AutoCad 3D :: Creating Helical Truss / Shape
Oct 10, 2012
Having problems creating a helical truss/ shape. Ive managed to get a simple spline spiral. Which I'm still not 100 percent happy with. But it will suffice for right now.Now one of my problems is extruding, and offsetting. I'm pretty ok at 3d modelling, but when it comes to complex shapes i fall flat on my face. Ive including a dwg that shows a plan view of the structure, as well as my 3d spine. the small circles are the truss cords. Its a 16" flat truss, ran parallel with another to create a spiral ribbon.
The plan view is from the designer, I've noticed but maybe its not true... their helix doesn't seem consistent. I know im leaving a lot of info out.
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Nov 11, 2013
Sometimes I'm unable to place a truss in my building. When I am able to get it in, it's never at the right height (either too high or too low). I've tried moving it in an elevation and section, but it will only move left and right, not up and down. My teacher said something about changing the view range, which I did.
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Feb 17, 2008
I'm trying to create a linetpye .The line needs to be continuous with a solid(not hollow) circles at distances.This would be the same as FENCELINE1:
*FENCELINE1,Fenceline circle ----0-----0----0-----0----0-----0--
A,.25,-.1,[CIRC1,ltypeshp.shx,x=-.1,s=.1 ],-.1,1
but with filled-in circles.for example circles should be hatched or colored.An image of desired linetype is attached.
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Dec 13, 2013
I was given a job where i need to create a surface from a gis file. have been messing with my civ 3d 2013 a little bit and have been able to get a surface comprised of a bunch of polylines to appear (not a true surface). I will need to create profiles so i need a true surface. I downloaded a compressed shape file from the county and need to know how to insert this into a drawing and build a surface using my own surface style.
The files i have to work with:
.dbf
.idx
.prj
.sbn
.sbx
"autocad shape source"
.shp
"autocad complied shape"
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Mar 29, 2013
Using Mathcad, I can create a file with x and y values defining a 2D shape from which I want to create a swept volume.
I want to import these values into Inventor to use as a definition of a sketched line and then use the revolve function to generate the shape.
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Dec 3, 2011
I accidentally found a pyramid shape and imported on top of my solid part shape.
Where can I found it, so I can import it again, but this time as the main solid part.
I am trying to design 3 parts that assemble into the shape of my business logo.
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Sep 25, 2012
Is there a way to unfold a coil shape to get the flat pattern? When I try to unfold the attached part I get an error message (see attached error_msg.jpg). We have been using AutoPOL to unfold these kind of shapes (which works fine). But since we have a very old version which we really need to upgrade, I was wondering if nowadays Inventor could handle coil unfolds.
If this will not work with the current IV2013 release, will this then be implemented in a future release? Are there any alternatives or should I just go for the AutoPOL upgrade?
IV2013 Pro SP1
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Jan 4, 2012
I have a series of boxes or polygones that I would like the program to find the 1/2 distance and create two seperate polylines from the one object.
Example:
I have a square with pt1,pt2, pt3 and pt4 respectively. After I have ran the program it would create a diagonal from pt1 to pt3 and join the rest of the lines now to create the one polyline. Also it would do the same to create another exact polygonal shape for the other half. Thus creating two shapes of equal value from one.
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Feb 2, 2013
I have created a 3D model of a helical gear. The process followed was to use the profile of one tooth, which by the way is a true involute shape, then displace that profile and rotate it the amount needed to equal the face width of the gear and to match the helix angle. There is also a profile located at the midpoint of the gear. The profiles are all closed polylines.
I then used the LOFT command to create a solid tooth. It looks exactly like it should. I tried to use the SWEEP command but that rotates the profile 90 deg. from the path. Extrude won't work because the path is a 3D line in space.
I then invoked the POLAR array and put 28 teeth around the center of the gear. That too looks exactly as I would expect it to.
BUT - when I try to UNION the 28 teeth into one solid, AuotoCAD 2013 stops working. And that occurs the moment the cursor touchs any part of any individual tooth. If I try to UNION the array by dragging a window over it, it stops when the window gets about halfway over the model.
The computer is a Lenovo S-30 workstation with 8 Gig of ram, an nVidia 2000 with 1Gbyte of video memory and dual 1Tbyte hard drives.
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Apr 19, 2012
I have a sheetmetal assembly with helical shaped parts. I need to place about 50 little brackets and some corresponding rollers along the length of these helical pieces. The spacing is even so a pattern would be perfect, except I don't know how to get it to follow the shape of the part. The brackets are located to slots in the helical parts which were made with a rectangular pattern in the unfolded state. I tried to do a "feature pattern select" but it only saw the rectangular pattern as it is in the unfolded state (a straight line). I then gave up on patterns and started working on manually mating them into place but realized that the geometry of the slot was distorted (theory) and didn't leave me with any useable surfaces.
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Dec 19, 2003
I need an ipart for helical gear.
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Jun 19, 2011
I'm trying to create a rather oddly shaped stair stringer. It will have several radii, and direction of curves. The screenshot below isn't exactly what its going to look like - I just drew a quick spline and extruded it into a surface to show what I'm trying to accomplish. I need to "cut" the sufrace to reflect the height of the stringer (will be 16") and to follow its pitch.
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Sep 8, 2011
I want to create a custom linetype that uses a solid rectangle 0.5wide and 1.0 long. Basically I want to create a shape file from an existing block I have so that I can insert it into the linetype definition. Is there an easy way to do this in ACAD 2009?
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Aug 29, 2013
I am trying to recreate and 3D model the impeller of a heartmate II LVAD (URL....) but I am having problems with the sweep along the helical path. The profile is the vertical line and the path is the helix. I want to use a surface output for now. I had to use Solidworks to generate a variable pitch helix and import into Inventor.
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Jun 5, 2012
When showing a gear in an inventor drawing they look good, but showing a helical gear SUCKS! The display, I realize, is very realistic to what you would see if you held the gear in front of you at this view point or that.
Problem is, I put a helical gear drawing on the shop floor and they machinist wonder why I have two rows of teeth on the gear (since it shows the front face and the helix'd gear teeth).
Any way to remove said offending gear teeth?
Inventor 2014 PDS
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Sep 17, 2013
I created a 2D planar sketch, now I need to create a 3D sketch and Helical curves, but as I enter into the 3D sketch mode, I cannot perform any functions, all my tool bar options are grayed out?
I am running 2014 Pro Design Suite.
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Jul 8, 2012
I want to draw helical gear in autocad 2010. How to draw helical gear tooth frofile in autocad.
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Jan 13, 2014
I'm building a product configuration which includes some helical curves. I want to find out how I can change the direction of a Helical curve feature in a 3D sketch.
Variables like pitch and diameter are parameters, but the direction isn't.
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Sep 13, 2013
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..
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Nov 11, 2011
I have started a project and have a somewhat unusual condition. I have a structure with a Conical Roof. We are putting a parapet around this roof. With the parapet, we are also going to create 4 individual structures that direct water/rain flow to scuppers that will be fabricated into the parapet. Below is a sketch of our condition. How to get the shape of a line that follows the face of a cone. Obviously, this line is not projected to the center of the cone, so it is not just a straight line. I am imagining either a radial cut piece, or a complex/multiple radial cut piece. I don't really know how to put it into words exactly.... Take a look at the sketch.
Cone Info.jpg
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Nov 1, 2013
I am trying to create a 3D sketch of a helical curve that has an accelerated pitch.
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Nov 12, 2011
How to draw in Autodesk inventor Helical Gear using Flex option (this option you can find in SolidWorks) below I put link to SolidWorks where this options allow to preper gear by rotation of existing solid. Where do i find this option in Autodesk?
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Jun 30, 2005
to create a curved shape is. So say you have a rectangular shape running down the left side of the page, but the right side of the shape is curved.
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Jul 5, 2004
I open a new project and add a layer, then create a rounded rectangle, is there a way to fill just that rounded rectangle with a gradient. I keep getting a message that the layer is not directly editable or something. I need to just play with the thing, I'm sure - eventually I'd porbably sort it all out. But I got a job creating a web page for a mortgage company and I wanted some custom buttons with a gradient fill -
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Mar 11, 2013
I created this video to achieve this using Xara P&GD. The video is here and the .xar file you need is attached.
This video shows how to create an angle based object for visual presentation, any object created with this method should not be used in manufacturers drawings where precision is paramount.
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Jun 20, 2012
Alright I am trying to create a shape made up of tons of instances of a symbol (best example of what I am trying to achieve is here )
I hoped I could just use draw inside mode and the symbol sprayer however I am not able to ensure the instances don't colide and that they actually completely fit inside the shape without being cut off.
I am obviously going about this the wrong way but have searched for unsuccessfully for any instruction on how this could be achieved.
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Aug 29, 2013
Just doing my normal practise in Illustrator. Ive came across designing a dome sphere shape. And Im using the 3d revolve techniqe, So I have my symbol to map onto the 3d elipse. but towards the top of the sphere the symbol tends to get distorted, and it looks aweful. So I also tried another technique to envolope distort with top object but its hard to achieve making it look 3d, because the sphere faces dont go around.
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Mar 21, 2013
I'm new to illustrator and I'm trying to achieve something I hoped would be quite simple. I want to take a bitmap, live trace it, then create an outline of 2px wide only around the outside limits of the shape. I want to then get rid of all of the live trace vectors and be left with my very simple outline of the original image. Eg.
I've tried image expand, I've tried outline, but nothing seems to work as I need it to.
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Feb 9, 2013
How can I take these groups of white dots and have them go around the entire object while also taking it's shape?
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Nov 26, 2013
I'm trying to draw a helical staircase with a bottom plate underneath the steps. Drawing it isn't a problem. I used a sweep with helical curve. Then I converted this part to a sheet metal. But then inventor doesn't want to unfold it. how I have to make a flat pattern from this one with the necessary bending lines?
Example .ipt and photo in attachment
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Aug 30, 2012
I'm creating navigational elements in photoshop and I want to be able to adjust the outline by itself, as well as there are some elements that are only an outline with no fill. How do I create shape outlines without the fill?
Adobe Photoshop CS4, PC.
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