Hollowshaft and method for the production thereof

Details Hollowshaft and method for the production thereof Hollowshaft and method for the production thereof

1992-07-06

1993-11-09

Luong, Vinh T.

Machine element or mechanism

Elements

Cams

29523, 295221, 298881, 123 906, F16H 5300, B21D 3900

Patent

active

052592685

ABSTRACT:
A hollow shaft with torque-transmitting structural elements such as toothed gears, cams, disc cams, etc., is optionally provided with secondary shaping elements, such as bearing points, stop faces, hexagonal or ring contours, etc. The new shaft is formed from a starting pipe with a substantially uniform wall thickness, which is widened for the positive (form locking) and non-positive (force-fit) connection to the structural elements and for shaping the secondary shaping elements by internal pressure. The maximum widening of the pipe is under the structural elements or on the secondary shaping elements. The new hollow shaft is characterized in that the wall thickness of pipe (12) under the structural elements (14,18) and optionally secondary shaping elements (16,20) is partly enlarged in the axial direction by material flow compared with the wall thickness of the starting pipe.

REFERENCES:
patent: 4660269 (1987-04-01), Suzuki
patent: 4783898 (1988-11-01), Kanamaru et al.

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