Gear-forming cutter
AssigneeAsia Optical Co., Inc.
InventorsSheng-Jui Chao, Tsu-Meng Lee
Life of this patent
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Abstract
A gear-forming cutter for forming a gear tooth on a non-metallic blank includes a spindle and a blade portion. The blade portion extends from the spindle along an axis of the spindle, and includes a blade surface and a surrounding surface. The blade surface has front and rear sides, and opposite first and second lateral sides. The surrounding surface is disposed around the axis, and extends from the first lateral side to the second lateral side. Any point of the first lateral side is spaced apart from the axis by a first radial distance. Any point of the second lateral side is spaced apart from the axis by a second radial distance smaller than the corresponding first radial distance. The first radial distance corresponding to the rear side is larger than that corresponding to the front side.
Claims5
A gear-forming cutter for forming at least one gear tooth on a gear blank, the gear tooth including two flanks having a non-linear contour, said gear-forming cutter comprising:
- a spindle having a pair of first and second end surfaces that are opposite to each other along an axis of said spindle;
- and
- a blade portion extending from said first end surface of said spindle along said axis and including a blade surface, a surrounding surface and a front end surface, said blade surface having a front side, a rear side opposite to said front side and located on said first end surface of said spindle, and a pair of opposite first and second lateral sides interconnecting said front and rear sides, said first lateral side having a shape which is adapted to correspond to the contour of the flanks of the gear tooth, said surrounding surface being disposed around said axis and extending from said first lateral side to said second lateral side, any point of said first lateral side of said blade surface being spaced apart from said axis by a first radial distance, any point of said second lateral side of said blade surface being spaced apart from said axis by a second radial distance, which is smaller than a corresponding one of said first radial distances, said first radial distance corresponding to said rear side of said blade surface being larger than that corresponding to said front side of said blade surface.
Dependencies are inferred from the claim text.