Pulse Motor Project

This is designed for a person working on a project for 4 weeks as part of a 3 credit class.

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Week1 Narrative
''I drafted the initial dimensions of the frame and rotor. I researched sketchup, 3d printing, pressure fit tolerances, and makerware so that I could design and print a school. This is because finding a spool of the correct size in a local store or on the internet proved difficult. I tried to print one spool and the print failed. I redesigned the print procedure and successfully printed one spool. ''

Week2 Narrative
''This week I spent time researching electrical schematic symbols. Different switching mechanisms were explored, from hall effect sensors to regular old mechanical switches. They will be used to switch between the charging and discharging circuits. I found the optimal tool for cutting lexan happened to be a 3 fluted tungsten routing bit at 30krpm or greater. Freddy purchased a routing bit from the hardware store and tested it on a scrap piece of plexiglass. It was found to be a difficult task. As a team we decided to use all threaded rods as the hardware for the frame. The rods would be used to secure the rotor and the sides. After spending 3 days trying to locate a shaft of the right size in the local area proved difficult. Much time was was spent with Freddy and Dave in the lab to figure out how to affix the rotor to a bearing that will then be sandwiched in between the 3d printed wire spools that are mounted on the frame. Over the weekend we were all to think of a way to secure the rotor to the bearing. I spent my time designing a bolt in sketchup that would hold the rotor in place. the designed proved to have rescaling issues what needs to be worked out. ''

Week3 Narrative
''Freddy took the initiative and suggested mocking up the frame and rotor using scrap material around the lab. We rough cut the pieces. I cut 7" lengths of all threaded rod and found nuts to connect to the frame. We were short a few nuts and I placed an order through the school for those nuts. I drilled a 3/8" hole in the center of all 4 printed spools in preparation of them being wound with wire. Dave devised a plan of using a combination of pvc pipes and altering the end of the pipe to pressure fit the bearing in the end of the pipe. Dave, Freddy, and I worked together to wind the first wire with 500turns of wire.''

Week4 Narrative
''I studied more electrical theory over the weekend. In the lab, Dave and I explored other alternatives to our current spool winding system. That day we wound 4 spools with 500 turns of wire. As a team, we presented our Lexan cutting issue, and determined that Medium Density Fiber board would be a nice substitute because it is comparable to lexan in this particular application. We plan to more forward with building this next week, so long as we can get the hardware assembled and 6 more spools printed. I am going to shop for MDF board this weekend. So we we can begin the assembly next week''