involute of a circle

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• Involute teeth — of spur gears, helical gears, and worms are those in which the profile in a transverse plane (exclusive of the fillet curve) is the involute of a circle. [ ANSI/AGMA 1012 G05 , Gear Nomenclature, Definition of Terms with Symbols .] Notes …   Wikipedia

• Involute — In the differential geometry of curves, an involute of a smooth curve is another curve, obtained by attaching an imaginary taut string to the given curve and tracing its free end as it is wound onto that given curve; or in reverse, unwound. It is …   Wikipedia

• Involute gear — Line of Action) runs along a tangent common to both base circles. (In this situation, there is no force, and no contact needed, along the opposite common tangent not shown.) The involutes here are traced out in converse fashion: points (of… …   Wikipedia

• involute — I. adjective Etymology: Latin involutus concealed, from past participle of involvere Date: 1661 1. a. curled spirally b. (1) curled or curved inward (2) having the edges rolled over the upper surface toward the midrib < an involute leaf > …   New Collegiate Dictionary

• involute teeth — (in gears) teeth having a profile that is the involute of a circle. * * * …   Universalium

• involute teeth — (in gears) teeth having a profile that is the involute of a circle …   Useful english dictionary

• Involute polar angle — Expressed as θ, the involute polar angle is the angle between a radius vector to a point, P , on an involute curve and a radial line to the intersection, A , of the curve with the base circle.1 Notes 1. ANSI/AGMA 1012 G05 , Gear Nomenclature,… …   Wikipedia

• Involute roll angle — Expressed as ε, the involute roll angle is the angle whose arc on the base circle of radius unity equals the tangent of the pressure angle at a selected point on the involute.1 Notes 1. ANSI/AGMA 1012 G05 , Gear Nomenclature, Definition of Terms… …   Wikipedia

• Base circle — In mechanical engineering, base circle of an involute gear is the circle from which involute tooth profiles are derived.1 Notes 1. ANSI/AGMA 1012 G05 , Gear Nomenclature, Definition of Terms with Symbols …   Wikipedia

• base circle — noun Etymology: base (I) : the circle of an involute gear wheel from which the involute forming the outline of the tooth face is generated …   Useful english dictionary

• Standard 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 …   Wikipedia