Why:Learning Objectives:Performance Criteria:Resources in addition to Previous Hands-On Web Sites, Other Students, and Instructor:Plan:METBD 110 Hands-On 2 Modeling Strategy Why: Most companies still use two-dimensional drawings to manufacture parts. Visualizing a 2-dimensional object 3-dimensionally and vice-versus is difficult for the average engineering student. The good news is with practice visualization skills can be improved. There are also tips and tricks one can learn. One tip is to practice looking at the object feature by feature. Learning this method will also make the transition to solid modeling, using software such as Pro/ENGINEER, easier. In this activity, you will use a Modeling Strategy form to help visual the object 2-dimensionally. Learning Objectives: • Be able to identify the different features of an object. • Start the Pro/ENGINEER software and open a file from the courseware data disk. • Rotate a part in Pro/E. • Understand the difference between an object line and a hidden line and when to use them. Performance Criteria: • Properly fill out a modeling strategy form for each object. Resources in addition to Previous Hands-On Web Sites, Other Students, and Instructor: • Example Modeling Strategy Form (posted in Angel – Handouts folder) • Dimensioning Module, Lesson 1 • Reading assignments Plan: 1. Read the web pages listed above. Keep a printed copy of the documents in your notebook. 2. Access the Pro_E courseware datadisk. (Use Accessing Courseware Data Disk web link.) 3. Start Pro/ENGINEER (Use Starting Pro/ENGINEER web link.) 4. While waiting for Pro/E to load, rotate the object your instructor handed out until you are looking perpendicular to the front view. i. The front view of the object should be the most descriptive view (side) with the least amount of hidden lines. 5. Set your working directory to: PRO_E on ‘PSBDFILESRVR’ (V:)\METBD_110\Orthographic\ (Use Setting the Working Directory web page.) 6. Open the part file named ‘Model_01’. (Use Opening Pre-Existing Files web link) 7. Complete a modeling strategy form for ‘Model_01’. a. Sketch Plane: i. Verbally describe the most descriptive feature (shape) of the object. 01. Remember the most descriptive feature is the largest shape of the same thickness. For example, the overall shape of the object may look like a capital H, I, L, T, U, etc. 02. All portions of the shape being sketched must be extruded the same distance. ii. Compare it to ‘Model_01’s front view. Are they the same? How about the right side? iii. Decide which plane (horizontal, frontal or profile) or surface of the object, you will sketch the most descriptive shape of the feature on. Write this answer on the modeling strategy form. b. Sketch the 2-Dimensional Shape of feature on the modeling strategy form. The sketch does not need to be to scale, but must be proportional. c. Add the 2-Dimensional Size of the feature with dimensions following Design Intent (DI) i. Write design intent (DI) for the feature under the sketch. I.e., for Model_01: Material is important. ii. Add dimensions for this feature. At this time, the actual numerical values are not necessary – just placement of dimensions. d. Extrusion Distance of the feature, i.e., .38” deep. i. Sketch what the object would look like after it has been extruded and add the third dimension. e. Repeat steps for each feature. 8. Repeat step 7 for Model 02 and Model 03. (Use a new Modeling Strategy Form for each problem.) a. DI (Design Intent) for Model 02: Size of the notch is important. Size of the material around the slot is important. b. DI for Model 03: Material is important. Pad is located from the back left corner. 9. Exit Pro/E without saving the files.9/9/03 110-hands-on-2.doc 1 of 2-hands-on-2.doc 2 of 2 9/9/03 110MODELING STRATEGY FORM FOR MULTI-VIEWS Name ____________________________ Section _____ Problem _______________ Main Feature 2nd Feature 3rd Feature 4th Feature Sketch Plane (Horizontal, Frontal, Profile, or existing surface) 2-Dimensional Shape of Feature With Dimensions Following Design Intent (DI) Extrusion