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图1所示的麻花钻用于在鋁合金的壳体零件上,钻削直徑4～8毫米的深孔。这种麻花钻有較大的螺旋槽斜角(ω=42°),以保证切屑順利排出且使冷却液容易注入。从而防止
The twist drill shown in Figure 1 is used to drill deep holes 4 to 8 mm in diameter on aluminum alloy housing parts. This twist drill has a larger helical groove angle (ω = 42 °) to ensure that the chips are smoothly discharged and the coolant is easily injected. Thus preventing