Drilling tool for drilling in solid metal

Details Drilling tool for drilling in solid metal Drilling tool for drilling in solid metal

1999-06-09

2000-12-26

Bishop, Steven C.

Cutting by use of rotating axially moving tool

Tool or tool with support

Having stepped cutting edges

407114, 408230, 408233, 408713, B23B 5102

Patent

active

061648795

ABSTRACT:
Proposed is a drilling tool for drilling in solid material, having a base body (1) containing chip flutes (5, 5a) and at least two interchangeable inserts (3, 3a) at the face of the base body (1). The inserts are arranged on the base body at different radial distances such that their working ranges partially overlap. The blades (12) of the inserts (3, 3a) are formed by two cutting edges (8, 9) which together form an obtuse angle, that is the point angle (11). The face (13) of the blades (12) has parallel profile ribs (14, 14a) which act as runners and which in the region of the cutting edges (8, 9), aligned in the direction of chip removal, extend radially inwards over a curved course relative to their installed position, toward a flank region (17) of the insert (3, 3a) near the drilling tool axis (7).

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patent: 5810520 (1998-09-01), Hintze et al.
patent: 5873683 (1999-02-01), Krenzer
patent: 5967710 (1999-10-01), Krenzer

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