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Questions tagged [cad]

Computer-Aided Design is the use of computers in the engineering design process. It involves drafting, modelling, simulation, optimisation, and creation of technical documentation. The term CAD is often used to denote software for computer-aided design.

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What is an engineering term for this type of arm

I'm trying to describe a part - it's an arm that holds an axle sleeve (which ultimately holds a wheel). I'm stuck right now describing it simply as a "wheel arm", but was wondering if there was some ...
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How to add radial protrusions to a disc in Autodesk Inventor

First post here, trying to get a little help with Autodesk Inventor. I am trying to make a part that is basically a wheel with little nubs on the end (think of a lego with tabs on the outer ...
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CAD - Using code to edit a CAD file

I have a CAD file in SketchUp that I would like to edit using code (ie: its dimensions, properties, etc.) What is the best way to do this? If I export the file as an STL, is there a program where I ...
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Fusion360 - How do I fill these sketch planes into a body?

How do I make this highlighted part of drawing a solid body so that I can than boolean / subtract it later? All of these faces / planes are connected.
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How do you implement a pattern over a bent plate in Autodesk Inventor?

I am attaching the model part as an Image below for your reference:- I need the pattern like this on the above model. I have the model shown above, and want to put embossed lines 0.2 mm thick with 0....
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1answer
45 views

What is a mechanism with teeth like this called? [duplicate]

I'm trying to describe a part that I'm designing that has a disc with incremental teeth, like what is pictured here; which mates with a similar part. What is this type mechanism called? And what are ...
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1answer
47 views

Tool Clearance at Bottom of Milled Thread

Hi, So I have a large piece that I want to thread (the entire region in blue), but I am not sure how much space to leave at the bottom for retraction of the blade (region in red), see above image. ...
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27 views

How to calculate properties of a thread?

I have a simple thread joint between two objects: and want to find a size of those threads so that after rotating male part it stands at the specific angle. For those who is curious I made it in ...
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1answer
29 views

How buildings 3D model is created [closed]

Suppose I have a rough 3d model of a building created it some CAD software. Now I want to change some portion of the model based on the following factors Lighting Energy consumption Structural Load ...
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1answer
42 views

How to make datum planes on a cone in Creo?

I am trying to make this I was able to make the base feature but I am facing problems with the secondary features. So could anyone shed some light on how to make the datum planes on cones. I made ...
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2answers
87 views

Creating a “half dome” in solidworks

I have a half cylinder shape, and another half cylinder sketch perpendicular to that first cylinder. I wish to create a "half-dome" between these two surfaces (picture what should look like almost a ...
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1answer
43 views

Crafting a mirrored shifting drum for motorcycle gearbox

I would like to reverse the gearing of my Husaberg FS 650e motorcycle so that by pressing the shifting pedal the gearbox changes up instead of down to the first gear. There are many solutions on the ...
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Converting Creo files to STP on linux

I need to send out some PRT files for tooling that have been made using Creo. I do not have a windows PC or mac available at the moment, only linux. Does anyone have some advice how to go from here?
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CAD Modeling of the following function

please see the attached image. Does anyone know how to CAD the following equation with associated input parameters in SolidWorks or Creo? Any help would be appreciated as I cannot seem to be able to ...
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2answers
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Why are there multiple ways to save polygonized 3D model data?

In CAD, there are multiple file formats only for the scope of saving polygonized models in three dimensions. For example, there is the Object File Format and furthermore, there is the much more ...
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1answer
42 views

Curved Slider Mechanism With Two Different Radii

I'm trying to make a slider mechanism that is guided around a curved rail that consists of two different radii. As you can see in the image, the section of the rail with a diameter of 120 mm requires ...
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How to put the green diamond back in it's original position in AutoCAD 2018

How would I go about resetting the position of the green diamond which acts as an anchor point for these text objects? The idea is to be able to move the text box around with the green diamond in it'...
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2answers
50 views

How to indicate standard screw thread in drawing

I have no experience with actual CAD drawings and CNC machines so please forgive me if this is a really stupid question... Anyway I have a part which I have 3D printed and it contains some internal ...
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Please Help me Read this Engineering Drawing

I am trying to CAD up a drawing for a plate for this motor to mount to. I figured it would be easy since they provided an mechanical drawing, but I have never seen one like this before. Can you please ...
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Can I get a graph of the span-wise lift distribution on a wing using SolidWorks flow simulation?

I'm working on a project that is a small cargo rc aircraft.. so i wanted to design the wing spar so that it can withstand the lift force created by the wing.. I know how to use solidworks simulation ...
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1answer
58 views

How would I get my hands on something I designed in Solid works?

Lets pretend I designed a plastic Lunchbox, like the ones pictured below in solid-works. What processes or options are involved in obtaining a physical sample of my design?
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3answers
87 views

Making complicated curves / surfaces in the real world accurately

There are many complex mathematical shapes like the cycloid, cissoid, umbilic torus (picture) or the shape of the Azadi tower. Sure one can design complex objects like this in CAD software today but ...
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2answers
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How to model the inside of a server for CFD and thermal studies?

At my workplace I have been assigned to create an accurate 3D model of our Dell PowerEdge R820 servers so we can insert our custom cards and run a CFD and thermal analysis on them. The end goal is to ...
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280 views

How to design a worm gear in FreeCAD?

i want to print worm gears for my robot arm. My Problem is to design it in FreeCAD. Normally i use for gears involute gear. This is not to use for worm gears. I cant find "addons" for it. Is there a ...
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1answer
173 views

How to use more CPU cores in SpaceClaim?

This is a more technical rather than professional question. I have a hyper-threaded quad core CPU. While building models in SpaceClaim I noticed that it only uses one logical core. A single core will ...
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1answer
83 views

Simple and easy Open Source CAD tools for basic 2D and 3D designs [closed]

We are planning to start a basic course on Computer Aided Designs (2D and 2D) for high school kids. The idea is to help them shape their innovative ideas into something tangible. We shall finally ...
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How are IFC file material relationships maintained across platforms

IFC files have an IFCMATERIAL property which names a material and is referenced by other components in the model. The IFC file doesn't point to a materials library, doesn't indicate a system variable ...
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What is Design Element in the context of asset management

In the context of physical asset management (BIM etc) what is a Design Element? I have come across the term several time but never in an official document - can anyone explain the term and provide a ...
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1answer
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What is the name of the vertical lines in groundwork plans

When producing groundwork designs especially in Bentley software, I noticed people like to produce them with contours and vertical lines or even tadpole-shaped lines instead of simply doing ...
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Difference between GIS and CAD accuracy

They say CAD is more accurate and used by engineers to design very locally compared to GIS that is more suitable for analysis. But at the same time CAD (apart from AutoCAD Map which is GIS) is always ...
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1answer
73 views

What is the most accurate geometry to represent earth

Currently software and maps represent earth in many different ways, the latest is Point Clouds as this is the most common surveying tools currently available. For the needs of visualisation, ...
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How to calculate the Jacobi of electron/hole continuity equations for semiconductors with respect to potential when applying Newton's method?

These are the discretized drift diffusion equations as taken from the book "Analysis and Simulation of Semiconductor Devices" by Siegfried Selberherr. The electron continuity equation is: $$\begin{...
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3answers
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Autocad - multipage drawing with all content in the same model space

I have inherited a set of templates for creating drawings for solar panel projects. Each set is about 12 pages and only 2-4 pages are different between projects. Several pages are actually just ...
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How can I *more accurately* measure the weight of a hanging bottle?

I have a project where I need to be able to measure the volume of remaining liquid in a bottle based on weight. The idea is to use a Force Sensing Resistor: (model FSR402-Short Tail: http://www....
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236 views

How do markers, blocks, and parts work in MSC Adams? [closed]

What are the properties, purposes and relationships between: Markers, Blocks and Parts in MSC Adams? I don't understand how to use them properly.
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Inventor parts that move in sub-assembly won't move in main assembly

So suppose I have 4 files. Part 1 Part 2 Sub-assembly Assembly Now in sub-assembly, part1 and part 2 are "connected" to each other and there is an articulation. Everything works well until I place ...
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1answer
170 views

Considerations for planet carrier design

I need to design a planet carrier for a planetary gearbox to which I'm gonna be doing some simple vibration experiments. It basically consists of the ring, sun and 3 planets and the ring it's no more ...
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1answer
33 views

General purpose automated assembly?

I've been using 3d printers for prototyping for a long time, and I'll admit it's incredibly convenient to be able to throw together a CAD model, send it to the printer, and have it ready to assemble ...
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How to convert *.3OXZ CAD files to *.STL?

We are using one dental scanner (Vitality Scanner) and the output format is in 3doxz Format,So we need to change it to stl for some analyzing on it, So i need to find out any software for this CAD ...
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1answer
591 views

How to create a clear bill of materials list?

I am required to create a Bill of Material for a steering system I am designing. However, I am not entirely sure how to structure it. For example, what type of order are the parts listed as I have ...
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1answer
323 views

Is there an equivalent to the 'equal' constraint from solidworks in fusion 360?

I used to use Solidworks a few years back and am now trying to learn Autodesk Fusion 360. So far I'm pretty impressed but one thing I've not found is something like the ...
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221 views

How to design CAD bevel gears from known outside diameter?

I'm working on a problem where I need to design and 3D print bevel gears to fit in the inside of a box and transmit a gear train around the inside corner, as roughly illustrated by the cross section ...
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2answers
157 views

Propane rocket nozzle material

As far as I know, propane with oxygen will burn at 2800 °C and steel will melt at ~1500 °C. Brass is even less. What I am trying to do is a rocket nozzle. Is there a way I can built this with steel ...
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3answers
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Is it Possible to Automatically Transform an Image of an Object into a Line Drawing in AutoCAD?

I have many photos of devices which must be traced into AutoCAD. Is there any software for tracing object edges/outlines automatically so that a Primary Plan of the object can be made in AutoCAD? For ...
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1answer
215 views

What is a void in CAD

I'm using existing architectural designs and some mechanical designs too, all CAD files in formats *.dwg, *.dgn and the drawings have smart solid geometries including voids. Using CAD software what is ...
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3answers
5k views

Is “pitch diameter” the same as the distance between the centers?

I am designing gears in FreeCad, and printing then on a FlashForge Finder. I want to know if the pitch diameter is the same as the distance between the centers of the two gears. Both gears are ...
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2answers
71 views

Folded/bent sheet steel design

I'm coming from the software engineering world (please don't rip me to shreds here), and I'm somewhat unfamiliar with the manufacturing process when it comes to cut and bend steel. To provide broader ...
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1answer
80 views

Method to extract closed curve from 3D CAD into CSV or TXT

I have engineering data emerging from more or less complex constructions. On a regular base I need outlines from construction data to perform geometric calculations on them. The construction data ...
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1answer
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How can I save mass, inertia, joint location and part orientation data from any 3D-CAD program to a CAD file?

I would like to be able to save, for example, a SOLIDWORKS(or any 3D-CAD program) assembly in some format that includes all the joint local/global locations and the parts global location and ...
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1answer
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How do I “subtract” sketches in CAD?

I am using 123D Design to build a model for 3D printing. What I want to build is a large 2D rectangle with several smaller rectangles inside. Then, I want to extrude the larger rectangle, but leave ...