螺旋花键和直槽花键的区别在于花键齿沿轴向的分布不是直线而是螺旋线,它具有一定的导程,所以滚切螺旋花键时,除了滚切直花键的切削运动,分齿运动,轴向进给运动这三个基本运动以外,当滚刀轴向进给(或工件轴向进给)时,工件还要有相应的附加转动。也就是说,根据螺旋花键的导程,必须保证滚刀(或者工件)沿轴向进给一个导程 H 时,工件应正好附加转动一圈。在带有差动机构的花键铣床或滚齿机上,这个 The difference between helical splines and straight slot splines is that the axial distribution of the spline teeth is not a straight line but a helix, which has a certain lead. Therefore, when cutting the helical spline, except the cutting movement of the straight spline , Sub-tooth movement, axial feed movement of these three basic movements, when the hob axial feed (or workpiece axial feed), the workpiece also have a corresponding additional rotation. That is, depending on the lead of the helical spline, it must be ensured that when the hob (or workpiece) is fed with a lead H in the axial direction, the workpiece should be exactly one additional rotation. On spline milling machines or hobbing machines with differential gear, this