| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of measuring a gear, reducing the size of a machine by reducing the amount of movement of a measuring element to reduce a movement range of the measuring element during the measurement. Ž<P>SOLUTION: In the method of measuring a gear for measuring a gear shape by synchronizing and controlling the movement of the measuring element 16a and the rotation of a workpiece W and rectilinearly moving the measuring element 16a in a contact state with a right gear surface WR or a left gear surface WL of the workpiece W in response to the rotation of the work W, a tangential line L in contact with a contact point A with rotational arrangement at a prescribed rotational angle α from a contact point Ao on a base circle Wb of the workpiece W to one direction and a tangential line L' in contact with a contact point A' with rotational arrangement at the prescribed rotational angle α from the contact point Ao on the base circle Wb of the workpiece W to the other direction are set. The measuring element 16a is moved along the tangential line L upon the measurement of the right gear surface WR, and the measuring element 16a is moved along the tangential line L' upon the measurement of the left gear surface WL. The intersection of the tangential lines L, L' is made the middle point between measurement start positions B, B' and measurement end positions C, C'. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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