Reliability Evaluation of Chain-Type Tool Magazine and ATC

Abstract:

As the tool magazine and automatic tool changer (ATC) are the important function units to reserve and change tools for the machining center, the tool-changing rate affects their reliability life which directly influences the performance level of the machining center. However, the reliability of the tool magazine and ATC has not yet got a reasonable evaluation index. Directing at the features of the tool magazine and ATC system, the mean tool change numbers between failures evaluation index is proposed, which is used to calculate the mean time to repair and estimate the collected failure data of the chain-type tool magazine and ATC. It can be seen that the tool magazine with continuous tool-changing adopts the mean tool change numbers between failures as the reliability evaluation index.

• Periodical: Applied Mechanics and Materials (Volumes 271-272)
• Pages: 461-465
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.271-272.461
• Online since: December 2012
• Authors: Xiao Hong Lu, Peng Zhuo Han, Wen Yi Wu
• Keywords: ATC, Chain-Type Tool Magazine, Mean Time to Repair, Mean Tool Change Numbers between Failures, Reliability

References

[1] Wu Jun, Deng Chao, Shao Xinyu, Xie S Q, A reliability assessment method based on support vector machines for CNC equipment [J]. Science in China Series E: Technological Sciences, Jul. 2009, vol. 52, no. 7, 1849-1857.

DOI: 10.1007/s11431-009-0208-z

[2] Bin Li, Hailong Lu, Methods of Reliability Estimation for Numerical Control Machine Tool Based on Performance Parameters [J]. 2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011-Proceedings, pp.4144-4147, (2011).

DOI: 10.1109/mace.2011.5987916

[3] Wang Zhiming, Yang Jianguo, Reliability assessment of numerical control machine tools using Weibull mixture models [J]. Advanced Materials Research, v 181-182, pp.161-165, 2011, Advanced Materials Science and Technology.

DOI: 10.4028/www.scientific.net/amr.181-182.161

[4] Wang Zhiming, Yang Jianguo, Wang Guoqiang, Zhang Genbao, Reliability evaluation of multiple NC machine tools with time truncation [J]. Harbin Gongye Daxue Xuebao/ Journal of Harbin Institute of Technology, v 43, n 3, pp.85-89, March (2011).

[5] Yang Zhaojun, Hao Qingbo, Chen Fei, Xu Binbin, Li Xiaobing, Zhao Hongwei, A comprehensive fuzzy reliability allocation method of NC machine tools based on interval analysis [J]. Beijing Gongye Daxue Xuebao/ Journal of Beijing University of Technology, v 37, n 3, pp.321-329, March (2011).

DOI: 10.1109/icrms.2011.5979393

[6] Yang Zhaojun, Zhu Xiaocui, Jia Yazhou, Wang Liding, Xu Binbin, Li Xiaobing, Lu Jianwei, Fuzzy-comprehensive evaluation of use reliability of CNC machine tools [J]. Key Engineering Materials, v 464, pp.374-378, (2011).

DOI: 10.4028/www.scientific.net/kem.464.374

[7] Wang Guiping. Study on Evaluation System and Increasing Technology of Reliability and Green in CNC Machining Center[D]. Changchun: Jilin University, 2008. in Chinese.