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3D graphical method for profiling gear hob tools

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Abstract

This paper approaches the issue of profiling gear hob bounded by a cylindrical helical surface with constant pitch, reciprocally enveloping with an ordered surfaces curl. The process kinematics of generation reproduces the 3D gear between the worm and the wheel. This gear has crossing axes and it is used for the profiling of the primary peripheral surface of the gear hub in the intermediary surface method (the common rack-gear of the surfaces curl to be generated and the primary peripheral surface of the gear hob). An algorithm in the CATIA design environment is presented, based onto an original method for the determination of the reference rack-gear form—the rack-gear reciprocally enveloping with the surfaces curl, using the principle of the cylindrical helical motion decomposition in translation and rotation motions. Graphical and analytical profiling examples are presented for the gear hob for generation of a parallel spline shaft and for the generation of a toothed wheel with involute teeth. Solutions for the interference problems, problems due to the singular points onto the profiles, are presented.

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Authors and Affiliations

  1. Manufacturing Science and Engineering Department, “Dunărea de Jos” University of Galaţi, Galaţi, Romania

    S. Berbinschi, V. Teodor & N. Oancea

Authors
  1. S. Berbinschi
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  2. V. Teodor
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  3. N. Oancea
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Corresponding author

Correspondence to V. Teodor.

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Berbinschi, S., Teodor, V. & Oancea, N. 3D graphical method for profiling gear hob tools. Int J Adv Manuf Technol 64, 291–304 (2013). https://doi.org/10.1007/s00170-012-3989-3

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  • DOI: https://doi.org/10.1007/s00170-012-3989-3

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