Inventor General Discussion

## Inventor General Discussion

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Posts: 2,471
Registered: ‎09-13-2011
Message 1 of 7 (559 Views)

# Curve Driven Pattern - Multiple Tangent Curves?

559 Views, 6 Replies
10-22-2012 10:58 AM

Is there a way to use the curve driven (rectangular) pattern referencing two tangent curves (an arc and a tangent line). I'd like to be able to create this pattern of slots in one pattern, othrwise I'll have to make two cut features at each end and use one pattern for the straight and another for the curve.

Mike (not Matt) Rattray

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Registered: ‎04-20-2006
Message 2 of 7 (554 Views)

# Re: Curve Driven Pattern - Multiple Tangent Curves?

10-22-2012 11:44 AM in reply to: mrattray

Depends

are they the same distance appart if the curve was layed flat?

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Message 3 of 7 (551 Views)

# Re: Curve Driven Pattern - Multiple Tangent Curves?

10-22-2012 11:48 AM in reply to: JDMather

Yes, I would like them to be evenly spaced along the "flat" for the sake of simplicity, but they can be anything because the mating part is being designed and made at the same time.

Mike (not Matt) Rattray

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Message 4 of 7 (541 Views)

# Re: Curve Driven Pattern - Multiple Tangent Curves?

10-22-2012 12:54 PM in reply to: mrattray

Just for clarity - the part doesn't have to be something folded from a flat - I just wanted to make sure the distance measured along the curve rather than chord center-to-center distance.

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Message 5 of 7 (539 Views)

# Re: Curve Driven Pattern - Multiple Tangent Curves?

10-22-2012 01:05 PM in reply to: JDMather

Of course the fact that's it's a flat piece of sheetmetal doesn't matter.

When these are done in AutoCAD they're defined by the angles between their chords. Nobody cares how they get defined in Inventor, though, what is important is that the distances and number of instances can change automatically to reflect changes to those curves. The length of the line and the circumferential length of that arc (and possibly the radius) will be changing.

Part file is attached to this post. Before you jump on me for it, I'm right in the middle of trying to get that ugly Sketch11 for the face sorted.

Mike (not Matt) Rattray

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Registered: ‎04-20-2006
Message 6 of 7 (529 Views)

# Re: Curve Driven Pattern - Multiple Tangent Curves?

10-22-2012 04:16 PM in reply to: mrattray

Examine technique and then discard (edited in student version).

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Message 7 of 7 (509 Views)

# Re: Curve Driven Pattern - Multiple Tangent Curves?

10-23-2012 05:08 AM in reply to: JDMather

Ah, that's exactly what I needed. Now that I'm looking at this, I think I remember seeing this trick in your white paper.

Thank you, JD!

Mike (not Matt) Rattray

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