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通常,直齿锥形齿轮在铣床上用仿形法铣削。铣削时,需将铣床工作台横向移动一定的距离,然后摇动分度头一个定值,即可铣削齿槽的一侧。所有这侧齿槽切削完毕,再将工作台和分度头反向加倍移动和摇动后切削齿槽的另一侧。因此,操作复杂,加工时间多,且所切的齿形精度低,仅适用于不重要的传动中。而直齿渐开线锥形齿轮可以在滚床上用展成法滚切,除了增加变换齿轮外,其滚削方法和直齿圆柱齿轮的滚削相同。所切制的齿轮齿形正确,啮合性能好,且生产力高。现以Y37滚床为例介绍。附图为Y37滚床工作台和刀架间的传动示意图。滚削直齿锥齿轮时,将传动工作台移动的两对蜗轮副拆除(图中细实线部分),在传动轴和工作台移动丝杠
Normally, straight bevel gears are milled on a milling machine with a profiling method. Milling, you need to move the horizontal milling table milling machine a certain distance, and then shake a sub-fixed value, you can mill one side of the cogging. All this side of the alveolar cutting is completed, and then the work table and indexing head reverse double move and shake the other side after cutting the alveolus. Therefore, the operation is complicated, the processing time is large, and the profile of the tooth profile is low, which is only suitable for the unimportant transmission. The involute involute gear can be used in the rolling bed roll roll cut method, in addition to increasing the transformation of gears, the hobbing method and straight spur gear hobbing the same. The cut toothed gear has the correct shape, good meshing performance and high productivity. Now Y37 rolling bed as an example. The picture shows Y37 rolling bed table and the tool rack between the transmission diagram. Rolling straight bevel gear, the transmission table to move the two pairs of worm gear removed (thin solid line part), the drive shaft and the table moving screw