5238-E P-323
SECTION 14 OTHER FUNCTIONS
2.
Barrier Check Function
2-1.
General Description
The barrier check function permits a chuck/tailstock barrier (a specific machine area into which any
cutting tool entry is prohibited) to be established in the vicinity of a chuck/tailstock on the basis of
data in a program or entered through MDI switches. If a tool is commanded to move inside the
barrier, an alarm occurs and stops machine operation.
This function makes it possible to carry out trial operation in the automatic mode or cutting in the
MDI mode without worrying about cutting tool collisions. In addition, it prevents accidents where a
cutting tool strikes the chuck or tailstock due to an unexpected problem during automatic operation.
2-2.
Chuck Barrier and Tailstock Barrier
2-2-1. Establishing a Chuck Barrier
The chuck barrier function can set an area around the chuck into which tool entry is prohibited, and
which is matched to the chuck shape: this is not possible with variable soft-limit position data.
Activation or deactivation of the chuck barrier function can be selected by programming the
appropriate M code. Therefore, the tool motion using the chuck barrier function can be checked
when required.
LE33013R0301600030001
OD gripping
ID gripping
Chuck barrier:
Tool entry inhibited area
Program zero
Program zero
L
L
D
X
X
L1
L1
A
A
D1
D1
CZ
Z
Z
Point A
CX
CZ
CX
