Cutting tool with enhanced chip evacuation capability and method of making same
AssigneeKennametal Inc.
InventorsLeonid Boris Sharivker, Sergei Vladimir Boulakhov
Life of this patent
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Abstract
A milling cutter having a shank and a cutting head attached to the shank. The cutting head has a plurality of helical teeth, each tooth including a cutting tip, a leading face and a rear face. A flute is defined between the leading face of a trailing tooth, and a rear face of an immediately preceding tooth. A gully of the flute is generally W-shaped in cross section to provide effective chip evacuation. A method for manufacturing the milling cutter with the W-shaped gully of the flute using a split path grinding process is also disclosed.
Claims21
1-12. (canceled)
A method of manufacturing a milling cutter, said method comprising:
- providing a grinding wheel which has a predetermined profile and is rotatable about an axis different from a longitudinal axis of the milling cutter;
- using the grinding wheel to grind a helical flute into an outer periphery of a cutter blank, via at least a first grinding path and a subsequent, second grinding path;
- wherein, via said first grinding path, the grinding wheel produces a leading face of a first tooth, and a first flute base;
- wherein, via said second grinding path, the grinding wheel produces a second flute base and thereby imparts a generally W-shaped cross-section to the helical flute.
Dependencies are inferred from the claim text.