Extrusion tool for producing hard-metal or ceramic drill blank

Details Extrusion tool for producing hard-metal or ceramic drill blank Extrusion tool for producing hard-metal or ceramic drill blank

1986-10-30

1988-10-25

Larson, Lowell A.

Metal deforming

By extruding through orifice

Expressing non-uniform cross-section or non-linear product

72264, 72269, 76 5R, 76108T, 408144, B21C 2504, B21C 2314

Patent

active

047794402

ABSTRACT:
An extruded drill blank which has uniform pitch of grooves or lands on the circumference thereof and flushing bores of uniform diameter. A tool and process for producing the extruded drill blank comprises heating a hard metal or ceramic material to the extrusion temperature thereof, pressing the heated metal or ceramic material through the space defined by a mandrel and a nozzle and twisting the blank helically during the extrusion, whereby the billet is guided in the direction of the extrusion by at least one land or groove extending helically and provided on the inside surface of the nozzle, and contemporaneously forming bores on the blank with at least one elastic center pin secured onto the mandrel and spaced apart by a spacing corresponding to the flushing bore; the mandrel terminating prior to the nozzle, and the center pin protruding into the nozzle interior and having a diameter corresponding to the diameter of the flushing bores.

REFERENCES:
patent: 1325301 (1919-12-01), Levy
patent: 2422994 (1947-06-01), Taylor
patent: 2859869 (1958-11-01), Nolf
patent: 2954121 (1960-09-01), Benson
patent: 3186210 (1965-06-01), Lesher et al.
patent: 3242712 (1966-03-01), Dalton
patent: 3267712 (1966-08-01), Atkin
patent: 3555935 (1971-01-01), Dorrenberg
patent: 4059031 (1977-11-01), Erdelyi
patent: 4704055 (1987-11-01), Guhring

Affiliated with

Also associated with

Rating

Extrusion tool for producing hard-metal or ceramic drill blank does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Extrusion tool for producing hard-metal or ceramic drill blank, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extrusion tool for producing hard-metal or ceramic drill blank will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2261902