Patent ID: 6302261
Filing Date: 2001-10-16
Classification: B23Q,B65G

Abstract:
An indexing apparatus for sequentially advancing a workpiece so that a series of work steps can be performed on the workpiece, the apparatus comprising:a plurality of workstations arranged in spaced relationship along a linear path such that at least one of the work steps can be performed on the workpiece at each workstation;at least one pallet having a support surface for supporting the workpiece as the pallet passes through the workstations;a movable drive assembly for advancing the pallet along the linear path to thereby sequentially move the pallet into proximity with each workstation; anda detent safety coupling assembly releasably coupling the drive assembly and the pallet such that movement of the drive assembly causes corresponding movement of the pallet when the forces acting on the coupling assembly do not exceed a predetermined value and such that the coupling assembly ceases to couple the drive assembly and the pallet, without breakage of the coupling assembly, when the forces acting on the coupling assembly exceed a predetermined value, the coupling assembly comprising a drag-link pin assembly with a drag-link pin movably attached to the drive assembly and a detent engagement assembly affixed to the pallet, the engagement assembly releasably engaging the drag-link pin.