Bike pump
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The following is a bill of materials from the bike pump dissection. The parts can be sorted based on part number, quantity, weight or material by clicking on the appropriate tab at the top of the table. | The following is a bill of materials from the bike pump dissection. The parts can be sorted based on part number, quantity, weight or material by clicking on the appropriate tab at the top of the table. | ||
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Revision as of 22:52, 17 September 2012
Contents |
Executive Summary
This will be a brief executive summary that describes the key findings and recommendations.
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Product Stakeholders
We have identified possible needs and wants for all possible stakeholders. The identified needs are those needs that are essential in order to encourage the stakeholder to use it. The identified wants are additional features that may benefit the stakeholder, however, they are not vital to the use of the product. For the purpose of this study, the consumer is the person pumping up the bike tire, not necessarily the bike owner.
Stakeholder Needs and Wants | ||
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Stakeholder | Needs | Wants |
Consumer |
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Retailer |
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Manufacturer |
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Shipping & Transportation |
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Product Use Study
This is where we will document in detail how the product is used, step by step, and summarize findings from our user studies with photo documentation.
Product Mechanical Function
We will include some pretty diagrams and information about the mechanical function of our part.
Assembly
This is where we will have information/photo about the major assembly.
An exploded view of the floor bike pump will be inseted here... with all components labeled.
Sub-Assembly
We may need to include detailed sub-assembly photos and information here.
This is where we will insert exploded views of each internal sub-assembly with labeled components and a brief summary of each sub-assembly function.
Bill of Materials
The following is a bill of materials from the bike pump dissection. The parts can be sorted based on part number, quantity, weight or material by clicking on the appropriate tab at the top of the table.
Design for Manufacture and Assembly (DFMA)
- INCLUDE AN INTRODUCTION AS TO WHAT DFMA IS
Manufacturing
The competitor product we analyzed displayed numerous positive manufacturing features that would minimize cost and complexity. The overall design is surprisingly simple, a result of combining features into single parts where possible, using only a few different materials, and minimizing the overall part count. (INSERT COMPONENT WITH BIGGEST ROOM FOR IMPROVEMENT AND WHY).
Below are some of the DFM Guidelines and the observations we made of how our competitor designed their product with those guidelines in mind and some areas we believe they could improve.
Design for Manufacturing Features and Improvements | ||
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Design Objective | Strengths | Areas of Improvement |
Minimize Part Count |
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Standardize Design Features |
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Keep Designs Simple |
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Multifunctional Parts |
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Ease of fabrication |
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Avoid Tight Tolerances |
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Minimize Secondary & Finishing Operations |
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Assembly
Assembly of the competitor's product is not the consumer's responsibility and occurs prior to the retail stages in the supply chain. The product requires tools and fasteners only where the piston chamber attaches to the base, and nearly all of the remaining interfaces are threaded. While minimizing toolage, this raises many challenges with orientation and radial symmetry where the assembly process could be made clearer. The variety of O-rings, springs, and cylinder diameters is another weakness that has room for improvement.
Due to the assembly process being deliberately separated from the consumer, ease of assembly is not a high priority and leaves room for redesign towards simplicity.
Design for Assembly Features and Improvements | ||
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Design Objective | Strengths | Areas of Improvement |
Minimize Part Count |
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Minimize Assembly Surfaces |
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Use Sub-assemblies |
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Mistake-Proof |
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Minimize Fasteners |
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Minimize Handling |
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Minimize Assembly Direction |
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Provide Unobstructed Access |
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Maximize Assembly Compliance |
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Failure Modes & Effects Analysis (FMEA)
- NEED TO INCLUDE INTO AS TO WHAT FMEA IS
- INCLUDE THE SCALE USED TO DETERMINE S/O/D VALUES
- THEN, ADD TO REFERENCE SECTION THE SOURCE FOR THE SCALE
Failure Modes and Effects Analysis - Floor Bike Pump | |||||||||
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Item & Function | Failure Mode | Effects of Failure | S | Causes of Failure | O | Design Controls | D | RPN | Recommended Actions |
Valve Nozzle Connector | Air leaking out of wheel | Bike tube loses air | 3 | Misalignment to valve | 2 | Check if it locks | 2 | 12 | Something to help user better secure nozzle properly |
Does not lock | No air transfer into wheel | 3 | User not using it correctly | 2 | Check if it locks | 3 | 18 | Something that does not use a lock, Make it easier to lock | |
Valve may not fit | No air transfer into wheel | 1 | Wrong valve type | 4 | Check if it locks | 4 | 16 | Make a universal valve, Provide adapters | |
Pressure Gauge | Air leaking out of wheel | Won't display pressure | 2 | Broken gauge | 1 | Test in manufacturing plant | 2 | 4 | Better pressure gauge tube seal, Different pressure reading technique |
Incorrectly calibrated | Displays incorrect pressure reading | 2 | Dropping gauge, Manufacturing error | 1 | Test in manufacturing plant | 7 | 14 | -- | |
Handle rod | Bends | Can not apply downward force, Breaks rod | 5 | Bars are physically bent forward and not down, Damaged, Improper use | 2 | -- | 7 | 70 | Stronger rod |
Tube | Air leaking out of wheel | Loss of air from tire | 3 | Misuse, Damage | 3 | -- | 4 | 36 | Tube wrapped in durable material |
Design for Environment (DFE)
Design for Environment (DFE) can help bring focus to specific areas when improving a design. By analyzing the entire life cycle, the areas of the largest impact can be determined and minimized.
Design for Environment | ||
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-- | Production | Use |
Item Consumed | Bike Pump | Bike |
Sector # and Name | #339920: Sporting and athletic goods manufacturing | #336991: Motorcycle, bicycle, and parts manufacturing |
Reference Unit | 1 Bike Pump | 1 Bike |
Units consumed per product life | 1 | 1 |
Cost Per Unit* | $39.04 | $234.27 |
Lifetime Cost* | $39.04 | $234.27 |
Sector mtCO2e per $1M | 613 | 543 |
Implied mtCO2e per product life | 0.0239 | 0.1272 |
CO2e Tax @ $30/mtCO2e | $0.72 | $3.82 |
*2002 USD
Production
Using the sporting and athletic goods manufacturing sector of EIO-LCA, we were able to estimate the environmental impact of producing the bike pump. The bike pump costs $50 today, which is about $39.04 in 2002. Power generation and supply has the largest contribution to the 613 mtCO2e per 1 million dollars spent in the sporting and athletic goods manufacturing category. Therefore we can estimate that for every bike pump produced 0.0239 mtCO2e is released into the environment, resulting in a minor $0.72 tax per pump.
Sector #339920: Sporting and athletic goods manufacturing
Economic Activity: $1 Million Dollars
Displaying: Greenhouse Gases
Number of Sectors: Top 10
Use
If the consumer purchases a bike pump, we can assume that they own at least one bike. Therefore we used the EIO-LCA Motorcycle, bicycle, and parts manufacturing sector to study the environmental impact of use of the pump. We estimated that today the average bike costs $300 which equates to about $234.27 in 2002. Our analysis approximated a small $3.82 tax per bike.
Sector #336991: Motorcycle, bicycle, and parts manufacturing
Economic Activity: $1 Million Dollars
Displaying: Greenhouse Gases
Number of Sectors: Top 10
Group Dynamic
Team Leader: Dinesh Ayyappan
DFMA Lead: Patrick Hogan
FMEA Lead: Jonathan Wong
DFE Lead: Amber Ohiokpehai
Wiki Page Programmer/Report Compilation: Lauren Milisits
References
This is where we should list any references that we used throughout the process of our report.