One Spindle, Two Spindles, Three Spindles, More?
That's because these machines feature a "true" milling spindle on an articulating head (B-axis) for full five-axis capability. As Raphael Engel, applications engineering manager for Index Corp., Noblesville, Ind., put it, the gearing and holders required to drive multiple tools in a turret result in lower speeds and less torque than comparably compact motor spindles.
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