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February 2006 Vol. 136 No. 2
Multitasking Machining
Done-in-one setup makes parts better
Jim Lorincz, Senior Editor
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Hardened gear wheels (RC 62-65) are rough and finish-turned and finish-ground,
drilled, threaded, and broached on an EMAG VSC 250 DS machine.
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Multifunction machine tools have been around long enough in various configurations for manufacturers to appreciate their potential for cost-saving, quality production of parts from miniature connectors to transmission housings for off-highway equipment. Development of true multitasking machines, however, has removed them from the category of special machines.
Manufacturers have made them one of the fastest growing categories C machine tools because they petitiveness. They offer the flexibility to meet just-in-time delivery of a variety of parts in smaller lot sizes. They consolidate the processes of many machines, improve accuracy, and save time formerly required for multiple setups as work was moved from machine to machine and operation to operation. Finally, they employ resources of people and capital equipment more efficiently, a definite plus that the most astute accountants can appreciate.
The most familiar multitasking machines are NC lathes with live tools in the turret, mill-turns, and Swiss turning centers. NC lathes with a Y axis that allows turrets to move from side to side have full milling or drilling capability. They can mill, drill, and machine off the spindle centerline. A B axis allows rotation around the Y axis for drilling at an angle or contour milling.
sand dollars to over a million dollars. That hardly qualifies th