Hi,
We are installing a client system with dual Linear Rails - I am working on one rail at a time.
The issue I have is this.
1. I am using a KRC4 controller.
2. The rail/track is custom built - connected on the E axis and part of the kinematic chain.
3. We have a 10 meter measure on the physical track and in the workplane area - and have set gear ratios accordingly.
4. The tool we are using has been calibrated on the controller and PowerMill - both concur.
5. If I set the tool tip (a calibration spike) to the 10 meter mark on a point on the workplane and the the robot to halfway down the track the X-movement is perfectly calculated by the controller and matches a physically measured distance.
5. However when I program a point to meet the calibrating position at 10 meters there is at lease 5mm+ on the one track and 2mm- on the other.
How can this be so - when we orient the robot into the workplane and jog it along the rail from one measured point to the next the values displayed on the SmartPad match those measured physically?
Please can someone provide some guidance on what may be causing these discrepancies?
Thank you.