View source for Feed Axis Faults During Feed Bending

During Feed-Bending it is possible to experience a Feed Axis Fault that is caused by the wrong tool radius values or an incorrect Feed Axis Adjust % value.  Both are in the Tool Page.
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Quick indicators that should make you suspect that this is the case:
* The Feed Axis faults especially on large angle bends
* The Feed Axis does NOT fault when moving the bender through the cycle with no material in the machine.
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==Diagnostic 1 - Check the Bend Die Radius Values==

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Possible Problem: The Centerline Radius values do not to match the bend die radii on the bender.
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If the radius value is incorrect, then the Feed motion calculated will probably be incorrect.  For example, a 90 degree bend angle on a 70 mm radius will move the Feed axis about 110mm.  However, if your bender actually uses a 50 mm bend die, then the correct Feed axis motion is about 79mm.  The difference of 31mm could easily cause the Feed axis to show a fault condition.
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[[image:cncbender_toolpage_radius.jpg|550px]]
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==Diagnostic 2 - Check the Feed Axis % Values==
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Possible Problem: The Feed Axis Adjust % Value is not set to the proper value in the Tool page.
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This value compensates for elongation during Feed-Bending.  It is a negative integer value that indicates how much carriage travel to remove from the motion.
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Here's an example:

*At Feed Adjust Percent of 0%, the calculated feed motion for 155.6 degrees of bend is 8.1"<br><br>
*However the actual motion of the Feed axis is 7.5"<br><br>
*The Feed Adjust Percent is therefore -7.4<br><br>

Enter that value into the Feed Adjust Percent field and press AutoBuild

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[[image:cncbender_toolpage_feedadjustpercent.jpg|550px]]
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==Other Pages==
*Back to [[CNC Bender Technical Notes]]