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