| 摘要 |
An eyeglass lens grinding apparatus for grinding a periphery of a lens. A processing device has abrasive wheels, and processes the lens while depressing the lens onto at least one of the abrasive wheels rotatingly driven by an abrasive wheel rotating motor. The lens is fixedly mounted to a first lens chuck shaft through a lens fixing cup. A second lens chuck shaft has a lens pressing holder, and is arranged coaxially with respect to the first lens chuck shaft. A rotating device has a motor and a transmission member that transmits rotational force of the motor to the first lens chuck shaft. A chucking device clamps the lens by relatively moving the second lens chuck shaft with respect to the first lens chuck shaft in a direction of an axis of rotation with a moving mechanism. A first detector detects an angle of rotation of the second lens chuck shaft when the second lens chuck shaft is rotatingly driven by the first lens chuck shaft rotated by the rotating device in a state where the lens is clamped by the first and second lens chuck shafts. A controller controls processing based on a result of detection by the first detector.
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