AutoCAD 2013 :: Loft Triangle Around Path Of Helix?
Jun 11, 2013
I am trying to loft a triangle around the path of a helix. I want the top point of the triangle to be facing in such that the ouside surface is flat (in the veritcal direction) for the entire helix and I have the two triangle cross sections oriented to do as much. Whenever I try loft it, autocad associates sides of the triangle that aren't supposed to connect causing the triangle to twist along the path. Is there a way that I can easily tell autocad which sides I want to connect?
Trick to keeping objects aligned with a helix when using an associative path array? The animation below demonstrates the problem where I can't seem to keep the "treads" on a spiral stairs aligned with the center of the helix. (fewer objects accentuate the problem)
Haven't used AC in a while and hoping this is a simple question, trying to take a polyline (in this case a coil shape) and add a diameter to the line. This 3D object will then be imported to COMSOL for some thermal expansion modeling.
I am a newbie just start learning how to use AutoCAD in both 2D and 3D.
I have drawn a 3D polyline, and putting two circles with different diameters on both end, trying to loft it and create a horn-shaped like object.
For some reason, AutoCAD keeps complaining the path I selected is not valid, and so I can't do the loft operation. However, I have 'tested' the path with sweep function, and it works.
I am having a difficult time centered the helical path (the equation curve) and lofting the two profiles (centered) through the helical path in the axial rotation direction..
I have 2 rectangles and i want to loft them by path.I want the path to be arc , but i cant draw the arc in isometric view. The objects are positioned something like thes 2 smiles. One is exactly above the other and i want to draw arc to connect them and then use loft but cant make the arc. I tried to draw the arc in Front view, but i then i couldnt use it as loft path.So how to make the arc in 3d?
I have a helix I've made, and I want to turn it into a thread in a hole I've already made.
I'd also like to make a matching bolt to fit the said thread. Keep in mind my thread speficics are not importan this is all merely for a proof of concept.
I do know know if auto cad offer a say to make a bolt and so on w/o too much work -but I've attached the said file and the helix I'm concerned with is in the "threads" layer.
Is there a way to make a work path that has all the lines of the triangle instead of just the outside?
When i use the quick selection or magic wand i can only A) Get the outside shape and inside triangle, or B) Get all but one of the shapes. The triangle is made up of 3 L looking shapes. I want to make a path, put it into Cinema4D , and then be able to color it so i can THEN, put it into an After Effects video.
I'm building a test track to use on a driving simulator.I'm trying to apply banking to the corners. The track's path is a loft with it's path defined as a line, and the loft shape is a rectangle to represent the cross section of the track. I'm trying to apply banking to the corner by using a different shape part way along the loft... however, the result is that the track twists the wrong way so that the top of the track becomes the side and vice versa.
I'm trying to modify a surface I built from drill hole data of a cavern by deleting unwanted triangles from it. Everytime I select the delete lines command it tells me I need to have the triangles displayed for the surface, and they are displayed.
layman what Autodesk is wanting me to change? Trying to use "loft" to skin the surface of 5 polylines. It will do the first, second, third and 5th for a surface, but doesn't like the 4th polyline I created.
I am trying to LOFT multiple ellipse shapes along a spline path to create a door handle. But as soon as I choose 1 section, MAX creates the shape. I cannot figure out how to create the shape with multiple cross sections. I have attached a screen shot and a pic of the door handle I want to create.
I have 4 points/corners (with XYZ-coordinates) of a square shape created in the DWG of my AutoCAD Civil 3D 2013 program. I want to create 2 "triangle-shape" parcels (one parcel connects Points #1-#2-#3-#1 and the other parcel connects Points #1-#4-#3-#1. How can I create these 2 "triangle-shape" Parcels from the 4 points/corners of a squre shape?
I have a bunch of points that I am trying to turn into a solid object. I am doing this by using the 3D poly command and then LOFT, UNION and CONVTOSOLID. this has previously worked well, but this time when I use the LOFT command it does not produce a 'closed' surface, but rather a grid like surface which wont convert to a solid. Are there different settings for the LOFT command, and if so, How do I change them to produce a closed surface?
So when I create a triangle by using the star shape tool and only giving it three points. When I have my triangle, I duplicate it and make it smaller. I center them both up on the canvas, but they don't look centered. As you can see in the picture provided, the bottom has more of a width that the others. I've tried using the alignment tool and the smart guides. I do resize the triangle using shift so it doesn't mess up the shape too.
I just updated my computer with the latest and greatest parts and was excited to open Revit 2013 and try it out. I installed it last night and tried to open it. The splash screen appears for a second and then closes. On the first try, a yellow triangle with an exclamation popped up, it hasn't happened since. I fixed the registry with MS fix it, uninstalled it, and reinstalled it.
I read that it was not compatible with hyperthreading 8 core CPUs. I don't think this is the issue, because I do not have a 8 core CPU. I have a i7 3.5 Quad Core with Hyperthreading, 16 gigs RAM, 1 gig Graphics Card, and a Solid State Drive.
I am working on a project that involves a screw conveyer(auger) with a 3" od, 1.5"/flight and a 0.800" ctr shaft. I modeled it without any difficulty using the "helix" function in a 3-d sketch & then swept a rectal around that path. The problem is, I need paper templates to layout the pattern on the steel. In the past I have made use of the "flat pattern" feature to print paper templates for tube notching and such, but that function prompts me with an error message "no surface to flatten" Attached is the full screw(augShaft9in.ipt), a single flight and 2/3 of a flight(i dont think a full flight will flatten & not overlap). Need to getting these patterns printed.
what ive been trying to do is make a helix that sweeps around a rectangular prism i was able to make it in solid works but i cant find a way to do it in inventor.
When you sweep a profile along a helical path, use the plane normal sweep (instead of perpendicular sweep) to orient profiles suitable for coil or spring. In the example below, the sweep path is a constant radius, variable pitch helix.
I am working on Sweeping three helix profiles around a cylinder to create a screw thread. When I sweep the profile, Inventor gives me the error messages:
"The attempted operation would create a self-intersecting surfaces. Try with different inputs".
or
"The attempted operation did not produce meaningful intersection edges from the face-face intersection. Try with different inputs".
However, this is exactly what I need to create the helix profile I require and eventually increase the size of the Extrusion Sweep profile to 80mm. When I increase the sweep profile to 80mm I get the same error message about the self intersecting surfaces.
I am working with Autodesk Inventor Professional 2011, 64bit, 8gb RAM, Windows 7, Intel Core i7-2860QM.
I am trying to write a standard scrpit file for a data extraction using -EATTEXT. I plan for others to use this script file on different computers, so I will not be able to put in a full file path; it will need to remain relative. Unfortunately, AutoCAD will not recognize a relative file path entered into the command line for -EATTEXT.
