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我厂生产的QY型12吨液压起重机的回转机构,采用了蜗轮减速机构,其中的关键另件蜗杆如图1所示。因其转速高,负荷量大,除机械加工的精度要求高外,对其齿面的硬度和强度均有较高的要求:
The slewing mechanism of the QY type 12-ton hydraulic crane produced by our factory adopts a worm gear deceleration mechanism. The key worm is shown in Figure 1. Due to its high rotation speed and large load, in addition to the high precision requirements of machining, its tooth surface hardness and strength have higher requirements: