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US 6,964,210 B2Granted
Gear tooth profile
AssigneeGenesis Partners, L.P.
InventorJohn R. Colbourne
Life of this patent
Estimating the term…
Abstract
A gear and method for producing the gear. The gear has a gear tooth profile conjugate to a gear basic-cutter tooth-profile having an addendum with a convex portion having an addendum point proximal to a pitch line and a dedendum with a concave portion having a dedendum point proximal to the pitch line. The convex portion is complementary with a corresponding portion of a mating-gear basic-cutter tooth-profile dedendum. The concave portion is complementary with a corresponding portion of the mating-gear basic-cutter tooth-profile addendum. A transition zone between the addendum point and the dedendum point has a predetermined width. The gear basic-cutter tooth-profile has a predetermined half pitch relief at the pitch line and continuity of profile and continuity of slope at the addendum point.
Claims8
A gear for mating with a mating gear having a plurality of mating-gear teeth each having a mating-gear tooth profile conjugate to a mating-gear basic-cutter tooth profile including a mating-gear basic-cutter tooth-profile addendum, a mating-gear basic-cutter tooth-profile dedendum, and a mating-gear basic-cutter tooth-profile transition zone between the mating-gear basic-cutter tooth-profile addendum and the mating-gear basic-cutter tooth-profile dedendum, the gear comprising a plurality of gear teeth each having a gear tooth profile comprising:
- a gear tooth-profile addendum;
- a gear tooth-profile dedendum;
- and
- a gear tooth-profile transition zone between the gear tooth-profile addendum and the gear tooth-profile dedendum,
- wherein the gear tooth profile is conjugate to a gear basic-cutter tooth-profile intersecting a gear basic-cutter pitch line at a gear basic-cutter pitch point, the gear basic-cutter tooth profile comprising:
- a gear basic-cutter tooth-profile addendum having a tip point distal to the gear basic-cutter pitch line, the gear basic-cutter tooth-profile addendum conjugate to the gear tooth-profile dedendum;
- a gear basic-cutter tooth-profile convex portion in the gear basic-cutter tooth-profile addendum and complementary with a corresponding portion of the mating-gear basic-cutter tooth-profile dedendum, the gear basic-cutter tooth-profile convex portion having a gear basic-cutter tooth-profile addendum point proximal to the gear basic-cutter pitch line;
- a gear basic-cutter tooth-profile dedendum having a limit point distal to the gear basic-cutter pitch line, the gear basic-cutter tooth-profile dedendum conjugate to the gear tooth-profile addendum;
- a gear basic-cutter tooth-profile concave portion in the gear basic-cutter tooth-profile dedendum and complementary with a corresponding portion of the mating-gear basic-cutter tooth-profile addendum, the gear basic-cutter tooth-profile concave portion having a gear basic-cutter tooth-profile dedendum point proximal to the gear basic-cutter pitch line;
- and
- a gear basic-cutter tooth-profile transition zone between the gear basic-cutter tooth-profile addendum point and the gear basic-cutter tooth-profile dedendum point, the gear basic-cutter tooth-profile transition zone having a predetermined gear basic-cutter tooth-profile transition-zone width,
- wherein the gear basic-cutter tooth-profile has a predetermined gear basic-cutter tooth-profile half pitch relief at the gear basic-cutter pitch line and continuity of profile and continuity of slope at the gear basic-cutter tooth-profile addendum point,
- wherein the gear basic-cutter tooth-profile addendum has an addendum portion having an addendum-portion shape and an addendum-portion thickness, the addendum portion extending from the tip point to the addendum point, the addendum-portion shape at least substantially identical to a corresponding portion of a reference addendum of a reference gear basic-cutter tooth profile further comprising a linear reference transition zone between the reference addendum and a reference dedendum having a reference-dedendum thickness, the reference addendum having a reference-addendum thickness, the addendum-portion thickness less than the reference-addendum thickness by about twice the predetermined half pitch relief, and
- wherein the gear basic-cutter tooth-profile dedendum has a dedendum portion having a dedendum-portion shape and a dedendum-portion thickness, the dedendum portion extending from the limit point to the pitch line, the dedendum-portion shape at least substantially identical to a corresponding portion of the reference dedendum, the dedendum thickness more than the reference-dedendum thickness by about twice the predetermined half pitch relief.
11 more elements
A gear pair comprising a first gear and a second gear,
- the first gear comprising a plurality of first gear teeth each having a first gear tooth profile comprising:
- a first gear tooth-profile addendum;
- a first gear tooth-profile dedendum;
- and
- a first gear tooth-profile transition zone between the first gear tooth-profile addendum and the first gear tooth-profile dedendum,
- wherein the first gear tooth profile is conjugate to a first gear basic-cutter tooth-profile intersecting a first gear basic-cutter pitch line at a first gear basic-cutter pitch point, the first gear basic-cutter tooth profile comprising:
- a first gear basic-cutter tooth-profile addendum having a first tip point distal to the gear basic-cutter pitch line, the first gear basic-cutter tooth-profile addendum conjugate to the first gear tooth-profile dedendum;
- a first gear basic-cutter tooth-profile convex portion in the first gear basic-cutter tooth-profile addendum, the first gear basic-cutter tooth-profile convex portion having a first gear basic-cutter tooth-profile addendum point proximal to the first gear basic-cutter pitch line;
- a first gear basic-cutter tooth-profile dedendum having a first limit point distal to the first gear basic-cutter pitch line, the first gear basic-cutter tooth-profile dedendum conjugate to the first gear tooth-profile addendum;
- a first gear basic-cutter tooth-profile concave portion in the first gear basic-cutter tooth-profile dedendum, the first gear basic-cutter tooth-profile concave portion having a first gear basic-cutter tooth-profile dedendum point proximal to the first gear basic-cutter pitch line;
- and
- a first gear basic-cutter tooth-profile transition zone between the first gear basic-cutter tooth-profile addendum point and the first gear basic-cutter tooth-profile dedendum point, the first gear basic-cutter tooth-profile transition zone having a predetermined first gear basic-cutter tooth-profile transition-zone width,
- wherein the first gear basic-cutter tooth-profile has a predetermined first gear basic-cutter tooth-profile half pitch relief at the first gear basic-cutter pitch line and continuity of profile and continuity of slope at the first gear basic-cutter tooth-profile addendum point,
- wherein the first gear basic-cutter tooth-profile addendum has a first addendum portion having a first addendum-portion shape and a first addendum-portion thickness, the first addendum portion extending from the first tip point to the first gear basic-cutter tooth-profile addendum point, the first addendum-portion shape at least substantially identical to a corresponding portion of a first reference addendum of a first reference gear basic-cutter tooth profile further comprising a first linear reference transition zone between the first reference addendum and a first reference dedendum having a first reference-dedendum thickness, the first reference addendum having a first reference-addendum thickness, the first addendum-portion thickness less than the first reference-addendum thickness by about twice the predetermined half pitch relief, and
- wherein the first gear basic-cutter tooth-profile dedendum has a first dedendum portion having a first dedendum-portion shape and a first dedendum-portion thickness, the first dedendum portion extending from the first limit point to the first pitch line, the first dedendum-portion shape at least substantially identical to a corresponding portion of the first reference dedendum, the first dedendum thickness more than the first reference-dedendum thickness by about twice the predetermined half pitch relief,
- the second gear comprising a second plurality of second gear teeth each having a second gear tooth profile comprising:
- a second gear tooth-profile addendum;
- a second gear tooth-profile dedendum;
- and
- second gear tooth-profile transition zone between the second gear tooth-profile addendum and the second gear tooth-profile dedendum,
- wherein the second gear tooth profile is conjugate to a second gear basic-cutter tooth-profile intersecting a second gear basic-cutter pitch line at a second gear basic-cutter pitch point, the second gear basic-cutter tooth profile comprising:
- a second gear basic-cutter tooth-profile addendum having a second tip point distal to the second gear basic-cutter pitch line, the second gear basic-cutter tooth-profile addendum conjugate to the second gear tooth-profile dedendum;
- a second gear basic-cutter tooth-profile convex portion in the second gear basic-cutter tooth-profile addendum and complementary with a corresponding portion of the first gear basic-cutter tooth-profile dedendum, the second gear basic-cutter tooth-profile convex portion having a second gear basic-cutter tooth-profile addendum point proximal to the second gear basic-cutter pitch line;
- a second gear basic-cutter tooth-profile dedendum having a second limit point distal to the second gear basic-cutter pitch line, the second gear basic-cutter tooth-profile dedendum conjugate to the second gear tooth-profile addendum;
- a second gear basic-cutter tooth-profile concave portion in the second gear basic-cutter tooth-profile dedendum and complementary with a corresponding portion of the first gear basic-cutter tooth-profile addendum, the second gear basic-cutter tooth-profile concave portion having a second gear basic-cutter tooth-profile dedendum point proximal to the second gear basic-cutter pitch line;
- and
- a second gear basic-cutter tooth-profile transition zone between the second gear basic-cutter tooth-profile addendum point and the second gear basic-cutter tooth-profile dedendum point, the second gear basic-cutter tooth-profile transition zone having a predetermined second gear basic-cutter tooth-profile transition-zone width,
- wherein the second gear basic-cutter tooth-profile has a predetermined second gear basic-cutter tooth-profile half pitch relief at the second gear basic-cutter pitch line and continuity of profile and continuity of slope at the second gear basic-cutter tooth-profile addendum point,
- wherein the second gear basic-cutter tooth-profile addendum has a second addendum portion having a second addendum-portion shape and a second addendum-portion thickness, the second addendum portion extending from the second tip point to the second addendum point, the second addendum-portion shape at least substantially identical to a corresponding portion of a second reference addendum of a second reference gear basic-cutter tooth profile further comprising a second linear reference transition zone between the second reference addendum and a second reference dedendum having a second reference-dedendum thickness, the second reference addendum having a second reference-addendum thickness, the second addendum-portion thickness less than the second reference-addendum thickness by about twice the predetermined second half pitch relief, and
- wherein the second gear basic-cutter tooth-profile dedendum has a second dedendum portion having a second dedendum-portion shape and a second dedendum-portion thickness, the second dedendum portion extending from the second limit point to the second pitch line, the second dedendum-portion shape at least substantially identical to a corresponding portion of the second reference dedendum, the second dedendum thickness more than the second reference-dedendum thickness by about twice the predetermined second half pitch relief.
27 more elements
Dependencies are inferred from the claim text.