Dynamic analysis on and optimized design of the BED structure of CNC machine

Author

Li, Xiaopeng ; Zhao, Zhijie

Author_Institution

State Key Lab. of Mech. Syst. & Vibration, Northeastern Univ., Shenyang, China

fYear

2011

fDate

23-25 May 2011

Firstpage

3998

Lastpage

4002

Abstract

The dynamic characteristics of bed structure is a key factor in product performance, so to study how to improve the dynamic performance has profound significance to the development of machine tool. The simplified finite element modal is established with ANSYS aiming to study the machine tool bed, and the first 6-order natural frequencies and vibration models are selected to analyze. On the basis of the presented simulation analysis, the changing trend of the natural frequency is studied mainly while the height of bed in different circumstances. And the impact of ribbed plate of the spindle box supporting platform and the chip removal port structure on the dynamic characteristic are studied. With the work, effective solutions will be obtained and machine tool can be designed more effectively resulting in higher workpiece quality and process stability.

Keywords

computerised numerical control; design; finite element analysis; machine tools; mechanical engineering computing; optimisation; stability; vibrations; 6-order natural frequencies; ANSYS; CNC machine; bed structure; chip removal port structure; finite element modal; machine tool; optimized design; process stability; ribbed plate impact; spindle box supporting platform; vibration models; workpiece quality; Analytical models; Finite element methods; Machine tools; Optimization; Software; Solid modeling; Vibrations; CNC Machine; Dynamic Characteristics; Modal Analysis; Structure Optimization;

fLanguage

English

Publisher

ieee

Conference_Titel

Control and Decision Conference (CCDC), 2011 Chinese

Conference_Location

Mianyang

Print_ISBN

978-1-4244-8737-0

Type

conf

DOI

10.1109/CCDC.2011.5968922

Filename

5968922