WIDIA - Полный каталог инструмента - 2017
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Copy Mills • M170™ Series
Additional Application Advice • RD07..
Selecting the Correct Cutting Values
1. fz depends on the Ap1 and ae values
With round inserts, two factors can affect the hm: Ap1 and ae.
fz has to be adjusted accordingly.
Recommended Starting Feed Rate Values (fz) Related to the Ap1 and ae Values:
ae engagement
Ap1 = 0,5mm
Ap1 = 0,75mm
Ap1 = 1mm
Ap1 = 1,5mm
Ap1 = 3,5mm
10%
0,59mm
0,50mm
0,42mm
0,34mm
0,22mm
20%
0,42mm
0,36mm
0,30mm
0,24mm
0,16mm
30%
0,34mm
0,29mm
0,24mm
0,20mm
0,13mm
40%
0,30mm
0,25mm
0,21mm
0,17mm
0,11mm
50%
0,26mm
0,22mm
0,19mm
0,15mm
0,10mm
100%
0,19mm
0,16mm
0,13mm
0,11mm
0,08mm
Example application
highlighted.
Example Cutting Conditions for RD..07... Insert in Pocketing, L/D ratio = 2 x D:
insert = RDPX0702M0SNMH
TN2505
TN6525
TN6540
feed per tooth fz (mm)/ae>50%
min med max min med max min med max
ae>50%
Recommended starting Ap1 = 0,5mm
0,19mm 0,22mm 0,30mm 0,19mm 0,30mm 0,35mm 0,19mm 0,30mm 0,40mm
2. Ap1 and vc corrections depend on L/D ratio
With increasing L/D ratios, or overhang, vibrations can occur due to reduced
rigidity. To ensure successful application, it is recommended to adjust Ap1
and vc values according to the following table:
L/D ratio
<2
2<L/D<4
>4
% of Ap1 max
to reduce
0%
65–75%
80–95%
% of vc
to reduce
0%
10–15%
20–40%
L
L
D
L
D
Recommended Cutting Conditions • Helical Interpolation from Solid
cutter diameter
12
15
16
20
25
30
min hole
diameter
17mm
18mm
20mm
28mm
36,5mm
46,4mm
max hole diameter
(at bottom)
17mm
23mm
25mm
33mm
43mm
53mm
Ap1 max
per revolution
3,5mm
2,8mm
1,9mm
3,5mm
3,5mm
3,5mm
max
ramp angle
22°
18°
9°
12°
8.5°
6.5°
Ap1 max
when plunging
1mm
2,2mm
1,4mm
1,5mm
2,5mm
2,5mm
D
Cutter
Diameter
Hole
Diameter
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M51