topic Re: Line Path Pattern in Inventor Forum

Line Path Pattern

serhat_akpinaar — Tue, 23 Mar 2021 17:05:06 GMT

Hello.

I have a sketch, I want to throw a point pattern on this sketch at certain intervals. I'll assemble the chain with this pattern. Is there a way to do this ?

Re: Line Path Pattern

JDMather — Tue, 23 Mar 2021 19:23:20 GMT

Attach your *.ipt file here.

Re: Line Path Pattern

johnsonshiue — Tue, 23 Mar 2021 21:15:17 GMT

Hi! Path pattern is only available at feature level, not at sketch pattern level. You can create the workpoint pattern like you showed in the image and project the points to a 2D sketch.

Many thanks!

Re: Line Path Pattern

SBix26 — Wed, 24 Mar 2021 00:09:03 GMT

The problem you will have, though, is that you want the distance between points to be the chordal distance, but Inventor's pattern feature uses the distance along the path. You will have to make your path using line segments around the curve (change the arc to construction).

Sam B
Inventor Pro 2021.2.2 | Windows 10 Home 2004
LinkedIn

Re: Line Path Pattern

serhat_akpinaar — Wed, 24 Mar 2021 05:09:58 GMT

Hi to all,

You can find the sample video at the link below.

https://www.youtube.com/watch?v=Y5mJqJ1fsyc&ab_channel=3DParametricSolidModelDrawing

It belongs to the model .ipt is attached.

Re: Line Path Pattern

johnsonshiue — Thu, 25 Mar 2021 00:13:24 GMT

Hi! There is actually a way around this. You can leverage pattern of pattern. Please take a look at the attached part.

Many thanks!

Re: Line Path Pattern

serhat_akpinaar — Thu, 25 Mar 2021 06:48:41 GMT

Johnson, thank you for your concern.

But the measurements found in the raduses do not come as exactly 25,000 mm.

Re: Line Path Pattern

n_Sovljanski — Thu, 25 Mar 2021 10:12:06 GMT

Hi,

As I can see you need exactly 25.4 mm all along path. If you use "Spacing" option from rectangular pattern this will apply on selected curve. That is meaning arc length is 25.4 but distance between points is 25.1482mm.

I will rearrange your sketch and and posted later .

Re: Line Path Pattern

n_Sovljanski — Thu, 25 Mar 2021 10:41:32 GMT

Hi, here is modified part in attachment and explanation.

First I converted all lines and arc from sketch 1 in construction lines. I have drawn new sketch above. Length for first line must be floor(d44 / Step) * Step (you will see in parameters what is what). Then I have drawn new 5 lines with length = 25.4mm. Then I added new driven dimension (d79=23,099mm) for further calculation. Then I have drawn with length d80=floor(( d0 - d79 ) / Step) * Step. And so on.

Two things are matter:

Straight lines must be n x 25.4mm.

Lines above arcs must be 25.4 mm length with Coincident constraints on both ends.

I hope this helped.

Re: Line Path Pattern

johnsonshiue — Thu, 25 Mar 2021 18:49:50 GMT

Hi Serhat,

I thought you would like the distance between two workpoints to be 25mm consistently right? There is no way to make the arc length the same as the chord length. You can only get either.

Many thanks!