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Detailed Design

Table of Contents 1 Progress Report 2 Feasibility Analysis 3 3D Models & Drawings 4 Bill of Material (BOM) 5 Test Plans 5.1 Purpose 6 Design and Flowcharts 7 Risk Assessment 8 Design Review Materials 9 Plans for next phase

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During the Detailed Design Phase, our team planned to finish up base testing. In addition, we planned on ordering parts required to build a draft bedside table, and lastly, we intended to schedule a meeting with the Industrial Design team to finalize base design.

We were able to place an order and receive materials needed for the project (wood for our table top and casters). Our team met with the Industrial Design team and decided on final design for the base. We were able to update our bill of materials as well.

Progress Report

What the team plans to accomplish by the Detailed Design Review

• Choose a base design
• Choose a caster configuration
• Choose type of casters
• Bring a prototype of the chosen base

Accomplished Tasks

• Tested various caster configuration and base designs
• Narrowed our selection of designs
• Compared designs to existing bedside tables
• Discussed with the ID Team concerning their thoughts and input

Tasks that remain
Team Assignment

• Decide which casters we're going to use
• Test force on draft bedside table
• Test center of gravity and moments on draft bedside table

Kyle

• Write test plans for testing the draft bedside table

Stephanie

• Update risk assessment
• Work on feasibility for the supporting rod and table top

Kazi

• Update Bill of Materials (BOM)

Melanie

• CAD new design
• Work on feasibility for the supporting rod and table top

Mendy

• Update concept flowchart
• Work on feasibility for the supporting rod and table top

Decisions Made

• Base design
• Caster configuration

Feasibility Analysis

Complete Feasibility Analysis and Prototyping can be found [here]

3D Models & Drawings

A 3D model of the bedside table base design was made using Computer-Aided Design software.

Base Design 3: Bedside Table Base Design

Bill of Material (BOM)

As of this phase, 2 shielded-casters, and 2 sheets of poplar wood have been purchased. They will be used for prototyping in the Build & Test Prep phase.

Test Plans

Purpose

Demonstrate objectively the degree to which the Engineering Requirements are satisfied

Test Plan 1: Ease of Maneuverability (Modified)

Objective: To test two different base configuration with different caster configurations and loads to further our understanding of a final base design.

Needed:

• Base(s) constructed out of 80/20 aluminum bar stock
• Static Casters
• Swivel Casters
• Weights

Experiment setup: Each team member will partake in this experiment. Each member will push the two different base models up and down a hallway with different caster configurations. Each of the two bases will be tested with the following setups:

• Two static casters in the back, one swivel caster in the front
• Two swivel casters in the back, one static caster in the front
• Weight will be applied to the base each time it is pushed (15 lb max.)

Test Plan 2: Caster Cleanability

Objective: Test casters' resistance to dirty surfaces and the ease of cleaning the caster wheels.

Needed:

• Casters
• Dirty surface

Experiment setup: Create a dirty surface over tile. Run the casters through the dirty surface. Document the wheel afterwards. Use a cleaning wipe to clean the wheels. Notate the ease of cleaning and document the wheel after cleaning. Test for:

• Office Chair Casters
• Rubber Casters
• Nylon Casters
• Polypropylene Casters

Test Plan 3: Caster Ease of Maneuverability

Objective: The ease of maneuverability of different casters on tile and the dirt resistance of each material.

Needed:

• Sheet of wood
• Casters
• Hex nuts

Experiment setup: Screw in the casters to the sheet of wood. Each member will push the wood plank with the different casters on tile floor. Notate qualitative data.
Test for:

• Casters with Nylon Wheels
• Casters with Polypropylene Wheels

Future Test Plans for next semester:

1. Ease of Maneuverability (Entire Table)
2. Tabletop Loads
3. Table Durability Test
4. Base Disinfection Test

Design and Flowcharts

The customer requirements have not changed since the Preliminary Detailed Design Review Phase.

Requirement --> Component --> Solution for the different parts of the bedside table.

Risk Assessment

No additional risks have been identified.

Design Review Materials

Links

• Preliminary Detailed Design Review (PDDR) Notes
• Detailed Design Review Powerpoint
• Project Timeline

Dates for the next reviews

• Detailed Design Review - December 4th, 12-1pm (Rochester General Hospital)
• Build & Test Prep Review - Date/Time TBD (location TBD)

Plans for next phase

The individual plans below show each member's tasks for the next phase (Build & Test Prep). The Build & Test Prep phase begins 1/14/18 and ends late January/early February.

• Stephanie Chu individual project plan
• Mendy Yu individual project plan
• Kazi Rahman individual project plan
• Melanie Roy individual project plan

Kyle Chrysler will be graduating in December 2018. He will be a consultant moving forward.

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