http://www.youtube.com/watch?v=l6bdGYldFPw
In the video, it says the sketch is fully constrained, yet http://puu.sh/24tJX shows there are still degree's of freedom.
I'm really confused and very new to inventor, just tried it out coming from solidworks.
What do the green lines mean, if not unconstrained lines?
Solved! Go to Solution.
Solved by SBix26. Go to Solution.
Solved by SBix26. Go to Solution.
Looks as if you found a way to fool Inventor's sketcher. But since you wouldn't actually model something that way, it's just for fun, right?
Sam B
Inventor 2012 Certified Professional
Please click "Accept as Solution" if this response answers your question.
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Inventor Professional 2013 SP1.1 Update 1
Windows XP Pro 32-bit, SP3
HP EliteBook 8730w; 4 GB RAM; Core™ 2 Duo T9400 2.53 GHz; Quadro FX2700M
SpaceExplorer/SpaceNavigator NB, driver 3.7.18
still waiting for a foreshortened radius dimensioning tool in Drawing Manager
no, this was for an actual model? what would you do differently, this exact thing has worked for me in the past.
Im trying to mock up an enigma machine rotor.
http://en.wikipedia.org/wiki/File:Enigma-rotor-pin-contacts.jpg
You would normally create the basic disk and sketch one "tooth" and then make a polar array of the tooth. Much more robust, much easier to control. You will also find that Inventor won't like your sketch as it currently is, because arraying sketch elements doesn't connect them reliably. You'll have to place sketch points at each intersection, which could get a little tedious.
Post your next attempt here if you're getting stuck. Changing systems can be challenging, but plenty of expertise here to help out, including many who have made the same transition that you're making.
Sam B
Inventor 2012 Certified Professional
Please click "Accept as Solution" if this response answers your question.
-------------------------------------------------------------------------------------
Inventor Professional 2013 SP1.1 Update 1
Windows XP Pro 32-bit, SP3
HP EliteBook 8730w; 4 GB RAM; Core™ 2 Duo T9400 2.53 GHz; Quadro FX2700M
SpaceExplorer/SpaceNavigator NB, driver 3.7.18
still waiting for a foreshortened radius dimensioning tool in Drawing Manager
@learn001 wrote:
I'm really confused and very new to inventor, just tried it out coming from solidworks.
That is not the correct way to model in SolidWorks either.
Pattern Features, not sketches (where appropriate).
In SolidWorks View>Show Sketch Relations.
What do you see?
The CADWhisperer YouTube Channel
Finally worked it out, unsure what a polar array was, but a friend of mine had a go, and worked out it works correctly if you dont have the circle as a construction, draw a tooth, trim it, then circular pattern the tooth.
Then you can add the construction circles back on for dimensioning.
One of the reasons that I wanted the teeth drawn on the sketch, is I was hoping to use the teeth in a top down or skeleton model of my assembly, so I can work out the mechanism for driving it from the keyboard.
Would the this work, or am I still just stubbonly trying to make inventor do things "incorrectly"
What we're suggesting is that you wait to circular (polar) pattern the tooth until you've created one as a feature or set of features, not in your sketch.
Sam B
Inventor 2012 Certified Professional
Please click "Accept as Solution" if this response answers your question.
-------------------------------------------------------------------------------------
Inventor Professional 2013 SP1.1 Update 1
Windows XP Pro 32-bit, SP3
HP EliteBook 8730w; 4 GB RAM; Core™ 2 Duo T9400 2.53 GHz; Quadro FX2700M
SpaceExplorer/SpaceNavigator NB, driver 3.7.18
still waiting for a foreshortened radius dimensioning tool in Drawing Manager
GOOD LUCK with figuring out how the key link in an Ingma works. It took the boffins at Bletcly Park quite some time.
Unsure what you mean by key link, but the whole machine is well documented as long as you can find the resources.
so using a simple disc
a tooth
and a circular pattern
http://puu.sh/24ZVx
Is this what you mean? if so, how can I dimension it so its driven by the outer diameter, the tooth height, and the angle based on the fact that there are 26 teeth, and they link to the next one?
Feature 1: plain disk, 90 mm diameter, thickness as you please.
Feature 2: one tooth profile cut through the disk
Feature 3: circular pattern of Feature 2, 26 copies, axis = origin Z axis
See attached image. Inventor is quite capable in the mathematics field, so if you just ask it to work out 1/26th of a circle it will be happy to do so. If you create user parameters for the number of teeth and the tooth height, and incorporate these in feature parameters, you can have a very flexible and robust part.
Sam B
Inventor 2012 Certified Professional
Please click "Accept as Solution" if this response answers your question.
-------------------------------------------------------------------------------------
Inventor Professional 2013 SP1.1 Update 1
Windows XP Pro 32-bit, SP3
HP EliteBook 8730w; 4 GB RAM; Core™ 2 Duo T9400 2.53 GHz; Quadro FX2700M
SpaceExplorer/SpaceNavigator NB, driver 3.7.18
still waiting for a foreshortened radius dimensioning tool in Drawing Manager