OPTIMUM
M A S C H I N E N - G E R M A N Y
Operation
Version 1.0.1 dated 2015-05-27
Page 50
Original operating instructions
TU3008 | TU3008V
GB
4.16.1 Cutting edge geometry for turning tools
4.16.2 Types of cutting form levels
They are needed to influence the chip drain and the chip shape in order to achieve optimum
chipping conditions.
Examples of types of cutting form levels
High-speed steel
Hard metal
Clearance
angle
Chip angle
Clearance
angle
Chip angle
Steel
+5° to +7°
+5° to +6°
+5° to +11°
+5° to +7°
Cast iron
+5° to +7°
+5° to +6°
+5° to +11°
+5° to +7°
non-ferrous metal
+5° to +7°
+6° to +12°
+5° to +11°
+5° to +12°
aluminium alloys
+5° to +7°
+6° to +24°
+5° to +11°
+5° to +24°
Img.4-24:
Cutting form level
Img.4-25:
Cutting form level
with fillet
b = 1.0 mm to 2.2 mm
t = 0.4 mm to 0.5 mm
b = 2.2 mm with fillet
For infeeds of 0.05 to 0.5 mm/U and depths of cut of 0.2 mm to 3.0 mm.
The different apex angles (
of the cutting form level need to conduct the chip.
Img.4-26:
Positive apex
angle for planing
Img.4-27:
Neutral apex
angle for planing
and roughing
b
t
b
