Extrusion tool for producing a drill bit blank

Details Extrusion tool for producing a drill bit blank Extrusion tool for producing a drill bit blank

1988-05-02

1989-05-23

Spruill, Robert L.

Metal deforming

By extruding through orifice

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

72264, 72269, B21C 2504, B21C 2314

Patent

active

048318590

ABSTRACT:
An extrusion tool for making a drill bit blank provided with an internal rinsing bore extending helically in a longitudinal direction of the drill bit blank, includes a nozzle having an inner wall defining a throughgoing axial bore through which a malleable material is passed in a direction of extrusion parallel to the tool axis. The axial bore forms an inlet portion and a mold chamber adjoining the inlet portion downstream thereof as viewed in the direction of extrusion. There is further provided a mandrel situated in the inlet portion; a resiliently deformable wire supported by the mandrel and projecting into the mold chamber; and a helical device provided on the inner wall in the mold chamber for twisting the malleable material as it passes through the mold chamber. There is further provided a clamping device having a tightened state for immobilizing the nozzle and the mandrel with respect to one another during extrusion operation. In the loosened state of the clamping device a positional adjustment of the nozzle with respect to the mandrel may be made.

REFERENCES:
patent: 1325301 (1919-12-01), Levy
patent: 2422994 (1947-06-01), Taylor
patent: 2954121 (1960-09-01), Benson
patent: 3186210 (1965-06-01), Lesher et al.
patent: 3190101 (1965-06-01), Caisley
patent: 3242712 (1966-03-01), Dalton
patent: 3302440 (1967-02-01), Seidel et al.
patent: 3363469 (1966-08-01), Seidel
patent: 4059031 (1977-11-01), Erdelyi
patent: 4779440 (1988-10-01), Cleve et al.

Affiliated with

Also associated with

Rating

Extrusion tool for producing a drill bit 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 a drill bit blank, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extrusion tool for producing a drill bit blank will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1722103