Gear measuring machine for inspecting helical gears

Details Gear measuring machine for inspecting helical gears Gear measuring machine for inspecting helical gears

1981-12-08

1983-02-15

Little, Willis

Geometrical instruments

Area integrators

Electrical

331795D, G01B 520, G01B 728

Patent

active

043732682

ABSTRACT:
A gear measuring machine for inspecting helical gears contains a feeler for sensing the tooth flank of the gear being tested. Since the contact point between the feeler and the tooth flank is located by the amount of the helix angle below a horizontal line extending through the feeler tip it is necessary when recording a profile diagram of the gear tooth to take into account the distance r.multidot.cos .beta..sub.b to obtain an exact zero point for the start of the profile diagram. To determine such zero point the gear measuring machine uses a digital circuit arrangement containing a generating or roll path counter and a correction counter. The correction counter continues to count until its count has reached a value corresponding to the aforementioned distance. Then the generating or roll path counter is started.

REFERENCES:
patent: 3849892 (1974-11-01), Fabish et al.
patent: 3950858 (1976-04-01), Donner et al.
patent: 4285133 (1981-08-01), Sterki
patent: 4297788 (1981-11-01), Sterki et al.
patent: 4322889 (1982-04-01), Guenter

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