Variable impact tee-nut insertion machine

Details Variable impact tee-nut insertion machine Variable impact tee-nut insertion machine

1995-07-06

1997-03-04

Echols, P. W.

Metal working

Means to assemble or disassemble

Means to drive self-piercing work part

227130, B23P 1900

Patent

active

056067941

ABSTRACT:
A machine for inserting a Tee-nut into a workpiece of the type having a Tee-nut supplying source and a power cylinder assembly, the power cylinder assembly comprising a cylinder having an upper end headplate and a lower end headplate, openings provided on the cylinder for admitting and venting compressed air, a piston moveable within the cylinder, a piston rod secured to the piston, the lower end of the piston rod extending through the lower end headplate and adapted to engage and drive a Tee-nut into a workpiece, the upper end of the piston rod extending through the upper end headplate, and a kinetic energy storage unit removably mounted to the upper end of the piston rod, thereby providing a mass on the piston which is accelerated by gravity and air pressure during a downward stroke and is sufficient to drive a Tee-nut into a workpiece with a very low shock effect and to a precise depth. A kit for retrofitting and converting an existing Tee-nut insertion machine to a variable impact Tee-nut insertion machine is also disclosed.

REFERENCES:
patent: 3979040 (1976-09-01), Denin
patent: 4120438 (1978-10-01), Litch
patent: 4313552 (1982-02-01), Maurer
patent: 4821940 (1989-04-01), Rotherham
patent: 5323531 (1994-06-01), Leistner et al.
patent: 5538172 (1996-07-01), Jochum et al.

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