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Good afternoon,

 

I am trying to model a circular ring with (6) 3/8" holes. I need the ring to have Inside Diameters of 5,4,3,2 inches. I need to be able to switch through them quickly in the assembly. My boss doesn't have a specific dimension on what he wants so thats why I am asking how to give him those options of have those multiple dimensions. The way you see it now is I.D. = 5" & O.D. 6". I need for the set screws to stay in place as the diameters shrink. I tried doing this with different configurations but it wouldn't work, unless I did something wrong. Any advice?


Categories: Modeling and Assemblies, Parts and Features

Comments
Last comment By: Matt Peneguy   Thu, 14 Sep 2017 17:45:14 GMT
Re: Multiple Dimensions in a circle/configurations

It will be easier to help you if you post your model.

By: Josh Brady  Wed, 13 Sep 2017 18:07:15 GMT
Re: Multiple Dimensions in a circle/configurations

First thing that comes to mind is maybe the appropriate dimensions weren't set to configuration specific?

Config specific dim.png

By: Jason Uren  Wed, 13 Sep 2017 18:22:17 GMT
Re: Multiple Dimensions in a circle/configurations

As Josh said, without seeing the model all we can do is guess, but I'll give it a shot.  Assuming the outside diameter stays the same, and also assuming that the set screws you're referring to are the small holes on the flat face, then the sketch that you used to create the first hole should be dimensioned from the outside edge.  I'm also assuming you created one hole, and then placed the rest with a Circular Pattern.  I know that's a lot of assumptions, but it's the best I can do right now.  Does this help?

By: Glenn Schroeder  Wed, 13 Sep 2017 18:25:50 GMT
Re: Multiple Dimensions in a circle/configurations

Hi,

 

If your setscrews are on OD, then please check the model attached.

 

 

 

 

 

As I can't able to attach the solid part file, I have attached the images.  Please find them.

 

Thanks

Naga Ranjithkumar A

By: Naga Ranjith Kumar Addagalla  Wed, 13 Sep 2017 18:36:49 GMT
Re: Multiple Dimensions in a circle/configurations

Here is the model

By: Nathan Fortier  Wed, 13 Sep 2017 18:39:38 GMT
Re: Multiple Dimensions in a circle/configurations

I also forgot to mention that the ring has to be 1/2 inch thick

By: Nathan Fortier  Wed, 13 Sep 2017 18:42:02 GMT
Re: Multiple Dimensions in a circle/configurations

I hope the part attached might be helpful.  Please check it.

By: Naga Ranjith Kumar Addagalla  Wed, 13 Sep 2017 18:45:43 GMT
Re: Multiple Dimensions in a circle/configurations

The model helps.  I edited the sketch you used to create the ring.  I deleted the thickness dimension and replaced it with one for the ID.  I then exited the sketch, clicked on the feature in the tree to show the dimensions in the graphics area, right-clicked on the new ID dimension, and choose "Configure dimension" from the drop-down.  That brought up the simplified design table where I created a configuration for each of the ID's you said you wanted, and assigned the value for each.  And the way you dimensioned the small holes they don't move in relation to the OD.  Is this what you had in mind?

 

 

By: Glenn Schroeder  Wed, 13 Sep 2017 18:49:37 GMT
Re: Multiple Dimensions in a circle/configurations

Could you send me the part? I want to take a look at the different steps and features you used. I haven't created a part like before and I was having issues with keeping the screw holes moving with the other dimensions.

By: Nathan Fortier  Thu, 14 Sep 2017 11:21:59 GMT
Re: Multiple Dimensions in a circle/configurations

Thank You for taking the time to do that. Unfortunately it has to be 1/2" thick at all times. I might of not explained it enough. As the I.D. shrinks, The O.D. needs to go with it to keep it a half inch thick at all times. I also need the screw holes to move with it.

By: Nathan Fortier  Thu, 14 Sep 2017 11:27:56 GMT
Re: Multiple Dimensions in a circle/configurations

The way you define things has a huge amount to do with whether or not you are successful.  Location of things should be defined according to your design intent.

Your 3D sketch for location of the slot is not constrained.

You defined the location of the set screw holes in relation to something other than what the design intent is.

Use construction geometry if needed to get to your design intent.  That's what it's for.

Sorry, I have 2017 so I can't post the model.  Well, I can, but it won't help you.

Fully defined 3D sketch:

 

Set screw hole location, defined in relation to 3/8 hole. Center of patter coincident relation with origin, not zero value dimensions:

By: Josh Brady  Thu, 14 Sep 2017 12:28:14 GMT
Re: Multiple Dimensions in a circle/configurations

I actually need to be able to change the dimensions on the fly and it follow with it. The 6 holes, the screw holes etc.

Example...I may need to change it from 3" to 4-9/16" back to 3.25. How can I do that? All with the ring staying at half inch thick.

By: Nathan Fortier  Thu, 14 Sep 2017 12:31:30 GMT
Re: Multiple Dimensions in a circle/configurations

I thought that a configuration would be the way to do it. Is there any possible way to change the dimension on the fly to any random dimension input and keep all the other features to follow?

By: Nathan Fortier  Thu, 14 Sep 2017 12:47:02 GMT
Re: Multiple Dimensions in a circle/configurations

Nathan Fortier wrote:

 

Thank You for taking the time to do that. Unfortunately it has to be 1/2" thick at all times. I might of not explained it enough. As the I.D. shrinks, The O.D. needs to go with it to keep it a half inch thick at all times. I also need the screw holes to move with it.

 

That's a lot different from what I thought you wanted.  Here's one way to do what you just said:

 

1.  Edit the sketch you used to create the small holes.  Remove all the dimensions defining the location of the first hole, place a fully defined construction line as shown below and define your hole position in relation to it.  Delete all the holes created with the sketch pattern (this might not be necessary, but I hate sketch patterns).  Exit the sketch.

 

2.  Drag the Circular Pattern you used to create the other Hole Wizard holes down below the small hole, edit it, and add the small hole feature.

 

3.  Now you can use the method I described above yesterday to show the dimension for the OD, right-click on it, choose "Configure Dimension", and use the table to create your other configurations and assign them the desired values.

 

4.  Now when you change the OD the holes will stay in position.

 

Is this the result you want?

By: Glenn Schroeder  Thu, 14 Sep 2017 12:47:14 GMT
Re: Multiple Dimensions in a circle/configurations

you shouldn't need to use any configurations if you dimension properly. dimension your ID, dimension from your ID to the OD (not centerpoint) then add a construction circle with points for your tapped holes and dimension that to be whatever fixed dimension from the OD you need. apply simply equations if necessary, but you should be able to update your ID on the fly and have everything else follow without issue.

By: Newell Voss  Thu, 14 Sep 2017 12:52:20 GMT
Re: Multiple Dimensions in a circle/configurations

use this scheme

2017-09-14_8-22-59.jpg

Everything will maintain its relations allowing you to adjust the ID on the fly with a simple rebuild

By: Newell Voss  Thu, 14 Sep 2017 13:25:23 GMT
Re: Multiple Dimensions in a circle/configurations

I hope equation(with variables) based part will be suitable for your requirements.  Have you tried in that direction?

By: Naga Ranjith Kumar Addagalla  Thu, 14 Sep 2017 16:51:26 GMT
Re: Multiple Dimensions in a circle/configurations

No equations are necessary.

By: Josh Brady  Thu, 14 Sep 2017 17:36:49 GMT
Re: Multiple Dimensions in a circle/configurations

Nathan Fortier,

Have you tried Glenn's suggestion?  I think some others have brought up some good points, but Glenn's answer seems to be the most comprehensive and correct to me.  If you agree please mark it as such.  That way if someone else searches the forum and finds this thread, the correct answer will be marked for them.

By: Matt Peneguy  Thu, 14 Sep 2017 17:45:14 GMT
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