Spherical cutting tool
AssigneeYG-I Co., Ltd.
InventorYoung Bae Lee
Life of this patent
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Abstract
A spherical cutting tool such as a ball end mill, a tapered ball end mill and the like is disclosed, in which cutting edges are formed on a spherical surface. The tangential lines of the respective points of the cutting edges on a spherical surface are made to have a constant (helix) angle relative to the axis of the tool. A tooth can be formed with an eccentric relief, and the tooth reinforced with a smaller relief angle and a wider land width. Therefore, the tool can be operated at a higher feed rate, thereby making it possible to improve the machining efficiency.
Claims14
A spherical cutting tool, comprising:
- a body having a central axis;
- a spherical surface;
- and
- at least one cutting edge formed on said spherical surface, wherein tangential lines of points on said at least one cutting edge have a constant helix angle relative to said central axis.
A method of improving strength and efficiency of a spherical cutting tool having a body with a central axis, a spherical surface, and at least one cutting edge on said spherical surface, comprising:
- providing a constant helix angle for said cutting edge relative to said axis;
- and
- providing an eccentric relief with a reduced relief angle to increase a land width.
Dependencies are inferred from the claim text.