Wednesday, February 19, 2014

QCO (Quick Changeover)

QCO can be termed as rapid & efficient way of converting a process from running the current product to running the next product. An organized process continuously reduces the setup time. QCO stands for Quick change over.
The time from the last good part till the first good part is produced after the changeover called as QCO time.
QCO can divide in to two sections.
1.      Internal Setup: Activities that must be performed while the machine is shut down or idle

2.      External Setup: Activities that can be performed while the machine is running or producing
Most important activity is converting internal activities in to external activities.

Where does the term QCO came from?

Land cost in Japan were very high, therefore it was not feasible to store large inventories of vehicles.
Therefore, they were searching for a solution and because of that QCO process started by Toyota vehicle manufacturer.   

Who invented QCO Process?

Developed by Shigeo Shingo
(In the late 1950’s & early 1960’s chief engineer of Toyota)
Born in 1909 & passed away on 1990
External consultant for TOYOTA since 1950’s
Famous with the POKA YOKE & SMED

How does QCO relate to other lean tools and concepts?


It really compliments anything in TPS (Lean Manufacturing). In fact we sort of cringe at the notion of calling it a tool. Waiting is one of the wastes out of seven wastes and mainly we can reduce that by using QCO. 
Figure 01: Practical Example for QCO

2 comments:

  1. do u hv any presentation slides to shear about this topic ?

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