What is Indexing?
Indexing is the repetitive movement of a mechanical element, from an initial position (starting from a rest position also known as dwell) to a new position. In other words, it can also be defined as the process of starting and stopping the motion in precise intervals at precise locations. Indexing is applied generally to either linear or rotary applications.
In machine design applications, indexing can take many forms including Ratchet & Pawl, Geneva Mechanism and more. However these mechanisms have their own inherent limitations and hence are not the choice of a good designer or machine builder anymore.
Cam Driven Indexers convert constant rotary motion at the input shaft into intermittent rotary motion at the output shaft.
This motion is achieved by the combination of the Cam, driven generally by a motor and reducer, and a Turret attached to the output shaft which contains the cam followers. The whole assembly is generally enclosed in an oil filled box known as Housing.