|
|
This is only a preview of the paper
Click here to register and get the full text.
Existing members click here to login
|
|
|
Just-in-time (JIT) is easy to grasp conceptually, everything happens just-in-time. For example consider my journey to work this morning, I could have left my house, just-in-time to catch a bus to the train station, just-in-time to catch the train, just-in-time to arrive at my office, just-in-time to pick up my lecture notes, just-in-time to walk into this lecture theatre to start the lecture. ...
So too in a manufacturing operation component parts could conceptually arrive just-in-time to be picked up by a worker and used. So we would at a stroke eliminate any inventory of parts, they would simply arrive just-in-time! Similarly we could produce finished goods just-in-time to be handed to a customer who wants them. ... At that time one American worker produced approximately nine times as much as a Japanese worker. ... In his system waste was eliminated by:
just-in-time - items only move through the production system as and when they are needed
autonomation - (spelt correctly in case you have never met the word before) - automating the production system so as to include inspection - human attention only being needed when a defect is automatically detected whereupon the system will stop and not proceed until the problem has been solved
In this system inventory (stock) is regarded as an unnecessary waste as too is having to deal with defects.
Ohno regarded waste as a general term including time and resources as well as materials. He identified a number of sources of waste that he felt should be eliminated:
overproduction - waste from producing more than is needed
time spent waiting - waste such as that associated with a worker being idle whilst waiting for another worker to pass him an item he needs (e. ... such as may occur in a sequential line production process)
transportation/movement - waste such as that associated with transporting/moving items around a factory
processing time - waste such as that associated with spending more time than is necessary processing an item on a machine
inventory - waste associated with keeping stocks
defects - waste associated with defective items
At the time car prices in the USA where typically set using selling price = cost plus profit mark-up.
Approximate Word count = 1764
Approximate Pages = 7.1
(250 words per page double spaced)
|
|
|
|
|
|