Feature Article

X-ray scanning a part with internal features is useful because it creates 2-D images of those features in a nondestructive manner. Industrial computed-tomography, or industrial CT scanning, which is based on X-ray scanning technology, takes it a step further by providing a complete 3-D view for internal and external analysis.

Imagine a gear milling method where the toolpath -- not the tool shape -- determines gear characteristics such as diametral pitch or pressure angle. A new concept, involute milling, provides that functionality while delivering machining efficiency and production versatility. The result is a "democratization" of gear milling, moving the process from single-purpose, dedicated machine tools to multipurpose machines that can produce small batches economically because no costly hobs or gashers are needed.

The heart of rail technology beats in Germany, where the Bombardier Transportation division of the Canadian conglomerate is headquartered in Berlin. Its plant in Netphen, Germany, annually produces 2,500 to 3,000 carriage bodies and bogies (a chassis or framework with wheels that is attached to a railway vehicle). This equipment is used in vehicles ranging from trams to high-speed trains. Despite the European economic crisis, order volumes have risen over the last few years, to the point where the plant, which has a workforce of 700, is nearly at full capacity.

Turning force calculations help estimate tangential, feed, and radial loads so shops can judge rigidity, horsepower, and chatter risk before dialing in the cut.

Choosing a multitask machine from a bewildering array of options can be challenging, but the right one can be a shop game changer.

AMT's latest Global Forecasting & Manufacturing Conference found reasons for both caution and optimism.

Getting a handle on chip handling for small to medium-sized shops.

Tips and techniques for improving bandsaw blade life and performance.

New developments in superabrasive grinding wheels help eliminate the need for dressing them.

Manufacturing faces more uncertainty than usual in 2013, but the year ahead could be a good one.

The pros and cons of marking parts with laser, micropercussion and scribing technologies.

Holding a few tenths tolerance on a piece of 60-HRC steel was once the domain of expensive grinding equipment. Today, it's no big deal.