Adjustable Art Table

Team 9Bruce Bassi

Kristen HaldemanRichard Sierra

Client Coordinator: Dr. Brooke HallowellSupervising Professor: Dr. John D. Enderle

Funding: National Science Foundation

Background Information

Passion Works Studio Studio for artists with

disabilities Previous NSF Tables

Unstable Required cords Exposed electronics

Currently Marketed

Adjustable Tables Available Lack of wheelchair accessibility Not easily adjustable Electric

Our Previous Design

Components Gas Springs Gear Rack Tabletop

30”x42”

Our Previous Design

Rear View

Side View

42"

Pneumatic Air Cylinders

Mounting PlateHeight Adjustment

Button

Base

Release Hose

40"

Handle

Handle

Gear Rack

Mounting Plate

Pneumatic Air Cylinder

Height Adjustment Button

Base

30"

27" - 42"

30"

Mounting Plates

Support Plate

Problems With Old Design

Needs of the client changed Old table was designed for one

person Must be used by multiple people

Previous parts incompatible with large table

Final Design

Components Tabletop

72”x30” Gas Springs Unibearings

Tabletop

Round edges 6 feet long Easy to clean

Gas Springs

Stroke length: 13” Can hold 2,000 lbs Locking Slowly raise with

14 lbs force

Hydraulic Release

Unibearings

Can hold up to 300 lbs

User must unlock upper and lower brakes

How to use unibearings

Must be disengaged to adjust table

Make sure that the unibearings are tight before the table is used

Tighten Loosen

Unibearing testing

Unibearing testing at the SRF

Framing

Gussets

Original table upper framing

Unibearing Leg

Unibearing Leg gas spring

gas spring

Single hole bracket

Upper table framing

Framing and Tabletop

Extrusions attached to bottom of tabletop in 8 places

Gussets hold legs to the tabletop

Base

Four base extensions

prevent rocking

Budget Allotted $750

Part Manufacturer Quantity Total Cost

Original Tabletop Officemax 1 $78.72

Locking Gas Spring

Easylift of America 2 $194.06

Parallel Hydraulic Release

Easylift of America1 $113.45

Shipping Easylift of America 1 $13.88

Handle (not used but purchase for design prior to

changes)

MSC Industrial Supplies

1 $21.86

1” by 1” Aluminum Extrusion

Air Inc 249” $55.99

1” by 3” AluminumExtrusion

Air Inc 62” $32.24

New Tabletop Staples 1 $64.99

8020 Accessories Air Inc -- 154.34

Gussets Home Depot 2 $15.00

Total $812.73

How to use table

To Lower Table

To Raise Table

Testing Final Product

The table works well with wheelchairs

Original requirements have been met

Acknowledgements

Dr. Enderle Chris Liebler NSF Funding Rich and Serge from the machine

shop Tracy Makuch

Questions

…thanks for listening

Appendix

The following figures and tables have been included to aid in explanations for questions.

Gas Spring Specifications

Stroke Length

Diameters of Rod/Piston

Force of Gas

Length of Gas Spring (Fully Extended)

Blocking Force

350 mm (13.78 in)

10/22 mm (.4/.87 in)

115 N (25.8 lbs)

927 mm (36.5 in)

12000 N(~2,700 lbs)

Gas Spring

Parallel Hydraulic Release

Debcor

Debcor $535 Not easily

adjustable Not wheelchair

accessible Sharp edges

Balt Easy

Model 3627 $378 Not for artists No leg room Height adjustment

out of desired range

Closet Masters

Closet Masters $780 Good: Drawing

surface, ease of adjustment

Bad: Electronic, no leg room

References

1. http://nsf-pad.bme.uconn.edu2. http://www.closet-masters.com/Ergonomics_SF/Height_adjustable_tables/3. www.EasyLiftSprings.com4. http://www.dickblick.com/zz501/00/5. http://888ergodir.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=WOW&Category_Code=WS