Rotary drive design
First Claim
1. A rotary drive having:
- a drive cavity defined by a side wall, the side wall being intended for contact with a counter element during the rotary drive having a substantially cylindrical basic shape,wherein a distance of the side wall from a center axis of the drive cavity varies between a minimum radius and a maximum radius for formation of alternating projections and recesses, andwherein the side wall is situated in a region lying in a radial direction between the maximum and minimum diameter of the drive cavity, on a respective conical surface of a respective cone tapering into an interior of the drive cavity,a cone axis of which cone is outwardly offset in the radial direction in relation to the axis of the drive cavity, the cone axis of which cone is outwardly offset in the radial direction in relation to the axis of the drive cavity.
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Accused Products
Abstract
A design for a rotary drive both for a tool and for a workpiece to be rotationally driven is proposed. This rotary drive design contains a cylindrical basic shape which deviates from a circular cylindrical shape. The contour or the cross section through this basic shape has a plurality of rounded projections and rounded recesses arranged between said projections. The projections tangentially touch a circle having a maximum radius, while the recesses, for their part, tangentially touch a circle having a minimum radius. Deviating from this cylindrical basic shape, in the regions between the projections are configured conical surfaces, which are not instrumental in the transmission of torques, but take care of centering and alignment between the tool and the workpiece.
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Citations
22 Claims
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1. A rotary drive having:
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a drive cavity defined by a side wall, the side wall being intended for contact with a counter element during the rotary drive having a substantially cylindrical basic shape, wherein a distance of the side wall from a center axis of the drive cavity varies between a minimum radius and a maximum radius for formation of alternating projections and recesses, and wherein the side wall is situated in a region lying in a radial direction between the maximum and minimum diameter of the drive cavity, on a respective conical surface of a respective cone tapering into an interior of the drive cavity, a cone axis of which cone is outwardly offset in the radial direction in relation to the axis of the drive cavity, the cone axis of which cone is outwardly offset in the radial direction in relation to the axis of the drive cavity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A rotary drive in a form of a drive projection, having
a side wall intended for contact with a counter element during a rotary drive action that has a substantially cylindrical basic shape, wherein the distance of the side wall from a center axis of the drive projection varies between a minimum radius and a maximum radius for formation of alternating projections and recesses, and wherein the side wall is situated in a region lying in a radial direction between the maximum and minimum diameter of the drive projection, on a respective conical surface of a respective cone tapering, in the direction of the end of the drive projection, a cone axis of which cone is outwardly offset in the radial direction in relation to the center axis of the drive projection.
Specification