圆弧齿轮制造工艺探讨

Technological Exploration about the Manufacture of Arc Gear

圆弧齿轮较渐开线齿轮有较多的优越性 ,现在已经被很多行业广泛应用。我公司在过去制造“67”型圆弧齿轮过程中 ,已经形成了自己的工艺方法和特点 ,不论是凸齿还是凹齿 ,我们的制造要点是 :(1)严格控制齿坯外径尺寸精度和位置精度 ;(2 )模数m≤12的齿轮用同模数圆弧滚刀加工 ;模数m >2的齿轮 ,粗切齿时选择渐开线齿轮滚刀可以提高加工效率 ;(3)控制好粗切深度 ,要留有充分的精切余量 ,然后再使用圆弧滚刀精切 ,可以提高刀具使用寿命。

The arc gear is more superior to the involute gear.Now it has widely been applied in many fields.The unique technological process and peculiarity of'67'type arc gear manufactured in the past by our corporation have formed.The key points of manufacture for either convex teeth or concave teeth are as fellows:(1)Strict control of the precisiom of the outside diameter and the position of gear blank.(2)For the gear with the module m≤12,the arc gear cutter hob of same module is used for machining;For the gear with the module m>12,the involute gear cutter hob is selected to improve working efficiency during rough tooth cutting (3)Proper control of the depth for rough cutting.The sufficient precise cutting allowance should be given.Finally,the arc cutter hob is used for precise cutting to increase the service life of the cutter.The technological measurement of arc gear is relatively accurate and reliable,comparing normal line method.