Non-Coplanar Connecting Rod Grinder

In 2012, C & B Machinery developed three grinding cells that resulted in production advancements for non-coplanar connecting rods (stepped rods), said the company.

The DG-2H-RE model reciprocator, designed for a customer, can simultaneously configure a coplanar connecting rod into a step rod. The DG-2H-RE also has the ability to produce a completely finished part - including the loading, unloading, part rinse and blow off - in 21.8 seconds (165 PPH). The process for this particular company required a crank reduction of 1.715 mm per face and a pin stock removal of 0.3 mm. This same cell can be converted to grind coplanar connecting rod for another engine system.

Another customer's cell was developed for its lower volume non-coplanar connecting rod production process. C & B's swing arm technology provided a pin reduction of 4.9 mm. A rough cut step grind (OP10) was directly followed by a finish grind cycle, which was achieved in a single load. The Flex cell also provided a stock removal of 1.75 for the crank end in a cycle time of 39.6 seconds (66 PPH).

"One of the greatest accomplishments of the year came with a non-coplanar reciprocator grinder designed for another customer," said a company spokesperson. "The crank end stock removal requirement was 2.3 mm per face and pin end reduction 0.3 mm per face. Not only did C & B Machinery provide a reciprocator meeting those specifications, but they did so with a floor to floor cycle time of just 18 seconds (200 PPH). The cycle time includes the loading and unloading process steps."

C & B has also introduced the newest version of its Vertical Micro Finishing Clamp Bore grinding cell.

For more information contact:

C & B Machinery

12001 Globe St.

Livonia, MI 48150

734-462-0600

sales@cbmachinery.com

www.cbmachinery.com