Modern Graphics Communication

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Presentation transcript:

Modern Graphics Communication

Topics Graphic Language & Design CAD Systems Sketching Techniques Lettering Geometric Constructions Multiview Projection Sectional Views Auxiliary Views & Developments Dimensioning Tolerancing Working Drawings

What is Graphic Communication? a universal language Standards organizations like ANSI (American National Standards Institute) and ISO (International Standards Organization) publish standards detailing how drawings should be created so they can be interpreted universally. the primary medium for communicating and developing design concepts

The Engineering Design Process

Design is an Iterative Process Begins with a recognition of need for a product, service, or system During the idea phase encourage a wide variety of solutions through brainstorming, literature search, and talking to users Best solutions are selected for further refinement Models or prototypes are made and problems that arise may require new ideas to solve and a return to an earlier stage in the process Finally drawings are released to manufacturing for production

Engineering Design Uses Sketching & CAD Ideas are initially sketched and then more accurate CAD drawings are created A single accurate CAD database can be used to go from ideation to manufacturing and documentation. Finite Element Analysis, 3D rendering, animation, documentation, rapid prototyping software are available for use with CAD.

Terminology CAD: Computer Aided Design CADD: Computer Aided Design & Drafting CAM: Computer Aided Manufacturing CIM: Computer Integrated Manufacturing CAE: Computer Assisted Engineering Reading Drawings: Interpreting drawings made by others Technical Drawing: Drawings used to express technical ideas Engineering Design Graphics: Technical Drawings representing designs & specifications for physical objects

Freehand Sketching Freehand sketching is used in engineering graphics to quickly communicate your ideas or designs. Drawing instruments and CAD are not always available, especially during field work Freehand sketching is not sloppy sketching! Your sketches need to be interpreted by others on your design team – use good lettering.

Example Freehand Sketch for Concept Development

Summary Engineering drawing can be a universal language to communicate your ideas. The engineering design process uses sketching and CAD to communicate and record ideas. A single CAD database can be used to produce many types of drawings and models used throughout the design process.. ie: NC manufacturing, inspection, shipping containers

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