2019 Pittsburgh AISTech

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Electrical Oscillation Drive With Adjustable Stroke and Frequency During Operation (Room 408)

The oscillation stroke is generated by an eccentric shaft. However, instead of the typical 360° rotation, it rotates only partially (<180°). The position of the eccentric is accurately driven and positioned and controlled by the combination of a servo drive and torque motor. The oscillation at the mold with a stroke S is generated by a partial rotational movement of ±α. The stroke and/or frequency can be adjusted independently by the control software at any time during the casting process by simply changing the angle ±α and/or the rotational speed. The control software allows operation with sinusoidal and non-sinusoidal oscillation curves.