Browse > Article

Analysis on Static Load and Resonance Frequency of Bed in Turning and Hobbing Automatic Lathe for Precision Machining  

Ha, Joo-Hwan (KOREATECH School of Mechatronics Engineering)
Lee, Yun-Chul (KOREATECH School of Mechatronics Engineering)
Jo, Eun-Jeong (KOREATECH School of Mechatronics Engineering)
Lee, Young-Sik (Daesung Hi-Tech co., Ltd.)
Lee, Jae-Kwan (Daesung Hi-Tech co., Ltd.)
Kim, Kwang-Sun (KOREATECH School of Mechatronics Engineering)
Publication Information
Journal of the Semiconductor & Display Technology / v.17, no.1, 2018 , pp. 66-70 More about this Journal
Abstract
This paper is about the analysis on the vibration characteristic of tooling units on the precision bed in turning and hobbing automatic lathe for precision machining. An automatic lathe operating at about 12,000 RPM is a critical factor in the self-weight stress and deformation of the bed. Especially, the resonance frequency should be grasped in advance to prevent abnormal vibration that may occur during processing. If the wrong bed is used, the resonant frequency can have a fatal influence on the precision machining and increase the defective rate of precision machined parts such as semiconductor parts. In this paper, vibration characteristics were evaluated through static load and resonance frequency analysis of automatic lathe bed. As a result, the maximum stress was 14.52 MPa, the maximum deformation amount was $12.15{\mu}m$, and the natural frequency was 189.43 Hz. The resonance frequency was calculated as 500 Hz, and the stability was confirmed by being in the range of 200 Hz or more, which is the processing condition.
Keywords
CAE; Static Structural; Modal; Harmonic; Automatic Lathe;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 Park. C. H., Kim. J. U., Wang. D. H., and Kim. W. I., 2005, "Development of Electrode Guide of Super-drill EDM and Electrical Discharge Machining of Small Hole for High Precision Semiconductor Die", Journal of the KSMPE, Vol.4, No.3, pp.32-38.
2 Choi. S. G., Kim. S. H., Choi. W. K., Shin. H. J., Lee. E. S., and Kim. K. D., "A Study in the Modal Analysis of Hybrid Vertical Grinding System Bed", Journal of the KSMTE, Vol. 12, No. 5, pp,50-56, 2013
3 2015, Star-CCM User Guide ver.10.02, CD-adapco.
4 Ferdinand P. Beer, E. Russell Johnston, Jr., and John T. DeWolf, 2004, "Mechanics of Materials" 3rd Edition, Mcgraw-Hill, PP.47-56.
5 J. Douglas Faires and Richard Burden, 2003, "Numerical Methods", 3rd Edition, INTER VISION.
6 Kang-Woo Joo, Jun-Young Kim, Hee-Rak Beom, and Kwang-Sun Kim, 2011, "Numerical Analysis on Thermal Deformation of Linear Motor in Chip Mounter", Proceedings of the ASME 2011 International Mechanical Engineering Congress & Exposition.
7 Joohwan Ha, Yunchul Lee, Kangwo Joo, Eunjeong Jo, Youngsik Lee, Jaekwan Lee and Kwangsun Kim, 2017, "Analysis on Static Load and Resonance Frequency of Bed in High-speed Automatic Lathe for Precision Machining", Journal of the Semiconductor & Display Technology, Vol. 16, No. 2. June 2017.