TAILIEUCHUNG - Lecture Engineering drawing and design - Lecture 4: Orthographic views and sectioning

Lecture Engineering drawing and design - Lecture 4: Orthographic views and sectioning. The learning objectives for this chapter include: Prepare for DrE-3; additional features in multiview drawings: cutting plane, section, hatching, hidden feature; section views and section drawings: ribs, webs, assemblies, threads. | Design web Design web Objectives for today ME 1110 – Engineering Practice 1 Engineering Drawing and Design - Lecture 4 Prepare for DrE-3 Additional features in multiview drawings: » Cutting plane, Section, hatching, hidden feature Orthographic Views & Sectioning Section views and Section drawings » Ribs, webs, assemblies, threads Prof Ahmed Kovacevic School of Engineering and Mathematical Sciences Room C130, Phone: 8780, E-Mail: 1 Ahmed Kovacevic, City University London 2 Ahmed Kovacevic, City University London Design web Orthographic Projections Design web Orthographic Projection Properties Projection planes Definition: Orthographic projections are parallel projections that Horizontal, frontal, and profile Each projection plane is perpendicular to adjacent projection planes Preserve true relationship between features Views top, front, and right side Only use the views that are needed to represent the object The most descriptive view should be the front view Represented with dashed lines Views should be selected to minimize the use of hidden lines Parallel lines are drawn parallel The geometry is generally not distorted Parallel projectors Light from a point source at an infinite distance View from a distance through a telescope 3 Ahmed Kovacevic, City University London 4 Ahmed Kovacevic, City University London Detailed views Design web Angle projections Design web Third Angle Projection Associated with English units If English units are used assume third angle projection unless otherwise specified Include ANSI standard symbol First Angle Projection Associated with SI units (International System of units) 5 Ahmed Kovacevic, City University London 6 Ahmed Kovacevic, City University London Design web Sectioned Drawing Design web How to reveal hidden feature Definition: » A multiview technical drawing that reveals details about internal features by displaying the part .

• Cơ khí - Chế tạo máy
• Engineering drawing
• Engineering design
• Lecture Engineering drawing and design
• Orthographic views
• Multiview drawings
• Section views
• Communication modes
• Technical drawing standards
• Drawing procedure
• Assembly drawing
• Engineering design process
• Mechanical design process
• Problem definition
• Alternative solutions
• Satellite hinge
• Failure mode
• Example shaft
• Textbook of engineering drawing
• Drawing instruments
• Dimensioning practices
• Geometrical constructions
• Orthographic projections
• The nature of design
• Communication of design
• Philosophy of designing
• Recognize types of pictorials
• Parallel projection
• Perspective projections
• Features geometric tolerances
• Geometric tolerances
• Surface finish
• Tolerance declaration
• Direct tolerancing method
• Tolerance terminology
• Editing commands
• Textual window
• Layer technique
• Multiline text
• Selecting objects
• Creating drawings
• Design communication
• Technical writing
• Graphical communication
• Mechanical design
• Preliminary design
• Mechanical systems
• Mechanical elements
• Rolling element bearings
• Bearing assembly
• Shaft design characteristics
• Shaft design
• Mechanical elements screws
• Non permanent joints
• Screw threads
• Space frames
• Space truss
• Gear types
• Gear parameters
• Effects analysis
• Oral presentation
• Isometric projection
• Freehand sketching
• Isometric views
• Engineering Drawing & CAD Standards
• Drawing Conventions
• Thread And Fastener Representation
• Line Conventions
• Drawing Media