Drafting and Design Technology

Credit: 1.00
Course Preface
Core Code: 40-10-00-00-030
Printable Version: Drafting and Design Technology (pdf)

Course Description
Introductory Drafting - Students will be use technical knowledge and skills to plan and prepare scale pictorial interpretations of engineering and design concepts. Includes instruction in the use of precision drawing instruments, computer design programs (CAD), sketching and illustration, and specification interpretation.

CAD Drafting - Computer Aided Drafting (CAD) is simply a tool to complete a design or drafting problem as are drafting machines, triangles, scales, etc. We still use the same concept in design or production drawing. We still use orthographic drawings, sketching techniques, pictorials, sections, auxiliary views with dimensions, and ANSI Y14.5 standards.

Advanced Drafting - Advanced Drafting is the third step in understanding the application required to produce a workable drawing. Good sketching techniques should be emphasized when preparing to start a working drawing. Drawings that are assigned should complement the competency and require the student to solve problems, not just copy.

Core Standards of the Course

Standard 480101-01
Students will be able to understand professional drafting room procedures and safe practices.

Standard 480101-02
Students will be able to use of drafting machine and tools

Standard 480101-03
The student will be able to understand and demonstrate sketching techniques.

related academic: (m4.2, m6, m8.9)

Standard 480101-04
The student will be able to understand and demonstrate the use of vertical, upper case, and gothic lettering.

related academic: (c1, c7)

Standard 480101-05
The student will be able to understand and demonstrate drawing layouts.

related academic: (c7, m8.9)

Standard 480101-06
The student will be able to understand and demonstrate how to complete a drawing using the alphabet of lines.

• Understand and demonstrate the use of hidden lines.
• Understand and demonstrate the use of center lines cross without voids.
• Understand and demonstrate proper placement of dimensions on the dimension line.
• Understand and demonstrate proper spacing between the object and the extension line.
• Understand and demonstrate proper length of extension lines as they extend past the last arrowhead.
• Understand and demonstrate the minimum distance used between the object and the first dimension line.
• Understand and demonstrate the uniform spacing between dimension lines.

related academic: (m8.9)

• Understand and demonstrate leaders.
• Understand and demonstrate the proper use of leaders in relation to placement with dimension lines.
• Understand and demonstrate leaders in relation to arcs and circles.
• Understand and demonstrate proper ending of leaders.

Standard 480101-07
The student will be able to develop drawings to specified scales.

related academic: (m1, m7.1, m7.4, m13)

Standard 480101-08
The student will be able to understand how to reproduce a drawing.

related academic: (m1)

Standard 480101-09
The student will be able to produce geometric shapes such as straight lines, geometric angles, plane figures, circles and arcs, and irregular geometric figures.

related academic: (m4.4, m8.9)

Standard 480101-10
The student will be able to develop a complete multi-view drawing.

related academic: (m4.4, m8.9)

Standard 480101-11
The student will be able to apply standard dimensioning practices to a drawing.

related academic: (m1, m7.1, m7.4, m13, c1, c7, s2, s3, s8, s11, c10, c20, c21)

Standard 480101-12
The student will be able to develop a technical drawing using standard sectional views such as full, half, offset, broken-out, removed, and revolved.

related academic: (m6, m8.9

Standard 480101-13
The student will be able to use and care for computer hardware.

related academic: (c10, c11, c17, s11)

• Demonstrate the proper care of equipment.
• Operate and adjust input-output devices (printers, plotters).
• Use correct procedures for the handling and operation of storage media.
• Use correct procedures for the startup and shutdown of workstations such as the correct procedure to exit software.
• Adjust monitor controls for maximum comfort and usability.
• Recognize the availability of information services; e.g., electronic mail, bulletin boards, browser, gopher.

Standard 480101-14
The student will be able to understanding physical and safety factors.

• Position the screen, chair, keyboard, and lighting for comfort and to ensure good health and posture.

related academic: (c10, c11, c17, s11)

• Remove any electrical or mechanical hazards.

Standard 480101-15
The student will be able to understand and use the computer operating system.

• Gain access into CAD software with correct prior configuration.
• Use reference manuals, library materials, and textbooks.

• Use the correct operating system to copy, delete, and rename files, and check disks.
• Make correct file backups.

• Use the correct procedure to format 3.5” floppy disks.

• Use the correct procedure to import/export: txt, iges, dxf files.

• Use the correct technique in storing drawings to the hard drive and floppy drive.

  related academic: (c10, c11, c17, s11)

Standard 480101-16
The student will be able to understand and use basic CAD drafting skills.

• Use correct papers, vellum, mylar, plotter pens, toner, and cartridges.

• Use cartesian coordinates, absolute, polar, and relative to create drawings.

• Use decimals, fractions, feet and inches, and metric engineering measurements.

• Use correct lettering techniques and correct text sizes and styles.

• Plot to scale and use correct plot specs.
• Plot drawings with correct line widths.
• Plot on different media, pens, plotters, and printers.

related academic: (c1, c7, c11, c16, m1, m4.2, m6, m7.1, m7.4, m8, m8.9, m13, s8)

Standard 480101-17
The student will be able to create drawings using a CAD system.

• Create and place appropriate orthographic views.
• Create and place appropriate auxiliary views.
• Create and place appropriate section views.
• Identify and create axonometric drawings; i.e., isometric, dimetric, and trimetric.
• Identify and create oblique drawings; i.e., cabinet and cavalier

• Use a setup for decimal inches, feet, engineer, and degree of precision.
• Make a setup for different-sized work areas and scale the drawing per software package.

• Use snap, x,y,z, entity, grid, and positioning methods.

related academic: (c10, c11, c17, m1, m2, m4, m4.1, m4.4, m6, m7, m7.1, m8, m8.9, s2, s3, s8, s11)

Standard 480101-18
The student will be able to edit drawings using a CAD system.

• Use trim, extend, fillet, scale, stretch, offset, rotate, mirror, pedit, and ddmodify.

• Edit text, drawing format, and spelling.
• Use and change properties.

  related academic: (m1, m8.9, s2, s3, s8, s11)

Standard 480101-19
The student will be able to manipulate drawings using a CAD system.

• Move the origin to assist in drawing.
• Use control coordinates and display scale.

• Use line types, color, line, and widths.

• Use dynamic, rotation, zooming, panning, and window.

• Insert standard parts and symbols into the drawing.

related academic: (m1, m4, m6, m7.1, m8.9, m9, m10, s2, s3, s8, s8.9, s11)

Standard 480101-20
The student will be able to analyze drawings using a CAD system.

• Use distance, list, status, area, dblist, time, entity characteristics, and save time.

  related academic: (c11, m5.1, m5.2, m5.3, m5.4, m5.5, m7.1, s8, s11)

Standard 480101-21
The student will be able to dimension drawings using a CAD system.

• Avoid redundant dimensions.
• Avoid dimensioning to hidden lines.
• Place dimensions on most descriptive views.

• Use arrowhead, slashes, and ticks when dimensioning.

• Place dimensions on view in compliance with ansi y14.5 standards.
• Dimension lines, angles, arcs, pyramids, and circular objects.

• Dimension features from center lines, lines of symmetry, theoretical points, and of intersection.
• Use appropriate dual dimensioning standards.
• Use correct size and location dimensions.
• Use correct dimension variable settings.
• Use cartesian, polar, and datum dimensions.
• Use ordinate dimensions; e.g., tabular and baseline dimensions.

  related academic: (s2, s3, s8, s11)

Standard 480101-22
The student will be able to create drawings using a CAD system.

related academic: (m8.9, s2, s3, s8, s11)

Standard 480101-23
The student will be able to edit drawings using a CAD system.

• Edit dimensions using grips.
• Change system variable settings for dimensioning (dim vars).
• Edit dimensions using update, newtext, hometext, oblique, trotate, tedit, or similar terms used in your CAD package.

related academic: (m1, m8.9, s2, s3, s8, s11)

Standard 480101-24
The student will be able to manipulate drawings using a CAD system.

related academic: (m1, m8.9, s2, s3, s5, s6, s7, s8, s11)

Standard 480101-25
The student will be able to analyze drawings using a CAD system.

related academic: (c11, m4.1, m4.3, m4.4, m5, s2, s3, s8, s9, s10, 11)

Standard 480101-26
The student will be able to use the CAD system to increase productivity and work habits.

related academic: (c8, c10, c11, c17, m1, s2, s3, s8, s11)

Standard 480101-27
The student will be able to demonstrate the use of auxiliary views.

related academic: (m1, m4, m4.4, m6, m8, m8.9)

Standard 480101-28
The student will be able to demonstrate the use of intersections and developments.

• Flat surface pattern development (boxes).
• Flat surfaced pattern pipe.
• Pipe patterns with an angle of turn (end cuts).
• Flat surface pattern prism.
• Intersections of prisms.
• Intersections of pipes.

• True length.
• Right pyramid development.
• Conical surface development (cone).
• Truncated cone development.

• Rue length.
• Square to round.
• Rectangular to round.
• Round to round different diameters.
• Circular pipes oblique joints.
• Intersections of prisms and cylinders.
• Oblique cone development.

Standard 480101-29
The student will be able to understand and demonstrate the use of fasteners.

Standard 480101-30
The student will be able to understand and demonstrate the use of isometric drawings.

• All axes are constructed at 120 degrees off the vertical (30 degrees off the horizontal).

• Holes, cylinders, prisms, and other features are in proper alignment and in their proper relationship to each other.
• Hidden lines are omitted.
• Shading and dimensions (when required) are shown according to the text and instructions given.
  

• Angles and other non-isometric lines are constructed according to the instructions in the text

related academic: (m1, m6, m8.9)

Standard 480101-31
The student will be able to understand and demonstrate the use of oblique drawings.

• All axes are shown at the designated angles and positions.
• The drawing is to the appropriate size and scale.
• Circles are constructed as ellipses in the oblique planes.
• Parallel lines are drawn as required in text instructions.
  

• Angles and other non-isometric lines are constructed according to the instructions in the text.
• Holes, cylinders, prisms, and other features are in proper alignment and in their proper relationship to each other.
• Hidden lines are omitted.
• Shading and dimensions (when required) are shown according to the text and instructions given.

related academic: (m1, m6, m8.9)

Standard 480101-32
The student will be able to understand and demonstrate the use of perspective drawings.

• Identify and use designated angles and positions for all axes, horizons, site points, vanishing points, ground lines, picture planes, and other construction lines.

• Circles are constructed as ellipses.
• Parallel lines are drawn as required in text instructions.
• Angles and inclined lines are constructed according to the instructions in the text.
• Holes, cylinders, prisms, and other features are in proper alignment and in their proper relationship to each other.
• Hidden lines are omitted.
• Shading and dimensions (when required) are shown according to the text and instructions given.

• Circles are constructed as ellipses.
• Parallel lines are drawn as required in text instructions.
• Angles and inclined lines are constructed according to the instructions in the text.
• Holes, cylinders, prisms, and other features are in proper alignment and in their proper relationship to each other.
• Hidden lines are omitted.
• Shading and dimensions (when required) are shown according to the text and instructions given.

  related academic: (m8.9)

Standard 480101-33
The student will be able to understand and demonstrate the basics of Geometric Dimensioning and Tolerancing (GD&T).

• Specify form tolerances e.g. Straightness, flatness, roundness (circularity), cylindricity, profile, angularity, parallelism, perpendicularity, and concentricity.

Standard 480101-34
The student will be able to understand and identify basic welding symbols.

Standard 480101-35
The student will be able to understand and demonstrate applied mathematics.

• Add, subtract, multiply, and divide whole numbers.
• Add, subtract, multiply, and divide fractions.
• Add, subtract, multiply, and divide decimals.

• Convert fractions to decimal equivalents.
• Convert decimal values to nearest fractional equivalent.
• Use decimal equivalent chart for conversions.

• Convert inch dimensions to metric.
• Convert metric dimensions to inch.
• Use metric/inch conversion chart.

• Solve for unknown angles.
• Solve for unknown sides.
• Calculate bolt hole patterns.

Standard 480101-36
The student will be able to understand and assemble working drawings.

• Draw all necessary views of each part.
• Draw only one part per sheet.
• Dimension parts as per ANSI Y 14.5 standards.
• Apply appropriate tolerances.
• Apply necessary notes, material specifications, symbols, and other data.
• Complete a parts list of the parts which include, parts number, manufacturer’s name, manufacturer’s stock number, material specs, quantity of each part, notes for assembly.
• Complete an assembly drawing showing the relationship the parts to each other.
• Include title block and border on each production drawing sheet.

Standard 480101-37
The student will be able to understand and identify manufacturing processes.