pitch surface

pitch surface
(in a gear or rack) an imaginary surface forming a plane (pitch plane), a cylinder (pitch cylinder), or a cone or frustrum (pitch cone) that moves tangentially to a similar surface in a meshing gear so that both surfaces travel at the same speed.
[1885-90]

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Universalium. 2010.

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Look at other dictionaries:

  • pitch-surface — see pitch n.2 26 …   Useful english dictionary

  • pitch surface — noun Etymology: pitch (IV) : the surface of either of two tangent imaginary friction wheels having the same axes and the same angular velocities as those of a pair of real gears in mesh * * * (in a gear or rack) an imaginary surface forming a… …   Useful english dictionary

  • Pitch plane — The pitch plane of a pair of gears is the plane perpendicular to the axial plane and tangent to the pitch surfaces. A pitch plane in an individual gear may be any plane tangent to its pitch surface.The pitch plane of a rack or in a crown gear is… …   Wikipedia

  • pitch cone — noun Etymology: pitch (IV) : a cone that constitutes the pitch surface of an ordinary bevel gear * * * Mach. See under pitch surface …   Useful english dictionary

  • pitch cylinder — noun Etymology: pitch (IV) : a cylinder that constitutes the pitch surface of a spur gear * * * Mach. See under pitch surface …   Useful english dictionary

  • Pitch circle — In mechanical engineering, a pitch circle (operating) is the curve of intersection of a pitch surface of revolution and a plane of rotation. It is the imaginary circle that rolls without slipping with a pitch circle of a mating gear.1 Notes 1.… …   Wikipedia

  • Pitch cone — A pitch cone is the imaginary cone in a bevel gear that rolls without slipping on a pitch surface of another gear. [ ANSI/AGMA 1012 G05 , Gear Nomenclature, Definition of Terms with Symbols .] Notes …   Wikipedia

  • pitch hyperboloid — noun Etymology: pitch (IV) : a hyperboloid that constitutes the pitch surface of a skew bevel …   Useful english dictionary

  • pitch cone — Mach. See under pitch surface. * * * …   Universalium

  • pitch cylinder — Mach. See under pitch surface. * * * …   Universalium

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