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U of U MEEN 4000 - MEEN 4000 Engineering Lab 2

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Department of Mechanical Engineering ME EN 4000 - Engineering Design I Engineering Lab 2 Assigned: Thursday, September 7, 2006 Due: Wednesday, September 13, 2006, 5PM, 2110 MEB Introduction This first lab reviews the basics of solid modeling: linear and rotational extrusions, mirrored cuts, bevels, rounds, and threaded holes. In also introduces the fundamentals of making drawings and what should be included on a drawing. Also see Task Create a solid model based on the attached drawing and a second part of your choice (preferably related to your project). Each drawing must have 3 orthogonal views and an isometric view and must include appropriate dimensions and tolerances. You will use the respective title block for SolidWorks and ProE provided by the TAs. Print out the two completed drawings and write your name on them. Please write a short statement on the back of each drawing describing how your part will be used in service and how it attaches/interfaces with other parts it will be used with. Hints The part to be modeled uses english dimensions - be sure to ensure units are consistent with this. Engineering drawings in Pro/ENGINEER (and SolidWorks) derive their dimensions directly from the part files – be sure to model all parts accordingly. • Symmetry is a powerful design principle - place datum planes according to part symmetry. • Minimize the number of dimensions by using symmetry as a constraint - this requires the placement of centerlines in the sketched sections. • Threaded holes of standard size are now available in Pro/ENGINEER, eliminating the need for drilling holes and placing cosmetic threads separately. • In order to obtain a dimension based on diameter rather than radius, first select the feature line, then the center line, and then the feature line again before placing a new dimension… or double click the arc or curve being dimensioned. • Keep your section sketches simple - it is better to have a large number of simple sections than a small number of complex sketches. Be sure to constrain your sketches in a way that will propagate properly if you change a dimension in a prior feature. CAD Tutorial 2 ProE and SolidWorks tutorials to learn assemblies and revolved parts, plus reference info for solidworks users to learn to animate assemblies that will be posted on the wiki (since the ProE users will cover this). ProE – There are 2 tutorials that you need to do this week. See the wiki for tips on these tutorials. • Go to http://www.ptc.com/products/tutorials/proewf3/newusers/index35711.htm which takes you to page 34 of the tutorial you started last week. You only need to complete pages 34-59. o Print out and hand in either a left or right view of the assembled engine. • Go to http://sharptechdesign.com:8888/Tutorials/ProE_Fundamentals_WF2/WF2_Lesson09.htm and complete this tutorial about revolves. You will need to download a file called bearing.prt.zip to complete this tutorial. This file can be found on the Lab2 wiki page. o Print out and hand in an isometric view of the completed bearing. Name:Group Name:ID #:Solid Works - There are 2 tutorials that you need to do this week. • Open Solid works and choose help->online tutorials. Complete the Assembly Mates tutorial. o Print out and hand in an isometric view of the complete universal joint assembly. • Open Solid Works and choose help->online tutorials. Start the Revolves and Sweeps tutorial and complete the candle stick revolve. You do not need to do the sweep portion of this tutorial. o Print out and hand in an isometric view of the candle stick. Time to complete Please also, go to the Lab2 wiki page and fill in how long it took you to complete the lab and tutorial (ProE and SolidWorks users please make your entries in the respective locations: http://mech.utah.edu/senior_design/06/index.php/Main/Lab2 )Note: You will need to put appropriate tolerances on these dimensions. Do not just copy the number of decimal places used in this


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U of U MEEN 4000 - MEEN 4000 Engineering Lab 2

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