Cold-headed and roll-formed pick type cutter body with carbide i

Details Cold-headed and roll-formed pick type cutter body with carbide i Cold-headed and roll-formed pick type cutter body with carbide i

1985-04-04

1986-12-09

Novosad, Stephen J.

Mining or in situ disintegration of hard material

Cutter tooth or tooth head

299 86, 175410, 175411, 72356, 72377, 72 68, 72 69, 76101A, E21C 3518, B21K 501

Patent

active

046276653

ABSTRACT:
A pick type bit is disclosed with an improved socket for a carbide insert. The cutter body of the bit is cold-headed from a steel blank to provide a cylindrical shank and a conical head with a socket in the forward end. The cylindrical shank is roll-formed to provide a retaining groove and an intermediate section is roll-formed to provide an extraction groove between the head and the shank. The cold-heading includes an initial step of squaring-up the forward end of the blank by cold-heading it into cylindrical shape with a flat forward end and then punching the socket. This provides a socket of densified work-hardened steel. The bit is completed by brazing the base of a carbide insert in mating relation with the socket in the head.

REFERENCES:
patent: 2748464 (1956-06-01), Kaul
patent: 2748932 (1956-06-01), Kaul
patent: 2819629 (1958-01-01), Robinson
patent: 2829431 (1958-04-01), Brauchler
patent: 3356418 (1967-12-01), Healey et al.
patent: 3499685 (1970-03-01), Kniff
patent: 3631706 (1972-01-01), Archer et al.
patent: 3712099 (1973-01-01), Elsbett et al.
patent: 3796464 (1974-03-01), Hansen et al.
patent: 4078415 (1978-03-01), Koch et al.
patent: 4485655 (1984-12-01), Ewing

Affiliated with

Also associated with

Rating

Cold-headed and roll-formed pick type cutter body with carbide i does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cold-headed and roll-formed pick type cutter body with carbide i, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cold-headed and roll-formed pick type cutter body with carbide i will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1381881