Method of producing a transverse force bolt and transverse force bolt produced by this method
AssigneePecon AG
InventorsErich Muller, Gottfried Breuer
Life of this patent
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Abstract
A method for producing a transverse force bolt having a sheath made of a rod-shaped pipe of stainless steel which is drawn onto a rod-shaped core of conventional structural steel. In the process the exterior dimension is simultaneously calibrated. The rod-shaped semi-finished product is subsequently cut into rods, such as with a saw. With a hydraulic press the core is pushed out of the rod by a length and the ejected portion is cut off. Subsequently the core is pushed back by one-half the length of the cut-off portion and the open ends of the sheath are closed. The method produces a transverse force bolt of particularly great strength, which is very precise and has an extremely low cost.
Claims5
A method for producing a transverse force bolt having a steel core (1) and a sheath (2) of stainless steel, comprising the steps:
- dimensionally drawing-in, substantially free of play, the steel core (1) of non-stainless steel into a tube of stainless steel which forms the sheath (2) and thereby forming a rod;
- cutting the rod to a desired transverse force bolt size;
- partially ejecting the core (1) from the sheath (2) and cutting off an ejected portion (5) of the core (1);
- pushing the core (1) back by one-half of a length of the cut off ejected portion (5);
- and
- closing open sheath ends (6) of the sheath (2).
Dependencies are inferred from the claim text.