|Archive: Servo «3D Print» BFB Touch|
Assembling the Body
I tested the hopper assembly here. This entire setup can then be dropped into one side, then covered by the other side. Tightening all bolts will put the case quite straight, even i some of the parts are slightly bent by humidity.
Don't Forget The Hidden Nuts!
There is a speciality about the hopper sides: the upper set of square nut holes are located on the fingers instead of th slots. The idea is, that the bolts will not interfere with the piston, creating a solid hopper surface inside. So, before dropping the walls into the side, slide the square nuts into the finger holes.
Putting It Together
Z Motors Mount
All Walls In
Building the Hoppers
The hopper walls are held using the wall mount bars. Fit the bars and hold them with more M4 16mm bolts. After tightening the bolts on one side, turn the assembly over and mount the other side plate. Tighten the bolts on that one, too.
Electronics Side (Back Cover)
It's time to mount the back and front sides and give our machine some shape. The back cover is the one with the opening for the electronics. It should fit onto the one end of the assembly. Mount it and lock it with more bolts (At this point, I am running out of bolts. I should have bought the hundred back, not the 50 one).
Aaaah. this is how the machine looks assembled. If you still have some time on your hands, you can measure the length of the 8mm Y rods now and cut both to size. They are mounted using the rod holders (which are not neither in my parts pile, nor in my photo, so they are probably not in the CAD file either. Bummer). So instead, let's enjoy another look...
Next, we have to add the bearings, the belt tighteners, and the Y axle with gears and motor.
(c) 2012-15 Matthias Melcher