In the design process of gearboxes, common requirements are highload capacity and low noise excitation. Reaching both goals islaborious and normally requires a trade-off. Detailed analyses ofcontact conditions and deformations are necessary. These shouldtake place in an early design stage to realize a mostlystraightforward design approach and prevent late designchanges.
Focused on cylindrical gears, the paper covers an approachstarting at the first draft of a gearbox. Defining themacrogeometry of the teeth regarding load capacity calculationaccording to standards leads to a reasonable gear design. On thatbasis, the micro geometry of the teeth is specified and loaddistribution as well as noise excitation is calculated. The designparameters are interdependent so provisions have to be made toadjust each step on the remaining ones. Effects resulting fromchanging profile contact ratio under load and contact patterns notcovering the whole flank have to be regarded. The beneficial effectof a modified microgeometry is dependent on the ability toprecisely account for contact conditions and meshingclearances.
To find an optimal solution for the competing goals of capacityand excitation, detailed calculation methods are required. To beable to apply latest research results, these are implemented inhighly specialized software. The task described above is handled byusing the software that was developed at the Gear Research Center(FZG) with funding by the German Research Association for Gears andTransmissions (FVA). The underlying calculation methods andanalyzed phenomena are covered.
- Edition:
- 13
- Published:
- 09/01/2013
- Number of Pages:
- 14
- File Size:
- 1 file , 900 KB
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