Analysis of static loading of meshing in planetary cycloid gear

Abstract

Abstract A main feature of planetary cycloid gears is multi-pair contact of pin-rollers and teeth of cycloidal disk. The use of schemes with great number of parallel contacts requires adoption of measures to ensuring of assembly of toothed wheels by introducing into design of pliable elements or guaranteed gaps in contacts. On basis of discrete model of force interaction of gearing elements of planetary cycloid gear the article proposes a decision of problem of gaps effect in gearing to load distribution at contact pairs. Analysis of effect of output moment, resource and operating modes of gear on forces in contact is performed. Effect of stiffness of gearing elements on size of contact zone and forces acting in gearing is shown. Law of change of forces acting in gearing in operating gear, taking into account errors of its manufacturing is established. It is shown that during the gear operation there is a continuous change of forces in contact pairs, accompanied by a rearrangement of contact zones at certain angles of rotation. The presented decision can be used, including for analysis of options for ensuring acceptable values of maximum loads due to increasing accuracy of manufacturing of gearing elements or using constructions with increased pliability.