BLV 6mm Gates XY and 3xSFU1204 kinematic leveling Z motion system for BLV MGN Cube

thingiverse

CAUTION! I designed the components with precise tolerances in mind, ideal for Fused Deposition Modeling (FDM) printing processes. EDIT-24.12.2020 ALL PARTS WERE PRINTED AND ASSEMBLED SUCCESSFULLY Some minor clearance adjustments were made to facilitate easier assembly; if you've already assembled everything, this shouldn't be a concern. The keyhole in the left motor bracket was only present on the bottom part and had to be drilled out in the top part. This issue has since been resolved. EDIT-19.08.2020 Motor positions for X and Y were adjusted slightly towards the center, ensuring that the steppers won't come into contact with the frame (a move prompted by Michael's noise issues in the community). This modification allows for larger stepper motors, up to 43x43mm, without any interference. The Z-Motor/BK10 mount was split into two separate parts for enhanced flexibility. This design change accommodates different ballscrew end dimensions and facilitates better realignment of bearing blocks, ballscrews, and z motors. Printing these components in SLS or MJF materials will also result in cost savings. EDIT-20.06.2020 Three misaligned holes in the right motor block top part were corrected. Thanks to @Guru54321 for pointing out this issue. Uniform naming conventions were established for all parts. (A significant update) A kinematic leveling triple Z motion system, utilizing SFU1204 ballscrews and standard BK/BF10 bearing blocks, has been incorporated into the design. EDIT-20.05.2020 Tolerances for part connections, bearings, and nuts were updated (mostly 0.15mm), as well as screw positions on the rear corners. This is my interpretation of the BLV MGN cube motion system. For Z, I opted for a triple Z setup using SFU1204 ballscrews and standard BK/BF10 bearing blocks. A kinematic leveling system employing magnets has been implemented (for reference, check the step file; magnetic balls will be sourced from www.supermagnete.de, similar to Haydns Magballs). The heatbed is a custom-milled 385x385mm plate paired with a 350x350 keenovo heater in a sandwich design, as recommended by keenovo. This configuration allows for efficient heat dissipation. I wouldn't have wanted to use 9mm belts due to their high resistance to stretching and the desire to overbuild the machine; however, especially points 4 and 5 are difficult to achieve with 9mm belts, and I haven't seen any evidence of improved print quality. Some essential hardware requirements include: - 10x ISO 7379-5-M4-30 - 2x ISO 7379-5-M4-16 (https://www.ganternorm.com/de/produkte/3.2-Befestigen-Positionieren-Nivellieren-mit-Schraub-Klemm-und-Auflageelementen/Augenschrauben-Passschrauben-Druckschrauben/ISO-7379-Passschrauben) - Shim washers (https://www.filastruder.com/products/shims-for-shoulder-screws?_pos=2&_sid=c453a62c8&_ss=r&variant=17989593104455)