03-04-2010, 06:12 PM
INTRODUCTION
The implementation of Just In Time Manufacturing 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
IT 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.
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.
