An example of the relationship between cad and cam

Computer-Aided Design (CAD) and Computer-Aided Manufacturing (CAM) - benefits

an example of the relationship between cad and cam

cad or computer aided design is the use of software to create two or three product on a computer software like in our case a PCB on EAGLE for example. The relation between CAD and CAM is one of form to function and they are often . Download scientific diagram | CAPP as a bridge between CAD and CAM [19] from publication: The manufacturing process flowcharts for examples of electrical wires and power cable [22] Figure 1 illustrates this functional relationship. In , Mark Miller, president of MicroCIMM systems, attempted to make a CAD/ CAM software package designed for lathes available for only one tenth of the.

an example of the relationship between cad and cam

The development of CAD and CAM and particularly the linkage between the two overcame these problems by enabling the design and manufacture of a part to be undertaken using the same system of encoding geometrical data. This eliminated the need for a tape encoding specialist and greatly shortened the time between design and manufacture.

Computers are also used to control a number of manufacturing processes that are not defined as CAM because the control data are not based on geometrical parameters.

An example of this would be at a chemical processing plant. Using CAD it is possible to simulate in three dimensions the movement of a part through a production process.

an example of the relationship between cad and cam

This process can simulate feed rates, angles and speeds of machine tools, the position of part-holding clamps, as well as range and other constraints limiting the operations of a machine. The continuing development of the simulation of various manufacturing processes is one of the key means by which CAD and CAM systems are becoming more tightly integrated. This is of particular importance when one firm contracts another to either design or produce a component. Designs can be altered without erasing and redrawing.

CAD systems offer "zoom" features analogous to a camera lens whereby a designer can magnify certain elements of a model to facilitate inspection. Computer models are typically three-dimensional and can be rotated on any axis, much as one could rotate an actual three dimensional model in one's hand, enabling the designer to gain a fuller sense of the object.

CAD systems also lend themselves to modeling cutaway drawings, in which the internal shape of a part is revealed, and to illustrating the spatial relationships among a system of parts. To understand CAD it is useful to understand what it can't do.

Difference Between CAD and CAM

CAD systems have no means of comprehending real-world concepts, such as the nature of the object being designed or the function that object will serve. CAD systems function by their capacity to codify geometrical concepts. Thus the design process using CAD involves transferring a designer's idea into a formal geometrical model.

In this sense, existing CAD systems can't actually design anything, but can provide tools, shortcuts, and a flexible environment for a designer to work with. Other limitations to CAD are being addressed by research and development in the field of expert systems. This field derived from research done on artificial intelligence.

CAD/CAM software

One example of an expert system involves incorporating information about the nature of materials—their weight, tensile strength, flexibility and so on—into CAD software.

By including this and other information, the CAD system could then "know" what an expert engineer knows when that engineer creates a design. The system could then mimic the engineer's thought pattern and actually "create" a design. Expert systems might involve the implementation of more abstract principles, such as the nature of gravity and friction or the function and relation of commonly used parts, such as levers or nuts and bolts.

One of the key areas of development in CAD technologies is the simulation of performance. Among the most common types of simulation are testing for response to stress and modeling the process by which a part might be manufactured or the dynamic relationships among a system of parts. In stress tests, model surfaces are shown by a grid or mesh that distorts as the part comes under simulated physical or thermal stress.

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Dynamics tests function as a complement or substitute for building working prototypes. The ease with which a part's specifications can be changed facilitates the development of optimal dynamic efficiencies both as regards the functioning of a system of parts and the manufacture of any given part.

Simulation is also used in electronic design automation, in which simulated flow of current through a circuit enables the rapid testing of various component configurations. The processes of design and manufacture are, in some sense, conceptually separable.

Yet the design process must be undertaken with an understanding of the nature of the production process. It is necessary, for example, for a designer to know the properties of the materials with which the part might be built, the various techniques by which the part might be shaped, and the scale of production that is economically viable.

The conceptual overlap between design and manufacture is suggestive of the potential benefits of CAD and CAM and the reason they are generally considered together as a system. The was the first plane Boeing produced that was completely designed by CAD systems. Designing the took longer than theits predecessor.

an example of the relationship between cad and cam

This occurred in part because the use of CAD incorporated a broader scope of considerations into the design process. The was made from parts produced by over 50 different firms. Additionally, Boeing engineers had scheduled ten days for the assembly of the fuselage and wing spars of the firstbut actual assembly took only two days.

CAD/CAM | Computer-Aided Design And Manufacturing | Autodesk

Boeing estimated that the use of CAD throughout the design process lowered overall person hours for assembly by one-third. Last, the analysis functions of CAD enabled the number of working prototypes to be reduced to 3, down from 12 for the CAD systems also offer "zoom" features analogous to a camera lens, whereby a designer can magnify certain elements of a model to facilitate inspection. Computer models are typically three dimensional and can be rotated on any axis, much as one could rotate an actual three dimensional model in one's hand, enabling the designer to gain a fuller sense of the object.

CAD systems also lend themselves to modeling cutaway drawings, in which the internal shape of a part is revealed, and to illustrating the spatial relationships among a system of parts. CAD systems have no means of comprehending real-world concepts, such as the nature of the object being designed or the function that object will serve.

an example of the relationship between cad and cam

CAD systems function by their capacity to codify geometrical concepts. Thus the design process using CAD involves transferring a designer's idea into a formal geometrical model. Efforts to develop computer-based "artificial intelligence" AI have not yet succeeded in penetrating beyond the mechanical—represented by geometrical rule-based modeling. Other limitations to CAD are being addressed by research and development in the field of expert systems.

This field is derived from research done in AI. One example of an expert system involves incorporating information about the nature of materials—their weight, tensile strength, flexibility, and so on—into CAD software. By including this and other information, the CAD system could then "know" what an expert engineer knows when that engineer creates a design. The system could then mimic the engineer's thought pattern and actually "create" more of the design.

Expert systems might involve the implementation of more abstract principles, such as the nature of gravity and friction, or the function and relation of commonly used parts, such as levers or nuts and bolts. Such futuristic concepts, however, are all highly dependent on our abilities to analyze human decision processes and to translate these into mechanical equivalents if possible. One of the key areas of development in CAD technologies is the simulation of performance.

Among the most common types of simulation are testing for response to stress and modeling the process by which a part might be manufactured or the dynamic relationships among a system of parts. In stress tests, model surfaces are shown by a grid or mesh, that distort as the part comes under simulated physical or thermal stress.

an example of the relationship between cad and cam

Dynamics tests function as a complement or substitute for building working prototypes. The ease with which a part's specifications can be changed facilitates the development of optimal dynamic efficiencies, both as regards the functioning of a system of parts and the manufacture of any given part. Simulation is also used in electronic design automation, in which simulated flow of current through a circuit enables the rapid testing of various component configurations. The processes of design and manufacture are, in some sense, conceptually separable.

Yet the design process must be undertaken with an understanding of the nature of the production process. It is necessary, for example, for a designer to know the properties of the materials with which the part might be built, the various techniques by which the part might be shaped, and the scale of production that is economically viable.