Papers by Author: Dan Perju

Abstract: In the last two decades most information sources both old and new were digitized or prepared directly in digital form. This process allows a better accessibility and visibility of information throughout the world. In order to find useful information easily and quickly, it is important to have a coordinated search engine. The paper deals with the development of a demonstrative digital technical library. The controlled search engine is based on the multilingual illustrated micro-thesaurus in the technical field of mechanisms science according to the librarian indexation rules. Some search possibilities are presented.

Abstract: The paper proposes two methods for kinematic analysis of a belt mechanism with circular eccentric output element (link). One of them is based on the mechanisms geometry and the second on its kinematics in order to obtain the transmission functions of different order. Both approaches are based on a imaginary cam mechanism instantaneous isokinetic with the given belt mechanism. The transmission functions obtained by means of proposed procedures are in a numerical form due to the finite incremental method used in solving the problem.

Abstract: The manipulators, used to handling products or devices in industrial departments, needs to be self-balanced in order to compensate the different weight of the load in its position in the workspace. The known technical solution for self-balancing with counterweight, springs and actuators can be substituted through a band mechanism. The paper proposed a new self-balancing solution for the conco-balancer manipulator with band mechanism and presents its synthesis approach. The non-circular profile of the band mechanism permits the variation of the compensated moment in order to be easy manipulated the load by the operator.