| CPC B23B 45/008 (2013.01) [B25H 1/0071 (2013.01); B23B 2260/062 (2013.01); B23B 2260/10 (2013.01); Y10T 408/554 (2015.01)] | 13 Claims |
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1. A drilling machine, the drilling machine comprising:
a magnetic base to detachably secure the drilling machine to a surface;
a drive motor arranged in a housing and having a rotor shaft with a rotor shaft longitudinal axis that is connected in a power-transmitting manner via a gear mechanism to a tool spindle with a spindle longitudinal axis; and
a tool holder connected to the tool spindle to receive a drilling tool,
wherein the spindle longitudinal axis is aligned substantially parallel to the rotor shaft longitudinal axis,
wherein the tool spindle is axially adjusted along the spindle longitudinal axis relative to the drive motor and the magnetic base,
wherein the drive motor is an electrically commutated drive motor,
wherein the gear mechanism includes a first gear stage, a second gear stage and a third gear stage,
wherein the first, second and third gear stages are arranged in a row arrangement one above the other in an axial direction with respect to the rotor shaft longitudinal axis, the rotor shaft longitudinal axis establishes a vertical upward direction and an opposite vertical downward direction such that the second gear stage is arranged vertically above the first gear stage and the third gear stage is arranged vertically above the second gear stage,
wherein, with respect to the vertical upward direction, the second gear stage is arranged vertically above the first near stage and the third pear stage is arranged vertically above the second gear stage, such that an uppermost surface of the first gear stage is positioned below a lowermost surface of the second pear stage and an uppermost surface of the second gear stage is positioned below a lowermost surface of the third gear stage,
wherein the lowermost surface of the third gear stage is vertically above the motor, and each of the rotor shaft, the uppermost surface of the first gear stage and the magnetic base is vertically below the motor,
wherein, in a radial direction with respect to the rotor shaft longitudinal axis, the first gear stage is positioned closer to the rotor shaft longitudinal axis than each of the second gear stage and the third gear stage, and the second gear stage is positioned closer to the rotor shaft longitudinal axis than the third gear stage,
wherein a height of the drilling machine is 200 mm or less, and
wherein a length of the drilling machine is 400 mm or less.
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