盲孔花键采用插床的单刀插削加工,精度差、效率低。我们采用多刀刃盲孔花键插刀,在B502D型插床上加工效果较好。其加工精度为二级、光洁度可达▽6、累积误差0.015毫米,加工效率较高。如加工28×62.4×56.2×10、长80毫米的盲孔花键,只需机动时间7.5～10分钟,而且质量好。刀具结构如图1～4所示。由进刀机构、可调刀刃机构两部分组成。盲 Blind hole spline slotted single-pole insertion machining, poor precision, low efficiency. We use multi-edge blind-hole spline knife, B502D-type slot on the processing effect is better. The processing accuracy of two, smooth up to ▽ 6, the cumulative error of 0.015 mm, higher processing efficiency. Such as processing 28 × 62.4 × 56.2 × 10, 80 mm long hole spline, only maneuver time 7.5 to 10 minutes, and good quality. Cutter structure shown in Figure 1 ~ 4. By the feed mechanism, adjustable blade body composed of two parts. blind