Looking for Book on Forces

[chancey]

I am a fairly new tool designer who is looking for a good book on calculating forces. I design nice fixtures using the 3-2-1 method but I always wonder about the clamp I chose or how is that hardened A2 pin going to hold up. Basically I am looking for something with cutting forces, shear strength of materials including tools steels, & clamping forces to offset cutting forces. I've gone back to my text books but they just are not giving me what I want-real world & understandable. I do own the machinerys handbook (and use it quite often) but It is to convoluted and I have a hard time relating my situations in an understandable way? Any suggestions would be greatly appreciated.

 

[mloew]

Chancey,

Any decent undergraduate text on Statics should be a good start.

Here is a link to a listing from Amazon.com:

http://www.amazon.com/exec/obidos/s...words=Statics/ref=br_sub_/103-5864294-0633444

I used an earlier version of this text:

Vector Mechanics for Engineers, Statics
by Ferdinand P. Beer, E. Russell, Jr Johnston, Elliot R. Eisenberg, George H. Staab, Ferdinand Beer, Jr., E. Russell Johnston, Elliot Eisenberg, George Staab
Publisher: McGraw-Hill Science/Engineering/Math; 7th edition (June 4, 2003)
ISBN: 0072930780


Good luck.



Best regards,

Matthew Ian Loew
"Luck is the residue of design."
Branch Rickey

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

 

[Sparweb]

The thing about textbooks on statics is that in order to get the point across, they need to simplify the problem down to make it solvable. Whatever book you buy, it should be about 50% drawings, graphics, and free-body-diagrams, because without a clear picture, you cannot see where the loads come and go.

After a while drawing free body diagrams of tooling, you will likely find that most things you build are statically indeterminate (too many locations resisting a given force to give you a unique solution). Then you must get into mechanics of materials, and consider deflections. I would suggest Mark's Standard Handbook for Mechanical Engineers as a good desk reference, to be used like you use Machinery's handbook, but it is also just as large and difficult to read. There are more "user-friendly" books out there, like Mott, Applied Strength of Materials, and Shigley, Mechanical Engineering Design. These two just happen to be on my desk at the moment, there are a plethora of others. Shigley, at least, has "stood the test of time", since it was published in 1963, but I find it very comprehensive.


STF

 

[chancey]

Thanks you for your inputs-this is a nice little community we have here.

 

[brengine]

If you're looking for the forces generated during a machining process, I'd start with the cutting tool manufacturers. They're definetely going to know what forces are seen for a given work material dependent upon what the cutting tool geometry and material being used. This will also involve what cutting conditions the machinist uses (mainly tool diameter, rpm, feed rate, depth of cut).

It's been a few years, but Kenametal and Valenite had some pretty informative "Engineering Sections" to their catalogs (or maybe that was a separate catalog?). I'm sure you could call them and get one for free in a couple days as long as you tell them you're looking to buy

Ken

 

[Rich2001]

A source of information that you find helpful is this online book

http://claymore.engineer.gvsu.edu/eod/pdf/mechanic.pdf

Other references can be found at

http://claymore.engineer.gvsu.edu/eod/

Two other refrences are:
Shingley's "Mechanical Design"
"Roarks's Formulas for Stress and Strain"

 

[arto]

try Roark's "Formulas for Stress & Strain"

 

[chancey]

Thanks everyone-great site Rich2001-I'll be busy for awhile