Page 1021 - Tungaloy Catalog

Technical Reference
Turning Tools
Relations between cutting force and cutting conditions or cutting phenomena

Conditions Grey cast iron (HB130) Stainless steel (HB145) Carbon steel (HB230)

Cutting speed and Negative
cutting force Negative Negative
f = .008 ipr Cutting force (N) Positive Cutting force (N) Cutting force (N)

ap = .078 in Positive
Side cutting edge Positive
angle 0°
Corner radius r ε .016
Cutting speed: Vc (SFM) Cutting speed: Vc (SFM) Cutting speed: Vc (SFM)
Depth of cut and
cutting force Negative
Vc = 330 SFM Cutting force (N) Negative Cutting force (N) Negative Cutting force (N)
f = .008 ipr Positive Positive Positive
Side cutting edge
angle 0°
Corner radius r ε .016
Depth of cut: ap (in) Depth of cut: ap (in) Depth of cut: ap (in)

Feed and cutting force
Vc = 330 SFM Negative Negative
ap = .078 in Cutting force (N) Negative Cutting force (N) Cutting force (N)
Side cutting edge Positive Positive Positive
angle 0°
Corner radius r ε .016

Feed: f (ipr) Feed: f (ipr) Feed: f (ipr)
Corner radius and
cutting force Negative Negative Negative
Vc = 330 SFM Cutting force (N) Cutting force (N) Positive Cutting force (N) Positive
f = .008 ipr Positive
ap = .047 in
Side cutting edge
angle 0°
Corner radius: rε (in) Corner radius: rε (in) Corner radius: rε (in)
Side cutting edge angle Technical Reference
and cutting force Negative Negative Negative
Vc = 330 SFM Cutting force (N) Cutting force (N) Cutting force (N)
f = .008 ipr Positive Positive
ap = .078 in Positive
Corner radius r ε .016 14
‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡ ‡
Side cutting edge angle Side cutting edge angle Side cutting edge angle
Side rake angle and
cutting force
Vc = 330 SFM

f = .008 ipr Cutting force (N) Cutting force (N) Cutting force (N)
ap = .078 in
Side cutting edge
angle 0°
ò ‡ ‡ ‡ ò ‡ ‡ ‡ ò ‡ ‡ ‡
Corner radius r ε .008 Side rake angle Side rake angle Side rake angle
* 9.8N = 1kgf

14–3