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Engineering Design Project I

by: Buck Ankunding

Engineering Design Project I CMPE 123

Buck Ankunding
GPA 3.56


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This 2 page Class Notes was uploaded by Buck Ankunding on Monday September 7, 2015. The Class Notes belongs to CMPE 123 at University of California - Santa Cruz taught by Staff in Fall. Since its upload, it has received 58 views. For similar materials see /class/182228/cmpe-123-university-of-california-santa-cruz in Computer Engineering at University of California - Santa Cruz.

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Date Created: 09/07/15
IN YEARS PAST WHILE TEACHING IN the graduate program at a southern uni versity there seemed to be a standard approach to the start of each semester The students would immediately ask What are the important equations for this classquot The question might also be along the lines What are the important topics we should study Of course the stock answer could have been Everything I teach you is important but that might have been a bit pretentious on my part I would begin my explanation to the class by stating that there would not be any tests The grade for the semester would be derived from their effort on a term paper which almost always prompted a reduction in class size the second night After that I would write a simple equation on the board noting to the stu dents that it would be the most important thing they could take from the class IIIS 1 You could almost hear the wheels begin to churn 31 S Iqu IIOhI are encjmeezri1 cjoal As I began my lecture I told the young engineering students that most of them would be employed in industry and that for the most part they would be expected to solve problems The problems could range from the mun dane and simple to something exotic something out of this world something not yet invented What would be expected of them was to provide solu tions to problems thus in the equation S equals solutions The success of each one of the students would depend on RAYMOND E FLOYD how well they solved the problems given them The solution like the prob lems could range from the simple to the complex The most important thing was to remember to look at the prob lem from different perspectives to make sure the solution offered represented CYBEFISTOCK DIGITAL the best technical answer for the most costeffective investment Another casu al reminder was that the most elegant solution may not be the best always try for simplicity if possible Simple solu tions can frequently provide success in terms of cost time and effect Having given the introduction and the goal of the class to formulate solu tions I would then set the parameters for the student s class project any product assembly using robot assembly techniques They were to describe the product and the general conditions of parts presentation limiting factors and any other problems expected in the implementation of their project in the real world While they could work alone I suggested teams of two or 0278 6648062000 2006 IEEE three people which is another way of preparing them to work in teams when they move into industry At that point I introduced them to the automation project to be discussed as part of the Class and the first I Imagination Proceff Mk oFF with IM cI jIn A I39IOh To begin any project engineers must look at the requirements and specifications and let their imagination begin to explore possible solu tions The solution can be built on past experi ence as long as that experience is built on ten years experiencequot not one year of experi ence ten timesquot The engineer needs to break out of the mold of That s the way we have always done it that syndrome that says It s too risky you ll never succeed Stretch the imagination break out of the paradigm that keeps so many frozen into the narrow path of mediocrity Of course this is not meant to imply that only new thoughts and new approaches are to be used There are many tools and approaches that have stood the test of time For example shaker bowls a vibrating parts orienta tion and feeding device have been used for years as part orientation and presentation devices in automated man ufacturing lines However would it be cheaper and just as effective to have the supplier of the part provide the part in sticks or tapefed rolls already oriented and ready for quick presentation Another aspect of using the imagination is that one doesn t have to focus on the tooling to be used in the final solution Why not look at the product or pro posed product to see if part changes could be made to facilitate automated IEEE POTENTIALS assembly Where there are screws could pop fit or press fit anchors serve as well This provides not only an easi er method for assembly but also cuts down on parts cost feeders and pre sentation methods It is the imagination that has driven mankind to many won derful successes Students should use it to develop product solutions One final thought on imagination as it applies to engineering Imagination can not be taught but engineers can be taught to think outside the boxquot they can be taught to examine the problem being worked outside the paradigm of the problem itself That reminds me of the story about an engineering problem that happened a number of years ago A new power plant was being built and the contractor had finished the area scheduled to house generators that were very large When it came time to move the generators into place much to the contractor s chagrin the cranes used to place the generators couldn t fit through the opening to place the gener ator bases over the preset bolts in the concrete oor A number of approaches were suggested ranging from cutting off the bolts and sliding the units in and of course then drilling and anchoring the units in place to remov ing the roof and dropping the units into place to using rollers to roll the units into place the bolts on the oor how ever halted that discussion The final solution suggested by an engineer using his it may have been a her imagina tion ood the oor with water cover ing the height of the bolts and freeze it The generators were slid into place and as the water thawed gently low ered onto the bolts Simple but outside the box Setoncl I Come ih l39o play Having developed the general con cept or approach to the project the stu dents were ready to begin the design of the workstation and it was time to introduce them to the second I in the equation Innovation In the process of designing an automation center or tool the engineer may find that the pro posed solution is too expensive too large too pick another superlative and an alternative must be found The engineer must look at the product and the proposed solution and come up with alternatives new innovative ways to address the problem at hand One project I worked on had four bolts coming through the bottom of the SEPTEMBEROCTOBER 2006 mounting plate into tapped holes to fas ten the unit onto the base The pro posed solutions had Vibratory feeders nut drivers and fixtures for presentation right side up sideways and even upside down None of the proposed solutions were particularly elegant or cost effective In this particular project it was decided to look at the case itself to see if a press fitsnap fit solution might be applicable Where the four bolts came through the mold was redesigned to have four plastic bolts molded in place with a slot in each bolt near the case bottom to use as a retainer The part being mounted into the base had the tapped holes removed and a simple opening stamped out which fit down over the plastic bolts on the base As the part was pressed into place the plastic bolts moved through the four holes and when it bottomed out snap the unit was held firmly in place a simple yet elegant solution Innovation provides a different perspec tive another way at looking at what needs to be done without letting all man ner of restrictions prevent the engineer from reaching a satisfactory solution Difference between lM A jihi l th and Innova f39lo Sometimes my students would note that imagination and innovation seemed to be similar in approach to product solutions I would tell them they were correct in their view but that I could see a fine line of difference between the two when I employed the words From my perspective imagination can provide solutions and approaches using technology not yet in existence some discovery must yet happen If one looks at the authors of 50 years ago how much of the science fiction then is now reality Theirs was a world of pure imagination that is now found daily in our world of reality Innovation on the other hand concerns the adaptation of existing materials to the problem solu tion albeit in a manner not previously considered In many projects imagination and innovation are enough to provide the needed solution There are others where the solution just can t be arrived at with existing technology parts and devices Another approach is needed thus the final I Inventi0n Invention is something new untried not yet fully developed more a concept than some thing concrete yet offering an approach to the solution needed Can it be done Can technology support the concept All these questions need to be answered in the process of moving the inventive concept from the drawing board to the manufacturing oor One also must not forget the process of pro tecting intellectual property rights and filing the invention application with the United States Patent and Trademark Office or the equivalent patenting office in other countries Lan I If The harden Invention is the most difficult of the 1 s to implement It cannot be sched uled or looked up in a textbook The answer may be hidden or simply not obtainable given the state of technolo gy at the time Invention frequently calls upon the first two I s requiring both imagination and innovation to arrive at some new concept approach or method It must also be recognized that invention carries with it the greatest risk of failure it hasn t yet been tried and proven to be a success As a result the process of generating a solution may be slowed considerably if the solu tion depends on successfully inventing a critical part or process It has been said that invention is difficult to sched ule so don t depend on it A number of years ago I had the opportunity to work on a project that was attempting to automate the han dling of silicon wafers in a clean room in this case a Class 10 clean room no more than ten onemicron particles per cubic meter of air It was decided that a new robot would be designed for operation in the clean room environ ment which in itself was a challenge All of the moving mechanical joints dri ves and other moving parts had to be encased in shrouds to prevent any metal or dust escaping into the clean space around the wafers The handling of the wafer itself presented the greatest challenge as mechanical claws could not be used over the surface or used to grasp the edges of the wafer for fear of chipping or dislodging particles in the process The final solution an inven tion was a metal claw that moved air clean air across the surface of the wafer lifting the wafer in a Bernoulli effect with nothing coming into contact with the wafer I always found it interesting to watch the students wrestle with the three con cepts of Imagination Innovation and Invention as they worked through the


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