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TheEASELECTRIC
University of Connecticut - Biomedical EngineeringSenior Design Team 4
Team Members:•Frank Molnar • Adam Ross • Jonathan Sapienza • Jacqueline Tabor
Outline
Introduction Other Products Patented Products Safety Features Design Tracking Movement Fabrication Electrical System Final Budget Conclusion
Introduction Passionworks Program:
Expanding world of disabled artists Mission Statement:
Passion Works will be a premier art studio that supports collaborations between artists with and without developmental disabilities.
Growing demand for adjustable easels Disabilities involving limited dexterity, limited mobility,
visual acuity trouble, cerebral palsy, moderate cognitive impairment.
Increasing demand for a remotely adjustable easel with many ranges of motion
Introduction – Our Client
This easel was designed for our client Harry at Passionworks.
Other Products
Commercially Available “The Dreamer”
Allows for vertical, horizontal and tilt motions.
Accessible only to artists who must paint with their mouths.
Not applicable to artists with other disabilities.
Patented Easels
Patents 5,494,251 – “Artist’s Easel”
Allows for vertical motion
Has a wheeled Base 5,725,192 – “Adjustable
Artist’s Easel” Allows for rotational
adjustment, but no motion in other planes
5,590,864 – “Easel for Handicapped Artists”
Provides only a tilting function
Safety Features Safety Features:
Automatic mechanism to stop movement of easel beyond its maximal excursion
Master switch to turn device on/off Circuit Breakers Slow movements so there is sufficient time to control device due to
delayed responsive skills of the artist Minimal amount of exposed cords or wires
Design
Material Aluminum Stock
provided by Independent Welding Inc.
Advantages: Lightweight Sturdy Weldable Easy to fabricate Square tubing will
conceal wiring and moving actuators throughout the easel
Design
Easel Components: Base
Clamping arms Major circuit parts
Carriage Responsible for all
motion Actuators Tracking System
1.00
24.00
4.00
1.00
3.00
1.25
22.00
2.00
1.25
Design – Side Views of Easel
18.00
Tracking
Actuators provide movement in planes along slides
Require strong tracks resistant to vibration or unwanted movement when painting
Actuators
Firgelli Automations 6” Stroke Actuators 750 N Load Capacity Travel at a slow speed of
1” per second Built in Limit Switches Low Cost ~ $100 12VDC input Aluminum construction
and compact design fit the overall device very well
Movement
Joystick- Features Controls 6
Movements Detachable Illuminating Rocker
Switch Durable and easy to
use
Movement
Linear Actuators Vertical Motion Tilt
Gear Motor & Screw Drive Horizontal Motion
Manual Adjustments Front/Back Motion Initial Easel Face
Position
Movement
Fabrication
Procedure Material Cleaned Parts cut to length Notching, Torching, Fine
Tuning for Assembly Jig set up, parts clamped for
welding Pre-welding treatments
applied (for better penetration and stronger welds)
WELDING Cleaning of Welds
Fabrication
Post Fabrication Slag and spatter removed
from aluminum Edges dulled and filed
down Sharp corners rounded Parts painted and greased
Electrical System
Limit switches to constrain movement
Master on/off switch located on electrical enclosure
Illuminated rocker switch to turn the joystick on/off
2 Amp circuit breakers to prevent damage to motor and actuators
Final Budget
Item Cost Quantity S&H Total Description
6" Linear Actuators $100.00 3 $24.09 $324.09 Firgelli Automations (ZYJ(s)07-8-12-6")
80/20 Tracking .32 c/in. 240 $50.48 $127.28
Switching power supply
$43.14 1 $2.04 $45.18 Powergate (RS-150-12)
Magnetic Circuit Breakers
$5.33 3 $9.50 $25.49
80/20 Slides $37.45 6 $28.93 $253.63
80/20 Clamps $2.49 3 $2.50 $9.97
Relay Sockets $5.59 2 $3.95 $15.13 282191PS
DIN Rail $4.95 1 $3.95 $8.90 B&B electronics (ERS35)
Rocker Switch $1.49 1 $3.95 $5.44 316128CE
Miscellanous $126 $126 Hardware store trips
Total: $815.11
Conclusion
Easelectric meets the needs of our client and is less expensive than currently available products.
Mechanical and electrical design is safe and reliable
Materials are strong and lightweight The easel is collapsible for storage
Acknowledgements
INDEPENDENT WELDING INC. PQ Controls Dr. John Enderle Chris Liebler Dr. Robert Northrop Professor Neil Alderman Brooke Hallowell, Ohio University