Method of securing parts to a hollow member

In a method of securing one or more parts, each of which is provided with an opening and at least one of which is a cam or other drive element able to transmit torque, to a hollow member, whereby in the starting state, the inner diameter of the opening of said parts is greater than the outer diameter of the surface provided on said hollow member for securing said part, and whereby said parts are placed supported via support surfaces of a matrix in the prescribed position along segments on said hollow member prior to the securing operation, the improvement therewith comprising in sequence the steps of:

• prior to placing said parts on said hollow member, producing a temperature difference by heating said parts and/or by cooling said hollow member;
• placing said parts subjected to said temperature differences on said hollow member;
• and supporting the outer surfaces of said parts as well as the regions of said hollow member disposed between said parts via the support surfaces of said matrix;
• and
• securing each of said parts to said hollow member by widening and expanding the securing regions of said hollow member, and followed by a subsequent shrink fitting of said parts onto said hollow member as a consequence of allowing temperature equalization to occur.