Abstract
Industrial robot is a potential alternative of machining tool in some certain process due to its flexibility and large workspace. The traditional stiffness model of robot cannot explain the situation that stiffness exits difference in opposite directions. Aiming at optimizing the robot side milling process, a measured stiffness performance evaluation index is proposed in this paper. It is deduced and calculated through actual measured data, which overcomes the shortcoming of other indexes deduced from traditional stiffness model. Experimental case indicates that the new index proposed in useful in feed direction and tool-workpiece relative position optimization.
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