GEAR TEETH PHASE CALCULATION DEVICE, GEAR TEETH PHASE CALCULATION METHOD, AND GEAR MACHINING APPARATUS
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United States of America Patent
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Mar 16, 2015
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Mar 20, 2014
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The present invention improves the calculation accuracy of the phase of gear teeth. This method for calculating a phase of teeth of a gear, the gear having Z number of teeth, includes: a gear teeth amplitude signal acquiring step of acquiring a gear teeth amplitude signal (S(c)) corresponding to at least one revolution of the gear, the gear teeth amplitude signal (S(c)) being formed by an association of an angle (c) of the gear and a value corresponding to irregularities on an outer circumference of the gear within the angle (c); a phase calculating step of calculating a phase (B) of an angular pitch (P) of the gear in accordance with the number (Z) of teeth when the gear teeth amplitude signal (S(c)) is subjected to frequency decomposition; and a gear meshing angle calculating step of calculating a gear meshing angle on the basis of the phase (B) detected by the phase calculating unit.
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