1. and 1.1 Introduction to Technical Drawing

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Understanding Engineering Drawings: https://www.youtube.com/watch?v=ht9GwXQMgpo

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18 Terms

1
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What are the stages of Product Life Cycle? (7)

Product Planning, Construction, Production Preparation, Manufacturing, Sales, In-Service, End of Life and Recycling

<p>Product Planning, Construction, Production Preparation, Manufacturing, Sales, In-Service, End of Life and Recycling</p>
2
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What is included in Production Preparation? (4)

Production conform, Mounting conform, testing conform, norms + manufacturing.

<p>Production conform, Mounting conform, testing conform, norms + manufacturing.</p>
3
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What is included in Product Sales? (4)

Cost-efficiency, form, fit, function

<p>Cost-efficiency, form, fit, function</p>
4
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What is included in In-Service? (4)

Complaints: load, corrosion, reliability, maintainability

<p>Complaints: load, corrosion, reliability, maintainability</p>
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What is related to End of Life? (1)

Recyclability

<p>Recyclability</p>
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Technical Drawing: Characteristics (3) (cf. language)

  • Complete

  • Unambiguous

  • Fully understandable

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Technical Drawing: Goals (3)

  • Illustrating forms and transporting thoughts in graphic form.

  • Communcation between persons and depts.

  • Documentation (register)

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Sketches: Clearness vs. Abstraction levels. From more clear to less clear (5)

  • Photorealistic representation

  • 3D-Sketch

  • 2D-Sketch

  • Symbolic 2D-Sketch

  • Verbal description

<ul><li><p>Photorealistic representation</p></li><li><p>3D-Sketch</p></li><li><p>2D-Sketch</p></li><li><p>Symbolic 2D-Sketch</p></li><li><p>Verbal description</p></li></ul><p></p>
9
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Norm and Standards: Goals (3) and key term (1)

  • Rules of technical drawings.

  • Standarisation of form, size, design of product and processes.

  • Solution for recurring tasks/problems

  • Standarisation

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Norms and Standards: Organisations (3)

  • DIN: Deutsches Institut für Normung, e.V.

  • EN: European Norm

  • ISO: International Organisation for Standarisation (ISO = “equal“)

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Parts of the Drawing Sheet (5)

  • Edge of uncropped drawing sheet

  • Edge of cropped drawing sheet

  • Edge of drawing area

  • Drawing area

  • Text field

<ul><li><p>Edge of uncropped drawing sheet</p></li><li><p>Edge of cropped drawing sheet</p></li><li><p>Edge of drawing area</p></li><li><p>Drawing area</p></li><li><p>Text field</p></li></ul><p></p>
12
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Sheet formats: What is A0, what is the aspect ratio and the scale?

  • An = “Area“n

  • A0 = 1 m2

  • sqrt(2) : 1

  • A0 : A1 = 2 : 1

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Information on the Text Field (5)

  • Component designation (name of the part/file)

  • Material specifications

  • Tolerance specifications

  • Infromation of creator of the drawing

  • Scale spacifications

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Scales (for n > 1, 1 > t > 0)

  • 1 : 1 = original

  • n : 1 = enlargement

  • 1 : t = reduction

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Recommended scales (Hint: nice numbers, specially for reduction)

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Line groups and widths (Hint: from A to K, the ones in technical drawings)

  • Broad always a fixed size for every broad, narrow always fixed size for every narrow

<ul><li><p>Broad always a fixed size for every broad, narrow always fixed size for every narrow</p></li></ul><p></p>
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Line groups and widths. What did we use for technical drawings?

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Standard Font and Height

  • Font B, vertical

  • Capital letters: h

  • Lowercase: 7/10 h