There are two major intentions to apply face gears in powertransmissions: the advantage to be able to use a cylindrical gearas a pinion member; and particular design solutions which require aplurality of cylindrical driving members as in a propulsion system.While the automotive and truck industry conducted substantialresearch in the application of face gear systems in their drivetrains, the results did not favor face gears versus bevel andhypoid gears. In many cases, the face gear system was found to bethe less economical solution, as the manufacturing of the face gearitself was expensive. Machine tools require a special design, arenot readily available, and the cutting tools have to be designedspecifically for the particular face gear design. The obstacleswhich prevented manufacturers in the past to apply face gears wereremoved entirely, when a new way of forming the profile of facegear teeth, using standard bevel gear cutting and grinding machinesas well as standard cutter heads was designed. The idea is based onthe tools used in straight bevel gear cutting and grindingaccording to the CONIFLEX method, however, using a generating gearwhich is not flat like it is for straight bevel gears butcylindrical, resembling the mating cylindrical pinion for theparticular face gear design. The complexity of modified cylindricalhobbing and shaping machines and job dependent custom toolingdisappears completely with the new CONIFACE cutting and grindingprocess.
- Edition:
- 11
- Published:
- 10/01/2011
- Number of Pages:
- 14
- File Size:
- 1 file , 820 KB
Reviews
There are no reviews yet.