The use of electrical discharge machining, or EDM, is spreading as manufacturers need more precisely cut workpieces, often made from tough to machine materials.
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To remain competitive in the fiercely contested North American automotive industry, the New United Motor Manufacturing Inc. (NUMMI, Fremont, CA) assembly plant, a joint venture between Toyota Motor Corp. (Aichi Prefecture, Japan) and General Motors Corp. (Detroit), has rededicated its efforts in lean manufacturing during the past few years by applying key tenets of the Toyota Production System (TPS).
If you have never heard the term Yokoten, prepare yourself. It has been added to the Lean Operations lexicon as an important activity. Yokoten is being used by lean firms to help them become leaner. Yokoten is a Japanese term that can be roughly translated as “across everywhere.”
Even though it’s been around since the 1950s, when engineering-grade resins were first introduced, many manufacturers still are not familiar with the many benefits that metal-to-plastic conversion provides.
Automotive supplier Faurecia (Nanterre, France) decided it needed to get serious about Industry 4.0 fast.
I traveled to Toyota headquarters in Japan with Jeff Liker for a research project. We wanted to learn more about the engineering and collaboration that created the Toyota New Global Architecture (TNGA), the strategy and innovation behind hydrogen vehicles, and how they had adapted and improved their development system to meet the increasing demands of the ultra-competitive global auto industry.
The industrial world is continuing its adoption of Geometric Dimensioning and Tolerancing (GD&T), the advanced tolerancing methodology. The symbolic language is intended to be both more precise while providing more latitude in allowable variations, replacing the simpler method of adding tolerances to each dimension.
Sales of cars and light trucks plummeted during the Great Recession and General Motors Co. and Chrysler emerged from government-back bankruptcies in 2009. Since then, total industry deliveries have surged, hitting a record 17.47 million in 2015, according to Autodata Corp.
“Five years ago, our fit and finish was below average,” said Dr. Raj Kawlra, director of dimensional strategy and management of Chrysler Group (Auburn Hills, MI). “To be the future world-leaders, we knew that we had to focus on all aspects of quality … vehicles that look good, feel good, sound good, and are reliable.”
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.