Project 03

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Project 03

  1. 1. qwertyuiopasdfghjklzxcvbnmqwertyui opasdfghjklzxcvbnmqwertyuiopasdfgh jklzxcvbnmqwertyuiopasdfghjklzxcvb nmqwertyuiopasdfghjklzxcvbnmqwer Project 03 tyuiopasdfghjklzxcvbnmqwertyuiopas Solid Modeling Assignment dfghjklzxcvbnmqwertyuiopasdfghjklzx 10/1/2009 Andrew Wise cvbnmqwertyuiopasdfghjklzxcvbnmq wertyuiopasdfghjklzxcvbnmqwertyuio pasdfghjklzxcvbnmqwertyuiopasdfghj klzxcvbnmqwertyuiopasdfghjklzxcvbn mqwertyuiopasdfghjklzxcvbnmqwerty uiopasdfghjklzxcvbnmqwertyuiopasdf ghjklzxcvbnmqwertyuiopasdfghjklzxc vbnmqwertyuiopasdfghjklzxcvbnmrty uiopasdfghjklzxcvbnmqwertyuiopasdf ghjklzxcvbnmqwertyuiopasdfghjklzxc
  2. 2. Contents 1 Introduction .......................................................................................................................................... 4 2 Problem Statement ............................................................................................................................... 4 3 Report ................................................................................................................................................... 4 3.1 Part A............................................................................................................................................. 4 3.1.1 Figure 1.................................................................................................................................. 5 3.2 Part B ............................................................................................................................................. 5 3.2.1 Figure 2.................................................................................................................................. 5 3.3 Part C ............................................................................................................................................. 6 3.3.1 Figure 3.................................................................................................................................. 6 3.4 Lens ............................................................................................................................................... 6 3.4.1 Figure 4.................................................................................................................................. 7 3.5 Microphone................................................................................................................................... 7 3.5.1 Figure 5.................................................................................................................................. 7 3.6 Earpiece......................................................................................................................................... 8 3.6.1 Figure 6.................................................................................................................................. 8 3.7 Antenna ......................................................................................................................................... 8 3.7.1 Figure 7.................................................................................................................................. 8 3.8 PC Board ........................................................................................................................................ 9 3.8.1 Figure 8.................................................................................................................................. 9 3.9 The Keypad.................................................................................................................................. 10 3.9.1 Figure 9................................................................................................................................ 10 3.10 Back Cover................................................................................................................................... 11 3.10.1 Figure 10 ............................................................................................................................. 11 3.11 Front Cover ................................................................................................................................. 12 3.11.1 Figure 11 ............................................................................................................................. 12 3.12 The Assembly Model ................................................................................................................... 13 3.12.1 Figure 12 ............................................................................................................................ 13 3.13 2D Assembly Drawing ................................................................................................................. 14 3.13.1 Figure 13 ............................................................................................................................. 14 4 Discussion............................................................................................................................................ 15 5 Conclusion ........................................................................................................................................... 15
  3. 3. 6 References .......................................................................................................................................... 15
  4. 4. 1 Introduction Project 03 is the most ambitious modeling assignment to date. The first simple modeling part requires a newfound mastery of the sweep, blend, and warp commands. The second part is another complex series of modeling tasks that culminates in an assembly model of an entire cell phone. The class is also tasked with a 2D drawing of our assembly drawing. 2 Problem Statement The task is to complete from the textbook Figure 7 on page 11-5, Figure 28 on 11-17, and Figure 9-14 using the toothpaste tutorial. Additional, the class is to complete pages 4-1 to 6-17 in the “getting Started with Pro Engineer Wildfire 3.0 on the class website. 3 Report 3.1 Part A Part A is made with an extrusion and a sweep. The sweep was new, but the book’s tutelage was stalwart. It was created much like the helical sweep from Project 02, with a user defined path and user defined cross-section. In this case, the cross-section was an I-beam.
  5. 5. 3.1.1 Figure 1 (A) (B) Figure 1(A) is a longitudinal view of the sweep; Figure 1(B) is shows the height. This command will be useful in modeling smooth objects. 3.2 Part B Part B is created using three sketches and the blend feature. The book was not as helpful this time. It took numerous attempts to successfully link the three sketches. 3.2.1 Figure 2 (A) (B) Figure2 (A) shows the depth and top contours of Part B; Figure 2(B) shows the bottom.
  6. 6. The steps for blends are view, but complicated sketching and temperamental inputs made this piece a hassle. 3.3 Part C Part C requires both a blend and a warp. However, the online tutorial offered a different method for the blend. The user can select blend, draw the sketches, and specify the distance between each sketch to successfully insert a blend. This was much easier from the class than the method offered book the book 3.3.1 Figure 3 (A) (B) Figure 3(A) depicts the blended aspects of Part C; Figure 3(B) shows the warp. The warp command is new. It is easy to use, but difficult to master. Essentially, the user defined something similar to a sine wave then manipulates the peaks and troughs to depress his/her model. This last part was imprecise. 3.4 Lens The Lens was the first part completed for the cell phone assembly. It was not complicated. It required only familiar techniques such as arc and extrusion.
  7. 7. 3.4.1 Figure 4 (A) (B) Figure 4(A) shows the lens; Figure 4(B) shows the lens from another angle To make the piece more interesting, the class added color to the lens. This is a simple matter done through the view menu. 3.5 Microphone The microphone was the next piece. It was a bit more complicated, but it still only require the basics like extrusion and cut. 3.5.1 Figure 5 (A) (B) Figure 5(A) shows the depressions in the mic; Figure 5(B) shows the hard edges.
  8. 8. 3.6 Earpiece The earpiece was also fairly simple. It required mostly the basic techniques. However the six holes were done via a pattern. While this technique gets easier and easier with every project, it is still not quite mundane. 3.6.1 Figure 6 (A) (B) Figure 6(A) is the earpiece; Figure 6(B) is the back side. Can the see chamfered edges? 3.7 Antenna The antenna was also a review of techniques learned earlier this year. Essentially, this part was a couple of sketches with a couple of revolutions. Nothing earth-shattering. 3.7.1 Figure 7 (A) (B) Figure 7(A) shows the antenna; Figure 7(B) shows the tip of the antenna.
  9. 9. 3.8 PC Board The PC Board was a little bit trickier than the other parts. The extrusion based on sketches was no different than the others and the holes have been done many times before, but we did add a datum plane to this model. Its purpose is to align the keypad in our assembly drawing. 3.8.1 Figure 8 (A) (B) Figure 8(A) is a view of the PC Board. The cross-hatching represents the datum plane; Figure 8(B) show the back side.
  10. 10. 3.9 The Keypad The keypad was not difficult. The blue color is added for emphasis on the assembly model. The techniques used were extrusion, round, pattern, and mirror. 3.9.1 Figure 9 (A) (B) Figure 9(A) is shows the keypad; Figure 9(B) shows its slender figure. We also used reference dimensions for the first time. Essentially it creates constrains with a CAD model instead of just in the sketches as we have done before. Instead selecting a numerical offset, one can constrain feature locations using other dimension and will change accordingly with said dimensions.
  11. 11. 3.10 Back Cover The back cover was the most difficult piece conceived for this phone. It required the creation of several model datum planes (easy in creation but confusing in application), countersunk and threaded holes, asymmetrical features, and uneven surfaces as references. On top of the new techniques, familiar but difficult techniques like draft and shell were also used. 3.10.1 Figure 10 (A) (B) Figure 10(A) is shows the cell and the creator’s name; Figure 10(B) shows the inside parts; Pictures don’t do this piece justice. This is piece probably took the class longer to complete than the rest of the pieces combined.
  12. 12. 3.11 Front Cover The front cover had some of the difficult feature used in the back cover, but it was not as complicated. The threaded holes were easier and the piece is more symmetrical as a whole. 3.11.1 Figure 11 (A) (B) Figure 11(A) shows the front of the front cover; Figure 11 (B) shows the inside part of the cover. The button holes were not actually done in the part file. They are a carryover from the assembly model. ProE cut the holes once the keypad was properly in place. The holes are made directly from the keypad.
  13. 13. 3.12 The Assembly Model All went pretty smoothly with the Assembly Model. It was a review of techniques learned for last week’s Project 02. 3.12.1 Figure 12 (A) (B) Figure 12(A) shows an exploded view of the cell phone; Figure 12(B) shows a non- exploded view. The color and amount of pieces are the only differences from last week. This model is more complex, but the color helps differentiate the different parts nicely.
  14. 14. 3.13 2D Assembly Drawing The 2D Drawing was also mostly a review from last week. We did however learn that all drawings need a title and how to let ProE do a Bill of Materials for the user. All the user needs to do is create a table and repeat region and ProE takes care of the rest. Balloons make finding each piece a snap. 3.13.1 Figure 13 Figure 14 shows my drawing. This is how folks on the floor would know how the parts go together. Experience made this 2D much easier than last time.
  15. 15. 4 Discussion No one thing in Project 03 really gave the class much trouble. The threaded holes were tricky and the class still is not sure why it couldn’t dimension to the axes of the screw posts, but we eventually worked it out. Project 03 was really more of a grind than anything. It was a lot mind-numbing work. The class estimates that this project took upwards of 15 hours on average. No one feature was extraordinarily difficult to conceive and model, but the whole is always greater than the sum of its parts. The one feature that left me stumped was the blend. The way our ProE 4.0 textbook instructed me to complete it didn’t work, perhaps more accurately, I couldn’t make it work. I tried everything and kept on getting the insipid error message about my “unclosed” figure. I thought my goose was cooked until the instructions for Part C showed an alternate blend method which seemed a lot easier. Again, there was no one part the class could not understand, just a lot of headaches and combinations that made for a slow go. The threaded holes also made Project 03 a time-consuming ordeal. The class could not get the radial dimension to work. Also, on some edges, the holes were crooked or upside down. Eventually, the class made it work, but it took a couple of hours at least. 5 Conclusion The class learned a lesson in discipline in Project 03. The techniques learn were almost trivial. The most important thing the class got out of this assignment was staying with a challenge. 6 References Toogood, Roger. Pro Engineer Wildfire 4.0. Edmonton, Alberta: ProCAD Books Ltd, 2006.

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