flexible manufacturing system
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11-03-2010, 11:36 AM

give me a fulll report of ppt.
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27-09-2010, 03:10 PM

please go through the following thread for more details on 'flexible manufacturing system'

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09-05-2013, 12:57 PM

Flexible manufacturing system

.pptx   Flexible manufacturing.pptx (Size: 99.13 KB / Downloads: 16)


A flexible manufacturing system (FMS) is a manufacturing system in which there is some amount of flexibility that allows the system to react in the case of changes, whether predicted or unpredicted. This flexibility is generally considered to fall into two categories, which both contain numerous subcategories.
The first category, machine flexibility, covers the system's ability to be changed to produce new product types, and ability to change the order of operations executed on a part. The second category is called routing flexibility, which consists of the ability to use multiple machines to perform the same operation on a part, as well as the system's ability to absorb large-scale changes, such as in volume, capacity, or capability.


Flexibility in manufacturing means the ability to deal with slightly or greatly mixed parts, to allow variation in parts assembly and variations in process sequence, change the production volume and change the design of certain product being manufactured.
Flexibility is one of the benefits of small-batch manufacturing. While a small-batch shop may produce lower unit output than a shop dedicated to one or two lines, its strength is that it can make a variety of different products in small volumes.
The complexity of coordinating manual small-batch production had, until the early 1980s, confined automation of the manufacturing system as a whole to industries producing in large-batches, with a small, slowly-changing range of products. Small-batch production relied on stand-alone processing machines, which were coordinated by human operators and schedulers.
The complex nature of producing a wide-range of products brought what were seen as necessary evils accommodated in the name of flexible manufacturing. If a company was machining earthmover axle components or valve housings in small batches then high inventory, 

Traditional FMS

A flexible manufacturing system (FMS) is an arrangement of machines.... interconnected by a transport system. The transporter carries work to the machines on pallets or other interface units so that work-machine registration is accurate, rapid and automatic. A central computer controls both machines and transport system... National Bureau of Standards(2)The key idea in FMS is that the co-ordination of the flow of work is carried out by a central control computer. This computer performs functions such as: Scheduling jobs onto the machine tools Downloading part-programs (giving detailed instructions on how to produce a part) to the machines. Sending instructions to the automated vehicle system for transportation

A Flexible Manufacturing System

Products to be produced are manually loaded onto pallets at a load station, and the computer system takes over, moving the product to the various processing stations using automatic vehicles, which may be rail-guided, guided by wires embedded in the floor or free-roving. After having visited all necessary stations, usually only two or three, the job is taken back to the load station, where it is removed from the pallet and passed to the next process.
Writing FMS control software is not a trivial matter. The software is often custom-written, and is not straightforward programming task. There are complex, real-time interactions with remote hardware which require great expertise and experience on the part of the programmer, particularly for larger systems. In order to simplify this problem, many systems use a hierarchical approach to real-time control. Each computer controls a team of underlings, collecting status reports and issuing commands. Commands flow down the hierarchy, while status reports flow up.

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