|
60°、90°、120°直柄锥面锪钻 (摘自GB/T 4258—1984) (mm) |
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|
|
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|
d |
8 |
10 |
12.5 |
16 |
20 |
25 |
|
|
L |
φ＝60° |
48 |
50 |
52 |
60 |
64 |
69 |
|
φ＝90°和120° |
44 |
46 |
48 |
56 |
60 |
65 |
|
|
l |
φ＝60° |
16 |
18 |
20 |
24 |
28 |
33 |
|
φ＝90°和120° |
12 |
14 |
16 |
20 |
24 |
29 |
|
|
d1 |
8 |
10 |
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