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AssigneeZhuzhou Cemented Carbide Cutting Tools Co., Ltd.
InventorsJin Xu, Shuzhang Fang, Shequan Wang, Ping Li
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An unequal helix-angle end mill includes a cutting part and a handle part. The cutting part is provided with a plurality of flutes, each spirally extending from the bottom end to the handle part. The face of each flute facing the cutting rotation direction is a rake face, wherein the rake face and an outer peripheral face of the cutting part are intersected to form an outer peripheral blade, and the helix-angle of at least one of the peripheral blades is different from those of the other peripheral blades. A face joined with the peripheral blade among the outer peripheral face of the cutting part is a rear face. The width B of the edge flap of each peripheral blade is equal on a plane orthogonal to a rotating axis of the end mill. The unequal helix-angle end mill has high strength, and enhances the cutting depth and durability.
An unequal helix-angle end mill comprising a cutting part and a handle part, wherein said entire cutting part is provided with a plurality of flutes, wherein each of said flutes spirally extends from a bottom end of said cutting part to said handle part, wherein a face of each flute facing a cutting rotation direction is a rake face, wherein said rake face and an outer peripheral face of said cutting part are intersected to form an outer peripheral blade, wherein a helix-angle of at least one of said peripheral blades is different from those of the other peripheral blades, wherein a face joined with said peripheral blade among said outer peripheral face of said cutting part is a rear face, wherein the width B of an edge flap of each of said peripheral blades is equal on a plane orthogonal to a rotating axis of said end mill.
Dependencies are inferred from the claim text.