×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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!
  • Students Click Here

*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

Jobs

How to make a pattern pitch grow

How to make a pattern pitch grow

How to make a pattern pitch grow

(OP)
I'm guessing this isn't going to be possible...

I'm using a triangle pattern within a boundary, and I need for the pitch
to increase with each instance. So the pitch needs to grow from the center
of the pattern outwards. I work with rubber molds, and the reason for this is
to accommodate matching up to a hot mold that has thermal expansion. For instance,
the pitch may be a static 1" when it's cold, but 1"x% when it's hot.The % growth is
based on the distance from the instance to the center of pattern. Hopefully that
makes sense.

nx 8.5

thanks!

RE: How to make a pattern pitch grow

Hi akparsley,

Please Check with Pattern Increment Option in pattern feature.



Regards,
Navin

RE: How to make a pattern pitch grow

(OP)
Pattern increment is to modify the feature, not the pattern. So I could make each hole bigger than the last, but this
doesn't do anything for incrementing the pitch.

RE: How to make a pattern pitch grow

If you are dealing with thermal expansion, wouldn't the entire part grow? If so, it seems that "scale body" might work for you.

www.nxjournaling.com

RE: How to make a pattern pitch grow

(OP)
@navin99669
Thanks, but this is a boundary fill pattern. With a boundary fill, I can pick "triangle" layout, which works really nice for a static pitch. You don't get the option to increment spacing as you do with a standard linear pattern (that you have shown).
See the attachment for my dialog.

@cowski
My tool isn't the one getting hot, it just has to mate to the hot mold. So when the mold is cold, it would have a simple pattern. But when it's hot, the holes all spread apart from center (~.0015/"). So my tool's pattern needs to accommodate that expansion.

Thanks to you both for the efforts!

RE: How to make a pattern pitch grow

(OP)
Problem solved...
I was over thinking this. All I needed was for the pitch to be (i.e.) 1"x% of the original static pitch. This will make each row grow from center as desired.

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