Threading apparatus

Details Threading apparatus Threading apparatus

1992-02-25

1993-11-23

Bishop, Steven C.

Cutting by use of rotating axially moving tool

Tool or tool-support with torque-applying clutch

192 51, 408141, B23G 302

Patent

active

052637999

ABSTRACT:
A threading apparatus has a rotatable and axially movable driving part, a driven part which is axially displaceable relative to the driving part and adapted for driving a threading tool, a switchable form-locking coupling device including a switching member connected with the driven part and provided with coupling members and at least one coupling part driven by the driving part and having coupling elements. The driven part with the switching member and the at least one coupling part are axially relatively displaceable so that the at least one coupling part with the coupling elements is positionable with the coupling members in form-locking coupling engagement with the driven part or in a not driven intermediate position. The switching member is connected with the driven part in an axially not-displaceable manner and coupled form-lockingly in a circumferential direction and drives the driven part. The switching member is provided on its outer side with substantially axes-parallel grooves in which the coupling members are received axially movably and form-lockingly in a circumferential direction.

REFERENCES:
patent: 3946844 (1976-03-01), Johnson
patent: 4277209 (1981-07-01), Benjamin et al.
patent: 4705437 (1987-11-01), Johnson
patent: 4832542 (1989-05-01), Johnson et al.

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