Drill

Details Drill Drill

1986-05-16

1987-08-04

Weidenfeld, Gil

Cutting by use of rotating axially moving tool

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

Including tool with duct

408199, 408231, 408239R, 408713, B23B 5102

Patent

active

046842985

ABSTRACT:
The invention relates to a drill for metal drilling, comprising a drill body and a drill tip provided with cutting portions. The drill tip is detachably secured to the drill body by means of fastening devices, which are arranged on opposite sides of the centerline (CL) of the drill. The planar lower face of the drill tip is provided with a central tap which engages in a central recess in the mainly planar front surface of the drill body in order to center the drill tip relative to the drill body. A central fluid passage is formed in the drill body, which transforms into eccentrically arranged fluid passages in the drill tip. The fastening devices form at least partly walls in the eccentrical fluid passages.

REFERENCES:
patent: 1746716 (1930-02-01), Sasse
patent: 2237901 (1941-04-01), Chun
patent: 2640378 (1953-06-01), Haggar
patent: 3085453 (1963-04-01), Mossberg
patent: 4222690 (1980-09-01), Hosoi
patent: 4565473 (1986-01-01), Hosoi

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