
OPERATION6. SAFETY FUNCTIONS
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If the tool is positioned to the normal height (for punching), as shown
below, the tool will interfere with the workpiece holder when the
workpiece holder moves into the turret.
By means of this function, the CNC monitors the positions of the tool and
workpiece holder to avoid interference between the workpiece holder and
tool.
Tool status in punching
Workpiece holder
Upper Turret
Lower Turret
Tool escape status
Fig. 6.6
By setting bit 6 (ACZ) of parameter No. 16502, the user can select either
of two interference avoidance methods. Refer to the manual of machine
tool builder whether A or B:
1 Type A: Interference is avoided by the PMC, by using the DI/DO
signals. The specifications of type A are depended on
machine tool builder’s. Refer to the manual of machine tool
builder for details.
2 Type B: Interference is automatically avoided by the CNC. This
manual describes only for type B.
6.6
WORKPIECE
HOLDER
INTERFERENCE
AVOIDANCE
FUNCTION