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Dale_Rosema
23-Emerald III
23-Emerald III
January 11, 2024
Question

Bolt Clearance Hole - Assembly

  • January 11, 2024
  • 3 replies
  • 4274 views

Creo 9.0.7.0

 

***Disclaimer - (I know) do not put features in an assembly***

But, ...

I am putting a bolt clearance hole in a 2" square tube assembly. I thought that I used to be able to specify a depth of the clearance hole, but now my only options are (1) through all and (2) to a reference. Since it is a tube, I do not want to go all the way through both walls.

 

Did something change or am I missing something?

 

Dale_Rosema_0-1704977660498.png

 

3 replies

tbraxton
22-Sapphire II
22-Sapphire II
January 11, 2024

If you change the hole type to simple you will get the specify depth option. This behavior is the same in Creo 7 and Creo 9 on my machine.

 

tbraxton_0-1704979569489.png

 

Dale_Rosema
23-Emerald III
23-Emerald III
January 11, 2024

I noticed that too.

But why not with a clearance hole? Oversight?

tbraxton
22-Sapphire II
22-Sapphire II
January 11, 2024

It seems odd that it is missing for standard holes.  It would be a rare occurrence for me to use an assembly feature to add the hole, so I have no history for this scenario. If no one offers an explanation here I would open a call with support on this one.

23-Emerald III
January 11, 2024

Use the 'to reference' and select the inner wall of the tube. If your wall thickness changes, the hole will update to the "thru" depth. No need to determine the depth. Being a clearance hole, I would guess it is going through and not being a blind hole.

Dale_Rosema
23-Emerald III
23-Emerald III
January 11, 2024

That too is a valid option.

 

I seldom use "To Reference" but I did on this one, but the refence I used was the center planes on which the tube was built.

 

I was just surprised that I could pick a depth so I didn't know if something changed.

Patriot_1776
22-Sapphire II
January 11, 2024

Now remember, we ARE talking about a company (PTC) that doesn't know the difference between a "COARSE" thread (i.e. ISO or UNC) and a "COURSE" thread...🤣🤣🤣

coarse.png

13-Aquamarine
January 11, 2024

Since it is a clearance hole, I'm trying to think of a situation where you would need to specify a depth.  If you are going to tap the opposite side of the tube, you can create a tapped hole and add a top clearance and specify the depth of the clearance.

aputman_0-1704986753960.png

 

Dale_Rosema
23-Emerald III
23-Emerald III
January 11, 2024

Just a simple clearance for bolt coming through a washer and attaching to a custom loose nut on this inside.

Thanks,

13-Aquamarine
January 11, 2024

Right, so there is no reason to enter a specific depth.  Using the inside surface as a reference would be the proper way to do this.