Analysis of the geometry and contact density of globoid gearing

Aleksandr Vyatkin,A Glezer,S Roshchupkin

doi:10.1051/matecconf/202032903008

Abstract

Globoid worm gears have been widely applied in a range of technological branches in which other types of worm gears are less effective. The main functional indicators which facilitated their popularity include high load capacity and durability, low vibroactivity and small energy losses. As the experience of application and the results of the study of globoid worm gears showed, the level of operational properties of globoid gears is higher than that of the others only if the gearing and technological parameters of their manufacturing are optimally chosen during the design stage. This paper describes a method for estimating the gearing parameters of a globoid gear with an account of the geometry of the elements (the geometry of the teeth of the wheel and the worm thread), namely the calculation of the gap fields in the globoid gearing by means of numerical methods.

Highlights

The design of worm gears requires consideration of a large number of factors caused by operating conditions, a variety of shapes, sizes and options of transmission design. This is possible only if rational gearing parameters which take account of the manufacturing process are selected at the design stage
The solution to the problems arising when designing and manufacturing worm gears is based on operational experience and experimental research
The approach to calculating the geometry of globoid gearing which is described in the article is based on the principles developed by the Russian school of theory and geometry of worm gears, globoid ones

Summary

Introduction

The design of worm gears requires consideration of a large number of factors caused by operating conditions, a variety of shapes, sizes and options of transmission design. This is possible only if rational gearing parameters which take account of the manufacturing process are selected at the design stage. The solution to the problems arising when designing and manufacturing worm gears is based on operational experience and experimental research. The proposed method of computer modeling allows us to take into account different variants of technological processes when manufacturing globoid gears, which substantially reduces the costs and the timing for choosing gearing parameters

Questions of the theory of production and analysis of globoid gears

Conclusion