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Computers and digital technology have become integral to the design and manufacture of many different types of products. From small consumer based devices right through to large manufacturing components, computer-aided design (CAD) is at the forefront of almost all digital design and manufacture. CAD is a term used to describe the use of specific computer software in the design of both real and virtual objects. Depending on the specific nature of the application, CAD programs and processes may also convey symbolic information and conventions relating to design and manufacture. CAD software is often used in the design of carrier roller (Tragrolle) systems and similar conveyor-based devices, in order to tweak and test individual components prior to their physical production.

In warehouses and manufacturing plants all over the world, carrier rollers and their related driving mechanisms are used throughout the production and distribution process of various goods. The design of carrier rollers used in conveyor belt systems are integral to the efficiency of many industrial environments, and CAD applications are the best way to refine and test these designs prior to manufacture. Small differences to measurements and geometry can have a big effect on the overall efficiency of a conveyor system, and CAD software is vital to ensure reliability and overall integration. There is a number of different types of CAD programs on the market, from simple 2D applications through to complex virtual 3D environments.

CAD is often described as an industrial art, because it combines the use of a creative skill set with a practical engineering approach. When designing an important manufacturing part such as a carrier roller or drive drum, it is vital that every measurement is perfect and well integrated into its environment. When wanting to work with a CAD application, it is important to make sure that you have access to the right kind of software. There are several different versions of CAD, each of which is specialised to perform different and unique operations. Engineering parts such as carrier rollers are often designed in parametric solid modelling environments, where accurate 3D models can be represented on a computer screen in full and glorious detail. Top of the line CAD software will often be necessary for people interested in designing small manufacturing components, with some systems offering free form surface modelling, draft views, and a number of separate user oriented modelling options.