齿轮重合度优化提升传动效率，降低噪音

The optimization has resulted in a 15% improvement in the meshing accuracy of the first gear, an 11% improvement in the meshing accuracy of the second gear, and an 18% improvement in the meshing accuracy of the main reducer gear. These improvements are quite significant, and the optimized gear axials are all around 1.8, with end face overlap greater than 1 and very close to 1. This has reduced the variation in tooth surface load and made the transmission more stable and less noisy.