Rotary indexing dials are ideal for automated assembly of small products with a few parts. However, if the product has more than eight components, a rotary indexing dial can become unwieldy. There’s simply not enough real estate around the dial for all the stations.

Fortunately, assemblers can get the speed, precision and durability of a rotary dial in linear form: a precision-link indexing conveyor. The conveyor consists of precision-machined plates, or pallets, linked together in a chain like tank treads. The chain rides in tracks between two large sprockets. Roller bearings enable the plates to move smoothly along the tracks and to pivot as they move around the sprockets. Part fixtures are mounted directly to the plates.

The conveyor can be built in over-under or carousel configurations. In the former, the plates are parallel with the floor; in the latter, they’re perpendicular. An over-under configuration is more suited to processes, like pressing or screwdriving, that may put a little more force onto the conveyor. On the other hand, with a carousel conveyor, assembly stations can be positioned along both sides of the machine.

One of the newest precision-link indexing conveyor is the chain pallet conveyor (CPC) from Gate Technologies Inc., which features a pre-loaded industrial chain to move the individual pallets. It has a modular design, which minimizes delivery time and increases design flexibility.

The CPC’s main body structure is made from special cast aluminum profiles designed specifically to allow fast and easy connection of fixtures and components by way of T slots. The aluminum alloy pallets are anodized and glide between low-friction precision guideways made from a self-lubricating bearing surface material.

The CPC can be controlled using different drive packages, depending on the application requirements. It can be servo-driven for the best programming flexibility, but it can also be powered by an indexer driven by a globoidal cam for the highest positioning accuracy and simplest drive and controls setup. These different drive options meet the most common requirements for industrial automation. The conveyor can operate in any working position, both vertical or horizontal.

The CPC is designed for lighter duty indexing and transfer applications, requiring a “medium level” of accuracy for part positioning. It is ideal for processes such as filling, inspection of parts, assembly and testing.

The conveyors can be configured into different shapes, such as square and rectangular, upon request. Maximum cycle rates is 70 indexes per minute. Indexing length ranges from 76.2 to 457.2 millimeters.

For more information on indexers, click https://cdsindexers.com or visit the company’s booth at The ASSEMBLY Show South, which will be held April 16-17, 2025, at the Music City Center in Nashville, TN.

Gate Technologies is one of several suppliers of motion control technology exhibiting at the event. Others include Renishaw Inc., THK America and Weiss North America.

Besides motion control technology, you’ll find some 150 suppliers of adhesives, assembly machines, fastening tools, robotics, parts feeders, presses, test and inspection devices, and other technologies. The show is being held in conjunction with The Quality Show South and Adhesives in Action. For more information, visit www.assemblyshowsouth.com.