Drill with secondary cutter

Cutting by use of rotating axially moving tool – Tool or tool with support – Having stepped cutting edges

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Details

407 49, 407104, 408232, B23B 5110

Patent

active

047952903

ABSTRACT:
A drill provided with means for effecting a secondary cutting function, such as chamfering, counterboring and/or countersinking. The drill (10) comprises chip flutes, lands (14) and a cutting tip (11). Said means comprise a cylindrical tooth (12) provided with a cutting edge (13) and a pin (17). The land (14) is provided with two holes (15,18) which receive the tooth and the pin.

REFERENCES:
patent: 1332736 (1920-03-01), McQueston
patent: 1461548 (1923-07-01), West
patent: 3940214 (1976-02-01), Waschek
patent: 4343577 (1982-08-01), Purdon

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