Application setup
Calibrating a Vision System Offset for a Robot
For integrators establishing the coordinate relationship between a camera and the robot so vision-guided positions translate accurately into robot moves.
- Step 1.
Mount the calibration target
Place the calibration grid or fixture in the camera's field of view at the working distance used in production.
- Step 2.
Capture calibration images
Follow the vision software's procedure to capture images of the target, moving the robot or target as instructed to build the calibration model.
- Step 3.
Teach the corresponding robot points
Jog the robot to touch or align with known points on the calibration target so the software can relate camera coordinates to robot coordinates. Jog in T1 low speed with the deadman held and the cell clear of other people.
- Step 4.
Run the calibration calculation
Execute the software's calibration routine and review the reported accuracy or residual error.
- Step 5.
Verify the offset with a test part
Present a part at a known offset position and confirm the robot moves to the vision-corrected location within the required tolerance.
- Step 6.
Test across the working area
Repeat verification at multiple locations within the camera's field of view, not just the center, to confirm consistent accuracy.
- Step 7.
Lock and document the calibration
Save the calibration data and record the verification results for future reference and periodic re-check.
Common questions
- How long does Calibrating a Vision System Offset for a Robot take?
- Calibrating a Vision System Offset for a Robot is rated Advanced and takes about 90 minutes across 7 steps.
- What tools do I need?
- You will need Vision system with calibration target, Teach pendant, Calibration fixture or dot grid appropriate to the vision software.
- What should I do before starting?
- Camera mounted and focused with stable lighting. Vision software installed and communicating with the robot controller.
- What is the first step?
- Mount the calibration target. Place the calibration grid or fixture in the camera's field of view at the working distance used in production.