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CAD / CAM

Computer-aided design (CAD) is the use of computer systems to assist in the creation, modification, analysis, or optimization of a design.

Computer-aided manufacturing (CAM) is the use of computer systems to plan, manage, and control the operations of a manufacturing plant through direct or indirect computer interface with plant’s resources.

• Developing NC code requires an understanding of:

1. Part geometry

2. Tooling

3. Process plans

4. Tolerances

5. Fixturing

• Most CAD/CAM systems provide access to:

1. Part geometry

2. Tooling

•A set of tool paths and positions can be automatically generated

•These paths can be edited and modified

•These paths and instructions can then be “posted” to a specific machine

Before CAD After CAD

Computers can store and handle large amount of engineering data which can be used in various stages of design, process planning , manufacturing , analysis etc

Complex geometrical shapes can be visually inspected and checked using 3D models .

Product design and development cycle can be markedly reduced by using CAD which in turn reduces lead time

Use of CAD tools improve productivity of the design process.

Modifying and improving models of the components

Colour selection of solid models . Getting the views of the product or

components from different angles and different sections .

Checking interference between mating parts of an assembly .

Stress analysis of machine components , building and bridges

Preparing detailed components drawing and assembly drawing