Controller for the electric motor of a high-speed spindle...

Details Controller for the electric motor of a high-speed spindle... Controller for the electric motor of a high-speed spindle...

2005-04-05

2005-04-05

Wellington, A. L. (Department: 3722)

Gear cutting, milling, or planing

Milling

Process

C409S183000, C409S197000, C409S210000, C408S006000, C408S009000, C700S174000

Reexamination Certificate

active

06874980

ABSTRACT:
An improved electronic controller for the motor of a high-speed spindle attachment used in conjunction with a cnc milling machine. The controller comprises preventative circuitry that protects the spindle assembly of the attachment from overload accruing as a result of relatively moderate increases in torque demand during use. The controller senses the power level being used by the motor while it causes high-speed spindle rotation, and when it identifies a power consumption rate by the spindle that exceeds the operator pre-set maximum level determined to be safe for avoiding catastrophic spindle damage, the electronic controller sends a signal back to the computer controlling the axes of the cnc milling machine that is sufficient to slow, pause, and/or stop the feed-rate.

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