ME September 2013

Measurement & Inspection

QAF is a perfect body for interior/exterior trim parts. These parts include door moldings, glass, fascia, or in- strument panels. Chrylser creates the perfect body with monolithic CNC machined parts, in lieu of body stampings, fitted over a precision armature. Together, they provide a geometrically ‘perfect’ body shell. Chrysler Group engineers place fully marked up and measured interior or exterior parts submitted by suppliers on this perfect body to see how they fit. It is in a sense a step back to the pre-CAD days of pack- age bucks used for interference checks, but with far more precision—and with more purpose. A laser tracker outfitted with a T-handle provides the metrology measurements, a tool that did not exist in those days. “Now, we can fully understand the supplier parts,” Cole

said. “We then understand how those parts progress through assembly and the deviations that may or may not occur during the assembly process. It gives us a really quick and easy way to identify issues before they get to the floor.”

Chrysler enhances the standard automotive PPAP/PSW parts with its own Part Qualification Process that operates in a continuous loop throughout the life of the program. Think of it as dimensional system engineering.

With this detailed process—rather than simply examin- ing parts in isolation—Chrysler can identify whether a quality issue is due to a part, the assembly or manufacturing process, or an issue that may require a CAD design change.

Helping manufacturers produce results. A Right-From-The-Start™ ERP success story.

“The busier we got, the more we needed a powerful ERP system up and running. Out here, there’s no time for down time.” Andy Bubulka,

Manufacturing Plant Manager H-J Enterprises, St. Louis, MO

“That’s why we went with Global Shop Solutions. They were in, they were out, and we were seeing major new efficiencies—right from the start. What a tremendous difference their ERP system, and their people, made in accelerating our workflow, lowering overall costs, and setting the stage for unconstrained growth. Very powerful. Only regret is that we didn’t go with them years ago.”

For a FREE copy of “Get ERP Right The First Time™” call 1-800-364-5958 or visit www.GlobalShopSolutions.com.

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Designed to Streamline™ GSS-Mfg_Eng_ad-bw_Sep13 Sept. 30 – Oct. 3, 2013 ©2013, Global Shop Solutions, Inc. See us at WESTEC Booth #1706 76 ManufacturingEngineeringMedia.com | September 2013 8/1/13

Controlling Tooling that Controls Quality The laboratory setting provided by the Metrology Centers means isolating key parameters for deeper understand- ing of issues. “For example, we have weld guns and welding robots, and other robotic automated processes out on the floor that could directly influence the quality level of the part,” Cole said. “There are 900 robots on the shop floor, interacting with 284 [critical] body parts for the 2014 Jeep Cherokee.” If dimen- sionally correct parts are assembling well onto the QAF or the Meisterbock, by process of elimination, any issues must be coming from the shop floor. While individual point measurements from CMMs are useful, they are still lim- ited in range, even when 8000–10,000 points are measured on all the parts. This is where area scanning such as from “white light” scanners comes in handy, as demonstrated by Randy Wall, Chrysler Group’s dimensional validation manager. By scanning millions of points on individual stampings, and then scan-

Photo courtesy Chrysler

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