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C. Cormier Fall 2000

ENGINEERING GRAPHICS

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C. Cormier Fall 2000

Engineering Graphics

• Engineering graphics communicate the design • Are usually in the form of drawings • Created mainly by engineers and designers and used

mainly by manufacturers to create products. Also used by others for analysis etc.

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C. Cormier Fall 2000

Engineering Drawing Types There are two main types of engineering drawings that are used in the BEST design process. They are: - Piece Part Drawings

- Show the size, shape, material, and processes used to create a part that is used on a higher assembly

- Assembly Drawings (and sub-assembly drawings) - Made up of piece parts. - Usually contain a bill of materials that lists all piece parts

and sub-assemblies needed to create the assembly. - May also contain assembly instructions or notes - All drawings are described by a drawing tree

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C. Cormier Fall 2000

PIECE PART DRAWINGS - Created using orthographic projection - Must contain the following as a minimum:

Drawing title Date Designer’s Name Material used Enough detail and dimensions to build the part Change history Next higher assembly (where used)

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C. Cormier Fall 2000

ORTHOGRAPHIC PROJECTION

- Create as many views as needed to describe the part - Additional view types are auxiliary, enlarged detail, and

section - Examples and drawing exercise

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C. Cormier Fall 2000

ASSEMBLY DRAWINGS

- Must contain at least: Drawing title Date Designer’s Name Bill of materials (parts required to build) Balloons pointing to each part on the Bill of Materials Assembly instructions Change history Next higher assembly (where used)

- Can be used in other assembly drawings. If so, it is a sub-assembly drawing.

- Examples