Inventor General Discussion

Inventor General Discussion

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Active Member
leweaver
Posts: 6
Registered: ‎10-28-2012
Message 1 of 19 (2,777 Views)
Accepted Solution

Creating a hole on a curved surface

2777 Views, 18 Replies
10-29-2012 12:05 AM

Hello All,

 

I am trying to create a simple hole with threads for a set screw on a hub. I cannot figure out how to select the tangent plane I need to create the sketch. I'm using Inventor 2013 and have attached the file below. All suggestions are welcome! Thanks.

Sketch1 is not constrained.

I recommend you read this document http://home.pct.edu/~jmather/SkillsUSA%20University.pdf

see attached file for one method.

OK, easy constraints.  You already have the workplane there, so constrain the flat top of the set screw to the workplane (with an appropriate offset), then constrain the axis of the screw to the axis of the hole.  Finished.

 

By the way, why did you extrude the hole in the hub and then thread it, instead of just making it a threaded hole feature?  You have the sketch there with the hole center located, just make it a hole to the center bore of the hub.  Then it will annotate correctly on your drawing.

 

I also looked through the rest of your model-- you haven't had any training, have you?  Please read the document that JD mentioned in his post-- your sketches are not constrained, so your results are probably not what you want-- look at your four countersunk holes...

Here's another example to go with JD's.  It's all constrained and easily and predictably editable.  Your original hub has four countersunk holes that are a mystery since they are threaded, and they're too close to the hub.  A #5 flat-head screw would run into the hub in that position.  Pull the EOP up to the top and go through it feature by feature; ask if anything doesn't make sense to you.

*Expert Elite*
JDMather
Posts: 28,253
Registered: ‎04-20-2006
Message 2 of 19 (2,753 Views)

Re: Creating a hole on a curved surface

10-29-2012 05:11 AM in reply to: leweaver

Sketch1 is not constrained.

I recommend you read this document http://home.pct.edu/~jmather/SkillsUSA%20University.pdf

see attached file for one method.

Please mark this response as "Accept as Solution" if it answers your question.
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Active Member
leweaver
Posts: 6
Registered: ‎10-28-2012
Message 3 of 19 (2,698 Views)

Re: Creating a hole on a curved surface

10-29-2012 08:12 PM in reply to: JDMather

Thanks, that worked great! Another question... After the hole/cutout has been created, should there be any problems assembling items in it? I created the hole on the hub itself and tried creating the hole in assembly. When I go to insert the set screw, it will select every hole in the hub except the one on the tangent work plane. Any advice?

*Expert Elite*
JDMather
Posts: 28,253
Registered: ‎04-20-2006
Message 4 of 19 (2,672 Views)

Re: Creating a hole on a curved surface

10-30-2012 05:44 AM in reply to: leweaver

Create an axis through the center of the hole (if one of the Origin axis does not already go through the centerline).

Create a workpoint at the intersection the axis and the workplane.

The hole, workpoint and workplane can be used to place fastener.

 

Attach your assembly here if you can't figure it out.

Please mark this response as "Accept as Solution" if it answers your question.
-----------------------------------------------------------------------------------------
Autodesk Inventor 2015 Certified Professional
Autodesk AutoCAD 2013 Certified Professional
Certified SolidWorks Professional
Inventor Professional 2015-SP1 64-bit
http://www.autodesk.com/edcommunity
http://home.pct.edu/~jmather/content/DSG322/inventor_surface_tutorials.htm
Active Member
leweaver
Posts: 6
Registered: ‎10-28-2012
Message 5 of 19 (2,590 Views)

Re: Creating a hole on a curved surface

11-19-2012 09:13 PM in reply to: JDMather

I still could not figure out how to do this... I have attached the file. The set screw is not the one that I plan to use but I just needed a simular one to work with. Thanks!

*Pro
sbixler
Posts: 1,968
Registered: ‎09-15-2003
Message 6 of 19 (2,574 Views)

Re: Creating a hole on a curved surface

11-20-2012 03:35 AM in reply to: leweaver

You forgot the parts...

Active Member
leweaver
Posts: 6
Registered: ‎10-28-2012
Message 7 of 19 (2,550 Views)

Re: Creating a hole on a curved surface

11-20-2012 07:26 AM in reply to: sbixler

I attached the assembly again.

*Pro
sbixler
Posts: 1,968
Registered: ‎09-15-2003
Message 8 of 19 (2,547 Views)

Re: Creating a hole on a curved surface

11-20-2012 07:31 AM in reply to: leweaver

The assembly file specifies how the parts are put together, but it doesn't define the parts.  We need the component files (.ipt), too.

Active Member
leweaver
Posts: 6
Registered: ‎10-28-2012
Message 9 of 19 (2,541 Views)

Re: Creating a hole on a curved surface

11-20-2012 07:52 AM in reply to: sbixler

Ok, got it. The set screw I got from the conent center so I just attached the hub. Sorry for the mix up!

*Pro
sbixler
Posts: 1,968
Registered: ‎09-15-2003
Message 10 of 19 (2,522 Views)

Re: Creating a hole on a curved surface

11-20-2012 09:36 AM in reply to: leweaver

OK, easy constraints.  You already have the workplane there, so constrain the flat top of the set screw to the workplane (with an appropriate offset), then constrain the axis of the screw to the axis of the hole.  Finished.

 

By the way, why did you extrude the hole in the hub and then thread it, instead of just making it a threaded hole feature?  You have the sketch there with the hole center located, just make it a hole to the center bore of the hub.  Then it will annotate correctly on your drawing.

 

I also looked through the rest of your model-- you haven't had any training, have you?  Please read the document that JD mentioned in his post-- your sketches are not constrained, so your results are probably not what you want-- look at your four countersunk holes...

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