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Understanding Engineering Drawings: https://www.youtube.com/watch?v=ht9GwXQMgpo
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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
What is included in Production Preparation? (4)
Production conform, Mounting conform, testing conform, norms + manufacturing.
What is included in Product Sales? (4)
Cost-efficiency, form, fit, function
What is included in In-Service? (4)
Complaints: load, corrosion, reliability, maintainability
What is related to End of Life? (1)
Recyclability
Technical Drawing: Characteristics (3) (cf. language)
Complete
Unambiguous
Fully understandable
Technical Drawing: Goals (3)
Illustrating forms and transporting thoughts in graphic form.
Communcation between persons and depts.
Documentation (register)
Sketches: Clearness vs. Abstraction levels. From more clear to less clear (5)
Photorealistic representation
3D-Sketch
2D-Sketch
Symbolic 2D-Sketch
Verbal description
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
Norms and Standards: Organisations (3)
DIN: Deutsches Institut für Normung, e.V.
EN: European Norm
ISO: International Organisation for Standarisation (ISO = “equal“)
Parts of the Drawing Sheet (5)
Edge of uncropped drawing sheet
Edge of cropped drawing sheet
Edge of drawing area
Drawing area
Text field
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
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
Scales (for n > 1, 1 > t > 0)
1 : 1 = original
n : 1 = enlargement
1 : t = reduction
Recommended scales (Hint: nice numbers, specially for reduction)
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
Line groups and widths. What did we use for technical drawings?
Standard Font and Height
Font B, vertical
Capital letters: h
Lowercase: 7/10 h