FRICTION INFLUENCE REDUCING BY USING LINER BEARINGS AND BALL SCREW SHAFTS IN MINI-PLATFORMS

Abstract

With the constant progress of technology in mechanical engineering, a very rapid development of linear units and elements is present. Linear units and elements involves exercise and installations for rectilinear movement. This paper is an analysis of mini-platforms that uses plain bearings and power screw with trapezoidal thread. Friction resistance of platform movement is analyzed as well as its influence over the power of the machine drive. For the analysis of the friction resistance the known analytical models for plain and linear bearings and power screws are used. In terms of platform manufacturing, an analysis of the disadvantages of usage of these elements was also conducted. After the analysis with plain bearings and the power screw with trapezoidal thread, the change has been made to the replacement of these elements with linear bearings and ball screw shaft. After the change of mini-platform elements a comparative analysis related to the previous situation has been conducted. Through the paper the benefits of using these types of linear elements is highlighted. PapePaper concludes with given directions and possibilities for further investigation of this attractive research topic.