Automotive Design and Production

MAR 2013

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AD&P; > March 2013 > NOTABLE Behind every great tool there���s a great idea The tool: KOMET KUB K2�� Replaceable head drill for very small diameters. The next generation, designated the 996, ran from 1997 to 2005. This had a water-cooled boxer engine; the engine had four valves per cylinder and produced 300 hp. The design was lower and sleeker, with a drag coef���cient of 0.30. The headlights integrated the turn signals, a controversial design cue then, but taken for granted now. The 911 GT2 that became available in 2000 is the ���rst car to have ceramic brakes as standard. The 911 Carrera and 911 Carrera S that appeared in July 2004 were designated the 997 (so the 993 of 1993 was. . . coincidental?). The design features clear oval headlights and separate blinkers. Note how the Porsche designers would change things up to keep things fresh, yet this model also harkens back to early 911 designs. In 2006 the 911 Turbo was introduced; it is said to be the ���rst gasoline-powered production car to have a turbocharger with variable turbine geometry. In 2008 the 911 was equipped with direct fuel injection and a dual-clutch transmission. In 2011 the 991 911 was introduced. Compared to the previous model, it has a longer wheelbase, wider track, and larger tires. It has a steel/aluminum hybrid construction. It has the world���s ���rst seven-gear manual transmission. And even though it is ���atter, lower, yet fully contoured shape, this seventhgeneration design is still quintessentially a 911. The idea: Minimizing machine downtime with a quick-change replaceable head drill. Why it���s great: ��� Quick and easy replacement of the drill head. ��� Patented self-centering and self-clamping connection for accuracy and repeatability. ��� Suited for machining center and lathe applications. Learn more about this and other great ideas. Go to www.komet.com/greatideas or scan this QR code. www.komet.com 800-656-6381 TOOLS PLUS IDEAS 12 Laser Welded This is a gear for a dualclutch transmission. What you can���t see is that this gear has been laser welded with an ELC series machine from EMAG (emag.com). What happens is that components are combined in a joining press, then welded with the solid state laser that has stationary optics. Explains Dr. Andreas Mootz, managing director, EMAG Automation, ���The process allows you to concentrate a carefully dosed amount of energy emitted by the laser beam on the welding point, minimizing possible warping, while still achieving high welding speeds.��� Just as dual-clutch transmissions are designed to improve the fuel ef���ciency of vehicles, the use of the solid-state laser (EMAG offers disk and ���ber types), the energy ef���ciency achieved is on the order of 20%, compared with some 8% for a CO2 laser.

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