International Journal of Engineering and Technology

Robots are being used in many areas. The robot performance constrains are repeatability and accuracy. Standardised testing and evaluation techniques are needed to examine the process capability of a wide variety of robot. Robot calibration is a term applied to the procedure used in determining actual values which describe the geometric dimensions and mechanical characteristics of a robot. The robot accuracy evaluation method is introduced using ball-link system. To define individual error sources of the robot, is difficult because robots have jointed multi-axes and this can pose severe problems when trying to isolate the individual errors related to one axis. The error sources are determined using one or two axes operation. The datum location error of the axes is evaluated using a simple geometric method. Also the combined datum location error of the robot is evaluated using a ball-bar link system. The errors is analysed by assessment of the shape and error band of circular motion. The datum location error of robot axes is analysed