make current conditions a little bit better. JIT improvements
begin in the mind, expand to every corner of the factory, and
take root to radically change the factory. They do not simply
make the current situation a little better. Each JIT improvement
is an innovation, a revolutionary advancement that introduces
a whole new concept and methodology. It is probably
more correct to describe the activity of JIT improvements as
“revolutionizing the factory” rather than merely improving it.
Likewise, a JIT awareness revolution does not just improve
our ideas about manufacturing systems—it introduces revolutionary,
boldly innovative ideas.
Lesson 1. JIT Means Innovation
“Just-In-Time”
To put it briefly, Just-In-Time means manufacturing and procuring
“just what is needed, just when it is needed, and just in the
amount needed.” The Just-In-Time concept must be applied
not only to manufacturing, but to all other aspects of the business,
including subcontracting, procurement, and distribution.
As mentioned earlier, Just-In-Time tends to be interpreted
as meaning “in time,” which is quite wrong.
The “In Time” concept is already fairly well observed in
factories everywhere. After all, a factory cannot function
unless its buyers and subcontractors deliver their goods in
time for them to be used in the factory. Similarly, a downstream
process cannot operate on workpieces until the workpieces
have been finished at the previous upstream process.
Outside vendors and subcontractors all have deadlines
for the products they deliver to specific processes in the
client factory. These deadlines are extended down the line
as a delivery deadline for product shipment to sales firms,
and then as the sales firms’ delivery deadline for shipment
to customers.
If we think of Just-In-Time as simply beating the delivery
deadline, we understand very little of what JIT is all about.
make current conditions a little bit better. JIT improvementsbegin in the mind, expand to every corner of the factory, andtake root to radically change the factory. They do not simplymake the current situation a little better. Each JIT improvementis an innovation, a revolutionary advancement that introducesa whole new concept and methodology. It is probablymore correct to describe the activity of JIT improvements as“revolutionizing the factory” rather than merely improving it.Likewise, a JIT awareness revolution does not just improveour ideas about manufacturing systems—it introduces revolutionary,boldly innovative ideas.Lesson 1. JIT Means Innovation“Just-In-Time”To put it briefly, Just-In-Time means manufacturing and procuring“just what is needed, just when it is needed, and just in theamount needed.” The Just-In-Time concept must be appliednot only to manufacturing, but to all other aspects of the business,including subcontracting, procurement, and distribution.As mentioned earlier, Just-In-Time tends to be interpretedas meaning “in time,” which is quite wrong.The “In Time” concept is already fairly well observed infactories everywhere. After all, a factory cannot functionunless its buyers and subcontractors deliver their goods intime for them to be used in the factory. Similarly, a downstreamprocess cannot operate on workpieces until the workpieceshave been finished at the previous upstream process.Outside vendors and subcontractors all have deadlinesfor the products they deliver to specific processes in theclient factory. These deadlines are extended down the lineas a delivery deadline for product shipment to sales firms,and then as the sales firms’ delivery deadline for shipmentto customers.If we think of Just-In-Time as simply beating the deliverydeadline, we understand very little of what JIT is all about.
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