Optimization of the Guiding System for Eccentrically Loaded Slide Ways

Abstract

Proper selection of slide ways of machine tools has the exceptional influence on machining precision and quality of the machines surface. All errors that arose as a consequence of clearance between the sliding su.rfaces or deformations in the contact zone directly affect the machining error. In order to ensure mobility of slide ways, it is necessary that a clearance exist in sliding joints. Under the influence of eccentric load the twisting of the cross section of the slide way occurs, which can lead to appearance of self-braking, namely the blocking of slider's motion along the slide ways. To prevent that it is necessary that the length of a slider is as large as possible with respect to its width. Since the increase in size of the stand also leads to increase of the slide ways, the whole machine, and by that also its weight and price, that solution of this problem requires more complex analysis, especially om the tribological aspect. This paper presents an attempt of solving the undesired effect of slide ways self-braking. Through theoretical analyses