Andon Tower
A three-tier stack light escalates one tier per beat as a station call is raised and answered, returning to the running tier at the top of every cycle.
A three-tier stack light escalates one tier per beat as a station call is raised and answered, returning to the running tier at the top of every cycle.
An upper body comes down the guides as the lift raises the lower one, the locating pins find their holes, and the two halves close into a single assembly.
Opposed clamp jaws hold a part on the datum while the station works it, then release so the finished part can clear and the next one locate.
A six-fixture rotary table indexes one station per beat and dwells under the spindle, carrying the tracked pallet round to the tool mark once per cycle.
A keyed part is offered to its fixture one lane off the datum, stops dead on the fixture face, then moves across and drops home into the keyway.
A finished kit ships out of a six-compartment tray and the empty tray fills again one compartment at a time.
Parts advance one station pitch along the rail until the andon cord overhead is pulled down to the line, holding everything still until it is released.
Stock bars in an eight-bin pick face drop to the reorder floor one bin at a time as the pick pass works across the wall, each replenishing before the next is taken.
A bank of check pins drops onto the part one hole at a time to confirm every fastener is present, lifting clear before the next pin falls.
Five station columns of stacked work elements stand against a dashed takt rule while one element walks the line, sitting on top of each station in turn and crossing the rule at the two that are overloaded.
Work piles into the buffer between two stations while the upstream beat outruns the downstream one, and the level drains again as the line catches up.
A part is carried across the boundary between two stations, the first grip opening as it leaves and the second closing as it arrives, then released downstream as the next enters.
A drum arm sweeps one revolution per takt interval past eight station notches, releasing a part down the chute each time it returns to the mark.
A torque trace climbs the gauge arc into the limit window, lights the setpoint tick as the spindle clicks, and bleeds back to zero for the next joint.
One piece walks the six machines of a U-shaped cell, dwelling at each station in turn and returning across the mouth of the U to start the next.