Cutters – for shaping – Rotary cutting tool – Face or end mill
Reexamination Certificate
2005-01-25
2005-01-25
Fridie, Jr., Willmon (Department: 3722)
Cutters, for shaping
Rotary cutting tool
Face or end mill
C407S054000, C407S034000, C407S063000
Reexamination Certificate
active
06846135
ABSTRACT:
In a radius end mill having a bottom edge formed on the end face thereof, a radius edge designed in a substantially quarter arc shape and formed at a corner portion thereof, and an outer peripheral edge formed spirally on the side surface thereof, the bottom edge and the radius edge being continuously connected to each other at a connecting point A while the radius edge is continuously connected to each other at a connecting point B, when a view taken along a plane that passes through the connecting points A and B and crosses a rake face of the radius edge is represented by an R cross-sectional view, the rake face of the radius edge is designed to have a convex curved line extending from the connecting point A to the connecting point B in the R cross-sectional view.
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Kuroda Takahito
Maeda Katsutoshi
Okanishi Ryosuke
Sakamoto Yasushi
Darby & Darby
Fridie Jr. Willmon
Hitachi Tool Engineering Ltd.
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