC machine tools are gotten. Qualitative analysis is performed for the fault tree by the mean of the structure function. At the end of this paper, the minimal cut sets which are the main sets of failure modes are all obtained. It has laid a good foundation for further study of quantitative analysis of motorized spindle failure modes.

Development of an Intelligent High-Speed Machining Center

CIRP Annals ◽  
2001 ◽  
Vol 50 (1) ◽  
pp. 275-280 ◽  
Author(s):  
M. Mitsuishi ◽  
S. Warisawa ◽  
R. Hanayama
Keyword(s):  
High Speed ◽  
High Speed Machining ◽  
Machining Center
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