Robotic Repeatability Testing at RobotWorx
Robot repeatability testing is a critical component of RobotWorx' reconditioning process. Our Repeatability Cart accurately tests each used robot and compiles the data to make sure the robot is functioning like new.
Repeatability is the ability of a robot to return to the same spot with only the slightest variation. Robotic repeatability varies by robot, but generally ranges between +/-0.02mm to +/-0.4mm and is very important to robot performance. It is achieved when multiple robot components - controls, motors, gears, axes - work together. When robot repeatability numbers are not within the correct range, each axis is tested so the problem can be pinpointed and corrected.
How Does the Repeatability Cart Work?
RobotWorx tests each used robot for a minimum of eight hours. The robot is programmed to run cyclically - stopping at the same spot for the cart's pneumatic sensor to measure its position.
New Sensor Style:
RobotWorx uses a pneumatically powered General Purpose Digital Contact Sensor from Keyence. Previously, RobotWorx' sensor required the robot to press it at the end of each cycle. Now the 32mm high-tech sensor moves on its own to test the position of the robot. This leads to less wear and tear on the sensor. This sensor is also easier to install and water-resistant (IP67 rating).
The RobotWorx cart also has leveling pads. This increases the reliability of the data collected.
The robot repeatability cart features a new computer for storing the repeatability data. Faster processing speed allows for a faster assessment.