Drill comprising drill body and replaceable drill tip

Details Drill comprising drill body and replaceable drill tip Drill comprising drill body and replaceable drill tip

1989-06-22

1990-08-21

Bilinsky, Z. R.

Cutting by use of rotating axially moving tool

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

Including tool with duct

279 8, 408144, 408230, B23B 5102

Patent

active

049501089

ABSTRACT:
A drill for metal working comprises a drill body and a replaceable drill tip. The drill tip carries cutting elements and is releasably fastened to the drill body by means of fasteners which are provided on opposite sides of the centerline of the drill. A rear surface of the drill tip is provided with a central and at least partially conical, recess which is intended to receive a central tap extending forwardly from a mainly planar front surface of the drill body in order to center the drill tip in relation to the drill body. The tap engages the partially conical recess, and includes an elastic portion enabling the tap to yield axially.

REFERENCES:
patent: 4222690 (1980-09-01), Hosoi
patent: 4565473 (1986-01-01), Hosoi
patent: 4684298 (1987-08-01), Roos
patent: 4856944 (1989-08-01), Reinauer

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