IET 265.001
Three-Dimensional Modeling 
(Using SolidWorks)
Spring Quarter 2009

Class Website

End of the Quarter

Your quarter grades are posted at the link below.

I hope you had a productive class and learned not only how to approach modeling in 3D but how to apply your designs in desktop engineering applications.  Judging from some of the Final Projects I believe many in this class will be using SolidWorks and their associated programs frequently in the years to come.  When doing my own design work there is no choice but SolidWorks.  Good luck and send me an email sometime.
 
Your Final Project evaluations will be available by request, call or send me an email.

Click on the following links


Class  Assignments 
Information Instructions in txt format 
or images in jpg format.
Syllabus
in MS Word format
Class Schedule
in MS Excel format
CAD Lab Schedule
in MS Excel format
Grade Sheet
in MS Excel format
Student Resources
in HTML format with images
SolidWorks Models
SolidWorks files for downloading
Collection of outstanding designs

 

Drawing Guidance: 

The following are tips on getting a decent grade on your drawings for your design assignments.

  • The premise here is to make your drawings as neat and as readable as possible eliminating errors and ambiguity. 
    • Remember, in the real world, mistakes and ambiguity cost time and money.
      • In this class these mistakes will impact your grade.
    • Always present your best work, fix your own mistakes!
      • Double check your work before giving it to others. 
        • Check it on screen first
          • If any errors are found correct them before printing
        • Check the printed copy second
          • If any errors are found make the corrections then reprint.
      • If I find these mistakes and mark up your work it will affect your grade.
Generalized Grading Criteria:

The list below may be modified as the quarter progresses:

    Appearance:
    • Center your drawing views in the drawing area so that it fills the page without over crowding or leaving excess space.
      • Try to provide equal spacing between your drawing views and the top and bottom of the page as well as from the left and right.
        • This includes drawn objects as well as notes and dimensions.
        • The spacing from the drawing views and the border of the drawing should be about the same as the between each of the drawings views both horizontally and vertically.
    • Dimension your drawing views according to conventional standards
      • Move dimensions around to avoid "crowding"
      • Dimensions referencing the same structure should be grouped together.
      • Include the word "TYPICAL" following dimensions that can apply to similar items in the same view such as a series of holes, fillets or row and column offsets.
      • The isometric view should have no dimensions in it. 
    • Properly fill in your title block, with CAPITALS only.
    • Provide an appropriate sheet scale (a scale that applies to every view in your drawing):
      • Use standard scales such as
        • Metric: 1:1, 1:2, 1:5, 1:10 and similar multiples.
        • SAE: 1:1, 1:2 (6" = 1'-0"), 1:4 (3" = 1'-0"), 1:6 (2" = 1'-0"), 1:8 (1-1/2" = 1'-0"), 1:12 (1" = 1'-0"), 1:16 (3/4" = 1'-0") and similar multiples of 2,4 and 8.
        • Automatic scales added such as 1:3, 1:7. 1.5:1 and other non traditional scales need to be modified to standard scales.
      • Label each view with its own scale if it is different from the sheet scale.
      • The isometric view should have no scale label on it.
    • Provide a proper View Title, in CAPITALS with UNDERLINED TEXT.
      • Position the View Title centered under the drawing view.
      • The View Title should have the following information answered in the following order top to bottom, what is it? what view is it? what scale is it (if different from the sheet scale)? and any note references that apply to that view. 
      • Label each view with its own scale if it is different from the sheet scale.
    Avoid duplicate or redundant information, this leads to ambiguity.
Redos:

All work handed in for regrading must be stapled in front of the markup in order for it to be considered for re-evaluation.



Start Project No. 1 (Chapter step by step exercises).
 
 
 

To do this week:

Design Assignments include: 
 

  • Assignments 1.1a, 1.1i, 1.2a, 1.2f
Four drawings total.

These assignments are due on Friday April 2, on your new drawing template that we will create Thursday during class.  Print out on "A" sized paper (8.5" x 11"), landscape orientation.
 
 
Start the Project No. 1 models (Chapter step by step exercises).
 
 
 

Due this week:

Design Assignments include: 
 

  • Assignments 1.12, 1.14, send these via eDrawings as both a drawing and a part, allow measurements.
Project Assignments include:
Plate, Rod and Guide, print out the Plate and Rod and leave in box.

Tuesday's class will start with criteria on grading.  Bring your questions.
We will then proceed to updating our template files.  Updates to these files include:
 

  • Drawing (see example below)
      • Reduce the "Drawing No." font so that the drawing name will fit in the space allocated for it
      • Add information for "Drawn By" (initials) and "Drawn Date" ("Short Date") in the title block
      • Select the "Third Angle" projection (as opposed to the "First Angle" default) for drawing views
      • Add View Titles to each of the views.
      • Change the "Bent Leader" length.
  • Part 
      • Insert "Company Name" and "Description" information in the model properties off of the Pull Down Menu (File, Properties, Custom Tab).
    Start the Project models (Plate, Rod and Guide) as a series of step by step exercises in the book.  Print out drawings for the Plate and Rod only using your "A sized" drawing template.  We will save the Guide for the Project No. 3 drawing.  Leave these drawings in the box in the lab.

    Do Design Assignments 1.12 and 1.14, save as an eDrawing part and drawing, "allow measuring" and send via email by Friday at 5pm. 
     
     

    Due this week:

    Design Assignments due Friday by 5pm include: 
     

    • 3.7 on a B sized drawing template (one drawing).

    I will not be here for class on Tuesday, out sick.  Please work on Project's #2 and #3.  Use your class time effectively.  Stay and seek or give help to others.  Skip the section on Cosmos Express (pages 2-78 - 2-92).

    Also on Thursday I will demonstrate the assembly of the parts for the Guide Rod assembly if needed and start Project #3. 
     
     

    Due this week:

    Project Assignment:

    In class evaluation on Design Assignment 2.3 at the beginning of class on Tuesday.

    In class evaluation on the Motion Study for your gear design at the beginning of class on Thursday.


    Design Assignments due Friday by 5pm include: 
     

    • Gear design, 2 gears and mounting plate as parts on your A sized inch drawing  template.
    • Project #3 Drawing as described in the book.  Do not hand in anything on the sections for the Exploded Views or Bill of Materials.  Cover these sections while reading and modeling and plan on handing these in at a later date

    On Tuesday, an in class evaluation will be conducted for the Design Assignment 2.3.  For this evaluation, I will be looking for proper assembly techniques with points taken off for incomplete or missing mating references (as described in the book), missing parts and mating errors.  To get a good grade, build all of the parts properly (check previous week's markups) and follow the book covering every step described. 

    Tuesday's class will follow up with a demonstration on spur gear design.  Refer to the Student Resources link for instructions on this assignment.  Also check the Gradesheet and click on the tab at the bottom left of your window that states "Gears" for your design parameters.  Every student will have a different Design Assignment.  The values that you will need to get started include the Gear Ratio, Dimetral Pitch and the number of teeth on the Pinion Gear.  The gears and mounting plate will be modeled and handed in on Friday as Design Assignment drawings, 3 total (see below).  On Thursday, an in class evaluation on a motion study of these gears will be conducted similar to Tuesday's evaluation.  Check out the link at "Page of helpful class related links" from the "Student Resources Link" above for more general information on spur gear design. 



     

    Important this week:

    Test on Tuesday, pre evaluation modeling instructions follow below.  The examination portion is closed book, the modeling portion is open book.

    Grading criteria changes for recent assignments follow below.

    Design Assignments due Friday by 5pm include: 
     

    • 4.4 and 4.8 as an eDrawing drawing via email.
    YASWUG meeting on Thursday, Oxford Suites, see information at the top of the website.

     

    Changes to grading criteria on recent assignments:

    • Project 3
      • For those that missed the first week deadline you can hand in this Design Assignment by Friday May 1 for up to 90% of the original potential grade (up to 18 points in lieu of 70% or 14 points).  No redos for this second deadline.
      • For those that handed in this assignment but would like to improve your grade you can make the corrections noted on the markup and hand it back in for up to 100% of the original potential grade.
      • For those that handed in this assignment and received a good grade (16 points or better) will get an automatic 20% (or 4 points) added to your grade without any additional work.
    • In Class Evaluation for Design Assignment 2.3.  Re-evaluation on Tuesday May 5th. 
      • For those that missed this evaluation last Tuesday you can demonstrate this to me for up to 80% (or 16 points) of the original potential grade. 
      • For those that were present for the original evaluation you will get 10% (2 points) added to your grade. 
    • In Class Evaluation for the Gear Motion Study.  Re-evaluation on Tuesday May 5th. 
      • For those that missed this evaluation last Thursday you can demonstrate this to me for up to 80% (or 16 points) of the original potential grade. 
      • For those that were present for the original evaluation but did not have it done correctly you can demonstrate this to me for up to 90% (or 18 points) of the original potential grade.
      • For those that were present for the original evaluation and got a full grade (16 points or more) you will get 20% (4 points) added to your grade.


    Test on Tuesday, details for the pre-evaluation model follow below.

    The model portion of the test will be a garden cart.  Yes, a glamorous, sporty, to be envied by all type of Garden Cart.  Units in inches to 3 digits after the decimal.  All parts are plain carbon steel.  Prior to the test you should build the following parts and assembly (or you will not have enough time on Tuesday):

    Cart Side and Floor.
    Sketch the following on the Front Plane before extruding it 43.731 inches.  The side is 30 inches at its maximum minus the top lips and the height is 12 inches at its maximum:

    More notes on the above sketch: The Origin is on the exterior line, the fillet radius on the bottom corners are measured from the outside, the fillet radius on the upper lip is on the inside, the upper lip is 1.50" from the inside of the cart to the end (use the offset sketch entity).  Use plain carbon steel for material and find the thickness of 10 gauge sheet steel for the thickness.  The result should similar to the image below:

    Cart Floor Support, Side.
    Sketch the following on the Front Plane before extruding it 44 inches. 

    More notes on the above sketch: Start with a Center Rectangle with the above dimensions, fillet the edges as shown, extrude.  The result should similar to the image below:

    Cart Floor Support, Center.
    The sketch for the floor support in the center is similar to the above but 64 inches long.  There is a hole cut in the front for the Hitch (centered with the Right Plane). 

    Cart Hitch Mount.
    Sketch the following on the Right Plane.  Start with a construction line with the dimensions and fillets as shown.  Offset this line 1/2 the distance of 8 gauge sheet steel (look this up) on both sides.  Extrude it 2 inches.  Place 2 3/4 inch feature fillets on it and a hole in a position similar to the one sketched for the floor support.

    The result should look similar to the image below:

    Cart Assembly:
    The Cart Assembly (so far) will look similar to the image below.  Part colors are required and of your choice.  The front and rear panels of the cart will be constructed in class as a class exercise.  The wheel mount will be built on your own during the evaluation.  Extra credit is offered for items or features added that reduce sharp edges on the top lip of the Cart Side and Floor piece. 

    This portion of the test will require a drawing of the Wheel Mount and an in class evaluation of your assembly.
     
     
    Due this week:

    Re-evaluations for the two In Class Evaluations for the Gear motion Study and the Assembly from Design Assignment 2.3 according to the criteria listed in the Week 5 section above. 

    Design Assignments due Friday by 5pm include: 
     

    • 4.9 as an eDrawing drawing via email.
    • Project #4 as a printed "B" sized drawing on two sheets.  The Battery and Battery Plate on one sheet and the Lens and Bulb on the second sheet.  Skip the part on Mold Tools.
    Extra Credit Assignments due Friday by 5pm may include: 
    • PhotoWorks rendering of all or any combination of the following: cup, challis, vase and tray using revolved features.  Send via email as an eDrawing drawing and jpg image.

    Tuesday, we will:

    • Briefly cover the recent examination and go over the items that will be on the next examination.
    • Re evaluate the two In Class Evaluations for the Gear Motion Study and the assembly from Design Assignment 2.3 according to the criteria listed in the Week 5 section above.
    • If time permits start Project 4 and extra credit assignments.
      • The extra credit includes rendering an image in PhotoWorks of your design of all or any combination of the following: a cup, challis, vase and or a tray or similar objects using Revolve Features as described in this project.  Four maximum.  You will send to me an "A" sized eDrawing drawing with dimensions and a rendering of the item in PhotoWorks as a JPG file.  Save the JPG file with the highest resolution for more credit (don't send a postage stamp sized image).  The more creativity and effort the more points.
    Thursday, we will:
    • Finish Project 4.
     
    Due this week:

    Design Assignments due Friday by 5pm include: 
     

    • 4.6 and 4.7 as a printed drawing in the box.  Apply GD&T as described in class on Tuesday. 
    • Design a Pin with tolerancing on it to fit both Design Assignments.
    • 3 drawing total.
    Final Project Abstract due, one page.  Refer to the Student Resources link above for additional information.

    Tuesday

    • We will briefly cover the Final Project and abstract due at the end of the week.  Additional information can be found at the Student Resources link above.
    • We will cover a lecture on Geometric Dimensioning and Tolerancing (GD&T).  This is the application of symbology and text to describe tolerances on features other than just length that we have been using up to now.  For example, these tolerances may be: perpendicularity of a pin to fit in a slot, parallelism of the sides of the pin along its length, location tolerance of the axis of the pin and so forth.  The slot will have similar tolerances to ensure that the item with the slot at its Least Material Condition (LMC) will accommodate the Pin at its Most Material Condition (MMC).  Additional information, via a section in a text book, can be found at the Student Resources link above. 
    • If there is any time we will work on the Design Assignments or Project No. 5.
    Thursday
    • Hand in your drawings per the following instructions:
      • By Friday at 5pm.
      • Printed on A sized inch template
      • In the box
      • Units in inches to a precision of 0.123
        • 4.6
          • Make the front virtual plane datum surface A
          • Make the top virtual plane datum surface B
          • Make the right virtual plane datum surface C
          • Apply a bilateral tolerance on the circle that defines the cylindrical cut for the 1" hole to be between 1.000" and 1.003"
          • Make the position of the cylindrical cut of the 1" hole to have a geometric tolerance of 0.002" referencing  Datum B and Datum C at the most material condition. 
          • Make the position of the cylindrical cut of the 1" hole to have a geometric tolerance of 0.002" that is perpendicular to Datum A regardless of feature size. 
          • Make the back surface of the block to have a flatness tolerance of 0.001" to Datum A regardless of feature size. 
        • 4.7
          • Make the top virtual plane datum surface A
          • Make the front virtual plane datum surface B
          • Make the right virtual plane datum surface C
          • Apply a tolerance on the circle that defines the cylindrical cut for the 1" hole to be between 1.000" and 1.003"
          • Make the position of the axis for the cylindrical cut of the 1" hole to have a geometric tolerance that is parallel to Datum A and Datum C at the most material condition with a tolerance of 0.002". 
          • Make the inside surface of the back tab, as seen in the top view, parallel to Datum B with a tolerance of 0.002" at the most material condition. 
        • Pin
          • Make the surface on the bottom of the head of the Pin Datum A
          • Make the cylindrical circular extrusion of the pin from the head circular with a tolerance of 0.02"
          • Apply a tolerance on the circle that defines the cylindrical extrusion of the 1" Pin to be between 0.998" and 0.992"
          • Make the cylindrical circular extrusion of the pin from the head perpendicular to Datum A with a tolerance of 0.003" at the most material condition.
     
    Due this week:

    Design Assignments due Friday by 5pm include: 
     

    • Project #3, Exploded View and Bill of Materials (BOM)
      • Exploded view, 2 views on B sized paper, exploded with paths and collapsed assembly.
      • For the BOM, exploded assembly with paths, balloons and BOM on B sized paper. 
      •  
    • Project #5, place your parts on B sized drawings in a similar manner as Project #4.  In class evaluation on Thursday for the Flashlight Assembly.
    Final Project Abstract revisions if any.

    Project #5 Drawings, ignore the section in Project #5 on eDrawings.

    Flashlight Part Drawings, include the O-Ring, Switch and Lens Cap

    • Parts on B sized paper printed in the lab
    • Units in Inches, precision to 3 decimals
    • Hidden Lines Visible in the appropriate views
    • The drawing may look similar to the following image, create additional views and add additional dimensional text if it enhances the information.

     

    Flashlight Housing Drawing, include the Flashlight only

    • Parts on B sized paper printed in the lab
    • Units in Inches, precision to 3 decimals
    • Provide a detail of the threads from the Top View
    • Hidden Lines Visible in the appropriate views
    • The drawing may look similar to the following image, create additional views and add additional dimensional text if it enhances the information.

     
     
    The model portion of the examination to be evaluated on Tuesday follow below.

    From the first examination you should have the following parts and an assembly as listed below: 
    Cart Side and Floor
    Cart Floor Support, Side
    Cart Floor Support, Center
    Cart Hitch Mount
    Wheel Mount

    Cart Assembly

    Before getting started on the new parts listed below fix any problems that you may have had with the parts and/or assembly from the last examination.

    For this examination you will build the following parts:
    Wheel
    Tire
    Wheel Tire Assembly
    Cart Axle
    Cart Wheel Spacer
    Cart Axle Hub Cap
    Cart Front Support

    Wheel
    Sketch on the front plane the sketch below.  Use the Revolve Boss/Base feature.  Material is stainless, AISI 304.  Hint, draw the two centerlines as shown.  Sketch the circle on the top representing the seat for the tire.  Sketch the bottom line on the axis then the side for the hub, then a 3 point arc from the top of the side for the hub with the other end tangent to the tire seat circle.  Mirror the items on one side to the other, trim out the top portion of the tire seat circle.  Using the horizontal centerline revolve the sketch.  When done with the revolve feature cut a 0.75" hole in the center for the axle.

    Tire
    Sketch on the front plane the sketch below.  Use the Revolve Boss/Base feature.   Material is Rubber.  Extra credit for tire treads (sketch cuts in the sketch shown below and/or sketch a pattern on a plane, use the Offset from Surface option for an Extrude Cut then apply a Circular Pattern).

    Wheel Tire Assembly
    Insert both the Wheel and Tire to the Origin in the assembly. 

    Cart Axle
    Sketch on the right plane, an axle 0.75" in diameter and 40 inches long (Mid Plane Extrusion).  Material is Plain Carbon Steel.

    Cart Wheel Spacer
    This item fits between the Wheel and the Wheel Mount.  Design this part so that the wheel does not interfere with the Cart.

    Cart Axle Hub Cap
    This item fits on the end of the axle.  Design this part using a sketch and the Revolved Boss Base feature.

    Cart Front Support
    This item will be designed in class using the Loft Feature.

    More details will follow before class on Tuesday.



    Due this week:

    Final drawings of your Final Project design printed on A or B sized sheets in the lab.

    We will go over the test briefly on Tuesday and will work on the Final Project both on Tuesday and Thursday.
     
    Final Project presentations will be during the Final examination time slot set aside for our class on Tuesday at 6pm.  For those that want to start early I will be in the lab at 5pm if the lab is available.  Please plan on staying for all of the presentations.

    The procedure for your presentation will be the following:
     

    • Prior to the class starting, each student will load their folder of presentation materials and their SolidWorks files of their project on the desktop of the instructor's computer. 
      • Your folder needs to have your name on it so I can download it and take it home for grading. 
      • Once the files are loaded on the instructor's computer we will start the presentations.
    • Presentations
      • For those that are presenting during the 5 o'clock hour we will take a break at about 5:50 so that the rest of the class can load their folders onto the instructor's computer. 
      • A presentation schedule is available at the Student Resource link above.
    • For additional information on the Final Project visit the links at the Student Resources link above.

    DESIGN GALLERY

    The following images display designs that I believe show 
    extraordinary effort and qualities.