Technical Drawings

Technical Drawings

Ken Youssefi

ME dept., SJSU

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Technical Drawings Working Drawings A set of engineering drawings for the purpose of production and communicating the design to others. • Shop Drawings (detail drawings) – Two dimensional multiview drawings of each component for the purpose of fabrication.

• Assembly and Subassembly Drawings – three dimensional drawings showing all parts assembled. Parts list or a bill of materials (BOM) should be included.

• Exploded View Drawings – three dimensional drawings showing how parts should be assembled. Ken Youssefi

ME dept., SJSU

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Multiview Standard Drawings – 2D views • Draw at least two orthographic views, three views are common. • Select the most descriptive view as the front view. • Select the sequence of views with the fewest hidden lines. • Leave adequate room between the views for dimensions and notes. • Show all lines: visible, hidden and centerlines. • Dimension all features, avoid over dimensioning. • Include notes to provide more information. • Specify material and heat treatment if required. • Include a standard title block. Title block should include; name, project name, part number, date, scale, units, material, surface roughness, revision, ….. Ken Youssefi

ME dept., SJSU

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2D Technical Drawing - Example

Ken Youssefi

ME dept., SJSU

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Assembly Drawings Normally no dimensions are given in the assembly drawings

Geneva wheel

Ken Youssefi

ME dept., SJSU

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Exploded View

Ken Youssefi

ME dept., SJSU

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Assembly and Exploded Views

Ken Youssefi

ME dept., SJSU

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Sectioned Assembly and Exploded Views

Ken Youssefi

ME dept., SJSU

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Flow Lines for Exploded Views

Ken Youssefi

ME dept., SJSU

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Pictorial Shaded Exploded Assembly Drawing

Ken Youssefi

ME dept., SJSU

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Pictorial Shaded Assembly Drawing

Ken Youssefi

ME dept., SJSU

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Pictorial Shaded Assembly Drawing

Ken Youssefi

ME dept., SJSU

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Pictorial Shaded Assembly & Subassembly Drawing

Ken Youssefi

ME dept., SJSU

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Pictorial Shaded Exploded Assembly Drawing

Ken Youssefi

ME dept., SJSU

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Pictorial Shaded Assembly Drawing

Ken Youssefi

ME dept., SJSU

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Pictorial Shaded Exploded Assembly Drawing

Ken Youssefi

ME dept., SJSU

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