Screw measuring method, screw measuring probe, and screw...

Details Screw measuring method, screw measuring probe, and screw... Screw measuring method, screw measuring probe, and screw...

2007-03-01

2009-02-17

Smith, Richard A. (Department: 2841)

Geometrical instruments

Gauge

Screw thread

C033S504000

Reexamination Certificate

active

07490411

ABSTRACT:
A screw measuring apparatus comprising: an internal-dimension measuring unit for obtaining internal-dimension information Dwof a female screw placed on a coordinate measuring machine when the stylus-tip sphere having the diameter selected according to the pitch of the female screw is butted against the screw groove of the female screw; and an effective-diameter calculating unit for obtaining effective-diameter information Deof the female screw from the internal-dimension information Dwobtained by the internal-dimension measuring unit, diameter information 2r of the stylus-tip sphere, and thread angle information α and pitch information P of the female screw, by using an effective-diameter calculation expression De=Dw+2r×cosec(α/2)−(P/2)×cot(α/2).

REFERENCES:
patent: 4947555 (1990-08-01), Allen, III
patent: 5251154 (1993-10-01), Matsumoto et al.
patent: 5571222 (1996-11-01), Ludwig
patent: 6145207 (2000-11-01), Brunson
patent: 6285965 (2001-09-01), Taenzer
patent: 6460261 (2002-10-01), Noda et al.
patent: 2001/0034948 (2001-11-01), Matsumiya et al.
patent: 932017 (1999-07-01), None
patent: A 55-113907 (1980-09-01), None
patent: 02242101 (1990-09-01), None
patent: A 7-294244 (1995-11-01), None
patent: A 2001-082952 (2001-03-01), None
patent: 2004020342 (2004-01-01), None
patent: 2004198238 (2004-07-01), None
patent: 1516731 (1989-10-01), None

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