Abstract
The high precision gear is strongly required for advanced quality on Motion and Power Transmissions which is the fundamental technology of many fields, such as automobiles, construction machines and robots. And the improved evaluation technology (accuracy measurement etc.) of the gear is becoming indispensable. Then the high precision gear measuring machine, that have new system which reduces the error factors of the conventional machine, is being developed. It will improve the gear measuring technology spectacularly and the measurement uncertainty of the tooth profile, which is most important for the accuracy of the gear, will be reduced by one digit. And Osaka Seimitsu Kikai Gear Measuring Center (GMC) recently was accredited as JCSS (International MRA) gear calibration laboratory, which satisfies the requirements of ISO/IEC17025 concerning the competence of the calibration laboratory. And this high precision gear measuring machine is expected to contribute to improve gear calibration uncertainty.
