齒輪是機械構造中最重要的零件,齒輪是否精確會直接影響機械的精度。製造齒輪的機械很多,普通工廠中常見的有三種:第一種是利用普通平銑床,分度器和圓片形齒輪銑刀銑製;另外兩種是齒輪滾床和齒輪刨床。第一種機械雖然是工埸中最普通的設備,但是因为它銑齒的效率很低,不適合大 Gear is the most important part of the mechanical structure, the accuracy of the gear will directly affect the accuracy of the machine. There are a lot of machines for making gears. There are three common types in ordinary factories: the first one is milling with normal milling machines, protractors and disc-shaped gear milling cutters; the other two are gear turning machines and gear planing machines. Although the first machine is the most common machine tool, but because of its inefficient milling, not suitable for large