| 摘要 |
A machine for grinding the surfaces of helical teeth on a cutter, and having means for positioning a cutter alongside a grinding wheel and moving the cutter axially relative to the wheel while turning the cutter at a rate directly related to the spiral of the tooth about the cutter, thereby to present the full length of the tooth to the grinding wheel in a smooth, continuous motion. A movable tooth rest is pressed against one side of the tooth to be deflected laterally in response to the force developed between the tooth and the tooth rest, and deflection of the tooth rest operates a control valve for variably rotating the cutter. The motor is driven by a flow of fluid regulated by the control valve, and leakage that could create a pressure drop across the motor is made by an adjustable compensating valve. Fine adjustments are provided for correlating the deflection of the tooth rest with the resulting rates of cutter rotation.
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