WL 141 Unit 01
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This document discusses the basics of blueprint reading for welders. It explains that different line types have separate meanings and determine the shape and dimensions of an object. Drawings use orthographic projections to describe an object in enough detail to allow for fabrication. Views have a definite arrangement and alignment with each other, with the front view typically providing the best shape and detail information.
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Auxiliary views are orthographic projections used to show the true size and shape of inclined or oblique surfaces that cannot be fully represented in the standard three views. Auxiliary views are projected from principal views or other auxiliary views. They are used when features need to be shown at their true size for dimensioning or determining measurements like dihedral angles between surfaces. Multiple successive auxiliary views can be created by projecting additional views from existing auxiliary views.
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Download link: https://www.researchgate.net/publication/318852873_Engineering_Drawing_-_I
DOI: 10.13140/RG.2.2.22512.56328
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Download link: https://www.researchgate.net/publication/318852873_Engineering_Drawing_-_I
DOI: 10.13140/RG.2.2.22512.56328
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Description is the fiction-writing mode for transmitting a mental image of the particulars of a story. Together with dialogue, narration, exposition, and summarization, description is one of the most widely recognized of the fiction-w
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This document provides an overview of engineering drawing topics including:
1. Orthographic views show objects from different angles including top, front, side, and section views.
2. Pictorial views like isometric drawings show a 3D appearance but distort some dimensions.
3. Dimensioning and tolerancing provide critical size and shape specifications.
4. Traditional tools like T-squares, compasses, and templates were used to manually create accurate drawings, while modern software allows computer-generated drawings.
5. Standards ensure consistency in layout, line types, lettering and other elements so drawings are clear to all readers.
ENGINEERING GRAPHICS ppt.ppt
This document provides information on sectioning of solids in engineering graphics. It discusses key concepts like section planes, points of intersection, and true shapes of sections. Different types of section planes are described along with their representations. Guidelines are provided for hatching sections and examples given to illustrate obtaining front views, sectional top views, and true shapes of sections for various solids cut by different planes.
ppt.pdf
In parallel projection, coordinate positions are
transformed to the view plane along parallel lines.
In perspective projection, object position are
transformed to the view plane along lines that
converge to a point called projection reference point
(center of projection)
Engineering-Drawing-Notes.pptxPart A - 2D Drawing Principles
Detail drawings completely describe a single part with multiview orthographic projections.
Should provide all the information necessary to economically manufacture a high quality part.
Drawing reading and measurements
This will explain the basics of blue print reading,scales,lines,projection view, limits and tolerances
Ed ass 2013
The document discusses different types of engineering drawings and projections used in engineering communication. It covers orthographic projections, which use multi-view 2D drawings to represent 3D objects. It also discusses pictorial projections like isometric, oblique, and perspective projections which use a single-view representation. The document outlines the different types of lines used in engineering drawings like visible, hidden, center lines. It provides examples of isometric, oblique and perspective projections and their applications in engineering drawings.
Unit-E---Multiview-Drawing--Powerpoint (1).ppt
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This document provides an overview of basic engineering drawing concepts and standards. It discusses orthographic projection including first and third angle projection. It describes sectioning, lines, abbreviations, dimensioning, and the conventional representation of common features such as threads, springs, and gears. Pictorial drawing methods including isometric and oblique drawings are also covered. The document aims to explain the essential terminology, techniques, and standards used for engineering drawings.
Class 10 presentation
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Draw 111- mechanical drawing and orthographic drawing
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Engineering-Drawing-Notes.pptxPart A - 2D Drawing Principles
Engineering-Drawing-Notes.pptxPart A - 2D Drawing Principles
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WL 141 Unit 01
- 1. Blueprint Reading for Welders 8th Edition Unit 1 Basic Lines and Views
- 2. Objectives • Identify and describe the usage for common line types • Identify two different methods in which an object is represented on a print • Identify the proper orientation of the views used in an orthographic projection
- 3. Objectives (cont’d.) • List the different views used in an orthographic projection
- 4. Basic Lines • Each line type has a separate meaning • Line determines: – Shape of object – Dimensioning
- 10. Basic Views • Drawings describe an object in sufficient detail to permit fabrication • Orthographic projection: exact form of object shown by various views
- 11. Basic Views (cont’d.) • Views have a definite arrangement – Top view directly above and in line with front view – Right side view to the right and in line with front view – In accordance with third angle orthographic projection
- 13. Basic Views (cont’d.) • No limit on number of views – Three usually sufficient – Bottom left and side views may be included • Front view gives best indication of shape and detail • Profile selected for front view describes most detail
- 14. Basic Views (cont’d.) • Views have a specific position with relation to each other – Horizontal or vertical alignment
- 16. Summary • Lines determine shape and dimension of object • Drawings describe object in sufficient detail for fabrication • Views have specific arrangement • No limit on number of views • Profile selected for front view describes the most detail