Study On Machining Technology And Meshing Performance Of Arthogonal Face-gear

Face-gear transmission is an innovative gear drive that a cylindricalgear meshes with a bevel gear wheel with advantages of simple structureand light weight etc. The face gear’s special split-flow characteristicmakes it have a potential predominance in aviation field, especially inapplication of the new combat helicopter. In this paper, according to theprocessing principle and method of face gear, calculate the path ofcontact surface of gear transmission and the machining simulation of facegear. Simulations and experiments on the meshing performance of a facegear were also conducted, which provide important bases for themanufacture and practical application. Its main contents are as follows:Face-gear solid modeling and contact analysis. Equations offace-gear tooth surface and blending surface were derived, and theminimum inner radius and maximum outer radius of face gear weresolved in conditions of no undercutting and pointing. Tooth surfacevisualizing and solid modeling of face gear were achieved on the basis ofcoordinate points of face-gear tooth surface. With contactingcharacteristics between the slotting cutter or cylindrical gear and facegear, the corresponding contact-track equation was derived and visualsimulation and analysis on the contact-track were conducted.Analysis on deviation and contact of face-gear tooth surface basedon gear-grinding machining. According to characteristics and meshingtheory of gear-grinding machining, tooth surface equation of wormgrinding wheel was derived, the condition that with no undercutting wasobtained, and the solid modeling of grinding wheel was achieved withcoordinate points of grinding wheel tooth surface. A deviation analysiswhich was between face-gear grinding tooth surface and theoretical toothsurface was performed. In addition, contact positions of grinding wheeland face-gear tooth surface were calculated and visualizing analyzed.Tooth grinding machining simulation of face gear. Simulations offace-gear grinding machining were performed with the use of secondarydevelopment technology on CATIA. And face-gear tooth profiles werecompared with that after grinding to verify grinding method and veracity of grinding wheel modeling.Face-gear meshing simulation and performance analysis. With theuse of ADAMS, meshing simulations of cylindrical gear and face-gearwere conducted. And simulation results were compared and analyzed toresearch effects of rotational speed of cylindrical gear and tooth numberdifference of slotting cutter on the face-gear transmission error andacceleration, and analysis results were obtained.Experimental study on face-gear meshing performance. Meshingexperiments were performed with the change of rotational speed andtooth number of cylindrical gear respectively. And experiment values offace-gear transmission error and rotational noise were obtained in thecorresponding condition. Study the effects of the rotational speed andtooth number of cylindrical gear on face-gear meshing performance, andverify the analysis results of simulations.