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Figure 8: Parallel depth, no slot depth taper
Parallel depth couplings are often chosen as fixed couplings where the mem-
bers are permanently bolted together. The graphic shown in Figure 8 has a
pressure angle of zero degrees and is assembled without top-root clearance
and without any backlash as transitional fit.
Figure 9: Duplex taper with parallel root
Figure 9 shows a Coniflex coupling with a duplex taper. The graphic repre-
sents the case, where the Coniflex coupling duplicates precisely the geometry
of a Hirth coupling. The root width is parallel and the root fillet is rounded with
a uniform radius along the face width.
12.3.4 Flank Surfaces and Tooth Contact Analysis
Flank surface generation and tooth contact analysis are standard features in
the GEMS software system for Coniflex couplings. In Figure 10 a tooth contact
analysis with Ease-Off and contact pattern is shown. The Ease-Offs have a
length crowning of 20 microns and no profile crowning. Length crowning is real-
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