Another new concept in versatile, flexible gaging is the Equa-
tor from Renishaw (Hoffman Estates, IL). The odd-looking device pairs a parallel kinematic machine (PKM) with a Renishaw SP25 scanning analog probe. It measures an infinite variety of parts within its 300 × 300 × 150-mm working volume, collecting data at 1000 points/ second. “It is not a CMM and it is not intended to deliver the accuracy of a CMM,” says Dave Emmett CMM/Equa- tor business manager of Renishaw. “It is a flexible gage.” He believes there is a need for both high-speed “hard” or fixture gaging systems as well as the slower, but more accurate, CMMs. There was also an unmet need in a technology gap between the capabilities of those two technologies, according to Emmett.
He believes the Equator is ideal for job shops or manufacturers with part runs in the thousands with a large variety of individual part designs. As Emmett explains it, the Equator has all of the versatility of a CMM without the same level of absolute accuracy. “The Equator is first mastered, usually with a part that has been measured carefully on a CMM, and then subsequent parts are measured in comparison to the master,” he explains.
Repeatability vs. Accuracy Making the Equator repeatable with-
out making it accurate in the absolute sense makes it economical, portable (it weighs 25 kg) and ideal for workcell gaging. The comparison uncertainty, or repeatability, is ±0.002 mm, but to report accuracies in the absolute sense requires periodic remastering during a work day. “The accuracy of the Equator is held, if you will, in the master part,” says Em- mett, just like many hard gages or fixture gages. “It is a comparative technology in a versatile, software driven [device].” Emmett says dozens of Equators have
reached the field since the system’s 2011 introduction, and regular software enhancements are being introduced. Programming is done either on the machine or off-line using Renishaw’s MODUS package. It is also tailor-made to work with
HELLER ISAEROSPACE
For critical production parts in difficult materials, leading global aerospace manufacturers partner with Heller. And for good reason.
I HAVE PROBES ON MY MACHINE; I DON’T NEED A PRESETTER
Misconception #8
The Truth Is: A probe may be an effective way to verify tool lengths betwee but it is not the most efficient way to set your tools. A “guess-and-check” pro making adjustments wastes valuable cutting time. A Speroni MAGIS Tool P can verify runout, measure length, diameter, radius, and other geometrie measuring icons, and it can also inspect tools for wear. Spend less time ad and more time cutting.
HELLER delivers production.
4 and 5 axis machining centers designed for heavy-cutting, high precision, and high performance
Mill-turn technologies Turnkey process solutions
The notch-free nut design of our Mega Micro Chuck prevents vibration a for superior balance and concentricity. It not only eliminates whistling nois splattering, but also assures increased strength of the nut itself. The sup design of the body offers added strength for micro end milling, and reduce in long reach applications.
Reliability and maintainability second to none, long-term local support and engineering, and deep applications experience. It adds up to a very favorable total cost of ownership.
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Learn about more common misconceptions and Truth solutions at www.bigkaiser.com/truth or call 88
9/26/2012 • 9/27/2012
We’ll improve your most demanding applications or we’ll take back our products – G Visit us at booth #W-1600