Page 1909 - Master Catalog 2017, Inch
P. 1909
High-Performance Thread Mills
CNC Programming Instructions
Thread Milling Methods
Climb Milling Conventional Milling
Properties: Properties:
Tool rotation direction clockwise Tool rotation direction clockwise
Tool moves counterclockwise Tool moves clockwise
Pitch upwards Pitch downwards
Right-hand thread Right-hand thread
Climb milling is always when the cutting Conventional milling is always when the
edge goes out of the material with a chip cutting edge goes out of the material with
thickness h = 0 a chip thickness h = max
A B
h = max
B
Counter Feed F k Center Point Feed F m
F • (D-Dw)
F = n • f • Z [mm/min] F m = k [mm/min]
k
z
D
High-Performance Thread Mills
Center Point Feed (F m )
Counter Feed (F k )
D = Tool diameter [mm]
w
1
n = RPM [min- ]
f = Feed per tooth [mm]
z
Z = Number of teeth on tool (radial)
D = Nominal diameter of thread = Diameter of external contour [mm]
D = Diameter of the center point (D-D ) [mm]
m
w
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