In form tapping, the generation of unfinished thread forms results in the appearance of split crests. An experimental technique is developed to study the nature of split crest formation. Custom tools are modeled after tap tooth geometry to perform the forming process in a vertical milling machine. Single-tooth experiments replicate the initial deformation stages and determine the tap geometry and tapping process parameters that significantly affect ridge size and shape. This method is then expanded to consider two axially consecutive tap teeth and the interaction of consecutive ridges to create the final thread form. It is found that certain tap geometrical characteristics are important to the final thread form and, therefore, determine the size and shape of the resulting split crest.
Skip Nav Destination
Article navigation
November 2005
Technical Papers
Experimental Investigation of Thread Formation in Form Tapping
Curtis Warrington,
Curtis Warrington
Graduate Research Assistant
Department of Mechanical and Industrial Engineering,
University of Illinois at Urbana-Champaign
, Urbana, IL 61801-2906
Search for other works by this author on:
Shiv Kapoor,
Shiv Kapoor
Professor
Department of Mechanical and Industrial Engineering,
University of Illinois at Urbana-Champaign
, Urbana, IL 61801-2906
Search for other works by this author on:
Richard DeVor
Richard DeVor
Professor
Department of Mechanical and Industrial Engineering,
University of Illinois at Urbana-Champaign
, Urbana, IL 61801-2906
Search for other works by this author on:
Curtis Warrington
Graduate Research Assistant
Department of Mechanical and Industrial Engineering,
University of Illinois at Urbana-Champaign
, Urbana, IL 61801-2906
Shiv Kapoor
Professor
Department of Mechanical and Industrial Engineering,
University of Illinois at Urbana-Champaign
, Urbana, IL 61801-2906
Richard DeVor
Professor
Department of Mechanical and Industrial Engineering,
University of Illinois at Urbana-Champaign
, Urbana, IL 61801-2906J. Manuf. Sci. Eng. Nov 2005, 127(4): 829-836 (8 pages)
Published Online: January 12, 2005
Article history
Received:
January 16, 2004
Revised:
January 12, 2005
Citation
Warrington, C., Kapoor, S., and DeVor, R. (January 12, 2005). "Experimental Investigation of Thread Formation in Form Tapping." ASME. J. Manuf. Sci. Eng. November 2005; 127(4): 829–836. https://doi.org/10.1115/1.1951784
Download citation file:
Get Email Alerts
Related Articles
Die Face Morphing With Formability Assessment
J. Manuf. Sci. Eng (February,2011)
Modeling of the Thread Milling Operation in a Combined Thread/Drilling Operation: Thrilling
J. Manuf. Sci. Eng (February,2010)
Modeling Machining Geometric Variation in a N - 2 - 1 Fixturing Scheme
J. Manuf. Sci. Eng (February,2006)
A Contribution to Improve the Accuracy of Chatter Prediction in Machine Tools Using the Stability Lobe Diagram
J. Manuf. Sci. Eng (April,2014)
Related Proceedings Papers
Related Chapters
Introduction and Definitions
Handbook on Stiffness & Damping in Mechanical Design
Supporting Systems/Foundations
Handbook on Stiffness & Damping in Mechanical Design
Understanding the Problem
Design and Application of the Worm Gear