楔键是机械设备中的一种重要键联接形式。键的上表面和轮毂上的键槽底面制成1:100的斜度,装配后可防止单方向轴向移动。长期以来,一般都用插床加工。当轮毂孔较小、长度较长时,由于刀杆刚性差,让刀影响斜度的精度,振动影响粗糙度,被迫改用平键加紧定螺钉或用端盖的办法进行轴向定位,楔键的使用受到限制。本文介绍在有增大螺距的车床上用单刀头拉削轮毂楔键槽的方法。拉削精度比插床加工高,粗糙度比插床加工好,加工方便,可不用昂贵的拉刀和专用机床解决加工问题。一、结构 Wedge key mechanical equipment is an important form of key connection. The top surface of the key and the underside of the keyway on the hub feature a 1: 100 pitch that prevents unidirectional axial movement when assembled. For a long time, the general use of slot machine processing. When the hub hole is small and the length is longer, due to the poor rigidity of the arbor, the accuracy of the knife affects the slope and the influence of the vibration on the roughness is forced to use the flat key to tighten the set screw or the axial cover with the end cap. Wedge key use is limited. This article describes the use of a pitch-increasing lathe with a single-head chipping hub spline key way. Broaching precision than the slot machine processing, the roughness than the slotting processing, processing convenience, without expensive broaches and special machine tools to solve processing problems. First, the structure