The capability of producing different parts without major retooling A measure of how fast the company converts its process es from making an old line of products to produce a new product The ability to change a production schedule, to modify a part, or to handle multiple parts Operational The ability to efficiently produce highly customized and unique products Customer The ability to exploit various dimension of speed of delivery Strategic The ability of a company to offer a wide variety of products to its customers Capacity The ability to rapidly increase or decrease production levels or to shift capacity quickly from one product or service to another So, what is flexibility in manufacturing? While variations abound in what specifically constitutes flexibility, there is a general consensus about the core elements. There are three levels of manufacturing flexibility. This is only feasible when a production system is under complete control of FMS technology.
The advice is to prioritise these types of flexibility and to define the required type of flexibility for the specific system under consideration 8. The main economic advantage of such systems is the capability to manufacture parts and products economically and in small volumes with the ability to respond to market changes, quality problems, design changes, scheduling conflicts with a low break-even volume, low supervisory costs and low reject levels.
The disadvantages are well known: The concept has been applied to a wide range of manufacturing industries processes requiring shape and form changing machining, metal forming, plastic moulding and forming, wood and fibre processingchemical transformation plastics, pharmaceuticalassembly where robots have had a major impact in designinformation to monitor and control manufacturing, co-ordination and decision-making and transportation raw materials, in-process goods, finished products and other resources.
The process determination implies a choice of technology labour, machines, energy sources and other inputs for which the most important criteria are feasibility and cost.
The choice of technology requires close link with product design, a function that is concerned with functional and aesthetic requirements necessary to meet actual or potential market needs at an acceptable rate of return Design for Manufacturing methods have been developed as an alternative to decrease total development time and improve the consideration of life cycle issues during product design Concurrent engineering methods suggest that product and process development should proceed in parallel, if possible.
The ISO standard for quality assurance also stresses the coherence needed between product and process design processes. The argument is particularly important given the short average product life and the relatively long product development cycles observed in modern industry.
In process design, the choice of equipment, the set or processing steps and their sequence will determine the material flow through the future plant, volumes and physical placement of raw materials, in-process and finished good inventory as well as bottlenecks and congested areas, most of which are useful information for layout decisions.
Graphs are widely used internationally to represent alternative choices in FMS process design Equipment choice is particularly important in FMS design and the decision criteria should include total investment, maintainability, future obsolescence, labour skill requirements, quality consistency, tools requirements, output rate and overall flexibility.
There is often a choice between general and special purpose equipment, the former designed to accommodate a wide range of transformations.
The complete set of criteria to evaluate process design choices should include technological feasibility, financial considerations, training requirements for operators and maintenance personnel, compatibility with existing facilities, raw material requirements, equipment size and weight as well as other physical requirements safety, temperature, water, waste, etc.
In general, economic pressures on the manufacturing industry require quick response to new markets and products, all subject to uncertain demand patterns in a very competitive global environment.
The trends are towards In addition, plant layout can reduce initial investment costs, work-in-progress inventories and manufacturing lead times15.
Projected future research needs points out towards concurrent consideration of layout and production system design issues Serial engineering leads to unacceptable delays due to the sequential nature of main design activities and necessary corrections Local decisions made by various experts are isolated in time, space and function.
Concurrent engineering on the other hand is "a systematic approach to the integrated, concurrent design of products and their related processes, including manufacture and support".
This approach is intended to cause the developers, from the outset, to consider all elements of the product life cycle from conception through disposal, including quality, cost, schedule and user requirements It is a common-sense approach to product and process design as well as support.
The clear specification of product requirements through its life cycle from the start of conception can lead to significant cost reductions both in design and production as well as shorten the development process.
As a consequence, the simultaneity of the activities integrates the views from various sectors and functions to reduce the total design time significantly. There is particular interest in functions that increase product quality and performance, reduce product manufacturing or investment costs as well as reduce lead-time for design and manufacturing In process design, concurrent engineering means the integration of conceptual design, concept optimisation, factory design, detailed design CAD, CAM and CIM plus 3D Simulationdetailed process plans including NC programs and machine tooling.
· The software developed relates to the detailed design of prismatic parts which subsequently need machining on machining centres or in a machining centre-based tranceformingnlp.com://tranceformingnlp.com A flexible manufacturing system (FMS) is a manufacturing system in which there is some amount of flexibility that allows the system to react in case of changes, whether predicted or unpredicted.
This flexibility is generally considered to fall into two categories, which both contain numerous subcategories. Flexible manufacturing system (FMS)is a framework that includes every aspect of the engineering manufacturing process,from the initial design stage through to the more important fabrication andassembly stages, with an aim to making the manufacture of the product suitableto represent all aspects of the product’s tranceformingnlp.com · Department of Mechanical Engineering Curtin Engineering UNIT OUTLINE Semester 2 Design For Manufacturing • Integration of total design for manufacture and assembly, quality control.
• Environmental conscious manufacturing.
• Flexible Manufacture System (FMS) and Computer Integrated Manufacture (CIM). • Typical tranceformingnlp.com · An FMS is a group of processing stations (predominantly CNC machine tools), Linking of production control and automated manufacture, fewer human errors, increased scheduling flexibility, just-in-time manufacture, improve d an consistent quality productivity the design of the innovation, and tranceformingnlp.com "From custom engineering designs to manufacturing products ..
let FMS build parts and partnerships with your business." Fisher Manufacturing Services is a CNC machine shop as well as a fabrication tranceformingnlp.com