| Based on the problems betrayed in the design and manufacturing course about thespiral bevel gear, with the spiral bevel gear processing of Tangshan Aisin Gear Co. Ltd,being the background, the researching tasks have been as follows.The basis theory about the spiral bevel gear has been researched deeply. Thetraditional calculation about contact stress and bending stress of the spiral bevel gearbeing summarized, a computer-aided design system about the spiral bevel gear has beenexplored based on VB6.0. The selection of lots of processing coefficients, such asapplication factor, coefficient of elasticity and spiral angle coefficient of spiral bevel gear,has been programmed, without a complicated table and drawing look-up process. Thecalculation of contact and bending strength, the design of the gear geometry parametersand the calculation of the key way size have been done, according to the workingcondition and exerted load, the results being saved into a neutral file.In Pro/Engineer, the initial model of3-dimensional parameterized accurate modelingabout the spiral bevel gear has been created, according to the formula of sphericalinvolute tooth profile. VB have been associated with Pro/Engineer by AutomationGateway. And a3-dimensional accurate model can be created automatically according tothe data brought from the neutral file by VB.The single model of the spiral bevel gear created by Pro/Engineer and itscorresponding contact model can be saved as a "x_t" file, so as to be imported intoANSYS completely. In the APDL module, the model meshing and the analysis of contactstress and bending stress towards the spiral bevel gear have been done. |
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