AutoCAD 2013 :: 3D Model Of Helical Gear
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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Dec 19, 2003
I need an ipart for helical gear.
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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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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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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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Dec 8, 2012
I have generated a gear set using inventor. Now I would like to 3d print the gears. I have uesd the export tooth shape to get the true tooth profile. now I am attempting to use the coil feature to generate the helical tooth. The problem im running into is in the coil tool I can only give it a Revolution and height dimension. The hight is the width of the gear, but I am having a problem converting the helix angle to the "Revolution" perameter. I have read other posts and they say that it is Helix angle / 360. I have tried that and then compared it to the original gear generated by inventor and it is not even close. I need to do this on in internal gear and match it to an external gear.
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Nov 9, 2011
I'm desperately trying to model a planetary gear set.I've tried using the gear design accelerator but with little success. Essentially, I would like to have the gears set up with the planet carrier held stationary and the ring and sun gears rotating in opposite directions: URL....The first 5 seconds of this video indicate what I'm after.
I know all of the gear data, but am having trouble generating the gear set.
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Mar 29, 2013
I want to add a twist to my inventor gear model (helical gear). I need a twist approximate 30 degree.
File attached.
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Jan 20, 2012
Inventor 2012
I'm not able to get the right gear rotation in a planetary gear drive that I'm working on.
If I make the ring gear stationary and rotate the sun gear, the planetary gear engages and rotates around the ring gear
but in the opposite direction of what it should be turning. The planet to sun gear engagement rotates backwards regardless of what I do to the rotation constraint that I've applied.
If I make the ring gear free to rotate, and the planet gear stationary, the gear train rotates properly.
I've attached a mock up of the plant gear system to share and show what I'm dealing with.
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Oct 26, 2011
I am not able to convert a 2d gear to 3d gear . I have attached the 2d gear that i had created. I use Autocad student version 2012 . The gear is not getting converted into a complete solid on use of extrusion command . There are gaps in within the gear around the circle or something like that .
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Sep 20, 2012
When I zoom in or zoom out the model, normally the dimension will follow the model too.But now in Autocad 2013, even the model size change, the dimension still remain unchange. why? Is there any setting I miss out? URL....
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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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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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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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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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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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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 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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Sep 6, 2013
how to access the Aec Model(Imperial Ctb).dwt in the template file.
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Jul 2, 2013
I am working with a cylindrical shape (solid) and I have revolved it around an axis, but I need to "cut" two holes through the part.
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Jul 11, 2012
I have an AutoCAD drawing (I did not create it) of a proposed trail in my city, and I've been tasked with making some kind of model or render of a section of it. I'm at a loss for how to even start, unfortunately. In the end I would like to have an accurate 3D model of a boardwalk section of the trail with surrounding terrain. I have Sketchup, Google Earth, and Revit at my disposal.
My first problem is topography. When I import the CAD drawing to Revit it seems there is some topographical data, which will be needed to realistically build the boardwalk on top of. I was able to get the terrain of the area into Sketchup from Google Earth, but then I don't know exactly where to build the model.
I've attached an image of a floor I created in the outline of the boardwalk. The area in question begins at the two handicap parking stalls (represented as the two blue towers for some hilarious reason) and ends at the second square (a viewing platform). My preferred method would be get an accurate topograhic site in Revit, build the boardwalk, and then place surrounding vegetation so I can get some renders.
EDIT: I've attached "Screenshot 2" which shows I found I was able to create terrain in Revit by selecting a layer of the CAD file. However that layer is suspended above, and my placeholder floor is underneath. Now I just need to get the floor (representing the boardwalk) to go along the terrain.
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Mar 15, 2013
I have a 3d model of a bridge and I would like to cut transverse sections at every pier but would like to get linework just at the spot to create plans and would like for it to be linked so if you update pier it will update section? Is this possible or something very close? Let me know what are the best ways to do this.
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Jul 10, 2012
I created a 3d model, and is now trying to put the views on a layout. There seems to be something that causes the view to overlap itself. I have attached a screenshot of the model & layout respectively. On the layout the color members are the ones not supposed to be there. I have printed the layout, and the result is the same as the screenshot.
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Oct 5, 2012
i got for a project some files (in the pic below) wich i actually can use for an 3D model ( geodate's). Problem is, i dont know how i can use/open them to generate an 3D Model. How to figure out which programm I can use this files or how i can use them in AutoCAD?
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Jun 19, 2013
As the layout tabs I'd like to have a multiple model-views tabs.
I can use layouts tabs, I can change the background color to same as model tab and all its ok.
However I'm unable to set scale to have text and annotation with a "human" size (that is, thinking on my screen and not on the paper).
Maybe this is a newbie question but I'm lost....
What is what I must to set ? I dont want to use layout to print, but to view my drawing with custom layer settings.
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Civil 3D (2013) how much you have to improve....
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Nov 20, 2012
create a 3D model using a .dxf file?
.dxf file contains 3D contour lines.
when importing it to Autocad 3D 2013 is shown as a colum instead of a 3D model.
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Nov 15, 2012
The problem is about drawing a solid model like the one in the attachment, and I have problem with the triangle, I tried a lot of things, but unfortunately it's not the same as it should be
My work is in the attachment.
and one more thing, as it's my first time with these kind of drawing I need to know what's the meaning (10 Drill, 20 C'bore) for a circle and how I can do it you can find it in the attachment
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Oct 30, 2013
I am trying to cut sections from an inventor model in AutoCAD. On numerous occasions I am running into an issue where the section cuts are not shown correctly. I have figured out how to correct this issue when cutting sections in inventor, but the issue is accruing in AutoCAD as well. I have attached an image showing an example of what I am talking about, you can clearly see that there are bolts and plates that should be displayed in the section cut which is shown above.
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