Dynamic Modelling and Analysis of the Microsegment Gear

الملخص EN

The development of technology requires higher load capacity, rotating speed, power-weight ratio, lower vibration, and noise with respect to the gear transmission.

The new type microsegment gear’s tooth profile curve is composed of many microsegments.

Previous researches indicate that the microsegment gear has a good static performance, while the dynamic behavior of the microsegment gear has never been investigated.

This paper will focus on the dynamic performance of the gear.

The profile deviation between microsegment gear and involute gear is regarded as a displacement excitation in the proposed dynamic model.

The numerical analysis for three cases is conducted and the results shows that, in low-speed and heavy-load, medium-speed and medium-load conditions, microsegment gear and involute gear both exhibit a good performance, while, in high-speed and heavy-load condition, microsegment gear has a better performance than that of involute gear.

The influence of backlash on the dynamic performance is also studied.

It is found that the variation of backlash does not change the type of motion, but the vibration amplitude and the stability of the motion are much affected.

The main idea in this paper is supposed to provide a novel method for the precision grinding of the microsegment gear.