Mitsubishi Heavy Industries Technical Review
    Vol. 57 No. 3 (2020)   Machine Tools
    Technical Papers

    Visualization of Resistive Torque Distribution and Evaluation of Rotational Axis Characteristics for Improvement of Machining Accuracy

    Kyota Tokuyama,
    Tomohiro Ikawa,
    Ichiro Awaya,
    Toshiyuki Shimowaki,
    Naoki Iiyama,

    Devices that require high assembly accuracy, such as machine tools, often require performance evaluation through actual machining after assembly is complete in order to evaluate the soundness of the rotational axis. By accurately estimating the resistive torque at the time when the built-in motor is rotated at a low speed, the magnitude of the rotational axis resistive torque, which depends on the angle and angular velocity, can be evaluated. Furthermore, by displaying the resistive torque distribution in three dimensions, the uniformity of the rotational axis resistive torque can be evaluated at a glance. This inspection test can be conducted immediately after mounting the motor without actual machining. This report presents a technology that makes it possible to evaluate the state of a rotational axis by visualizing the resistive torque distribution.