Rotary cutting device

Details Rotary cutting device Rotary cutting device

1996-02-12

1998-04-07

Howell, Daniel W.

Cutting by use of rotating axially moving tool

Processes

Bit detachable

408 67, 408110, B23B 3500, B23B 5105

Patent

active

057356459

ABSTRACT:
The present invention relates to a cutting device for making holes, in particular holes in walls of hollow bodies made of plastic material, comprising a mount to which a cutting tool for cutting out a hole is secured, the mount being rotatably driven and performing an axial feeding motion, and an engaging member penetrating a disk which becomes separated in cutting the hole, the engaging member centrically penetrating the disk with respect to the periphery of the hole and withdrawing the separated disk which is then removed from the engaging member. The engaging member is axially displaceable and rotatably driven independent of the cutting tool and includes a self-cutting threaded profile turned into the disk before starting the cutting operation of the cutting tool and engaging the disk by forming a thread by means of the self-cutting thread of the engaging member.

REFERENCES:
patent: 1219461 (1917-03-01), Johnston
patent: 1354830 (1920-10-01), Janes
patent: 2435648 (1948-02-01), Frevel
patent: 2484150 (1949-10-01), Brown
patent: 3487728 (1970-01-01), Riley et al.
patent: 3854840 (1974-12-01), Miyanaga
patent: 5316418 (1994-05-01), Miyanaga
patent: 5393175 (1995-02-01), Courville

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