Method of removing punch rivets set into a workpiece

Details Method of removing punch rivets set into a workpiece Method of removing punch rivets set into a workpiece

1998-06-18

2000-08-29

Bryant, David P.

Metal working

Method of mechanical manufacture

Disassembling

29447, 29413, 29414, B32P 1900

Patent

active

061088900

ABSTRACT:
The invention relates to a method of removing punch rivets, which are set into a workpiece and have a male die end for driving the punch rivet and an opposite female die end which penetrates the workpiece. A pin is placed with its front end onto the male die end so as substantially to cover the latter and, with a simultaneous supply of energy through the pin, heats the contact area between pin and male die end up to a fusion temperature in the contact area, whereupon after cooling of the contact area the pin is retracted counter to the pressure of an abutment supported on the workpiece and carries along the punch rivet which is thereby withdrawn from the workpiece.

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