Digital design tools
As a result of advances in technology, it is common practice for digital technology to be used to aid the design, development and manufacturing of components and products. Digital design tools include:
- computer aided engineering (CAE)Used to test a computer aided design (CAD) through computer simulations, providing data to be analysed by designers.
- computer aided design (CAD)The process of creating a 2D or 3D design using computer software.
- computer aided manufacture (CAM)The manufacture of a part or product from a computer aided design (CAD) using computer-controlled machinery, such as a 3D printer.
A design could start as a set of 2D sketches then evolve into a 3D CAD drawing of the part. rapid prototypingQuickly making models, usually by additive manufacturing (building up a 3D model in layers)., eg using 3D printing, can quickly allow it to be tested, evaluated and then finally machined using computer numerical controlled (CNC) machinery, eg a CNC milling machine.

Image caption, Initial sketches

Image caption, An example of computer aided design (CAD)

Image caption, 3D printing

Image caption, A computer numerical controlled (CNC) milling machine
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Computer aided engineering (CAE)
Computer aided engineering (CAE) enables a designer to test and analyse the performance of a component or design through the use of computer simulation software. The use of CAE offers greater analytical capabilities in comparison to traditional testing, including:
- decreasing the lead timeThe time between the start of a project and the final product being manufactured. of a product
- enabling different materials to be tested for suitability
- reducing the cost of development
- decreasing development time as data can be analysed quickly
- allowing improvements to be made quickly as the files are digital
Computer aided design (CAD)
Computer aided design (CAD) software is a common feature of an iterative design A cyclic design process of modelling and testing to achieve gradual improvements to the design. process, allowing designers to create designs digitally in either 2D or 3D form. This can then be edited and manipulated quickly and can be exported to be used in computer aided manufacture (CAM).
Computer aided manufacture (CAM)
A product can be designed on a computer aided design (CAD) package and then sent to a computer aided manufacture (CAM) machine to be cut out, eg using a laser cutter. This can have a high initial cost so is often used in mass production or to create rapid prototypeThe first working model of a design used for testing, development and evaluation. at the start of a design process to save time and money.

Image caption, Computer aided design (CAD)

Image caption, Computer aided manufacture (CAM) - A laser cutter
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