TG_SFC_US-EN
ALLIED MACHINE & ENGINEERING | RECOMMENDED CUTTING DATA
5895
M03
S
Turn on spindle in the clockwise direcƟon.
N10
1
Lower tool the depth required plus an addiƟonal 1/8 pitch for the arc on. Tool remains in the center of the hole.
2
N20
G91
G01
Z -10.250
F 1136.25
PosiƟon the tool for the arc on moƟon and turn on the cuƩer compensaƟon.
N30
G41
X 1.015
Y 1.015
D1
F 681.75
Arc on to engage the tool to the major thread diameter while moving the tool up in the Z-axis 1/8 pitch. NOTE : X and Y is the end point. I and J is the center point of the arc.
3
N40
G03
X -1.015
Y 1.015
Z 0.250
I -1.015
J0.000
F 227.37
Full pass. Interpolate the thread mill inside the major thread diameter while moving the tool up 1 pitch in the Z axis.
4
N50
G03
X 0.000
Y 0.000
Z 2.000
I 0.000
J -2.030
Arc off to disengage the tool from the major thread diameter while moving the tool up in the Z-axis 1/8 pitch.
N60
G03
X -1.015
Y -1.015
Z 0.250
I 0.000
J -1.015
F 909.00
5
Return to center. Turn off cuƩer compensaƟon and move the tool back to center.
N70
G40
G01
X 1.015
Y -1.015
F 1136.25
Return to top. Rapid the tool back to the top of the threaded hole.
N80
G00
Z 7.750
Switch back to absolute posiƟoning and rapid to a safe point in Z above part level (assumed to be 1 pitch above part level for demonstraƟon purposes below).
6
N90
G90
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
N10
N20
N30 - N40
N50
N60 - N70
N80 - N90
• Preparatory commands • PosiƟoning above hole center and at hole level in Z • In absolute posiƟon mode
• Change to
• AcƟvate leŌ cuƩer comp • Feed to arc on posiƟon • Arc to full rotaƟon value while moving Z up 1/8 pitch • Z axis move for arc on
• One complete CCW rotaƟon at full arc rotaƟon value while moving Z up 1 pitch value
• CCW arc from full
• Rapid up in Z
incremental • Feed to boƩom of hole • Z axis depth for full thread
rotaƟon value to the arc on/off value while moving Z up 1/8 pitch (Z axis move for arc off)
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