Strain wave gear and elastic transmission element therefor, robotic arm and method for arranging a strain gauge
AssigneeSchaeffler Technologies AG & Co. KG
InventorsJochen Damerau, Jens Heim
Life of this patent
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Abstract
An elastic transmission element is used in a strain wave gear. Such strain wave gears are also referred to as Harmonic Drives. The elastic transmission element is also referred to as a flexspline. Outer toothing is formed on the elastic transmission element. Furthermore, at least one strain gauge for measuring a mechanical strain of the elastic transmission element is arranged on the elastic transmission element. The at least one strain gauge is formed as a coating directly on a metallic surface of the elastic transmission element.
Claims14
An elastic transmission element of a strain wave gear, wherein an outer toothing is formed on the elastic transmission element, and wherein at least one strain gauge for measuring a mechanical strain of the elastic transmission element is arranged on the elastic transmission element, wherein the at least one strain gauge is formed as a coating directly on a metallic surface of the elastic transmission element.
A method for arranging a strain gauge on an elastic transmission element of a strain wave gear, wherein an outer toothing is formed on the elastic transmission element, and wherein the strain gauge is applied as a coating directly to a metallic surface of the elastic transmission element.
A transmission element of a strain wave gear, the transmission element comprising:
- an annular flange portion adapted for fixation to a shaft;
- an elastic bushing-shaped portion fixed at a first axial end to the flange portion and having external toothing formed at a second axial end opposite the first axial end;
- and
- a plurality of strain sensors formed as a coating on the bushing-shaped portion and circumferentially spaced from one another.
Dependencies are inferred from the claim text.