Methods to Determine Form Diameter on Hobbed External Involute Gears


Two mathematical methods have been developed to be used for the calculation of true involute form diameter when specialized software or original gear designer information is not easily accessible. These methods are designed for external involute gears produced by the hobbing process, possibly followed by a finishing operation. Method A is a more precise match, but it requires special inputs that may be time consuming without special software. Method B, although not as accurate, still has relative error of TIF diameter below 0.1% over wide ranges of gear design parameters. Method B is also easy to apply and can be integrated into most existing gear design programs.

ISBN: 978-1-64353-005-5
Pages: 16
Author: Shuo Zhang

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