Concept Selection Facts About Concept Selection

More documents

Recommendations

Info

Outpatient Syringe Concept B – Rubber Brake Pushnut grips shaft when pushed but releases when being pulled (rubber clutch offers resistance). Dose is set by length of stroke. Source: Ulrich K, Eppinger S, Product Design and Development ME EN 4000 – Engineering Design I – Concept Selection 13 Outpatient Syringe Concept D – Plunge Stop (Reference) Stroke length is set by screwing outer sleeve forward, thereby increasing the spacing between plunger and outer sleeve Source: Ulrich K, Eppinger S, Product Design and Development ME EN 4000 – Engineering Design I – Concept Selection 15 Outpatient Syringe Concept C - Ratchet Ratchet engages pusher when plunger is being pushed and disengaged is plunger is being pulled. Dose is set by length of stroke. Source: Ulrich K, Eppinger S, Product Design and Development ME EN 4000 – Engineering Design I – Concept Selection 14 Outpatient Syringe Concept F Stroke length is set through angle of operating lever. Source: Ulrich K, Eppinger S, Product Design and Development ME EN 4000 – Engineering Design I – Concept Selection 16
Outpatient Syringe Concept G – Dial Screw Set dose by turning knob. This energy is stored in a spring. Actuate by releasing the lead screw, which will turn according to the rotational energy supplied by the spring. Source: Ulrich K, Eppinger S, Product Design and Development ME EN 4000 – Engineering Design I – Concept Selection 17 Concept generation Pair-up with a team mate In upper right of your page •Names of students •Project Name •TA Name • List some criteria that you might judge your designs on CONCEPT VARIANTS SELECTION CRITERIA A B C D E F G REF. Ease of Handling 0 0 – 0 0 – – 0 Ease of Use 0 – – 0 0 + 0 0 Number Readability 0 0 + 0 + 0 + 0 Dose Metering + + + + + 0 + 0 Load Handling 0 0 0 0 0 + 0 0 Manufacturing Ease + – – 0 0 – 0 0 Portability + + – – 0 – – 0 PLUSES 3 2 2 1 2 2 2 SAMES 4 3 1 5 5 2 3 MINUSES 0 2 4 1 0 3 2 NET 3 0 –2 0 2 –1 0 RANK 1 3 7 5 2 6 4 CONTINUE? Yes Yes No No Yes No Yes ME EN 4000 – Engineering Design I – Concept Selection 19 Example: Concept Screening CONCEPT VARIANTS SELECTION CRITERIA A B C D E F G REF. Ease of Handling 0 0 – 0 0 – – 0 Ease of Use 0 – – 0 0 + 0 0 Number Readability 0 0 + 0 + 0 + 0 Dose Metering + + + + + 0 + 0 Load Handling 0 0 0 0 0 + 0 0 Manufacturing Ease + – – 0 0 – 0 0 Portability + + – – 0 – – 0 PLUSES 3 2 2 1 2 2 2 SAMES 4 3 1 5 5 2 3 MINUSES 0 2 4 1 0 3 2 NET 3 0 –2 0 2 –1 0 RANK 1 3 7 5 2 6 4 CONTINUE? Yes Yes No No Yes No Yes ME EN 4000 – Engineering Design I – Concept Selection 18 Outpatient Syringe Concept DF Source: Ulrich K, Eppinger S, Product Design and Development ME EN 4000 – Engineering Design I – Concept Selection 20
Page 1 and 2: Identify Customer Needs Concept Sel
Page 3: Two Stage Process 1. Concept Screen
Page 7: Concept Scoring Example: Outpatient

Concept Selection Facts About Concept Selection

Create successful ePaper yourself

Delete template?

Save as template?