In this assignment, I have designed a robotic arm and then 3D print some of theparts that culd not be made subtractively. Moreover I tried a iSense 3D scanner.
Fig 1.0.1 : What is addictive manufacture? Resource: 3d hubs
Additive Manufacturing is know by many names: 3D Printing, Rapid Prototyping, Rapid Tooling, Rapid Technologies, Rapid Manufacturing, Advanced Manufacturing, additive Fabrication, Additive Layer Manufacturing, Direct Digital Manufacturing and Direct Manufacturing. Today additive manufacturing focuses on features such as geometric freedom and speed is not he sole determining factor.
Unlike most conventional manufacturing techniques, Additive manufacturing forms oject bz building matter up, rather than removing it.
Additive manufacturing technologies are use to manufacture: Prototypes, tools and production parts.
Machine suppliers: Most common technology for desktop 3d printing.
This is a very common way to save your 3D CAD model and there are some charteristics and what can be wrong with this alogorithm.
LMI, VERML, CS, RPI and STL,etc
STL - orifinally STeroLithograpy, today Surface Tessellation Language also known as Standard Triangulation Language
After tessellation following erros can occur:
Supports are used when models have sttep ovehangs or unsupported area
A general rule of thumb is that most printes can support ovehang angles less than 45 degrees
First of all I sketeched my idea what I am going to 3D model and some of the feutures of the robotic arm.
I am planning to use a 3d print and laser cut a plywood to fabricate the robotic arm.
3D CAD of the robotic arm that I am going to build.
To model this is simple you have to design so that it can hold the servo motor and assembly this to another part.The feuture I used to model this head part is boss extrude, mirror, filet and cut extrude.
As you could see this object cannot be produced because the inside of the part should be cut and a CNC milling machine head tool might be to large to cut this.
After I have modeled the 3D CAD using solidworks, I made a new 2d drawing and put all the parts that I want to laser cut.
Cura is the software to generate the g-code of a 3d printer and set the properties.
It is time to print two parts of the robotic arm, the head and he shoulder join and I was printing with Ulimaker 2+. Printing PLA is quite easy because it melts in a low
Print setup: Custom
Start to print and it takes arround 3 hours to print.
Remove the support from the material
Assembly the 3d parts to the plywoods with m3 screws.
Finally we have a robotic arm!
The assigment is to 3D scan an object.
The 3D scanner that I use in our FabLab is called iSense which is attached to an Ipad.
This is my first experience using a 3d scanner and the result is not that bad.
We will have to rotate 360 degree and move up and down to scan the object.
The result for shaded View.
The result for x-Ray.
The result for colour view.
This is the overall view of my first experience of using a 3d scanner.
The harware I used to 3D Scan was actually my Iphone x with ScandyPro software in IOS.
Then I tried to 3D print it and the following picture was the result
Robotic Arm 3D CAD
3d Scanner file