Patent ID: 8910365

Claim:
A method of producing a steering spindle portion forming a section of a steering spindle, which steering spindle portion, at least in an end region, includes a reinforcement section over which the steering spindle portion has a wall thickness (D) greater than a wall thickness of another section of the steering spindle portion, the another section of the steering spindle portion adjoining the reinforcement section in a direction toward a longitudinal center of the steering spindle portion, the steering spindle portion comprises a tube and a sleeve disposed in the reinforcement section of the steering spindle portion and forming the enlarged wall thickness (D), said method comprising: forming the reinforcement section of the steering spindle portion by axially sliding the sleeve over an end section of the tube, and subsequently widening the tube at least over a portion of the length of the end section of the tube encompassed by the sleeve and to thereby plastically deform the tube and thereby elastically and plastically deform the sleeve; and providing connection elements which serve for the connection of the steering spindle portion with a steering wheel or a yoke forming a universal joint or a steering pinion, at least a portion of the connection elements being located in the reinforcement section reinforced by the sleeve.