| 摘要 |
A drill press includes a housing and a motor assembly, with a motor carriage attached to the housing. The motor assembly includes an electric motor and drill bit, and the motor carriage is operable for moving the motor assembly relative to the housing. A base, coupled to a portion of the housing, is operable for magnetically coupling the tool to a workpiece. The drill press also includes a DC power source and an AC power input for providing power to the motor. A power supply switching unit, electrically coupled to DC power source and the AC power input, selectively electrically couples the motor with one of the DC power source and the AC power input for providing power to the motor.
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