Joining system and method of detachably and securely joining two members

A method for detachably tight joining of two generally concentric members which, in their non-deformed state, have at least a partial interference fit, the method comprising the steps of:

• deforming at least one of the members by radial forces during the joining operation;
• positioning the deformed member in the intended joining position with respect to the other member;
• and
• releasing the radial forces whereby a tight joint is created by a subsequent elastic recovery of the deformed member;
• wherein the peripheral contour of the deformable member is provided with some peripheral sections inside the effective peripheral contour of the other member and with other peripheral sections outside the effective peripheral contour;
• the radial forces are exerted on predetermined peripheral sections of the peripheral contour of the deformable member so its effective peripheral contour corresponds to the effective peripheral contour of the other member within a given tolerance;
• and
• after positioning the two members, the peripheral sections that are not exposed to the radial forces are brought in tight press fit with the peripheral contour of the other member by elastic recovery of the deformed member.

A device for mounting a deformable hollow body on a shaft, comprising:

• a housing having a central recess with several press jaws arranged in said recess with an angular offset relative to each other and having a chucking device for forced displacement of said press jaws;
• said press jaws have on their inside peripheral surface at least one projection opposite a peripheral section of the deformable hollow body that is outside the peripheral contour of said recess;
• said chucking device being shaped and configured to produce a pressure that acts radially inward on said press jaws;
• and
• said deformable hollow body having a polygonal inside peripheral contour with arc-shaped inside peripheral sections and curved outside transitional sections that can undergo elastic deformation until they are congruent with the outside peripheral contour of a rigid shaft wherein said deformable hollow body is designed as a cylindrical socket, where the effective inside peripheral contour of said socket is formed with three angularly spaced peripheral sections with a shallow curvature and three transitional curves, said peripheral sections and said transitional curves alternating around the peripheral contour of said socket, said socket being adapted to be deformed to an approximately circular shape by radial forces acting radially inward on said transitional curves, where the largest diameter of the peripheral contour of said deformed socket is slightly larger than the diameter of said shaft.