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Jar Opener Redesign. Team 04F Sponsor: R.I.T. ME Dept. Advisor: Dr. Walter Sean Doherty Frank Novak Mike Salvaterra. History of Team 04F. Fall 2002: Sponsor FLVNS Primary Contact: Ed Shanshala Patient Mobility Project. Easy Transfer Bath Bench. History of Team 04F.
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Jar Opener Redesign Team 04F Sponsor: R.I.T. ME Dept. Advisor: Dr. Walter Sean Doherty Frank Novak Mike Salvaterra
History of Team 04F Fall 2002: Sponsor FLVNS Primary Contact: Ed Shanshala • Patient Mobility Project Easy Transfer Bath Bench
History of Team 04F Winter 2002-03: Sponsor FLVNS Primary Contact: Ed Shanshala • Similar, although inferior, design found on the internet. • Loss of funding. • Redesign project proposed.
History of Team 04F Spring 2003: Sponsor FLVNS Primary Contact: ??? • Ed Shanshala has left the building. • FLVNS loses interest in funding our project. • RIT ME Dept. graciously offers funding.
Original Design Requirements Sean Doherty Frank Novak Mike Salvaterra • Design a device that will • Utilize mechanical or electrical methods to open jars, or a combination of both. • Break the vacuum seal of jars with right-handed threaded lids. • Be compatible with jars of variable lid diameter and jar height. • Be designed within a minimized budget.
Original Design Requirements Sean Doherty Frank Novak Mike Salvaterra • Design a device that will • Open many jars of different sizes consecutively and without failure. • Be designed for intuitive use, possibly utilizing visual cues. • Not pose any safety hazard, however small, with normal use (sharp edges, pinch points, etc.) • Be durable.
Design Concept • Straight slotted plates • Curved slotted plates • Sliding gripper assemblies
Design Flaws • Excessive weight • Oversized • Lacks aesthetic appeal • DFA inefficiencies
Redesign Requirements • Reduce the area of the footprint by 40% or more. • Reduce the weight of the device by 50% or more. • Improve the aesthetics of the design. • Produce a prototype with a cost of $300 or less.
Redesign Considerations • Range of jar sizes • Elimination of cantilever support • Reuse of slotted plate and gripper design • Recycle parts, wherever possible to reduce cost
Redesigned Jar Opener • Mostly delrin construction • Scaled down plate assembly • 3-legged support plate • Recycled grippers and top rotating hub assembly
Prototype Construction • CNC base and slotted plates • Mill “Y-Plate” • Bore out lower leg assemblies • Turn down upper legs • Drill and tap holes • Re-machine base
Stress Calculations Assumptions • 55 in-lb max torque • Maximum extension of legs Maximum stress exists in the rod, where attached to the y-plate Factor of Safety = 2.1
Testing of Prototype • Locking mechanism • Machining of base: inconsistent dimensions • Slotted plate inverted
Testing of Prototype • Successfully opened jars of various sizes • Telescoping legs slide smoothly • Locking mechanism is effective
Conclusion • 70% weight reduction • 57% footprint area reduction • Increased Assembly Efficiency Our redesigned Jar Opener allows the user to effortlessly open jars of various sizes. Its sleek, efficient, and cost effective design makes this product attractive to potential investors and practical for consumers to use in their homes.
Questions? ? ?