Matched equilibrium gear mechanism
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorJustin R. Helton
Life of this patent
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Abstract
A method is provided for producing gears to balance counteracting gravity moment and a torque equilibrator across an elevation range. The method includes assigning a value to summation of pitch radii of the first and second non-circular gears; calculating a torque for both the non-circular gears for an angle within the elevation range; calculating a first pitch radius of the first non-circular gear by the gravity moment and the torsion equilibrator; calculating a second pitch radius of the second non-circular gear from the summation; and fabricating the non-circular gears based on the first and second pitch radii.
Claims4
A method for producing first and second non-circular gears to balance counteracting gravity induced torque and a torsion equilibrator spring across an elevation range, said method comprising:
- assigning a radial sum for both pitch radii of the first and second non-circular gears;
- calculating a torque for both the non-circular gears for an elevation angle within the elevation range;
- calculating a first pitch radius of the first non-circular gear by the gravity induced torque and the torsion equilibrator spring for said elevation angle;
- calculating a second pitch radius of the second non-circular gear by subtracting said first pitch radius from said radial sum for said elevation angle;
- repeating said calculating operations for a plurality of elevation angles across the elevation range;
- producing first and second profiles corresponding to said first and second pitch radii along said plurality of elevation angles;
- and
- fabricating the non-circular gears based on said first and second profiles.
Dependencies are inferred from the claim text.