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The addendum circle coincides with the tops of the teeth of a gear and is concentric with the standard pitch circle and radially distant from it by the amount of the addendum. For external gears, the addendum circle lies on the outside cylinder while on internal gears the addendum circle lies on the internal cylinder.
Printed dictionaries and other books with definitions for Addendum circle
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Design of Machine Elements (2010)
by V. B. Bhandari
Addendum Circle The addendum circle is an imaginary circle that borders the tops of gear teeth in the cross section. (xiv) Addendum (ha) The addendum ( ha) is the radial distance between the pitch and the addendum circles. Addendum ...
by Sadhu Singh
Addendum circle The addendum circle is a circle bounding the top of the teeth.
Mechanism and Machine Theory (2007)
by R V Dukkipati
The addendum circle is a circle which passes through all ...
Bildwörterbuch Maschinenbau und Elektrotechnik by Heinz K. Flack, Georg Möllerke
addendum circle Kopfkreis ( Zahnrad) add, ...
Chandler's Encyclopedia (1898)
An Epitome of Universal Knowledge ... by William Henry Chandler
Addendum Circle. In toothed searing, circle which limits the projection of the teeth beyond the pitch circle of the wheel. Usual values for difference between the pitch radius and addendum radius range from .30 to .35 of the circular pitch.
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