183
96-8000 Rev AC
May 2010
G
&
M
Codes
Settings
F
Feed rate in G93 or G94 (modal in G94)
This feature performs three-dimensional cutter compensation.
The form is:
G141 Xnnn Ynnn Znnn Innn Jnnn Knnn Fnnn Dnnn
Subsequent lines can be:
G01 Xnnn Ynnn Znnn Innn Jnnn Knnn Fnnn
Or
G00 Xnnn Ynnn Znnn Innn Jnnn Knnn
Some CAM systems are able to output the X, Y, and Z with values for I, J, K.
The I, J, and K values tell the control the direction in which to apply the com
-
pensation at the machine.
The I, J, and K specify the normal direction relative to the center of the tool
to the contact point of the tool in the CAM system. The I, J, and K vectors are
required by the control to be able to shift the tool path in the correct direction.
The value of the compensation can be in a positive or negative direction.
The offset amount entered in radius or diameter (Setting 40) for the tool will
compensate the path by this amount even if the tool motions are 2 or 3 axes.
Only G00 and G01 can use G141. A Dnn will have to be programmed, the D-
code selects which offset to use. G93 feed command is required on each block.
With a unit vector, I2 + J2 + K2 must equal 1.
Only the end-point of the commanded block is compensated in the direction of
I, J, and K. For this reason this compensation is recommended only for surface
tool paths having a tight tolerance (small motion between blocks of code).
For best results program from the tool center using a ball nose end mill.
G141 Example:
T1 M06
G00 G90 G54 X0 Y0 Z0 A0 B0
G141 D01 X0.Y0. Z0. (RAPID POSIT WITH 3 AX C COMP)
G01 G93 X.01 Y.01 Z.01 I.1 J.2 K.9747 F300. (FEED INV TIME)
X.02 Y.03 Z.04 I.15 J.25 K.9566 F300.
X.02 Y.055 Z.064 I.2 J.3 K.9327 F300.
.
.
X2.345 Y.1234 Z-1.234 I.25 J.35 K.9028 F200. (LAST MOTION)
G94 F50. (CANCEL G93)
G0 G90 G40 Z0 (Rapid to Zero, Cancel Cutter Comp)
X0 Y0
M30
Summary of Contents for 96-8000
Page 15: ...6 96 8000 Rev AC May 2010 Mill Warning Decals ...
Page 16: ...7 96 8000 Rev AC May 2010 Safety Lathe Warning Decals ...
Page 41: ...32 96 8000 Rev AC May 2010 ...
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