A chaku-chaku line has a series of machines, each equipped with a hanedashi device, or autoejector. This enables the operatorworking a chaku-chaku line to
walk up and immediately insert the part he is holding into a machine
press a start button, and then
pick up the previously ejected part.
Because the chaku-chaku operator is running several machines, she relies on jidoka(autonomation). If there is a problem on a machine while the operator is away, jidoka stops production, preventing further defects or damage to the machine.
Chaku-chaku is a Japanese Lean term that translates to load-load. This is in reference to process the operator follows-loading machine after machine in a chaku-chaku line with no need to unload.
Because of the rapid nature of the chaku-chaku cell, it will often be comprised of a number of single-function, right-sized machines.