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鉸刀 規格表
Reamer KS Specifications — 11個尺寸
Reamer
11 sizes| Nominal | Pilot Drill | Reamer Dia | H7 Tolerance | Finish | Vcm/min |
|---|---|---|---|---|---|
| Ø3 H7 | Ø2.85 | Ø3.00 | +0.010/0 | Ra 0.8 | 8~12 |
| Ø4 H7 | Ø3.85 | Ø4.00 | +0.012/0 | Ra 0.8 | 8~12 |
| Ø5 H7 | Ø4.85 | Ø5.00 | +0.012/0 | Ra 0.8 | 8~12 |
| Ø6 H7 | Ø5.85 | Ø6.00 | +0.012/0 | Ra 0.8 | 8~12 |
| Ø8 H7 | Ø7.85 | Ø8.00 | +0.015/0 | Ra 0.8 | 6~10 |
| Ø10 H7 | Ø9.80 | Ø10.00 | +0.015/0 | Ra 0.8 | 6~10 |
| Ø12 H7 | Ø11.80 | Ø12.00 | +0.018/0 | Ra 0.8 | 5~8 |
| Ø16 H7 | Ø15.75 | Ø16.00 | +0.018/0 | Ra 0.8 | 4~7 |
| Ø20 H7 | Ø19.75 | Ø20.00 | +0.021/0 | Ra 0.8 | 4~7 |
| Ø25 H7 | Ø24.70 | Ø25.00 | +0.021/0 | Ra 0.8 | 3~6 |
| Ø30 H7 | Ø29.70 | Ø30.00 | +0.021/0 | Ra 0.8 | 3~6 |
H7孔加工的鉸刀尺寸表。各鉸刀標稱尺寸包含底孔鑽直徑(鉸前鑽)·鉸刀精加工尺寸·H7公差範圍·預期表面粗糙度·推薦切削速度(Vc)。一般底孔鑽比鉸刀小0.1~0.3mm選擇(Ø10 H7時Ø9.8鑽 → Ø10.00鉸刀), 鉸孔後保證Ra 0.8以下表面粗糙度和±0.015mm以內公差。通孔·盲孔·材質別調整切削速度。