Method and apparatus for feeding and tightening threaded parts

Details Method and apparatus for feeding and tightening threaded parts Method and apparatus for feeding and tightening threaded parts

1992-11-19

1994-03-08

Echols, P. W.

Metal working

Method of mechanical manufacture

With testing or indicating

29456, 29705, 29810, 29813, 29240, B23Q 708, B23Q 1722, B23P 1906

Patent

active

052916456

ABSTRACT:
The present invention is directed to a method and apparatus for feeding and tightening threaded parts, such as bolts or nuts. The apparatus incorporates a holding member longitudinally movable while holding a threaded part at the front end thereof, and a rotary feed rod having an engaging head at the front end thereof adapted to engage the threaded part. A retractable detecting member is used to detect the presence of a threaded part in the holding member. The rotary feed rod is longitudinally movable wherein, first, the holding member holds the threaded part at or adjacent the end of a part feeding passage and is then longitudinally moved to a position where the threaded part is coaxial with the feed rod. The engaging head of the feed rod is then advanced, and substantially at the same time as the engaging head engages the threaded part the holding member is moved backward to allow the feed rod to be advanced. Thus, the threaded part is fed to a mating part, such as a threaded hole or a bolt, and tightened.

REFERENCES:
patent: 2974406 (1961-03-01), Vilmerding
patent: 3675302 (1972-07-01), Dixon
patent: 3750257 (1973-08-01), Berecz
patent: 3760485 (1973-09-01), Smith
patent: 3929176 (1975-12-01), Dixon
patent: 4048687 (1977-09-01), Kato et al.
patent: 4201255 (1980-05-01), Donnelli et al.

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