Spiral Bevel Gear Steady And Test System Design And Research

The smoothness of gear transmission is one of the important aspects that affect the noise of the gear. To improve the transmission smoothness can reduced the noise level efficiently. The traditionnal methods on the measurement of transmission smoothness are mainly the eyeballing of the tooth contact and the measurement of transmission noise. So the precision is very low and the root of the noise cann't be detected. The single flank test and structure borne noise analysis can measure the transmission smoothness precisely. And the frequency spectrum of results can reveal the root of the noise. We can realize the closed loop in gear manufacture by adjusting corresponding parameter. So the research on gear transmission smoothness measurement system has much usefulness.The research of this thesis is mainly concentrate on the problems in the building of the measurement system. First we determined that the system was constructured based on virtual instrument, so the system is common using with low maintenance fee. Secondly, the measurement arithmetic of single flank test has been researched, and the pulses subdivision and counter method was used to realize high precision measurement of rotation angle error. The angle encoder is used to measure and control the backlash. Development process of the software of the system using LabWindows/CVI has been researched on. Deduced the formula to calculate sample points in different sample way. The arithmetic was given to separate the error of gear pair from transmission error, 11 analyses were carried out on the single flank test results and analysis method was given in detail. The correlation between single flank test results and structure borne noise analysis results can be revealed through the excitation of the gear, and can be validated through experiment. The judge method of experiment and the search method of the best mesh point were researched in the end.