Metal tools and implements – making – Blank or process – Drill
Patent
1994-02-25
1995-09-26
Watts, Douglas D.
Metal tools and implements, making
Blank or process
Drill
175393, 1754201, B21K 502
Patent
active
054526280
ABSTRACT:
A drill bit for drilling holes in a work surface including a hard wear-resistant insert and a metal body including a top working surface of an irregular surface configuration having a slot for retaining the hard wear-resistant insert. The body having a metal grain structure substantially parallel with the contour of the body. In a preferred embodiment the body is formed by cold-heading.
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Metals Handbook, 8th Edision, vol. 4, "Forming" American Society for metal, pp. 465-475.
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Elam James E.
Ewing Paul E.
Montgomery, Jr. Robert H.
Sheirer Daniel C.
Kennametal Inc.
Prizzi John J.
Watts Douglas D.
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