Information about Graph Tool/Command

15 Apr, 2020 06:26 AM

Hello team,

Due to the quarantine I'm enhancing my Creo skills replicating SW models, but I came across with two models that I'm not able to do at all. In SW they're easy to do because it has a very powerful Wrap tool that lets you engrave and emboss almost every geometry in almost every surface.

So I'm asking for guidance to model them in Creo, I've tried to use wrap, projection and nothing, even Graph with Sweep command following a tutorial but the video begins sketching the graph with the base feature already done so I'm not getting the same results because I'm missing info and also don't know how to use graph, or maybe I have to turn on/off some configurations.

One is a barrel/cylinder cam that the cut is uniform along the trajectory (with no distortions in SW) but in Creo the section is deformed in height and/or width depending on the trajectory section, and the other one is a muffler with a special 7-hole pattern wrapped around the surface at a certain angle.

here are the dwgs, I'll appreciate any help

Rasesh Palav

Apr 19, 2020

Modeled in Creo Parametric 7.0.0.0, we need to wrap, offset with expand feature option, pattern, remove and reference pattern options....will work on the cylinder cam example and update you....Its possible in Creo but not as straightforward as SolidWorks!

Luis Rubio

Apr 20, 2020

thank you and I'll wait for your update for the cylinder cam, I'm going to try make it following your steps.

Rasesh Palav

Apr 22, 2020

Luis Rubio thank you and I'll wait for your update for the cylinder cam, I'm going to try make it following your steps.

I got the desired result using wrap and sweep cut in Creo, not sure why you are not getting the desired output with wrap for this part.

Enrique Gandaria

Apr 23, 2020

Used Surfacing Technique. Wrap the curve. Copy External Surfaces. Trim copied surface one way. Trim copied surface another way. Thicken the resultant surface with a cut.

Might be a way to do it with a sweep if I can control the x-direction.

Luis Rubio

Apr 23, 2020

O thanks Enrique for your input, I think you're method is the best one because I made it like Mr. Rasesh Palav (wrap & sweep cut) but even in his model images you can see the bottom surface of the curve with the smallest radius (inner) lifted up or deformed and I'm sure that on the sides the depth of the cut is different than on the front and back. If you Mr. Palav can make a several section views at a different distances and in the horizontal and vertical directions just to see if the depth of cut is constant & the bottom surface is uniform. Thanks a lot both of you for your help.

Enrique Gandaria

Apr 23, 2020

Bogdan M

May 7, 2020

Luis Rubio O thanks Enrique for your input, I think you're method is the best one because I made it like Mr. Rasesh Palav (wrap & sweep cut) but...

Hi Luis,

I try this method and worked for me very well. (sorry for the metric units).

Revolve.

2.Sketch base on your drawing. The sketch was made on a plan (on the fly) tangent to the revolve.

3.Surface Sweep using the sketch and and the dimensions of the cross section.

Tip. Cap the ends of the sweep.

4.I use Toroidal Bend feature to generate the path. The toridal bend is made on 360 degrees.

5.Solidify with material remove to generate the new surface.

6.I added rounds at the end

I upload the 3D model. Link

Please let me know if you have questions and I'll be glad to help.

Bogdan

Bogdan M

May 7, 2020

Luis,

For the second model is a quick and easy way to do it. (same, sorry for the metric units)

Revolve

2. I use Shell for the inside. You can make it in the same feature with revolve.

3. I did a hole on the cylindrical surface and as Offset References I pick two planes, in this case TOP and SIDE. For the Top I put 0 (zero) degrees angel and form the Side the dimension from your drawing.