ZPA Worms – Definition and Technology

Alexandru Pozdirca

doi:10.4028/www.scientific.net/AMM.658.129

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 658ZPA Worms – Definition and Technology

ZPA Worms – Definition and Technology

Abstract:

The article presents the definition of a new worm type called ZPA (Pseudo-Archimedes’ Worm), generated with standard cylindrical milling tools on NC lathe. First are showed the enveloping calculus for determining the contact line between the tool and the flank of the worm – considering cylindrical generating surfaces. Knowing the contact line, the axial profile can be determined and implicit the flank of worm. Applying some controlled corrections, this worm type can become a standard worm (ZA – for example). This process is assisted by CAD software, developed by the author. The second part approach ZPA worm’s technology: characteristics of the needed NC lathe, processing steps, tools, cutting conditions. The advantages of the ZPA worm type are: the use of standard tools with reduced costs and also short processing time; the possibilities to cover other standard worms, using the standard cylindrical milling tools and non-specialized NC machining tools.

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Periodical:

Applied Mechanics and Materials (Volume 658)

Pages:

129-134

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.658.129

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Online since:

October 2014

Authors:

Alexandru Pozdirca*

Keywords:

Cylindrical Worm, NC Lathe, Technology, ZPA

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