Computer-Aided-Engineering Design
MEEG 202
Spring,
2008
Design Project
Teams of nominally four people will use the engineering-design process to address a generic need. The teams will be required to define an engineering problem and develop preliminary engineering specifications in order to allow the team to compare some initial concept ideas and decide on which concept has the best potential.
There are four milestones associated with the project:
- teams will be assigned during class on February 14 (team assignment);
- selection of the topic, by 11:59pm - February 21, undergraduate TA's monitor:
- email at least top five choice to undergraduate TA's,
- choices can be found online,
- first come - first served,
- team will be directly notified of their design project;
- confidential Peer Evaluation form, online - due before 5pm on March 27;
- design Report due, by start of class - March 27.
Design project requirements:
- 95% = each team submits by the due date a team design report:
- 5% = cover page with team members names and specific topic; (this 5% also includes overall quality - such as: page numbers, neatness, spelling, grammar, etc.);
- 20% = validated derivation of customers, needs, constraints to define the engineering problem;
- 20% = validated derivation of specifications: metrics plus target values;
- 20% = clearly documented background research and benchmarking to justify derivations;
- 20% = at least one unique concept per team member with:
- engineering sketch of each concept,
- discussion of engineering behind performance as regards specifications,
this 20% is to be done by the person responsible for the concept and will be evaluated for that person;
- 10% = comparison of concepts via the specifications with justification for choosing one as best path forward;
- 5% = each individual submits by the due date a confidential peer evaluation.
Manufacturing Project
Two-person teams will be required to produce a two component assembly that demonstrates an intererence fit. There are five milestones associated with the project:
- each student must complete the annual safety demo and on-line quiz on shop safety prior to working in the student shop;
- teams will be assigned by class time on March 6;
- create two drawing that allow you to demonstrate an interference fit:
- two unique parts are required that can be made using both the mill and the lathe, and
- each person produces one drawing;
preliminary sketches required (for initial comment/feedback) at start of class, March 20;
- re-worked sketches in working drawing package for manufacturing project required at start of class, April 8;
- finally, using the student-shop machines, fabricate each part and assemble them
- team members are required to fabricate the component drawn by their partner
(peer evaluations are not required, but if anyone wishes to fill one out, it must be submitted directly to me no later than May 15).
For background, remember to check the Student Shop web page for information from Mr. Beard's lecture.
Each team can use up to a 6" by 6" piece of 0.25" or 0.38" or 0.50" thick aluminum plate,
and up to 6" of 0.25" or 0.38" or 0.50" round aluminum stock which will be provided through the Student Shop.
Two-person project teams will be listed online by March 6 (because there are an odd number of students in the class, there will be a single three-person team: that team needs to talk to me).
The sketches (due March 20 - at the start of class) will define the expected size and shape of your pieces.
Each team will hand in at least three sketches (all 1:1, can do either by hand and/or with SolidWorks):
- all parts together (isometric view - put both team member's names on sketch),
- each individual part (front view - person responsible for drawing's name ONLY on sketch).
The drawings (due April 8 - at the start of class) will define the actual size and shape of your pieces.
Each team will hand in at least three drawings (all 1:1, with SolidWorks: engineering drawing using UD-required studentshop format):
- all parts together (isometric view - put both team member's names on drawing - NO DIMENSIONS),
- each individual part (standard multiview drawing - person responsible for drawing's name ONLY on drawing - with SIZES [as described in lecture]).
The parts and a report (assembled parts due May 15 to Mr. Beard, report due to me at the start of class on May 20: class May 20 will be in 104 Spencer not Willard Hall) will demonstrate and summarize your effort. The report will contain in the following order:
- a cover page with your names and an isometric picture of all parts together;
- 20% = a complete drawing package that includes the individual part drawings linked to an assembly drawing;
drawings must conform to standard drawing & dimensioning practices with tolerances as developed for the fit,
and include a bill of materials; the bill of materials is as in Figure 10.8 of your text: to the left of the title
block - however, just include columns for part number and/or description (just be consistent!) and quantity.
[Remember - each part will have the name of the person who made the drawing in the
"DRAWN BY" box; however, it is the other person who will actually manufacture that part];
[Please turn in your marked-up March 20th-report drawing package with your final drawing package.]
- 20% = process used to manufacture assembly that includes an explanation of the steps used to create each part
and details regarding the assembly of the parts - this description should allow someone else to make an identical
assembly using the same methods;
- 20% = a chart summarizes the ACTUAL dimensions of each manufactured part (include mean and standard deviations as
well as maximum and minimum values for each dimension - at least five measurements);
- 20% = discussion of the project results that
- identifies any differences between the drawings in this package and those from April 8 - with reasons for any differences,
- compares the drawings to the parts through referencing the chart with actual measurements, and
- recommends and justifies any changes to the part, manufacturing and/or assembly process for future production.
- The final 20% will be the overall report written quality and presentation including referencing & approriately labeling all figures and charts.
Two-person teams that do a good job of the project will achieve a maximum of 85 points. However, any student can do a very good job in a two-person team; for example, by being very creative in the design or being very conscientious about working in the student shop. Therefore, it is possible for a student on a two-person team to achieve 90 points for the Manufacturing Project.
To have the possibility of more than 90 points, two two-person teams must join together to form a larger team. Each two-person team is still responsible for designing two parts that go together, but those will now be sub-assemblies of a larger assembly. Other considerations:
- the overall four-component assembly must be funcional; that is, not simply a 'paperweight,'
- there must be at least one interference fit, but other connections can be through standard bolts, screws,
- there must, overall, be at least one mill and one lathe component.
For the final report, in addition to the requirements above for each two-person team, there will be an overall assembly drawing showing the two sub-assemblies.
Your decision as to whether to remain a two-person team or to partner with another two-person team (of mutual agreement) to make a bigger team must be made by the March 20th deadline for sketches and will simply be noted in that you would hand in all the manufacturing sketches together.
Page Last Updated:
18 April 2008