I am trying to obtain a database or spreadsheet for calculating spot welding cylinder sizes against arm length and tip pressure, could anybody help?

-- Gareth Bonnell (gareth@gbonnell.freeserve.co.uk), March 25, 2001

Answers

If it were a direct ratio, there would be no problem. Due to the designs offered by various manufacturers, the actual leverage advantages vary tremendously. Therefore, there is not a general rule or spread sheet covering all possibilities. We could possibly help, when you have more design specifics.

Bob Balla Applications Engineering Manager T. J. Snow Company, Inc. 6207 Provence Street Chattanooga, TN 37421

Phone: 423-894-6234 423-308-3161 (direct line) Fax: 423-892-3889 e-mail: bobballa@tjsnow.com

-- Bob Balla (bobballa@tjsnow.com), March 26, 2001.

Gareth,

As Bob mentions, there is not a set chart you can use because of the differing arm lengths and pivot points. Below is a link to a PDF file that may help you understand the math involved in making this calculation.

http://www.tjsnow.com/manuals/tjsnow/Rocker_Arm_Force_Calc.pdf

I hope it helps!

-- Sam Snow (2snows@mailandnews.com), April 03, 2001.