Gear cutting – milling – or planing – Milling – With cutter holder
Reexamination Certificate
2008-05-06
2008-05-06
Howell, Daniel W. (Department: 3722)
Gear cutting, milling, or planing
Milling
With cutter holder
C279S103000
Reexamination Certificate
active
11300915
ABSTRACT:
A shrink fit tool holder includes a shank or body that includes a tool holder portion, a flange member, a tapered outer surface that generally corresponds to a tapered bore of a spindle, and a central bore or aperture for accommodating a cutting tool. The central bore includes a plurality of grooves formed in a predetermined pattern that decrease a surface contact area between the tool holder portion and the cutting tool, thereby reducing an amount of conductive heat transfer between the tool holder portion and the cutting tool. As a result, there is less expansion in the tool shank relative to the tool holder.
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Howell Daniel W.
Kennametal Inc.
Meenan Larry R.
LandOfFree
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