Quality characteristics of gearing

Abstract

Gears are the basis of most of the mechanics that drive machinery, ultimately determining their efficiency and durability. Selection of the parameters of gears is carried out by their quality characteristics. Analysis and synthesis of gears and machine engagements uses three types of quality characteristics: characteristic of gears, characteristic of machine engagements and universal characteristics. Each of these types is divided into local and global quality characteristics. The article suggests a classification of local and global quality characteristics, focused on a common approach to their calculation and display through computer analysis and synthesis of various gears. The developed system of primary characteristics is described, which is a set of simple local quality characteristics. These primary characteristics are invariant to the mechanism scheme and coordinate system used by analysis and synthesis of gears. Using these primary characteristics can calculate any of the considered local and global quality characteristics of the gears or the machine engagements. Analysis of the quality characteristics of synthesized full-strength gears is carried out. To conduct this analysis, a synthesis algorithm is developed. Using this calculation algorithm, the gears with constant tension along the engagement line are synthesized. The sensitivity of the synthesized gears to changes in the axle distance is analyzed. This analysis is carried out for gears with different gear ratios. The complex research is the basis for the development of interactive optimization synthesis of gears with the specified strength properties.