NordicCNC's build log

[NordicCnc]

Short update on the Z-axis design! You might notice that the design is heavily influenced by JAZZCNC's build's (e.g. the cover and L-shape gantry), although still very different and definitely no where near his quality!

Modifications:

1. Based on feedback I have now removed the stiffening ribs from the front plate. The reason is that since the front plate is directly mounted to the X-axis bearings with literally no overhang, the stiffening ribs would add nothing but weight. Instead a 3mm aluminium sheet is bent and welded, forming a cover that is structural while also protecting the components and cables from chips.
2. Removed the linear rail spacer plates and added machining to both the rear and front plate, to make room for the BK12/BF12 bearings and the 1605 ball screw.
3. 180W servo motors are no longer a constraint. Now I am thinking about getting Delta 400W servo motors. On the Z-axis I plan to use one with brake: https://www.aliexpress.com/item/3267...23d152a8ZJcwMZ. On the X- and Y-axis I plan to use ones without brakes: https://www.aliexpress.com/item/32671356516.html?spm. All axis with still be geared 2:1, to limit the ball screw maximum speed to 1500rpm.
4. Modified the top bearing plate to account for BK15/BK15 bearings and 2010 ball screw on the X-axis (in design process).
5. Preliminary positioning of proximity switches. The X-axis will only need one, but for the Z-axis I might need 2 if I can't find a location which I can use for both homing/top limit switch as well as bottom limit switch.
6. New Z-axis weights are 45kg (total) and 25kg (moving).

Here is the Z-axis mounted on the draft X-axis design, made with 120x80 Item profiles (I will post a more detailed X-axis design description later):