pitch gear
61helical gear — noun also helical ( s) : a gear wheel having teeth set obliquely to the axis of rotation : screw wheel * * * a cylindrical gear wheel whose teeth follow the pitch surface in a helical manner. [1885 90] * * * helical gear, a gearwheel whose teeth… …
62herringbone gear — noun : a gear with double helical teeth inclined in reverse directions and making a herringbone pattern * * * a helical gear having teeth that lie on the pitch cylinder in a V shaped form so that one half of each tooth is on a right handed helix… …
63herringbone gear — a helical gear having teeth that lie on the pitch cylinder in a V shaped form so that one half of each tooth is on a right handed helix and the other half on a left handed helix. Also called double helical gear. * * * …
64helical gear — hel′ical gear′ n. mac a cylindrical gear whose teeth follow the pitch surface in a helical manner • Etymology: 1885–90 …
65crown gear — noun : a gear whose teeth project parallel to the axis and whose pitch surface is a plane see crown wheel * * * crown gear, = crown wheel. (Cf. ↑crown wheel) …
66helical gear — a cylindrical gear wheel whose teeth follow the pitch surface in a helical manner. [1885 90] * * * …
67chord pitch — noun or chordal pitch Etymology: chord (I) : distance between corresponding points of consecutive gear teeth measured in a straight line …
68circular pitch — noun : the distance between corresponding points of consecutive gear teeth measured along the pitch circle * * * Mach. See under pitch1 (def. 49a) …
69Standard pitch circle — The circle which intersects the involute at the point where the pressure angle is equal to the profile angle of the basic rack.1 Notes 1. ANSI/AGMA 1012 G05 , Gear Nomenclature, Definition of Terms with Symbols …
70normal pitch — noun : the distance between points of intersection of the line of action of gear teeth with the working faces of two adjacent teeth * * * Mach. See under pitch1 (def. 49a). [1895 1900] …
