Каталог TooTool техническая информация 2 - страница 149

Technical Information for High Speed Drill A\
0


Hole Tolerance and Maximum Hole Size with Radial Adjustment Hole tolerance

Depth of drilling Tolerance (mm) Test Cutting Consdition
3XD 4XD
Drill Dia
Normal Radial shift Max 'hole (9) Normal Radia shift Max 'hole (9)
2 XD + 0.20/ -0.1
• vc = 130 - 200 m/min
13 13.16 + 0.5
•
-14.0 13.22 + 0.5 -14.0
3 XD + 0.25 /-0.1 fn = 0.04 - 0.15 mm/rev
14
15
14.10
15.10
+ 0.5
+ 0.5
-15.0
-16.0
14.15
15.17
+ 0.5
+ 0.5
-15.0
-16.0
4XD + 0.30/ -0.1 •
•
Workpiece = SCM 440
Coolant : Over 5kg/cm2
5 XD + 0.40/-0.1
16 16.07 + 0.5 -17.0 16.09 + 0.5 -17.0
17 17.08 + 0.5 -18.0 17.13 + 0.5 -18.0
18 18.05 + 0.5 -19.0 18.20 + 0.5 -19.0
19 19.08 + 0.5 -20.0 19.18 + 0.5 - 20.0
- 21.0
How to calculate machining power of drill: P (kw)
20 20.06 + 0.5 -21.0 20.05 + 0.5
21 20.97 + 0.25 - 21.5 21.00 + 0.25 -21.5
PC(kw) = 425 xkcxvcxfnxD/107
22 21.94 + 0.5 - 23.0 22.01 + 0.5 -23.0
23 23.10 + 0.5 - 24.0 23.10 + 0.5 - 24.0 Example
24
25
24.10
25.06
+ 0.5
+ 0.5
- 25.0
- 26.0
24.15
25.13
+ 0.5
+ 0.5
- 25.0
- 26.0
• Specific cutting force, kc (Mpa)
• Workpiece = 4140
• Fn = O.lmm/rev

26 26.03 + 0.25 - 26.5 26.09 + 0.25 - 26.5 • Cutting speed: vc(m/min)
• kc = 254Mpa
• D = 20mm
27 27.05 + 0.25 -27.5 26.96 + 0.25 - 27.5
• Feed rate: fn(mm /rev)
• vc = lOOm/min
28
29
28.11
28.54
+ 0.5
+ 0.5
-29.0
- 30.0
27.97
29.07
+ 0.5
+ 0.5
- 29.0
- 30.0
• Drill diameter: D(mm)
• PC(kw) = 425x254x100x0.1x 20/10000000 = 2.159 kw

30 30.23 + 0.5 - 31.0 30.13 + 0.5 - 31.0
31 31.07 + 0.25 - 31.5 31.12 + 0.25 - 31.5
32 32.06 + 0.25 - 32.5 32.11 + 0.25 - 32.5
33 33.12 + 0.25 - 33.5 33.17 + 0.25 - 33.5
34 34.10 + 0.5 - 35.0 34.15 + 0.5 -35.0
35 35.07 + 0.5 - 36.0 35.12 + 0.5 - 36.0
36 36.03 + 0.5 - 37.0 36.08 + 0.5 - 37.0
37 37.14 + 0.5 - 38.0 37.19 + 0.5 - 38.0
38 38.05 + 0.5 - 39.0 38.08 + 0.5 - 39.0
39 39.03 + 0.5 - 40.0 39.08 + 0.5 -40.0
40 40.00 + 0.25 - 40.5 40.05 + 0.25 -40.5
41 40.99 + 0.25 - 41.5 41.04 + 0.25 -41.5
42 42.03 + 0.5 - 43.0 42.08 + 0.5 -43.0
43 42.99 + 0.5 - 44.0 43.04 + 0.5 -44.0
44 44.17 + 0.5 - 45.0 44.22 + 0.5 -45.0
45 45.21 + 0.5 - 46.0 45.26 + 0.5 -46.0
46 46.17 + 0.5 - 47.0 46.23 + 0.5 -47.0
47 47.15 + 0.5 - 48.0 47.20 + 0.5 - 48.0
48 48.12 + 0.25 - 48.5 48.17 + 0.25 -48.5
49 49.00 + 0.25 - 49.5 49.05 + 0.25 -49.5
50 50.02 + 0.25 - 50.0 50.07 + 0.25 - 50.0

Choose the shortest possible drill for best performance and productivity results.

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