FANUC Series 16/18/160/180-Model C for Lathe Operator Manual

PROGRAMMING
B–62754EN/01
4. INTERPOLATION FUNCTIONS
65
Using the Q address to specify an angle between the one–spindle–rotation
signal and the start of threading shifts the threading start angle, making
it possible to produce multiple–thread screws with ease.
Multiple–thread screws.
_ : End point
F_ : Lead in longitudinal direction
Q_ : Threading start angle
(constant–lead threading)
G32 IP_ F_ Q_ ;
G32 IP_ Q_ ;
G32: Constant–lead thread cutting
G34: Variable–lead thread cutting
G76: Multiple–thread cutting cycle
G92: Thread cutting cycle
The start angle is not a continuous–state (modal) value. It must be
specified each time it is used. If a value is not specified, 0 is assumed.
The start angle (Q) increment is 0.001 degrees. Note that no decimal point
can be specified.
Example:
For a shift angle of 180 degrees, specify Q180000.
Q180.000 cannot be specified, because it contains a decimal point.
A start angle (Q) of between 0 and 360000 (in 0.001–degree units) can be
specified. If a value greater than 360000 (360 degrees) is specified, it is
rounded down to 360000 (360 degrees).
For the G76 multiple–thread cutting command, always use the FS15 tape
format.
4.11
MULTIPLE–THREAD
CUTTING
Format
Explanations
D Available thread cutting
commands
Limitations
D Start angle
D
Start angle increment
D Specifiable start angle
range
D Multiple–thread cutting
(G76)

Leave a Reply

Your email address will not be published. Required fields are marked *