High precision positioning powered turntable and control...

Details High precision positioning powered turntable and control... High precision positioning powered turntable and control...

B - Operations, Transporting

23

Q

B23Q 7/02 (2006.01)

Patent

CA 2528892

The invention relates to the field of material handling or logistic equipment, in particular, relates to turntables, which can be used especially for automation of production line, assembly assistance, linefeeading and synchronous manufacturing. A high precision positioning powered turntable and its controlling method are disclosed herewithin, based on slewing ring bearing having an integral gear on the inner ring, and positively driven by a gear motor. A plurality of sensors and sensor flags are installed for monitoring position of the turntable top structure for controlling acceleration, deceleration and stopping. A controller, such as a programmable logic controller, is used for monitoring the position of the turntable top structure through the plurality of sensors, and decides how it operates a motor drive, such as variable frequency drive, of the gearmotor for controlling the acceleration, deceleration and stopping of the turntable.

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