Method and tool or tool set for producing a thread in at...

Details Method and tool or tool set for producing a thread in at... Method and tool or tool set for producing a thread in at...

2007-06-12

2008-12-23

Fridie, Willmon (Department: 3724)

Turning

Process of turning

C082S110000

Reexamination Certificate

active

07467577

ABSTRACT:
A method for producing a thread in a workpiece can include producing a preliminary thread by removing material from the workpiece (e.g., with a cutting action), which produces a preliminary thread profile having two preliminary thread flanks and a preliminary thread root connecting the two preliminary thread flanks. The method can also include producing, in at least one second working step, a final thread having a final thread profile, which has two final thread flanks and a final thread root connecting the two final thread flanks. The final thread can be produced by plastic pressing-in of the material of the workpiece at least in a section of the preliminary thread profile by a predetermined volume. In one implementation, at least one of the preliminary thread flanks and at least one of the of the thread-forming profile are include at different inclination angles from each other.

REFERENCES:
patent: 2668401 (1954-02-01), Reimschissel
patent: 3496582 (1970-02-01), Johnson
patent: 4761891 (1988-08-01), Sugimura
patent: 5112169 (1992-05-01), Ryoki et al.
patent: 5144871 (1992-09-01), Niwa
patent: 5221234 (1993-06-01), Pakos
patent: 5285706 (1994-02-01), Robinson
patent: 5626064 (1997-05-01), Gradel et al.
patent: 6155148 (2000-12-01), Shinozaki et al.
patent: 6460435 (2002-10-01), Meyer et al.
patent: 6487946 (2002-12-01), Schroder

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