XY Stepper Motor Supports (3DPrinter Part 6)

boucaron (57)in #technology • 7 years ago

This time it is about the Stepper Motor Supports for both X and Y Axis.

The support is very simple and the same for both X & Y axis:

It is aligned with both belt gears from the gantry.
It just needs 2 M5 bolts to mount it on the chassis and the classic 4 M3 bolts to fix on the stepper motor.
As the support is designed you can put any length for the Nema 17 motor: I tried a 40mm with a lot of margin, it can receive even 60mm or longer without any issue. I will put a Nema 17 48mm length with 2.5A.

I just had to redesign once to reduce the height from the chassis beam to the stepper motor to a few millimeters in order to have enough clearance in the belt path (a longer closed belt can help too) for one specific axis.

Screenshot from 2017-09-24 16-24-31.png

This is an external design such that an enclosure can be built onto and having motronics and electronic parts outside of it, it simplifies maintenance with a nice accessibility.

Parts are made of PETG with the following slicing parameters using my ChopChop3D Slicer:

240C HotEnd
65C Bed
0.2mm Layer Height
2 Insets @ 0.4mm
5 Top/Bottom Layers with 120% LineInfill & 20% Overlap
30% ZigZag Infill & 20% Overlap
Wipe, Dynamic Retraction/DeRetraction and few funky features at the toolpath

Forthcoming Part

Probably the Z Axis/Bed assembly will be covered, I started the design using 600mm length 8mm rods, but I had to buy 2*800mm by an happy accident and 800mm are quiet happy inside the chassis. I will reuse both 600mm in the future to implement copy/ditto printing at the XY Gantry, and buy 2 800mm for the Z axis.