| Just
In Time Manufacturing |
INTRODUCTION JIT
is a management philosophy that strives to eliminate sources of manufacturing
waste by producing the right part in the right place at the right time. The Waste
results from any activity that adds cost without adding value, such as moving
and storing. The idea of producing the necessary units in the necessary quantities
at the necessary time is described by the short term Just-in-time. The
implementation of this management philosophy in industries like the automobile
industry can bring about a see saw change in both quality & quantity since
in a JIT system, underutilized (excess) capacity is used instead of buffer inventories
to hedge against problems that may arise. This seminar gives an over view of the
JUST IN TIME technique by considering the TOYOTA PRODUCTION SYSTEM in detail JUST
IN TIME (JIT) is a management philosophy that strives to eliminate sources
of manufacturing waste by producing the right part in the right place at the right
time. Waste results from any activity, which adds cost without adding value, such
as moving and storing. JIT (also known as stockless production) should improve
profits and return on investment by reducing inventory levels (increasing the
inventory turnover rate), improving product quality, reducing production and delivery
lead times, and reducing other costs (such as those associated with machine setup
and equipment breakdown). The
idea of producing the necessary units in the necessary quantities at the necessary
time is described by the short term Just-in-time. Just-in-time means, for example,
that in the process of assembling the parts to build a car, the necessary kind
of sub-assemblies of the preceding processes should arrive at the product line
at the time needed in the necessary quantities. If Just-in-time is realized in
the entire firm, then unnecessary inventories in the factory will be completely
eliminated, making stores or warehouses unnecessary. The inventory carrying costs
will be diminished, and the ratio of capital turnover will be increased. The
implementation of this management philosophy in industries like the automobile
industry can bring about a see saw change in both quality & quantity since
in a JIT system, underutilized (excess) capacity is used instead of buffer inventories
to hedge against problems that may arise. JIT applies primarily to repetitive
manufacturing processes in which the same products and components are produced
over and over again. The general idea is to establish flow processes (even when
the facility uses a jobbing or batch process layout) by linking work centers so
that there is an even, balanced flow of materials throughout the entire production
process, similar to that found in an assembly line. To accomplish this, an attempt
is made to reach the goals of driving all queues toward zero and achieving the
ideal lot size of one unit. This
new trend in engineering production, which originally refers to the production
of goods to meet customer demand exactly, in time, quality and quantity, reduces
wastage by nearly 55-75%. "Waste" in this context is taken in its most
general sense and includes time and resources as well as goods. This concept can
really change the phase of industrial production of goods like car & other
important utilities.
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