In today's competitive world shorter product life cycles, customers rapid demands and quickly changing business environment is putting lot of pressures on manufacturers for quicker response and shorter cycle times. Now the manufacturers put pressures on their suppliers. One way to ensure quick turnaround is by holding inventory, but inventory costs can easily become prohibitive. A wiser approach is to make your production agile, able to adapt to changing customer demands. This can only be done by JUST IN TIME (JIT) philosophy. Taiichi Ohno, a former shop manager and eventually vice president of Toyota Motor Company, is the individual credited most for the with the development of just-in-time. It is a term used to describe the Toyota production system, is widely recognized today as the one of the most efficient manufacturing system in the world. In simple words we can explain JIT only required necessary units be provided in necessary quantities at necessary times. Producing one unit extra is as bad is being one unit short. Completing one day early is as bad as finishing one day late. Items are supplied "just-in-time". Ohno describes the development of JIT as
*By actually trying, various problems become known. As much problems become gradually clear, they taught me the direction of the next move. I think that we can only understand how all of these pieces fit together in hindsight.
The concept is very simple, if you produce only what you need when you need it, then there is no room of error. JIT has truly changed the face of manufacturing and transformed the global economy. JIT is both a philosophy and collection of management methods and techniques used to eliminate waste (particularly inventory). In JIT workers are multifunctional and are required to perform different tasks. Machines are also multifunction and are arranged in small U-shaped work cells that enable parts to processed in a continuous flow through the cell. Workers produce pars one at a time...
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