1. bookVolume 16 (2022): Issue 1 (April 2022)
Journal Details
License
Format
Journal
eISSN
2601-5773
First Published
30 Dec 2018
Publication timeframe
2 times per year
Languages
English
access type Open Access

About the Grinding of Gear Hob’s Rake Face

Published Online: 18 Jul 2022
Volume & Issue: Volume 16 (2022) - Issue 1 (April 2022)
Page range: 31 - 35
Journal Details
License
Format
Journal
eISSN
2601-5773
First Published
30 Dec 2018
Publication timeframe
2 times per year
Languages
English
Abstract

The most simple and robust construction of the monolithic gear hobs present a common helical rake face for a given line of teeth, whose generatrix is a straight-line segment perpendicular to the hob’s axis while its directory is a helix, perpendicular to the pitch helix. As a consequence, constructive rake angles are zero on all edges. Total curvatures of such a surface are negative. Thus, it can be grinded only using the conical surface of a platter type grinding wheel, or a grinding bit. Despite this, some industry practices, possibly for reasons of simplicity and cost lowering, involve the plain grinding surface, supposed to a helical motion. This paper deals with the CAD-simulation of the grinding process using the plain wheel surface, and it shows the differences between the theoretical and rake face and the real obtained helical surface.

Keywords

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