A PROBLEM OF TOLERANCE CALCULATION OF SERIAL MANIPULATORS BASED ON PROCESSING TECHNOLOGY

Abstract

In mechatronic systems, the final quality assurance of accuracy often leads to the problem of ensuring the tolerance of actuator at the previous stage and the control problem at later stages. This paper introduces a numerical method of calculating fabrication tolerance for the mechanical structures of robots, in which sensibly allocating the tolerance values for each link so that the manufacturing cost is the lowest, paid particular attention to. The concept of the accuracy/ the reach ratio is given to characterize the design quality – mechanical fabrication of robots. We propose initial approximation values and use the numerical method, proposed by the group, to determine its optimal stop values, thereby determine the calculated tolerance of the robot. The results showed that the structure simultaneously ensures both economics and technicality. This method can be used for reference in actuator design of manipulators.