How do I scaled sketch at the center which i also have to rotate about its center point?
Guys I am having difficulty with modeling in NX. there is this helical gear drawing attached which i am trying to make in NX. for which I need to resize curve in sketch which is projected by using offset curve command. but the difficulty is am unable to locate the scaled sketch at the center which i also have to rotate about its center point. Kindly suggest the solution.
the best way is to attacht the file, so I can see where it is going wrong.
When I see the drawing, I think there are different ways to get the model.
I always draw with Inventor, but I do have 2 years experince with NX.
The version I have at home is NX 8.5.
1. Sketch the profile
2. Within same sketch, use Pattern Curve set to 'Circular' & create 3 instances, 15º apart
3. Extrude the first 15º instance 45 mm
4. Extrude the second instance 95 mm
5. Scale the 1st extrude body to 75% using "Scale Body"
6. Scale the 2nd extrude body to 50% using "Scale Body"
7. Use "Through curves" to create your swept form
Why I chose to do it this way?
Mainly because I like to work directly from the numbers provided. 75% & 50% imply scale and so, working with a scale body gives me numbers that correlate, rather than calculating the proper offset. Not to mention, it makes things a lot easier later if you need to edit...
More in depth demonstration of the scaling method.
Scaling of the 1st extrusion body: (scale_1st_body)
Scaling of the 2nd extrusion body: (scale_2nd_body)
Final through curve mesh with the proper heights set, using a hexagon for simplicity sake: (scaled_bodies_tree2)
1. I created second sketch with offset with zero distance.
2. Used scale curve to resize it.
3. Used move curve to rotate about a point.
Now bout through curve, isn't it a surfacing command why is it used for solid modeling. There should be solid modeling command for creating the multi-section solid, is there any?