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Developments in Fastener Coldworking in Next Generation Automated Production Units
Technical Paper
1999-01-3441
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The incorporation of split mandrel coldworking into a single- station, automated wing assembly machine advances the technical quality of automated production. Coldworking innovations, including the CMX process and new puller unit development, combined with new clamp-up technology, have eliminated the need for manual dissasembly and deburring, both costly and time consuming procedures.
These advances in automation are illustrated in the development of a next-generation automated unit created for wing production of the Airbus A340-600 wide-body program. This paper describes the implementation of new fastener and coldworking technology that led to the development of this automated manufacturing system.
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Citation
Leon, A. and Hempstead, B., "Developments in Fastener Coldworking in Next Generation Automated Production Units," SAE Technical Paper 1999-01-3441, 1999, https://doi.org/10.4271/1999-01-3441.Also In
References
- Hartmann, John, Zieve, Peter, Wing Manufacturing: Next Generation, SAE No. 985601 , 1998 World Aviation Conference September 28-30, 1998 Anaheim, California
- Hartmann, John, et.al. A Flexible Automated Aircraft Assembly System, Phase 1: Process Development, SAE No. 961878 1996 SAE Aerofast Conference
- West Coast Industries, WCI Engineering Handout No. 9201-6.1: Split Mandrel Coldworking in Aluminum
- Boeing Aircraft Corporation, Boeing Process Specification No. 5973, Split Sleeve Coldworking of Fastener Holes
- Boeing Aircraft Corporation, Boeing Process Specification No. 5768 Split Mandrel Coldworking of Fastener Holes in Aluminum
- Rich, D.I. Impellizzeri, L.F. Fatigue analysis of coldworked and interference fit fastener holes, in Cyclic Stress-Strain and Plastic Deformation Analysis of Fatigue Crack Growth, ASTM STP 637 American Society for Testing and Materials Philadelphia 1977
- Arora, P.R. Dattaguru, B. Subramaya Hande H.S. A method for estimation of the radius of elastic- plastic boundary around coldworked holes Journal of Testing Evaluation, JTEVA 1992 20 369 375.
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- Kliman, V. Bilý, M. Probácha, J. Improvement of fatigue performance by cold hole expansion, part 2: experimental verification of proposed model, International Journal of Fatigue 1993 15 101 107.