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Modeling a groove. (#1538)
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tarmer  
#1 Posted : Friday, August 22, 2008 7:18:16 PM(UTC)
tarmer

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Posts: 55
First off I'm using ViaCAD 2D/3D v6. I was wonder what the best way to model a groove in a part. An example might be that which is used to house an o-ring on a shaft. A similar operation would be a channel or groove around an oddly shaped part such as a rectangler block. Specifically how can a feature such as this be added after a number of operation have been don to the part. Anyway I was just wondering.

Thanks,
Toby
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unique  
#2 Posted : Saturday, August 23, 2008 6:14:35 AM(UTC)
unique

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Hi Toby,

There are many ways again to go about this, I may have taken a long approach given im very new to VC. In your example you could try the following:-

Create the shaft
Create a single curve in position on the OD of the shaft
Extrude a surface to the correct width
Thicken the surface to the correct depth and make a ring solid
Boolean the part from the shaft

OR

Instead of creating a surface to thicken you can create two circles, then extrude them solid to the width you need and then boolean ??

I hope we can have an area on the forum for this type of process at least that way the program gets properly tested and everyone learns !!...just a thought:cool:
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jdi000  
#3 Posted : Saturday, August 23, 2008 7:21:56 AM(UTC)
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Hi, Toby

If you are using specific o-ring or groove shapes over and over. You could also draw the grooves 2d profile and use the lathe tool on cylinders the subtract. Solids like blocks you can offset edges to create a path and drag your 2d in and rotate align as needed, then sweep the groove profile with one rail sweep ---> use sweep perpendicular curve ext. , then subtract. You can save the profiles as a symbols and drag in and snap where you need it if you use the same one a lot. Just another way to try.


Jason
ViaCAD b801
Vista
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tarmer  
#4 Posted : Sunday, August 24, 2008 7:59:58 AM(UTC)
tarmer

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Thanks to both of you, Jason and Paul. I tried it and made it work. I was glad to see that it could also be used to create the groove on a flat surface as well.

As a thought a possible tool suggestion would be one where you select the path then profile and the program then adds or subtracts the profile from the object without you having to go through the extrude, and boolean steps manually. It may save some steps. ;)

Thanks!
Toby
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Steve.M  
#5 Posted : Sunday, August 24, 2008 9:06:51 PM(UTC)
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Originally Posted by: tarmer Go to Quoted Post
A similar operation would be a channel or groove around an oddly shaped part such as a rectangler block.
Creating a grove on a surface as you mention can be done by projecting the path of a grove onto the surface. The path on the surface can then be used to sweep the groove shape, or if it is just a rounded groove (as for a ball nose cutter path cutout) then you can use Pipe on the projected path then boolean out.
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tarmer  
#6 Posted : Wednesday, September 3, 2008 10:32:56 PM(UTC)
tarmer

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Stev.M Your wavy surface example looks neat but begs a dumb question: How do you project the path along the surface?

Thanks
Toby
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unique  
#7 Posted : Thursday, September 4, 2008 5:41:58 AM(UTC)
unique

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Originally Posted by: tarmer Go to Quoted Post
Stev.M Your wavy surface example looks neat but begs a dumb question: How do you project the path along the surface?

Thanks
Toby


Toby,

As Steve said the curve is projected onto the surface, then a pipe is made using the curve, and finally a boolean ??

HTH
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tarmer  
#8 Posted : Thursday, September 4, 2008 7:18:45 AM(UTC)
tarmer

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Paul

The part I don't get is how to project the curve onto the surface.

Toby
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unique  
#9 Posted : Thursday, September 4, 2008 9:22:01 AM(UTC)
unique

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Posts: 591
Originally Posted by: tarmer Go to Quoted Post
Paul

The part I don't get is how to project the curve onto the surface.

Toby


Hi Toby,

Project to surface is your friend here. It's in the toolset to the right of infinite plane......then just follow the prompts ;)

Once you have the curve 'on' the surface create a pipe with groove diam OD and zero ID (solid) then boolean last...youre done.

HTH
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