Transmission and load analysis for a crowned helical gear pair with twist-free tooth flanks generated by an external gear honing machine

Abstract In the high speed rotational gearbox, the tooth surfaces of gears are usually crowned with twist-free tooth flanks to reduce the vibration and noise of the gear systems due to the transmission error and load variation. In this paper, a method for longitudinal crowning tooth flank of work gear surfaces is proposed by setting a crossed angle between the honing cutter and work gear axes as a linear function of work gear's traverse feed and a variable pressure angle (VPA) honing cutter is also used for free twist of the crowned tooth flank in the external honing process. Besides, the transmission and load characteristics of the gear pairs using a crowned pinion with twist-free tooth flanks are need to understand. Therefore, 3-D models of the meshing gear pairs with twisted and twist-free tooth flanks are constructed and analyzed by using KISSsoft software. Three numerical examples are presented to illustrate and verify the merits of the proposed gear honing methodology as well as shed light on the transmission and load characteristics of the gear pairs with twist-free tooth flanks.

[1]  Faydor L. Litvin,et al.  Computerized Design, Generation and Simulation of Meshing of Modified Involute Spur Gears With Localized Bearing Contact and Reduced Level of Transmission Errors , 1997 .

[2]  Van-The Tran,et al.  Tooth Contact Analysis for a Double-Crowned Involute Helical Gear With Twist-Free Tooth Flanks Generated by Dual-Lead Hob Cutters , 2015 .

[3]  Faydor L. Litvin,et al.  Reduction of noise of loaded and unloaded misaligned gear drives , 2006 .

[4]  Chung-Biau Tsay,et al.  Stress analysis of a helical gear set with localized bearing contact , 2002 .

[5]  Tao Yu,et al.  Improving the Precision of Gear Honing with External Honing Ring Using Diamond Dressing Gear , 2010 .

[6]  Seung-Ho Han,et al.  Contact stress analysis for a pair of mating gears , 2013, Math. Comput. Model..

[7]  Van-The Tran,et al.  A Novel Finish Hobbing Methodology for Longitudinal Crowning of a Helical Gear With Twist-Free Tooth Flanks by Using Dual-Lead Hob Cutters , 2014 .

[8]  Faydor L. Litvin,et al.  Computerized generation and simulation of meshing of modified spur and helical gears manufactured by shaving , 2001 .

[9]  F. Litvin,et al.  Gear geometry and applied theory , 1994 .

[10]  Atanasovska Ivana,et al.  Finite element model for stress analysis and nonlinear contact analysis of helical gears , 2009 .

[11]  Shuting Li.  Finite element analyses for contact strength and bending strength of a pair of spur gears with machining errors, assembly errors and tooth modifications , 2007 .

[12]  Van The Tran,et al.  A Methodology for Longitudinal Tooth Flank Crowning of the Helical Gear on a CNC Honing Machine , 2015 .

[13]  Jose L. Iserte,et al.  A Finite Element Model for Consideration of the Torsional Effect on the Bearing Contact of Gear Drives , 2012 .