Page 118 - Gear Technology Solutions
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Figure 2: Forging scale removed or backed in
A further obstacle with forged differential gears is the variation in tooth size,
indexing and flank form throughout the tool life of the die. This is also reflected
in the gear quality according to AGMA or other standards.
9.3 Conventional Straight Bevel Gears
Older straight bevel gear systems like Coniflex and other methods have been
developed for being manufactured on mechanical cutting machines. The
restrictions regarding cutter tilt and swivel angle required a specific machine
generating kinematic. For example, the cutter tilt angle in mechanical machines is
given by the machine design and cannot be adjusted. As a result, the generating
gear plane of these methods is aligned with the root cone of the work gear, such
that the blade tips in the rotating cutter head followed the root line.
Figure 3: Generating on the root line
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