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我厂在大修苏制5330滚齿机时,遇到一对五头10模数双螺距蜗轮副,它位于滚刀架传动末级,直接传动刀具主轴。通过长期使用,蜗轮蜗杆的齿面均已磨损。由于磨损量已超过调整范围,蜗轮副的工作侧隙过大。因此切削振动大,严重影响加工光洁度和精度,并大大降低了加工的效率。在大修时,新制了一件齿厚加大的蜗杆,增大了调整量,重新消除了蜗轮副的侧隙(这种具有渐增齿厚的蜗杆可作轴向调整,以适应齿厚的磨损)。近两年的实际使用,说明效果良好。图1为该蜗杆的示意图。下面简述其加工方法:一、蜗杆的铣削由于考虑到蜗杆头数多、模数大,螺距又是非标准,因此,蜗杆的粗加工不采用车削而采用铣削。选用20°角度的铣刀,外径为ф130。在一台捷制的
I plant overhaul the Soviet-made 5330 hobbing machine, met a pair of five 10 modulus double helical worm gear, it is located at the end of the hob transmission, direct drive tool spindle. Through long-term use, worm gear tooth surface has been worn. As the amount of wear has exceeded the adjustment range, the working side of the worm gear is too large. Therefore, cutting vibration, seriously affecting the processing finish and accuracy, and greatly reduce the processing efficiency. In the overhaul, the new system of a thickening of the worm gear, increased adjustment, re-eliminate the worm gear backlash (this with increasing tooth thickness of the worm can be adjusted axially to meet the tooth thickness Wear). The actual use of the past two years shows that the effect is good. Figure 1 is a schematic view of the worm. The following brief description of its processing methods: First, the milling of worms Considering the number of the worm head, the module is large, the pitch is non-standard, so the worm is not used for rough turning and milling. 20 ° angle milling cutter selection, diameter ф130. In a Czech system