Tip Mounting Position Error Detection - YASKAWA YRC1000 Operator's Manual

1.12.8.2 Tip Mounting Position Error Detection

1 Spot Welding Application Using a Motor Gun
1.12 Tip Wear Detection and Wear Compensation (Motor Gun)
The method to execute the tip mounting position error detection operation
by dry spot touch motion and by movable side tip detection motion are
described here.
The following two methods are for detecting the tip mounting position
error.
This operation must be performed after new tips are
mounted.
NOTE
If this operation is executed with the worn tip, signals on
wear (signal to request tip replacement, etc.) will not be out-
put properly since the wear itself is regarded as the tip
mounting position error.
 When the wear amount is imported to a tip mounting position error
after a wear amount detection job is executed.
Apply this method when wear detection and tip mounting position error
detection are to be executed in the common job.
• Dry spot touch motion (TWC-A)
The gun axis position is acquired when the movable side tip touches
the fixed side tip.
Execute SVGUNCL instruction (dry spot) for the dry spot touch
motion.
<Example>
SVGUNCL GUN#(1) PRESSTWC TWC-A
• Movable side tip detecting motion (TWC-B)
The gun axis position is acquired when the movable side tip position
is detected.
Execute SVGUNCL instruction (dry spot) for the movable side tip
detecting motion.
<Example>
SVGUNCL GUN#(1) PRESSTWC TWC-B
After wear is detected by the above mentioned instruction, import the wear
amount to the tip mounting position error on the SPOT SUPERVISION
window.
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