What is Dedendum circle?

: the circle touching the bottom of the spaces between the teeth of a gear wheel.

What is Dedendum mean?

: the root of a gear tooth also : the distance between the dedendum circle and pitch circle of a gear wheel or rack — compare addendum.

What is the Dedendum of a gear?

Dedendum is the depth of the tooth below the pitch circle. Circular Tooth Thickness is the distance from a point on one side of a gear tooth to a corresponding point on the opposite side of the same tooth, measured along the pitch circle.

What is Dedendum in mechanical engineering?

1. ( Mechanical Engineering) a toothed wheel that engages with another toothed wheel or with a rack in order to change the speed or direction of transmitted motion.

What does circular thickness and dedendum stand for?

Circular thickness : The thickness of the tooth at the pitch circle. Clearance : The space between one gears minor diameter and the mating gears major diameter. Dedendum : Depth of the tooth between the pitch circle and the minor diameter.

What is the plural meaning of the word dedendum?

plural -s. : the root of a gear tooth; also : the distance between the dedendum circle and pitch circle of a gear wheel or rack — compare addendum.

What are the physical characteristics of a dedendum?

Characteristics The dedendum is covered by a large number of small pits and has a matt appearance. Both gears are equally affected and with continued running the dedenda are worn away and a step is formed at the pitch line to a depth of perhaps 0.5 mm. The metal may be detached as pit particles or as thin flakes.

How to draw the profile of a dedendum?

With care, the profile can now be traced onto the required layout, lining up the base circle and ensuring that the profile of the tooth flank passes through the tooth widths previously marked out on the pitch circle. The flanks of each tooth will be traced from either side of the drawing paper. Finish off each tooth by adding the root radius.