Contact US

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Projection welding nuts

Projection welding nuts

Projection welding nuts

I need to know what the force required for projection welding an M14 and M12 nut is.  Is this something that could be done with air cylinders ,festo etc.  As of now I am only familiar with projection welders that are stand alone wiht bowl feeder etc.  I would like to incoperate this process within our current clamping welding procedure.  Making it fully automated.  Any information would be gratly appreciated.

RE: Projection welding nuts

The force required for set-down will depend on what type of weld nut you are using, as well as the dimension of the pilot height (if it is a piloted design).  I recommend using DaimlerChrysler Corporation Process Standard No: PS-1804, WELD NUTS - PROJECTION WELDING as a guide for this type of process-- it gives details on suitable weld schedules, requirements for push-off forces, torsional strength, etc.

As an example, for a TYPE EE piloted projection weld nut (6 projections), Property Class 10, the weld schedule would should look like this:

                  Electrode Force     Weld Time     Current
                  Newtons (Lbs)        cycles       K-amps

M12 (1.19 mm pilot)  6670 (1500)      11-13         22-24

    (1.178 mm pilot) 8900 (2000)      16-20         23-25

M14 (1.19 mm pilot)  8900 (2000)      14-16         25-27

    (1.78 mm pilot)  10680 (2400)     19-23         26-28

I guess everything is relative, but the forces aren't that high, though I don't claim to be an expert in pneumatic cylinders.  Good luck with your project.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close