This is a 3D printed Arm that is robotic.
It follows the success of my previous smaller one EEZYbotARM so I simply called it MK2 (make 2)
It is stronger and a little biggerto obtain an acceptable payload.
It's been designed without a definite purpose, the aim is informative, providing a hardware that allow to focus on exploring all its applications.
It shares the kinematick linkage of the ABB IRB460
I implemented some small features like: internal cable routing in main big arms, a replaceable clamp with quick coupleraxis supported by spheres.
If it is necessary to add a counterweight or a spring to the 20, I'm also evaluating.
Printing & first test video: EEZYbotARM MK2 first test
NON PRINTED PARTS BOM listing :
N°3 995 or 946 servo
n°1 SG90 SERVO
n°1 M6 selflocking nut
n°1 M6x25 screw
n°2 M3 selflocking nuts
n°2 M3 x 20 screws
n°1 M3 x 10 hex recessed head screw
n°9 M4 selflocking nuts
n°1 M4 x 40 screw
n°1 M4 x 30 screw
n°5 M4 x 20 screw
n°1 M4 x 60mm threated rod
n°1 M4 x 32mm threated rod
n°25 Ø6 mm ball spheres
n°1 606zz bearing
some M4 washers
SOFTWARE / FIRMWARE
There are numerous ways to push the arm, as it has been already said on the issue. It depends upon what type of results you want to obtain.
Mainly depends if you want to freely move it or make it repeat a loop.
I found easy using a Pololu Mini Maestro card which does not requires writing any code.
Anyway I made an Instructables: Android APP to control a 3DPrinted Robot where you can find some code
I'll made some upgrades
ONSHAPE claw std interface editable model
Start to make an assembly instruction on my web site eezyrobots.it
Printer Brand: RepRap
Rafts: Does Not Matter
Infill: 30 percent
It is a bit more challenging to print than the MK1 because of some parts and also its dimensions geometry.
It requires a printing area of approximately mm and some pieces has to be printed with supports enabled. Most people are scared by support (also me) but in the end its a tecnique that works and resolve plenty of problems, so why not?
In terms of mk1 all holes are tight since I prefer to adjust the size with an drill bit to recover any sort of possible misalignements