P10511: Miniaturization of Xerography Derek Meinke (ME, PM) Matthew Liff (ME) Tony Zhang (EE) Zaw Htoo (ISE)

Customer Requirements Pareto

Engineering Metrics Pareto

Risk Assessment Pareto Link to Risk Assessment Table rev2

EE Wiring Schematic

Detailed Design Iso

Almost all parts are the same thickness for feasibility of manufacture (10mm). Vertical components will be mounted onto an aluminum jig plate. Vertical components will be supported with L- brackets or gussets.

Detailed Design Charger

Interference with charger or charger mount components with photoreceptor end caps. Charger wires binding with mount components when sliding for alignment. Sliding placement with gapping blocks.

Detailed Design Motor

Moment created from heavy photoreceptor motor. Interference from photoreceptor motor cradle with smaller ESV motor underneath. Collars for photoreceptor motor to shaft and ESV motor to lead screw.

Detailed Design Photoreceptor

Spring selection for correct compression to eliminate slippage. Bearing selection Angle of V-flanges on endcaps. Notch in shaft, notch in endcap, key insert for driven side.

Detailed Design Erase

Thin metal bar to support erase light. Bend for no interference with endcaps. Notches for discrete placement (~1 inch gap).

Detailed Design ESV

Bearing selection. ESV mount guide design (delrin or aluminum?). Lead screw, re-use current part.

BOM EE BOM presented at systems design review ME BOM – Jig plate – L-Brackets – 10mm thick steel – Bearings – Motor coupler – Delrin/aluminum – Graphite brush

LabVIEW State Diagram

Deliverable (weight) Score in Week (#) Max. Score Score*Excellent/Very GoodGood/AcceptableBarely acceptableUnacceptable Comments, Target, Date Completed Bill of Materials(9)3 BOM is complete, and long lead time items and vendors have been identified. (3 points) BOM is partly complete - some specifics still remain to be defined. (1-2 points) BOM is imcomplete, most items not specified. (0 points) Detailed Design Drawings/Schematics(9)5 All drawings for parts to be manufactured are complete, assembly drawings demonstrate that system assembly is feasible. (5 points) Most drawings or schematics are complete, assembly drawings are nearly done. (3-4 points) Some drawings are complete, others are not done or require modification. (1-2 points) Few, if any, drawings or schematics exist beyond hand sketches or concept drawings. (0 points) Feasibility Analysis(9)7 Significant analysis has been done to demonstrate feasibility of all systems/components. Appropriate links to the risk assessment activity are complete. (6-7 points) Most design features have convincing support, some require further work. Link to risk assessment partly complete. (4-5 points) Many design features require further analysis to demonstrate feasibility. (2-3 points) Little analysis has been done to demonstrate feasibility. (0 points) Risk Assessment and actions to minimize risks - Detailed Design phase (9)3 As detailed design phase has progressed, the initial list of risks has been reviewed and updated. Actions that could be taken to minimize risks have been taken and documented. (3 points) Plans are in-place for to monitor and take action on most of the key risks the plans and analyses are missing some key elements. (1-2 points) Plans are not in place to reassess and minimize the impacts of risk. (0 points) Knowledge & understanding of design (9)7 Thorough and in-depth understanding is evident of the design (system & relevant subsystems) and rationale for design decisions and tradeoffs. (6-7 points) Good understanding is evident of the design and rationale for most design decisions and tradeoffs. (4-5 points) General comprehension of the design is evident but rationale for decisions is not solid and tradeoffs are not well understood. (2-3 points) Superficial understanding of the design is evident at either the system or subsystem level. Rationale for specific design decisions and tradeoffs is poorly understood, if at all. (0 points) Detailed Design Plan to meet Customer Needs/Engineering Specifications including a Preliminary Test Plan (9)7 Sufficient evidence is presented to demonstrate that customer needs and design specs will be met. This includes development and documentation of a preliminary test plan using the suggested format (6-7 points) Team demonstrated that most customer needs and design specs will be met. Test plan has been developed but could be more specific (4-5 points) Team demonstrated that some needs and specs will be met, but others require significant further analysis. (2-3 points) Many questions remain as to whether needs and specs will be met. There is no test plan (0 points) Detailed Design Review execution(9)5 Design Review was very well planned and executed with appropriate attendees. All subsystems discussed, key issues addressed, notes and action items documented. (5 points) Design Review execution was acceptable but was weak in one or more areas: breadth of participants, preparation, thoroughness, or documentation. (1-4 points) Design Review was not held or was poorly executed: key subsystems were not reviewed, key issues were not addressed, little/no preparation or documentation. (0 points) Detailed Design Review represents 37% of your MSD 1 Grade 37 X X X X X X X

Action Items = Busy Week Obtain wireless PCI card from John Wellin. Make computer functional for LabVIEW code. Further follow-up with Rob Kraynik on concept feasibility. Finish CAD parts: ESV guide, PR shaft key, motor shaft collars. Create part drawings. Create ME Bill of Materials. Further review Risk Assessment.

Questions?