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

6. SAFETY FUNCTIONS
B–62754EN/01
OPERATION
540
1 Return the tool to the reference position along the X– and Z–axes.
The chuck–tailstock barrier function becomes effective only once
reference position return has been completed after power on.
When an absolute position detector is provided, reference position
return need not always be performed. The positional relationship
between the machine and the absolute position detector, however,
must be determined.
1 After reference position return, specifying G22 (stored stroke limit
on) makes the entry–inhibition areas for the chuck and tailstock
effective. Specifying G23 (stored stroke limit off) disables the
function.
Even if G22 is specified, the entry–inhibition area for the tailstock can
be disabled by issuing a tailstock barrier signal.
When the tailstock is pushed up against a workpiece or separated from
the workpiece by using the miscellaneous functions, PMC signals are
used to enable or disable the tailstock setting area.
G code
Tailstock barrier
signal
Chuck barrier Tailstock barrier
G22
0 Effective Effective
G22
1 Effective Ineffective
G23 No relation Ineffective Ineffective
G22 is usually selected when the power is turned on. Using G23, bit 7
of parameter No. 3402, however, it can be changed to G23.
D Chuck holding the outer
face of a tool
D Chuck holding the
inner face of a tool
W
L1
L
W1
CZ
A
X
CX
Z
W
L1
L
W1
A
X
CX
Z
CZ
Origin of work-
piece coordi-
nate system
Note) The hatched areas indicate entry–inhibition areas.
Origin of work-
piece coordinate
system
D Reference position
return
D G22, G23
Explanations
D Setting the shape of the
chuck barrier

Leave a Reply

Your email address will not be published.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