Cutting by use of rotating axially moving tool – Tool or tool with support – Having peripherally spaced cutting edges
Reexamination Certificate
2007-04-10
2007-04-10
Carter, Monica S. (Department: 3722)
Cutting by use of rotating axially moving tool
Tool or tool with support
Having peripherally spaced cutting edges
C408S227000, C408S059000
Reexamination Certificate
active
10307224
ABSTRACT:
A twist drill and method for producing is provided. The cutting edge structure has a first portion at the drill tip portion and a second portion disposed away from the drill tip portion. The flute wall extends further into the land structure at the second portion of the cutting edge structure than at the tip portion to provide a greater amount of drill material at the tip portion than at the second portion of the cutting edge structure. The flute wall extends further into the land structure at the second portion of the cutting edge structure than at the tip portion to provide a greater flute volume per length at the second portion of the cutting edge structure than at the drill tip portion.
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Müke, K., Fünfachsige Schleifprogramme automatisch generieren (Automatically Generate Five-Axis Grinding Programs), Werkstatt und Betrieb, 130 (1997), pp. 42-45.
Borschert Bernhard
Mühlfriedel Dieter
Schwägerl Jürgen
Carter Monica S.
Kennametal Inc.
Nils H. Ljungman & Associates
Williams J
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