spur gear Flashcards
What is the diameter of the pitch surface of the gear called?
Pitch Diameter
The pitch diameter is a crucial measurement in gear design as it influences the gear’s performance.
What is the intersection of the pitch circle and the line passing through the centers of the gear known as?
Pitch Point
The pitch point is important for defining how gears mesh together.
The radial distance from the pitch circle to the outer end of the tooth is called _______.
Addendum
What is the distance between the tip of a tooth of one gear and the root circle of the other called?
Clearance
Clearance is vital to prevent interference between meshing gears.
What term describes the distance from the pitch circle to the bottom of the tooth space?
Dedendum
The dedendum is essential for determining the depth of the gear tooth.
sum of addendum and dedendum
Whole Depth
the difference between the whole depth and the clearance
Working Depth
minimum distance between the non-driving surface of a tooth of the driver gear and the adjacent surface of the mating tooth on the driven gear
Backlash
surface of the tooth between the pitch and the addendum circles.
Face of Tooth
width of the gear measured on the pitch circle parallěl to the axis of rotation
Face Width
surface of tooth between pitch and root circle
Tooth Flank
surface of the top of the tooth between the faces of the same tooth
Top Land
surface of the gear between the flanks of adjacent teeth.
Bottom Land
curved surface of the tooth flank adjacent to the bottom land
Fillet
the angle between the line tangent to the tooth surface and a radial line both intersecting at the pitch circle.
Pressure Angle
two mating gears with the larqer gear called gear and the smaller gear called pinion.
Gear and Pinion
A gear with infinite radius. Straight gear
Rack
the angle turned through by the gear where while one tooth is in contact with the mating tooth on the other gear.
Angel of Action
theCorresponding to the angle of action taken in the pitch circle
Arc of action
average number of teeth in contact. Equal to arc of action divided by circular pitch
Contact Ratio
that portion of the angle of action Corresponding to the period from the instant the teeth cõme in contact until they are in contact at the pitch point.
Angle of approach
the remaining portion of the angle of action corresponding to the period from the instant the teeth are in Contact at the pitch point until the contact leases
Angle of Recess
imaginary surfaces on both driving and driven gears which are considered as rolling fogether without slipping.
Pitch Surfacr
the line that generates the tooth surface.
tooth element
