The Calculation of Meshing Efficiency of a New Type of Conical Involute Gear

Abstract

A new type of conical involute gear, proposed in this paper, can be applied in precise gear transmission for adjusting the backlash because of the special characteristics of its teeth. The meshing states of parallel external gear transmission based on the proposed gears are analysed and presented. The expressions of the length of contact and relative sliding velocity at any meshing position are derived. Then, the calculation formula of meshing efficiency is given by utilizing the piecewise equivalent method. Next, the variation of the length of contact line, unit load, meshing efficiency in a meshing period with different gear parameters and different operations are illustrated by employing numerical examples, and the influences of gear parameters and operations on meshing efficiency of the proposed gears are discussed based on the computing results. In the end, the applicability of the calculation is introduced.

A Method for Calculating Elliptic Gear Transmission Efficiency Based on Transmission Experiment

“…The instantaneous rolling and sliding shear in lubricating oil are determined by transient pressure distribution and oil film thickness distribution, so as to determine the mechanical power loss of gear meshing. Li et al [18] determined the calculation formula of the meshing efficiency of the conical involute gear based on the piecewise equivalent method and analysed the influence of different gear parameters on the contact line length, unit load and meshing efficiency in the meshing period. Liu et al [1] and [2] constructed a non-uniform end face movable tooth transmission mechanism by combining the end face movable tooth mechanism and non-circular gear pairs and analysed the influence of tooth surface sliding friction on the transmission efficiency through simulation.…”

Simulation and Experimental Research on Electrical Control Anti-backlash Based on a Novel Type of Variable Tooth Thickness Involute Gear Pair

“…6, backlash is controlled by adjusting the relative axial displacement between the driving and the driven gear. The composite modified VTTG with left and right tooth profiles of identical tangential modification is introduced in [37], and the relationship between the axial displacement of the driven gear and the backlash can be expressed as follows:…”