Table of Contents
Phase Goals and Technical Questions
Our vision for this phase is to address critical design concerns in high technical risk design areas. This will be accomplished by generating worst case use scenarios which show worst loading scenarios. Free body diagrams and analysis will begin to allow us to size individual components and determine when we have met engineering requirements with the design. These analyses will allow us to begin to generate CAD documents with finalized design dimensions for manufacturing. All designed components must be reviewed as either a purchased or manufactured part. Manufactured parts must be reviewed for ease of fabrication and assembly. As components are identified, a BOM will be created and updated which will allow us to track manufacture times and purchase lead times for components as well as generate accurate cost estimates. A draft user manual will also start to be generated. By the end of week fifteen all engineering documents and designs will be finalized based on technical analysis. A finalized BOM with full cost determinations will exist, along with a draft user manual. All components will undergo a fatigue analysis for lifetime determinations. The industrial engineering segment of the group will have mapped all analysis and functionality to engineering requirements and customer requirements. A detailed plan for MSD II will be generated including timing for manufacturing and assembly of different components. We will generate a testing plan to ensure component quality and safety in the final assembly.
Key Subsystems and Technical Questions Associated with Systems
1. Jaw/Table Gripping System
- Can we concentrate loads on the optical breadboard surface with use of bolts? If yes then, we can proceed with our intended design? Otherwise we have to generate another system that is agreeable to both customer and table manufacturer. (Customer wanted bolting used to interface table without clamping)
- What are the stresses that the jaw will undergo in both dynamic and static cases? How big does it need to be? This will require a complete structural analysis.
- How many bolts do we need to use to hold tables (complete bolt stress analysis)
2. Rotational System
- How are we going to rotate tables? (i.e. human interface system)
- How are we going to select the bearings needed for the system? Factors include: how to fit, materials to fit into, material of bearing itself, grade, etc.
3. Vertical Support Columns/Lifting Mechanism
- Do we need to generate Engineering requirements for the structure with strain/deflection criteria or stress criteria? What are those requirements?
- How big do the vertical columns that support the clamping system need to be? What should they be made of (tubing, boxes etc.)? Structural analysis after determining states of loading will address these topics.
- How are we interfacing structural beams with the lifting system? We are going to use ballscrews. How are we going to lock the lifting mechanism in place on the structure so that it does not drop or lower unintentionally?
- What size ball screws do we need? What grade of material? What size handle will be required to manipulate screws within basic human ease of use criteria? We will also need to undertake bearing selection and interface blocks with base system and vertical supports.
4. Base of lifting system
- What are appropriate casters?
- Structural analysis of base with vertical columns to determine size and material to make base of system. Interface with ball screw.
- What sort system will adequately bring our system to a complete stop. How are we going to interface them well?
6. System as a Whole
- How is human error going to affect our system and how do we compensate for this?
- How are we going to keep within initial projected $500 budget? How do we justify larger expenses?
- Have we addressed all necessary deliverables for both MSD as a class and for our customers? How are we going to address and finish any that are not in this plan?
Task ChartAt the beginning of week 9, we evaluated our progress and developed a plan in order to complete our final deliverables and prepare for the second phase of the design project. Each physical component of the device has been assigned to a teammate as well as what outcomes are expected from their progress. These outcomes should represent our shared vision in determining what tasks are prioritized for completion. Our team will use this to provide updates amongst members, guides, and our customers as needed.
Percentage Completion ChartThis chart is to be used alongside the task chart above in order to determine our progress goals each week. The associated tasks represent a percentage of the progress required for our team to confirm that an engineering component has been finalized. We also wish to provide justifications for why prioritize certain tasks over others and their associated percentages.
Prototyping, Engineering Analysis, Simulation
The Engineering Analysis page shows the current state of analysis and component selection for various subsystems in the Isolation Table Mover. All documentation contained is under constant review.
Engineering Drawings, Drafting, & Operation Manual Construction
Engineering Drawings and CAD Files This link will lead to our associated CAD files, engineering drawings/schematics, and any information pertaining to the operational manual.
Bill of Material (BOM)
BOM This section will provide our tentative bill of materials with information pertaining to manufacturers, price quotes, delivery schedules, and other associated financial information.
Test Plans This section has not yet been finalized due the nature of our design process and schedule. This will be updated at the next review. We will have discussed our plans moving forward.
Risk Assessment This link will provide our updated Risk Assessment as well documentation related to our engineering and customer requirements.
- Presentation and/or handouts
- Notes from review
- Action Items
Table of Contents
|MSD I & II||MSD I||MSD II|