Keep in mind that you need a lathe with some sort of gearbox reduction to achieve the necessary torque for serious metal removal on large diameters. This requirement usually goes hand in hand with seriously oversize spindle motors, because high horsepower motors are low on horses when they are not turning near nameplate (rated) rpm for that horsepower. Running the motor through a gearbox gets it running faster again, so it is able to provide more horsepower and boosts the effective torque so it can cut real chips.
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First you get good, then you get fast. Then grouchiness sets in.
(Note: The opinions expressed in this post are my own and are not necessarily those of CNCzone and its management) |