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Grinding Roots

Until the middle of 2010, first-tier subcontract machinist, JJ Churchill, could produce turbine blades only if they had their fir-tree root-forms preground elsewhere, or if they were subsequently added by another subcontractor. No longer is this the case.

The Wide World of Deburring and Refinishing

Burrs, sharp edges, and rough surfaces plague even the most precise metal-cutting or forming process. Deburring and finishing can often be treated as the step-child of a manufacturing process, but its importance is growing as tolerances get tighter and precision devices become the norm.

Aggressive Machining Requires New Approach to Toolholding

Today, the productivity needed to be globally competitive requires ever increasing metal-removal rates during operations such as roughing and high-speed slotting. Process reliability is paramount, especially when working with difficult-to-machine materials.

Geometry Lesson Teaches Corvette How to Lighten Up

It’s been almost two decades since the C5 Corvette hit the streets with its groundbreaking chassis built around hydroformed steel bumper-to-bumper frame rails. The technology gave engineers a chance to create components that were both lighter and stiffer than traditional stamped and welded assemblies.

Why Ultrasonic Additive Manufacturing Makes Sense for Aerospace & Defense

Additive manufacturing lets companies think “outside the box.” Engineers can now start to look at a part without restrictions on size, shape or material. Instead of taking 15 different CNC milled parts and brazing them together, these companies have reimagined the part entirely—to be built as one part.

Kennametal Names Christopher Rossi CEO

Kennametal Inc. (Pittsburgh) announced June 29 that its board of directors has appointed Christopher (Chris) Rossi as president and CEO and has named him a director. Rossi succeeds Ron De Feo, whom the board has appointed executive chairman. Both appointments are effective August 1.

Process Holds Keys to Efficient Titanium Machining

Demand for machining titanium for aerospace applications won’t abate any time soon. It is driving OEMs and the supply chain in the commercial airplane market to find ways to dramatically increase machining output. Whatever date you pick from now until 2030, there’s a sufficient backlog of commercial airliners for both structural and jet engine applications to keep spindles humming around the clock cutting titanium.

Hard Hips

The challenge of machining hip replacement implants out of cobalt chrome

Precision Honing Powers Champion Racing Teams

In auto racing, small details have a major impact on success—a concept very familiar to performance racing parts provider Oliver Racing Parts (Charlevoix, MI). Oliver produces performance connecting rods for the world’s leading engine builders.