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Cutting Data
WSP Spotting >> 145°+90° W Spotting
WSP spotting
Formula
P = distance of theoretical intersection point to tip of insert.
0.5 = ¿[HGIDFWRUIRUFDOFXODWLRQ
Lreq. = Dreq. x 0.5 - P
Lreq. = required drilling depth
Dreq. = required diameter
Dreq.
P =
M4 M5 M6 M8 M10 M12 M14 M16 1/4-20
UNC 5/16-18
UNC 3/8-16
UNC
1.17 1.48 1.76 2.39 2.97 3.59 4.19 4.88 1.80 2.30 2.78
WSP spotting
Work Material
Vc (m/min) f (mm/rev.)
Carbon Steel 150 ~ 300 0.05 ~ 0.15
Alloy Steel 120 ~ 250 0.05 ~ 0.10
Stainless Steel 80 ~ 150 0.04 ~ 0.08
Cast iron 100 ~ 200 0.05 ~ 0.10
N9MT-RC Insert >> Corner Rounding
Determine spindle speed and feed:
To decide running speed of the tools and feed rate, please calculate spindle speed and
feed rate according to the following formula and cutting data:
Corner Rounding
Calculate spindle speed
d = 2 x X
d = diameter of the tool for calculation purpose
mm
X = tool radius offset (ref. page 25~27 for RC inserts)
Center of insert
S =
Vc x 1000
r.p.m.
d x
Vc = Cutting Speed -m/min.
S = Spindle Speed -r.p.m.
F = mm/min.
F = S x f
mm/min.
f = mm/rev.
Calculate tool length offest on machining center
Y
Center of holder
X = tool radius offset (ref. page 25~27 for RC inserts)
distance to the center of radius.
Y =
(ref. page 25~27 for RC inserts)
TL’ = tool length
X
TL = TL’-Y,
H = X
TL = tool length offset.
H = tool radius offset
RC Insert
Work Material
Vc (m/min) f (mm/rev.) Grade of Insert
Carbon Steel 150~320 0.05~0.10 NC40, NC2071
Alloy steel 100~250 0.05~0.10 NC40, NC2071
High alloy steel 80~150 0.04~0.08 NC40, NC2071
Stainless Steel 65~125 0.05~0.10 NC9036
Cast iron 150~250 0.05~0.10 NC40, NC2071
Aluminum, AI-alloy Si < 12%
A 150~320 0.05~0.10 NC9036
Al-alloy Si >12%
A 100~300 0.05~0.10 NC9036
Cu 200~250 0.05~0.10 NC9036
Brass and Bronze 150~250 0.05~0.10 NC9036
34 Nine9 Cutting Tool & Tool Holders