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滚齿机最重要的部分是工作台面的分度蜗轮副,它直接影响机床的精度。随着对加工齿轮精度要求的提高,对滚齿机分度蜗轮副的要求也就提高。目前有些厂已采用自由珩磨蜗轮的方法来修复提高分度蜗轮副的制造精度。生产实践缸明,这是一种较简单而有效的方法,它不仅不需要特殊精密设备,且修理周期短,修复效果好。我厂曾采用调换分度蜗杆,珩磨分度蜗轮的修理方案,检修ZWF10滚齿机(加工齿轮最大模数10,最大直径1000毫米)及5330滚齿机(加工齿轮最大模数15～20,最大直径1500～2000毫米),分度蜗轮副基本达到或超过原有精度要求。蜗轮珩磨加工的啮合原理与蝸轮剃削加工相同,切削运动也基本一致,它是将珩磨蜗杆与蜗轮视为一对二轴相交成90°的螺旋齿轮,依靠二者之间的相对滑动,进行磨削加工。珩磨蜗杆与蜗轮之间没有一定的传动键联系,它呈自由传动状态。
The most important part of the hobbing machine is the indexing worm gear on the worktable, which directly affects the precision of the machine tool. With the improvement of the machining gear accuracy requirements, the requirements of the hobbing machine indexing worm gear will also be improved. At present, some factories have adopted the method of free honing worm to repair and improve the manufacturing precision of indexing worm gear pair. Production practice cylinder Ming, this is a relatively simple and effective method, which not only does not require special precision equipment, and repair cycle is short, good repair. Our factory has used the exchange indexing worm, honing indexing worm repair program, overhaul ZWF10 hobbing machine (gear maximum modulus 10, the maximum diameter of 1000 mm) and 5330 hobbing machine (processing gear maximum modulus of 15 to 20, the maximum diameter of 1500 ~ 2000 mm), indexing worm gear basically meet or exceed the original accuracy requirements. Worm wheel honing meshing process and worm gear cutting the same cutting movement is basically the same, it is the honing worm and worm gear as a pair of two-axis intersect 90 ° helical gear, relying on the relative sliding between the two, Grinding. There is no certain transmission key between honing worm and worm gear, it is in free transmission state.