4. REFERENCE POSITION ESTABLISHMENT
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This function automates the procedure of butting the tool against a
mechanical stopper on an axis to set a reference position. The purpose of
this function is to eliminate the variations in reference position setting that
arise depending on the operator, and to minimize work required to make
fine adjustments after reference position setting.
Select the axis for which the reference position is to be set, then perform
cycle start. Then, the following operations are performed automatically:
1. The torque (force) of the selected axis is reduced to make the butting
feedrate constant, and the tool is butted against the mechanical stopper.
Then, the tool is withdrawn a parameter–set distance from the
mechanical stopper.
2. Again, the torque (force) of the selected axis is reduced, and the tool
is butted against the mechanical stopper. Then, the tool is withdrawn
a parameter–set distance from the mechanical stopper.
3. The withdrawal point on the axis is set as the reference position.
(1)First, set the parameters required for butt–type reference position
setting.
ZMIx, bit 5 of parameter (No. 1006): Direction of reference
position setting
Parameter No. 7181: Withdrawal distance
Parameter No. 7182: Reference position setting
distance
Parameter No. 7183: Butting feedrate 1
Parameter No. 7184: Butting feedrate 2
Parameter No. 7185: Withdrawal feedrate in
reference position setting
Parameter No. 7186: Torque limit
(2)Select manual reference position return mode.
(3)By using a manual handle feed axis select signal, select the axis on
which the reference position is to be set.
(4)Perform cycle start.
This starts the cycle operation for reference position setting.
(5)During the cycle operation, the automatic operation start signal OP is
1.
4.6
BUTT–TYPE
REFERENCE
POSITION SETTING
General
Basic procedure for
butt–type reference
position setting