Tool for coldworking holes

Details Tool for coldworking holes Tool for coldworking holes

1988-03-22

1989-09-26

Spruill, Robert L.

Metal deforming

By relatively receding work-engaging tool-faces

Embodying three or more tools

B21D 4102

Patent

active

048690910

ABSTRACT:
A machine coldworking tool (10) for coldworking holes (13) in a metal structure (15) and adapted for mounting on a automated drilling and rivet installation machine (12). The tool (10) comprises a mandrel assembly (20) mounted within a housing (18) that is releasably engage with the machine (12) via a lock fitting (152) is operably engaged with the mandrel assembly (20) to insert a collapsible mandrel (40) through the hole (13). A rod (92) is attached to a rod pusher (98) that is urged by the lock fitting (152) to slide through the mandrel (40) to support the mandrel fingers (62). A lever (100) pivotally mounted to the mandrel holder (42) holds the rod pusher (98) and the rod (92) in place as the mandrel assembly (20) is pulled upward in the housing (18), thereby pulling the mandrel (40) back through the hole (13) and coldworking the metal structure (15) surrounding the hole (13).

REFERENCES:
patent: 4144625 (1979-03-01), Hogenhout
patent: 4180195 (1979-12-01), Caley et al.
patent: 4365401 (1982-12-01), Ogren
patent: 4515302 (1985-05-01), Davern
patent: 4583388 (1986-04-01), Hogenhout
patent: 4640114 (1987-02-01), Kuless
patent: 4665732 (1987-05-01), Hogenhout
patent: 4715203 (1987-12-01), Wiegenstein

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