I am looking to make a groove following a curve projected on a cylinder that will be made in machining by a 4th axis on center or C axis on lathe. I tried several methods including winding without success.
The method that seemed the safest to me was to use a removal of material by scanning from a volume body because in tehoria it corresponds to what will happen in machining but again the result is not the right one.
As you can see from the attached images, the axis of the "tool" does not remain normal on the surface of the cylinder to be machined and there is no possibility of adjustment in the function.
In fact, your tool (a milling cutter is equivalent to having a rectangle or the points of tangency with the axis represent a rectangle.)
So a starting rectangle and an ending rectangle with two guide curves (one at the top of the rectangle and one at the bottom) and two guide curves made with the spiral function. This way, your milling will always be normal in the center of the cylinder.
Kind regards
PS: if it's not clear I can give you a simple example.
I think I understand but given my different attempts I doubt the result, moreover my trajectory seems to me to be difficult to achieve with the spiral function.
If you have a little time to do a simple test I'm all for it.
Good evening, I was thinking of pointing you to the waffle / winding function but the hollow is conical, damage... But if it can help you draw the shape flat and then roll it up to better control the toolpath. Why not.
I think I got the desired result thanks to the options in the scan menu. For these options to work properly, you have to fumble a little with the length of the "tool" otherwise there will be local surface twisting and SW crashes...
You should give us a little tutorial (if you have the time, as you're a super nice guy) because it's a very interesting case, especially with all the parts to be made in CNC.
@Tous you'll notice that SW isn't very good at helping us create full-CNC parts. Except of course if we do topological optimization or better generative design. ;-)
I had tried to make a trajectory of this type at one time (he is ~6 years old) and I had never managed to have a result similar to reality. I even kept my file as a puzzle for a shot or I would have a new idea to test it, but it never came,
as @ Zozo_mp says, a little tutorial would be really cool :-)
@ Zozo_mp that's exactly what I regularly see 10k€ the basic license and not able to offer this kind of function while the first towers with C axis continue to be more than 30 years old. Of course, changing the color of the icons is much more useful... Brief!
A tutorial I don't know but I made a series of captures and I also attach an example file.
So I start with a tubular part and I draw a 2D sketch in the face plane, then I use the projected curve function but this function has its limits because it projects, it doesn't wind. The problem with the winding function is that it only works with closed sketches. (If anyone has a solution to wind a trajectory I'm all for it)
Then I draw the part that will serve as a tool, that's where you have to make sure that it exceeds just enough of the workpiece otherwise it crashes. I draw it by doing an extrusion because a revolution doesn't work (while it says that it works in the function...) Importantly, you don't have to merge the result to get a separate volume size.
This is where the scanning material removal function is used by adjusting the parameters well as on the capture. As you can see in the description of the function, it should accept a body-tool made from a revolution, but it doesn't work. It's a shame because I don't see how to simulate the path of a shaped cutter.
Below is the result and a pass with a tool of different diameter. I tried to merge my two "tool bodies" to go into a single function but again it doesn't work so I do it in two steps.
Here I get the desired result but it's still a bit tinkering on some points such as the winding of the trajectory curve because projecting it doesn't allow you to cover more than 180° and the result is not controllable as with a real winding.
Good evening, I managed to do it using the surface warp.
As you said the warp only works with a closed tour, so that's what I did except that I keep only one side of the shape that I export in a 3D sketch via convert entity.
Here are the screems, I don't specify for the removal of material being there the same method as above.
With a view to the cut, we see that there is some doubt about the form, but we are getting closer;)
EDIT: And there you can make a trajectory that makes as many detours and backwards as you want on 360°
