Drilling tool

Details Drilling tool Drilling tool

1996-06-21

1998-07-21

Bishop, Steven C.

Cutting by use of rotating axially moving tool

With means to apply transient, fluent medium to work or product

Including tool with duct

408 83, 408229, 408230, B23B 5106, B23B 5100

Patent

active

057825874

ABSTRACT:
The invention relates to a drilling tool (11) for bores in solid material, comprising a drill shank (26) which has a radially inner indexable insert (13) at an inner chip space (21) and a radially outer indexable insert (14) at an outer chip space (22), the working areas of which indexable inserts (13, 14) overlap, the inner chip space (21) having a cover (36) which extends at least partly along the shank longitudinal axis (20), and the inner chip space (21) merging into the outer chip space (22), so that the chip discharge is effected via a common chip space (23) in the rear area (32) of the drilling tool (11).

REFERENCES:
patent: 1104989 (1914-07-01), Hanson
patent: 4340327 (1982-07-01), Martins
patent: 4966503 (1990-10-01), Davidson
patent: 5354156 (1994-10-01), Von Haas et al.

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