Thread cutting machine

Details Thread cutting machine Thread cutting machine

1976-10-07

1977-12-27

Combs, E. M.

Cutting by use of rotating axially moving tool

Tool or tool with support

Having inversely angled cutting edge

10139WH, 408 7, 408 12, 408 63, 408 69, B23G 120, B23G 1100

Patent

active

040645851

ABSTRACT:
An automatic thread cutting machine for nuts and similar mass-produced parts where the nuts or the like are taken from a magazine and moved through a feed trough into a guide where they are held secured against rotation and are then pushed by means of a pusher over a rotating thread cutter from where they are subsequently removed while the pusher is returned to its starting position. The machine is provided with an actuating cylinder which is capable of being charged with a pressure medium and which has a piston rod that is provided at its free end with a plunger serving as the pusher. A clock pulse controlled switch valve arrangement is disposed in the pressure medium line leading to the actuating cylinder, and the machine is electrically protected by a safety device which is influenced by the position of the piston rod, the safety device being rendered operative in dependence on the position of the piston rod.

REFERENCES:
patent: 2249758 (1941-07-01), Goldberg
patent: 2373619 (1945-10-01), Vajda
patent: 2869154 (1959-01-01), Williams
patent: 2952170 (1960-09-01), Hansen et al.
patent: 3838934 (1974-10-01), Petroff

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