project sketch on surface

[Meteor02]

hello to all I have to get ribs on a curved surface and I can't do with projecting curves or winds, someone knows how to do it?

until now I managed to do it only by creating a plan and making an extruded cut but extruding with disform the result is not satisfactory. I attach images to better understand. Thank you very much

 

[Tantocattivo]

for such a specific problem, if you do not attach the file you do not understand well what may be the problem, much less the solution.

 

[Meteor02]

ok I try to insert the file. the problem is that having the sketch on the floor as the surface moves away deforms the groove, if increase the deformation increases. I would need to lay the sketch on the surface on which to make extruded cut

 

[Tantocattivo]

projecting the sketch, you get what happens to the left, but you want what happens to the right, right?

 

[Meteor02]

exactly, but then to the extruded cut I have to give a sform of 2nd and if they select as a starting point not the sketch plan but the surface and as a point of arrival another obseptic surface does not allow me to give the degrees of disform. while if I select the sketch plan as a starting point and the surface as a final point lets me give the deformed but deforms away from the plane.

 

[Tantocattivo]

is there another problem, the cut extruded as you want it? because solidworks makes it perpendicular to the sketch plan, so, to understand, in the direction of the construction lines that I made you above.
cmq the thing seems difficult to me, although I have seen that the differences are tenth or centth of a millimeter. Are you in this range of tolerances? or the problem is the angle that then doesn't make you unform the piece?

 

[Meteor02]

My problem is not the cents of tolerance but it is that by shaping the extruded cut the grooves that you create differ too much according to the distance from the sketch plane. allego 3 examples I would like to obtain the result from surface to surface but with a 2nd shape without incurring the deformation given by the distance of the floor to the cutting point.

 

[Tantocattivo]

The only thing that comes to my mind now is to divide the sketch on multiple planes tangent to the surface and make evidence. You should reduce the error a lot.

cmq another thing, the 2 degrees of deform are compared to a deformed direction, make a straight cut and then apply the deform with a separate function.

 

[Meteor02]

Thank you very much for the consigls, I have tried this too and the answer is impossible to generate deform : (I now try to select fewer faces to be distorted. possible that it is so complicated to make an extruded cut with sform on a curved surface? I've been working with solids recently and I haven't had any particular problems but here I'm really losing and I don't even find a tutorial that helps me.