Compensations for CNMG/WNMG -SW / -FW

Compensations ④ Tool offsets (Compensations for X- and Z-axis)

Match the insert approach angle and the insert style to find the value and compensate the machining program for the insert radius. *This compensation procedure will not be necessary if the insert is compensated with the built-in tool presetter after insert replacement.

D N M G - S W / - F W ( Type J )

NoseX-axisZ-axis
Radiusdirectiondirection
R0.40.240.03
R0.80.230.04
R1.20.120.03

T N M G - S W / - F W ( Type J ) T N M G - S W / - F W ( Type G ) T N M G - S W / - F W ( Type F )

Nose RadiusX-axis directionZ-axis directionNose RadiusX-axis directionZ-axis directionNose RadiusX-axis directionZ-axis direction
R0.40.240.04R0.40.240.02R0.40.020.24
R0.80.210.05R0.80.210.02R0.80.020.21
R1.20.160.04R1.20.150.02R1.20.020.15

Compensations ⑤ Program compensations for tapered surface

(proceed after ④ )

To machine tapered surfaces with DNMG or TNMG-SW/-FW insert, compensate both the x-axis and z-axis positions. Since

these inserts are commonly used for profiling, to machine a tapered surface with a gradual reduction in diameter, the z-axis position has to be compensated in the negative direction.

Z-axis to be Z-axis to be

compensated compensated

(reduction in (increase in

X axis (+) diameter) diameter)

Taper angle α

Z axis (+) ( - ) ( + )

Compensations for x- and z-axes when using DNMG or TNMG-SW/-FW

Match the insert nose radius and the angle of the surface taper to find the value in below to compensate the

x-axis and/or z-axis positions.

For DNMG-SW/-FW (Type J)

X-axis compensation values for plus-tapered surface (increase in diameter)

Nose radius (mm)0510152025303540 Taper45 angleα50 (θ)5560657075808590
R0.40-0.01-0.01-0.01-0.01-0.02-0.03-0.04-0.06-0.08-0.10-0.14-0.19-0.20-0.20-0.19-0.19-0.190
R0.800.010.020.020.030.030.020.01-0.00-0.02-0.05-0.09-0.15-0.17-0.15-0.13-0.12-0.110
R1.200.020.040.050.060.070.070.060.040.02-0.02-0.09-0.17-0.19-0.16-0.14-0.13-0.150
-axis educcomp tion inensation values for minus-tapered surface diameter)Match the taper angle and insert nose radius to find the value in Table 2 and compensate the NC program by either adding or deducting the value.
Nose radiusTaper angleα(θ)Example:
(mm)-25-20 -15 -10 -5Tapering a surface of +45° (increase in diameter)
R0.40.330.34 0.34 0.34 0.34with a R0.8 mm insert.
R0.80.300.32 0.33 0.34 0.34Current NC program: X100 Cti l 002
R1.20.330.35 0.38 0.40 0.40ompensaon vaue: -. Parameter after compensation: X99.98