INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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.

Jobs

Rules for Twisting Sheet Metal?

Rules for Twisting Sheet Metal?

(OP)
Does anyone have some rules? I want to make a simple 90 degree twist in some thin copper lead frames (0.8 x 1.5mm). Max twist per length? Does the cross section stay reasonably similar? Is this an ok process for volume production (200k-500k/year)

Similar to the image.

RE: Rules for Twisting Sheet Metal?

I think you can reasonably assume that rectangular sections at the ends of the helix remain planar and rectangular and don't change dimension, at least not much.
Given that assumption, you can compare the length of the helix along the straight center line between the rectangles' centroids, to the developed length of the edge at any corner.
If the difference is not larger than the minimum elongation for the material, you should be able to form the helices without cracking the material.

Mike Halloran
Pembroke Pines, FL, USA

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!


Resources


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