A new generation of standards for evolvent tooth gear geometry

An analysis is presented of measurements involved in producing evolvent spur gears (ESG). An appropriate organizational, technical, and standardization basis exists for setting up a new generation of standards for measuring the geometrical parameters of ESG, which can provide for reproducing and transmitting a unit of length in the area of evolvent surfaces for use with means of measuring various parameters characterizing the kinematic accuracy, smoothness of operation, surface contacts, and lateral clearance.