Drilling and threading tool

Details Drilling and threading tool Drilling and threading tool

1996-06-18

1998-03-31

Briggs, William R.

Gear cutting, milling, or planing

Milling

Thread or helix generating

408222, 470198, 470199, B23C 300, B23G 520

Patent

active

057330786

ABSTRACT:
A drilling and thread-milling tool for generating an internal thread in a workpiece, including a proximal shank portion attachable to a driving device for rotating the tool about a rotation axis thereof, and a distal cutting portion rotated with the shank portion about the rotation axis for generating the internal thread while the distal cutting portion is moved relative to the workpiece. The cutting portion has at least one thread-milling tooth on an outer circumferential surface thereof, each tooth having a configuration similar to that of the internal thread, and a height substantially equal to a depth of the internal thread. The cutting portion further has at least one end-cutting edge on a distal end face thereof so as to extend in a radial direction thereof, each end-cutting edge having a maximum diameter which is larger and smaller than a minor diameter and a major diameter of the thread-milling tooth.

REFERENCES:
patent: 1836954 (1931-12-01), Bryant
patent: 4651374 (1987-03-01), Turchan
patent: 4761844 (1988-08-01), Turchan
patent: 4831674 (1989-05-01), Bergstrom et al.
patent: 4913604 (1990-04-01), Zaengerle
patent: 4930949 (1990-06-01), Giessler
patent: 4943191 (1990-07-01), Schmitt
patent: 5080538 (1992-01-01), Schmitt
patent: 5413438 (1995-05-01), Turchan
patent: 5429459 (1995-07-01), Palm

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