Automated process for cold working holes

Details Automated process for cold working holes Automated process for cold working holes

B - Operations, Transporting

23

P

78/12

B23P 9/02 (2006.01) B23P 19/00 (2006.01)

Patent

CA 1251061

12 Title of the Invention: AUTOMATED PROCESS FOR COLD WORKING HOLES Inventor: Madeline A. Kuless ABSTRACT OF THE DISCLOSURE A method for cold working holes employs an automatic riveting machine that is fed with memory metal sleeves having an O.D. slightly smaller than a hole to be worked. mandrel is forced into the sleeve and plastically expands the sleeve in the hole thereby working the hole wall around the sleeve. The mandrel is withdrawn and the sleeve is thermally induced to return to its initial shape memory O.D. permitting removal of the shrunken sleeve from the work hole.

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