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better production Shops Using Technology 142 MMS June 2014 mmsonline.com expands at a rapid feed rate of 220 microns per second at 45 percent of available torque until it reaches a pre-determined bore size close to the desired limit. It then switches to an expansion rate of 200 microns per second at 15 percent of available torque to avoid tool damage. Toward the end of the program cycle, the tool expands at 2 microns per second at about 10 percent of available torque. The system constantly monitors both tool expansion rate and percentage of avail- able torque. The opera- tor can reduce the tool expansion rate for tighter tolerances or increase th e to rq u e fo r f a s te r c y c l e t i m e s . T h i s approach yields high- quality bores in terms of finish, size and cylin- d r i c i t y, th e c o m pa ny says. Parts honed in the Eco 40 consume just 50 percent of the allowable tolerance for size and finish, yielding high Cpk as well as bore round- ness and straightness under 0.0005 mm. Mr. Zupan says the Nagel Eco 40 resolved all of the problems asso- ciated with the single- pass honing/diamond sizing system and has allowed for smaller tool inventories. The pay- back for Micron came immediately from quick a n d r e l i a b l e t o o l changes, improved bore quality and consistent uptime, he says. T he post pro c e s s g aging and automatic size com- pensation feature on the Eco 40 eliminated all s i z e - c o n t r o l - r e l a t e d issues, he says. using a precision grinder at Nagel to ensure that the first part is good to speed tool change. The servo-controlled tool-wear compensation system is designed to further reduce non-cutting time while improving bore quality for the injector housing. Once inser ted in the bore, the tool Nagel Precision, call 734-426-5649 or visit nagelusa.com. Die Grinders & Disc Sanders Dynabrade's Air-Powered .4 hp Die Grinders and Disc Sanders ➤ Designed for peak efficiency and longer life! ➤ Ideal for rapid material removal, deburring, finishing and polishing. ➤ Straight-Line, Right Angle and 7° Offset models. ➤ Models from 3,200 to 30,000 RPM, front and rear exhaust. ➤ No-obligation demonstrations available – call for details! 1-800-828-7333 D Y N A B R A D E . C O M Dynabrade and the Dynabrade logo are registered trademarks of Dynabrade, Inc. 0614_MMS_better.indd 142 5/14/2014 8:50:34 AM