Group 14 - Computer Hard Drive - 2
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Revision as of 23:07, 4 December 2008
Contents |
Executive Summary
For this project, we were assigned with the dissection of a hard drive. For the dissection, we had to disassemble, analyze, and then reassemble all of the components of the hard drive. We were completely successful in accomplishing all of these tasks.
Introduction
A hard drive is a Seagate Medalist hard drive. It has 4303 MB of capacity and spins at 5400 RPM. Our group consists of Daniel Simich, the group leader, Evangeline Rauch, Emmanuel Albert, Nathan Getze, and Lindsey Garay. Daniel modeled the hard drive in Autodesk Inventor, Lindsey did the presentation and compiled the parts list and disassembly procedure, Nathan analyzed how the product worked and all of the engineering models that could have been used, Emmanuel analyzed some design changes that could be achieved and also some manufacturing changes that could be made, and Evangeline.
Before Disassembly
Before disassembly, Daniel took the hard drive home and installed it onto a computer. The hard drive spun up and data read/write was not tested. When the hard drive spun up, it emitted a high pitch squeal, probably due to its age/lack of use. We estimated that the hard drive had about 50 components.
Disassembly Procedure
To simplify this page, we combined disassembly procedure, part table, and design changes into one table. Each part was taken off in the order that it is listed and any design change is listed next to the part.
| Part # | Part Name | Quantity | Purpose | Material and Reason for Choice of Material | Manufacturing Process | Tools Used for Removal | Ease of Removal (1-5, 1-easiest, 5-hardest) | Changes and/or Improvements | Reasons for the way it looks | CAD Model |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Screw | 4 | hold bracket in place | steel: durable, cheap | extrusion and machining | philips-head screwdriver | 1 | |||
| 2 | bracket/casing | 1 | cover, ventilation, easy attachment to computer | steel: durable, cheap | n/a | 1 | the overall shape of the hard drive conveniently fit into a computer | |||
| 3 | Screw | 4 | hold on first circuit board | steel: durable, cheap | extrusion and machining | torque wrench T8 | 2-difficult to find the right tool | Most likely this type of screw to prevent most people from taking it apart | ||
| 4 | circuit board | 1 | translate data from computer onto the hard drive | silicone | machining | n/a | 1 | |||
| 5 | anti-static material | 1 | prevent static from effecting the function of the hard drive | n/a | 1 | this was shaped to cover the entire inside of the hard drive | ||||
| 6 | foil | 1 | hold cap on hard drive | aluminum | sheet metal forming | n/a | 1 | could be made reusable so that the hard drive could be reassembled without needing new material | ||
| 7 | hard drive cap | 1 | enclose hard drive | steel: durable, cheap | n/a | 1 | ||||
| 8 | screw | 1-in center | hold on mounting bracket | steel: durable, cheap | extrusion and machining | torque wrench | 1 | |||
| 9 | screw | 1-on arm | hold on mounting bracket | steel: durable, cheap | extrusion and machining | torque wrench | 1 | |||
| 10 | Screw | 2-on outside | hold on mounting bracket | steel: durable, cheap | extrusion and machining | torque wrench | 1 | |||
| 11 | mounting bracket | 1 | n/a | 1 | ||||||
| 12 | screw | 1 | hold on power and data provider | steel: durable, cheap | extrusion and machining | torque wrench | 1 | |||
| 13 | power and data provider | 1 | provide data (still attached by strip) | n/a | 1 | |||||
| screw | 1 | arm base | steel: durable, cheap | extrusion and machining | torque wrench | 1 | ||||
| 14 | bolts | 2 | hold on arm bracket | steel: durable, cheap | extrusion | 1/4 wrench | 1 | |||
| 15 | arm bracket turn limiter | 1 | guide the movement of the arm | plastic | injection molding | n/a | 1 | |||
| 16 | screws | 4 | hold on palter | steel: durable, cheap | extrusion and machining | torque wrench | 1 | |||
| 17 | top of plater piece | 1 | hold on all of the platers and separators | steel: durable, cheap | metal casting | n/a | 1 | |||
| 18 | plater #1 | 1 | hold the recorded data | aluminum | metal casting | n/a | 1 to remove - 2 to reassemble | |||
| 19 | separator bracket | 1 | hold the platters separate to they can be accessed by the arms | steel: durable, cheap | metal casting | n/a | 1 | decreasing the space in between the platters could allow for more platters | ||
| 20 | plater #2 | 1 | hold the recorded data | aluminum | metal casting | n/a | 1 to remove - 2 to reassemble | |||
| 21 | separator bracket | 1 | hold the platters separate to they can be accessed by the arms | steel: durable, cheap | metal casting | n/a | 1 | |||
| 22 | arm bracket and arm | 1 | hold writing arm in place | steel: durable, cheap | metal casting | n/a | 1 | |||
| 23 | plater #3 | 1 | hold the recorded data | aluminum | metal casting | n/a | 1 to remove - 2 to reassemble | |||
| 24 | separator bracket | 1 | hold the platters separate to they can be accessed by the arms | steel: durable, cheap | metal casting | n/a | 1 | |||
| 25 | plater #4 | 1 | hold the recorded data | aluminum | metal casting | n/a | 1 to remove - 2 to reassemble | an increase in platters could be beneficial if it was compensated by a higher-speed spindle motor | ||
| 26 | motor screws | 3 | hold the motor in place | steel: durable, cheap | extrusion and machining | torque wrench | 1 | |||
| 27 | spindle motor | 1 | turns the platters | steel: durable, cheap | 1 | increased speed could allow for more platters but may also cause more heat and vibration | ||||
| ARM | ||||||||||
| 28 | teeth screw | 1 | steel: durable, cheap | extrusion and machining | torque wrench | 1 | ||||
| 29 | baring | 1 | 1 |
After Disassembly
Assembly
- Document each step to reassemble the product
- How difficult was each assembly step?
- What types of tools were required to perform this step?
After Assembly
- Does it still work?
- Conclusion remarks
References
APA Style You must use this format (It's easier than MLA, so don't worry).
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