The NUM Flexium CNC was selected and provides eight motion axes control, plus another three on an associated robotic loader. The motors of all 11 axes are driven by NUM- Drive C servodrives, and the overall system is equipped with two NUM MDLL 3050 regulated power supplies. Each power supply is rated at 50-kW continuous and uses regenerative braking to maximize effi ciency. The main machining axes are operated by direct-drive motors, while the honing wheel and workpiece axes are driven by high-torque motors synchro- nized and controlled by NUM application-specifi c software. Every stage of the honing process on the Grono 250 is
automated. In normal use, the case-hardened workpiece is re- moved from the production line conveyor by a robotic handler/ clamp unit which identifi es the type of gear by checking its outside diameter before transferring it to an integral pre-process measurement station. The workpiece is synchronized with a secondary gear, then driven into mesh and rotated through a complete revolution. During this time, the displacement be- tween the two axes is measured continuously to ascertain how
Big Results Small Hole EDM...
As part of our extensive line of SY Series Drills the SY-1210TGU has X, Y, and W travels of 39.3” x 47.2” x 39.3” and 39.3” of open height with an automatic electrode and guide changer. This machine also features an integrated tilting drill head with +/- 100 degrees of rotation, which makes this the perfect drill for aerospace, power generation, and production applications.
“Everything for EDM”
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The MS16C is designed to provide a stable platform in a compact footprint for high-precision work from bar to 16 mm to produce parts like these.
much stock material needs to be removed from the workpiece, and these data are fed to the NUM Flexium CNC. After measurement, a robotic handler transfers the work-
piece to the honing stage, where it is initially indexed before being run up to speed and synchronized with the abrasive- toothed honing wheel. The honing wheel is then driven progres- sively into mesh with the workpiece. The two axes operate in a unique master-slave confi guration that has zero delay of the slave which required NUM to create a second master for the workpiece motor. Controlling the speeds of both these axes precisely and fractionally--varying one relative to the other—fa- cilitates fi ne adjustment of the honing process. As soon as the honing process is complete, the workpiece is disengaged from the honing wheel, spun to remove coolant, and then transferred back to the production line by the robotic handler. Grono 250 machines are capable of spindle speeds of 7000 rpm. A 10,000-rpm spindle speed is being developed for even tighter process control. The Grono 250 was intro- duced at IMTS. Sicmat is represented in the US and Canada by Star SU LLC (Hoffman Estates, IL). ME For more information on NUM Corp., go to www.num.com, or phone 630-505-7722; on Star SU LLC/Sicmat, go to www.star-su.com, or phone 847-649-1450.
Compact CNC Multispindle Debut
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he new six-spindle CNC automatic production lathe, the MS16C from Index Corp. (Noblesville, IN), is built on a multispindle modular system. Aimed at the cam-drive seg-