Jar Opener RedesignJar Opener Redesign

Team 04FTeam 04FSponsor: R.I.T. ME Dept.Sponsor: R.I.T. ME Dept.Advisor: Dr. WalterAdvisor: Dr. WalterSean DohertySean DohertyFrank NovakFrank NovakMike SalvaterraMike Salvaterra

History of Team 04FHistory of Team 04FFall 2002: Sponsor FLVNSFall 2002: Sponsor FLVNSPrimary Contact: Ed ShanshalaPrimary Contact: Ed Shanshala• Patient Mobility ProjectPatient Mobility Project

Easy Transfer Bath Bench

History of Team 04FHistory of Team 04FWinter 2002-03: Sponsor FLVNSWinter 2002-03: Sponsor FLVNSPrimary Contact: Ed ShanshalaPrimary Contact: Ed Shanshala• Similar, although inferior, design found Similar, although inferior, design found

on the internet.on the internet.• Loss of funding.Loss of funding.• Redesign project proposed.Redesign project proposed.

History of Team 04FHistory of Team 04FSpring 2003: Sponsor Spring 2003: Sponsor

FLVNSFLVNSPrimary Contact: ???Primary Contact: ???• Ed Shanshala has left the Ed Shanshala has left the

building.building.• FLVNS loses interest in FLVNS loses interest in

funding our project.funding our project.• RIT ME Dept. graciously RIT ME Dept. graciously

offers funding.offers funding.

Original Design Original Design RequirementsRequirements• Design a device that willDesign a device that will

– Utilize mechanical or electrical Utilize mechanical or electrical methods to open jars, or a methods to open jars, or a combination of both.combination of both.

– Break the vacuum seal of jars with Break the vacuum seal of jars with right-handed threaded lids.right-handed threaded lids.

– Be compatible with jars of variable lid Be compatible with jars of variable lid diameter and jar height. diameter and jar height.

– Be designed within a minimized Be designed within a minimized budget.budget.

Sean DohertySean DohertyFrank NovakFrank NovakMike SalvaterraMike Salvaterra

Original Design Original Design RequirementsRequirements• Design a device that willDesign a device that will

– Open many jars of different sizes Open many jars of different sizes consecutively and without failure.consecutively and without failure.

– Be designed for intuitive use, possibly Be designed for intuitive use, possibly utilizing visual cues.utilizing visual cues.

– Not pose any safety hazard, however Not pose any safety hazard, however small, with normal use (sharp edges, small, with normal use (sharp edges, pinch points, etc.)pinch points, etc.)

– Be durable.Be durable.

Sean DohertySean DohertyFrank NovakFrank NovakMike SalvaterraMike Salvaterra

Original Jar OpenerOriginal Jar Opener

Design ConceptDesign Concept

•Straight slotted plates

•Curved slotted plates

•Sliding gripper assemblies

Design FlawsDesign Flaws• Excessive weightExcessive weight• OversizedOversized• Lacks aesthetic appealLacks aesthetic appeal• DFA inefficienciesDFA inefficiencies

Redesign RequirementsRedesign Requirements• Reduce the area of the footprint by Reduce the area of the footprint by

40% or more.40% or more.• Reduce the weight of the device by Reduce the weight of the device by

50% or more.50% or more.• Improve the aesthetics of the design.Improve the aesthetics of the design.• Produce a prototype with a cost of Produce a prototype with a cost of

$300 or less.$300 or less.

Redesign ConsiderationsRedesign Considerations• Range of jar sizesRange of jar sizes• Elimination of cantilever supportElimination of cantilever support• Reuse of slotted plate and gripper Reuse of slotted plate and gripper

designdesign• Recycle parts, wherever possible to Recycle parts, wherever possible to

reduce costreduce cost

Redesigned Jar OpenerRedesigned Jar Opener• Mostly delrin Mostly delrin

constructionconstruction• Scaled down plate Scaled down plate

assemblyassembly• 3-legged support 3-legged support

plateplate• Recycled grippers Recycled grippers

and top rotating hub and top rotating hub assemblyassembly

Redesigned Jar OpenerRedesigned Jar Opener

Prototype ConstructionPrototype Construction• CNC base and slotted platesCNC base and slotted plates• Mill “Y-Plate”Mill “Y-Plate”• Bore out lower leg assembliesBore out lower leg assemblies• Turn down upper legsTurn down upper legs• Drill and tap holesDrill and tap holes• Re-machine baseRe-machine base

Stress CalculationsStress CalculationsAssumptionsAssumptions• 55 in-lb max torque55 in-lb max torque• Maximum extension of legsMaximum extension of legs

Maximum stress exists in the rod, where Maximum stress exists in the rod, where attached to the y-plateattached to the y-plate

Factor of Safety = 2.1Factor of Safety = 2.1

DFA StatisticsDFA Statistics

Theoretical Old New Improvement# of Parts 16 80 56 30.00%Assembly Efficiency 100.00% 13.30% 22.90% 9.60%

Assembly Time (sec) 48 360 210 41.67%

Weight (lb) N/A 31.5 9.5 69.80%Area of Footprint (sq. in)

N/A 168 73.2 56.50%

Testing of PrototypeTesting of Prototype• Locking Locking

mechanismmechanism• Machining of Machining of

base: base: inconsistent inconsistent dimensionsdimensions

• Slotted plate Slotted plate invertedinverted

Testing of PrototypeTesting of Prototype• Successfully Successfully

opened jars of opened jars of various sizesvarious sizes

• Telescoping legs Telescoping legs slide smoothlyslide smoothly

• Locking Locking mechanism is mechanism is effectiveeffective

BudgetBudgetUnit Ext.Price Price

Total $275.63

8575K416Black Delrin Sheet 3/8" Thick, 24" X 24"

Line Quantity Part No. Description$104.90

2 1 EA 8575K231Black Delrin Sheet 1-1/4" Thick, 12" X 12"

$100.85

$104.90

$100.85 1 1 EA

3 1 EA 8627K59White Delrin Hollow Rod 3/4" OD X 1/2" ID, 5' Length

87145K73Pure Gum Rubber Sheeting 1/8" Thick, 12" X 12", 40A Durometer, Off White

$16.67

4 5 FT 8576K15

Black Delrin Rod 1/2" Diameter

$5.80

$16.67

$1.16

$10.66

6 3 EA 8689A311Brass Round-Nose Spring Plunger Short L, 8-32, 1.50-4.75# End Force, W/O Lock Element

$36.75

$5.33

$12.25

5 2 EA

ScheduleScheduleTask

15-Mar

22-Mar

29-Mar 05-Apr 12-Apr 19-Apr 26-Apr

03-May

10-May

17-May

Scheduling                    

Requirements                    

Obtain Sponsor                    

Re-design                    

Design Approval                    

Budget                    

Budget Approval                    

Order Materials                    

Build                    

Technical Paper                    

Test                    

Prepare Presentation                    

ConclusionConclusion• 70% weight reduction70% weight reduction• 57% footprint area reduction57% footprint area reduction• Increased Assembly EfficiencyIncreased Assembly Efficiency

Our redesigned Jar Opener allows the user to effortlessly Our redesigned Jar Opener allows the user to effortlessly open jars of various sizes. Its sleek, efficient, and cost open jars of various sizes. Its sleek, efficient, and cost effective design makes this product attractive to effective design makes this product attractive to potential investors and practical for consumers to use in potential investors and practical for consumers to use in their homes. their homes.

Questions?Questions?

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