The construction, operating principle and static calculation of cardan transmission flexible shaft

The construction and operating principle of cardan flexible shafts are shown from the point of view of their deformation when a torque is transmitted through a cardan joint to a cylindrical pipe-sleeve and profile sleeve connected with it, and further through the profile joint of triangular, square, hexagonal or some other rational cross section to the rest of the shaft. The increase in the torque results in deformation of the profile sleeve due to the expansion of its edges and U-shaped vertices of a triangle or square or hexagon, or some other rational cross section. The profile sleeve deformation during transmission of the torque through the profile joint of triangular or square or hexagonal or some other rational cross section has been considered. The calculation has been given for the profile and movable in the axial direction connection of two parts of cardan shaft transmission under bending deformation conditions on the edge of the profile sleeve. The calculation formulas being derived, it is assumed that after applying the torque the load is distributed on the half of the edge by law of the triangle, the side surfaces of the profile sleeve deform equally, the load acts on the edges and in the plane of the profile sleeve that is perpendicular to the axis of rotation and is permanent lengthwise