Dynamics Analysis Of Mechanical Errors On Quasi-Transverse-Circular-Arc Gear

Gear is a kind of mechanical parts have teeth to engage each other, its application in practice production has a long history. In order to extend the life of the transmission gear and avoid its size is too large, in1907the British scholar Humphris put forward the idea of circular arc tooth, since then opened a prelude to the research and application of circular arc gear. The circular arc gear is a kind of high capacity power transmission gear. The bending strength and contact strength of tooth profile of circular arc gear so that it has higher. Because the normal section tooth profile gear is a circular arc tooth, so there exists the bending strength of error on gear actual contact position and larger root not two deficiencies. Quasi-transverse-circular-arc gear is put forward under this background.This topic is based on the analysis and research of the double circular arc gear meshing surface characteristics and sensitivity, The establishment of parametric space model quasi-transverse-circular-arc gear by Pro/ENGINEER. Effects of meshing characteristics using the ADAMS dynamics simulation software of mechanical error at end of the double circular arc gear. Mechanical errors affect the mesh circular arc gear tooth surface, mechanical error of circular arc gear impact on transmission error, to further improve the contact circular arc gear tooth and has important significance to improve the dynamic performance of circular arc gear transmission.Based on the circular arc gear tooth conjugate principle as well as the benchmark of tooth profile of the circular arc gear, Obtained general equations of circular arc gear tooth profile curve. Universal transverse tooth profile expression by change between β and β0respectively can be normal-plane、 transverse-plane、quasi-transverse-circular-arc gear.Through the universal transverse tooth profile expression quasi-transverse-circular-arc gear, established the parametric model of quasi-transverse-circular-arc gear with Pro/ENGINEER software, parametric assembly model based on the continuous adjustment of parameter values, you can get different mechanical error meshing model quasi-transverse-circular-arc gear.Based on the theoretical principle of mechanical error and the transmission error, derived from the transmission error in the presence of helix angle error and axial misalignment of the equation. Quasi-transverse-circular-arc gear in the guarantee under the condition of enough strength, appropriate increase of helical gear is smooth to drive process, at the same time reduces vibration and noise of gear; Influence of phase angle error axis parallelism error produced in the△rx pairs of gears with intersecting angle error influence of Ary large generated. In this paper, the movement simulation of circular arc gear dynamics model of helix angle error in ADAMS, obtained the angular velocities of the driven gear helix angle error. The mechanical error has an important influence on the non-uniform angular movement between the gear, Is the main cause of the gear vibration and noise.