Abstract
The geometric analysis of a face-gear hob is introduced in this article. We examined the logarithmic spiral and the Archimedean spiral backward-turned curves in profile distortion aspect. The cutting edge of the hob defines the face-gear dentation, which is why the equations of the cutting edge have to be known for manufacturing. We worked out the mathematical analysis of the backward-turned curves, the cutting edge, the face surface, and the relief side surface of the hob in general case. Based on these, we designed a conical hob, working out its three-dimensional virtual CAD model. Using rapid prototyping technique, we produced the real physical model of this hob, and the hob was actually manufactured. We carried out three-coordination measuring analysis of the rapid prototyping model and the actually manufactured model. We analyzed the measured results and presented the evaluation of our results.
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Appendix
Appendix
- CAD:
-
Computer aided design
- r :
-
Radius vector
- a:
-
Constant (if φ = 0, then r = a)
- m:
-
Constant exponent
- α:
-
Back angle
- K0 (ξ, η, ζ):
-
Coordinate system of generator curve motion
- K1F (x1F, y1F, z1F):
-
Coordinate system following a thread path, joined to worm surface
- K1 (x1, y1, z1):
-
Worm stationary coordinate system
- \( {\overrightarrow r_g} \) :
-
Leading curve in the K0 (ξ, η, ζ) tool coordinate system
- \( {\overrightarrow r_{{1F}}} \) :
-
The position vector of an oblique point fitted on thread surface
- z ax :
-
The K1 (x1, y1, z1) coordinate system removal value
- hr :
-
Value of relief
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Dudás, I., Bodzás, S. Production geometry analysis, modeling, and rapid prototyping production of manufacturing tool of spiroid face gear. Int J Adv Manuf Technol 66, 271–281 (2013). https://doi.org/10.1007/s00170-012-4323-9
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DOI: https://doi.org/10.1007/s00170-012-4323-9