Importance

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Abstract

An automatic pallet changer system in an automatic machining center has a first track for receiving a first pallet having a first workpiece thereon, and a second track for receiving a second pallet having a second workpiece thereon. The first and second tracks are side-by-side and extend from a region outside the enclosure to a region inside the enclosure adjacent the receiver. A linear drive unit is arranged between the first and second tracks and has a carriage which moves along a longitudinally extending carriage guide. The carriage has a member for engaging with the first or second pallet depending upon whether the linear drive unit is rocked to the left or to the right. A motor is connected to the linear drive unit for causing a movement of the carriage along the carriage guide. A rocker unit is connected to the linear drive unit for rocking the linear carriage unit to the left or to the right. A programmable logic control automatically controls overall operation of the system including the linear drive unit and detecting positions of the first or second pallet either within the machining enclosure or at the end of the linear drive unit adjacent the rocker unit.

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First Claim