A Study on real-time monitoring and diagnosis of tool-failure for automation of machining process

학위논문(박사)--서울대학교 대학원 :기계설계학과,1995.Docto

Measurement of the Dynamic Transmission Error of Helical Gears by the Accelerometers

The object of this work is to develop the measurement method of the transmission error of the helical gears. For this purpose, experimental set up is designed by 3D CAD software. It consists of the motor, inverter, powdered brake equipment, torque sensor and helical gearbox. In this study, tangential linear accelerometers were used as the methods for the transmission error measurement, the acceleration signals are transmitted to the signal conditioners through the slip rings and the transmission errors are obtained by a specially designed circuit board. The transmission errors are analyzed in the frequecncy and its harmonics. The magnitude of harmonic components is very dependent on the natural frequencies of the gear system. It usually increases with the rotational speed. However, it does not always increase with torque.과학재