Mechanical Engineering Drawing and Graphics ME 210

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Mechanical Engineering Drawing and Graphics (ME
210)

• Term 041
• Course Outline Introduction

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Instructor Details

• Mohammed Faisal Ahmed
• Office Room 23/059
• Phone 2797
• E-mail faisal_at_kfupm.edu.sa
• URL http//faculty.kfupm.edu.sa/me/faisal
• OH SUM 1000 - 1050 am
• T 1100 1150 am
• Courses added to WebCT

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Course Outline

• Outline

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The Graphic Language Design

• The members of the engineering design project
  team must be able to communicate among themselves
  and with the rest of the project team in order to
  contribute to the teams success.
• The graphic language is the universal language
  used by every engineering team designing and
  developing products throughout the world.
• There are two basic types of drawings artistic
  and technical.
• Technical drawing is based on the universal
  principles of descriptive geometry, developed in
  the late eighteenth century in France.

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The Graphic Language Design

• The design process is the ability to combine
  ideas, scientific principles, resources, and
  existing products into a solution for a problem.
  It consists of five specific stages.
• Problem Identification
• Concepts Ideas
• Compromise Solutions
• Models or Prototypes
• Production or working drawings

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Introduction to CAD

• Computers have revolutionized the drawing
  process. New technologies are constantly invented
  which make this process quicker, more versatile,
  and more powerful.
• CAD is the tool of choice for engineering design
  companies. The effective user of this tool
  requires an understanding of technical drawing
  fundamentals as well as training on the CAD
  software program.

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Introduction to CAD

• CAD software can draw in three dimensions (width,
  height, and depth), unlike paper drawing which
  only consists of two dimensions in a single
  view.
• Different CAD packages have different operational
  procedures, and different strengths and
  weaknesses. Three features found in all CAD
  software are commands for geometry generators,
  functions to control the viewing of drawing
  geometry, and modifiers for changing the drawing
  or editing variations.
• Operating a CAD system typically has required
  extensive training. Newer CAD systems are
  becoming more user friendly, but one should not
  overestimate the claims CAD packages make. It is
  important to evaluate each package thoroughly and
  make an informed decision.

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Instrument Drawing, Freehand Sketching
Lettering Techniques

• An understanding of the basic principles of
  drawing is required to draw with either a pencil
  or with CAD software.
• Both CAD and traditional drawing have specific
  methods for drawing lines, arcs, and circles.
  Proper understanding of the elements of this
  basic geometry is essential for both mechanical
  and CAD drawing.
• Every drawing tool, including every CAD software
  program, requires careful study of the tools and
  procedures for using the tools. Proper use of
  each tool facilitates the creation of neat,
  accurate drawings. Improper use of a tool creates
  sloppy, inaccurate drawings.
• The proper sizing of a drawing requires complete
  understanding of the use of scales. Paper
  drawings are scaled before they are drawn. CAD
  drawings are scaled when they are printed.

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SolidWorks

• Introduction

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Introduction

• It is a state-of-the-art 3D CAD modeling tool
• It represents an object in a virtual environment
  just as it exists in reality, i.e. having mass
  and volume properties as well as surfaces and
  edges
• Complex 3D parts with contoured surfaces and
  detailed features can be modeled quickly and
  easily
• Many parts can be assembled in a virtual
  environment to create a computer model of the
  finished product (assembly)
• Traditional engineering drawings can be easily
  generated from the solids models of both the
  parts and the final assembly

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Constraint Based Solid Modeling

• The 3D Modeling begins with the creation of a 2-D
  sketch of the profile for the cross section of
  the part.
• The initial sketch need not be accurate it needs
  only to reflect the basic geometry of the parts
  cross-sectional shape. Details of the
  cross-section can be added later.
• The next step is to constrain the 2-D sketch by
  adding enough dimensions and parameters (defining
  relations) to completely define the shape and
  size of the 2-D profile.
• Finally, a three-dimensional object is created by
  revolving, sweeping or extruding the 2-D sketched
  profile. EXAMPLE

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SolidWorks Demo

• DEMO