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Step one: find space to put this machine. Found half extended windowsill. Or full width Area available is (L*W*H) 720*650*1500mm Would be good to use cube area 650mm(^3) -> not indeed / cancelled this size Step two: frame. Found T-groove aluminium frame (square 20mm side): 8pcs * 610mm (top and bottom) + 4 corner elements * 650mm length -> used for K3sto. Made from 2 bars of 4m length aluminium extrusion profile. Remake: L=1300mm W=410mm H=900mm |
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Regular 3D printer Prusa i3 dimentions are near 440mm(^3), and its print volume is 200mm(^3), so I expect up to +200mm each dimention enlargement, with total volume 400mm(^3)... |
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For high precision, decided to use metal shafts only (not belts) on step motor: X (left to right): 1 spiral metal shafts (M8) Y (front to back): 1 spiral metal shafts (M8) Z (down to up): 2 spiral metal shafts (M8) This scheme (wihtout belts) was tested by http://reprap.org/wiki/Lautr3k project. And he did use the same frame material. Speed is not as low as expected, over 100mm/s. Will think on how to make it faster. The best on market (Ultimaker 2) gives 300mm/s. |
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600158.jpg (5,453 bytes) |
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Electrical: in excel file 1. Arduino CNCShield V3 Shield (for RAMPS 1.4) *2 2. Arduino Mega 2560 R3 3. Reprap smart LCD 12864 display controller (for RAMPS 1.4) 4. A4988 DMOS microstepping driver (*8) 5. Mechanical Endstop (*5) 6. SD-card Ramps module 7. heatbed MK2B 8. USB wire 9. LED to board Connector smart adapter 10. LCD 30 cm cable (*2) 11. stepper motor Nema 17 75oz (*5) 12. cable for endstop (*5) 13. MK8 Extruder Head 14. heatbed cable 15. Power supply 350W |
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Motion: Ordered 10pcs stepper motors Model 17HS4401N 1.8 degree 40mm length 3.4 V 1.7 A 2 om 55 oz.in 0.24 kg D5mm end, L24mm 42.3mm*42.3mm*40.3mm body must be compatible with DM420A drivers and even DRV8825 |
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Plastic ABS should give 1,05 g/sm? density |
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Laser modules on market, have 12W maximum power (without CO2) |
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first Machine project (never made) INCUBATOR LM -> frame from 20-20 profile, with fixed table 646*646mm, 8mm rods smooth WC8 steel stainless, on lm8uu bearings, with aluminium parts x-distance between z-shaft and z-leadscrew is 17mm, y-difference=0 (in 1 line) |
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USE Z-axis smooth rods on SF8 support holder - screwed to inner frame cube (610*610*610mm) it gives minus 20mm each side, distance between centers of linear motion Z shafts is (?x) 570mm, standard prusa offset for x-shafts on left-end is 10mm (X_end_idler), on right-end is 10mm (X_end_motor), so, total length of X-rods = 590mm. On motor side we have additional offset (?x) 44mm (total 54mm), which resulted in frame-side x-offset 14mm (not good) over the edge |
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4. For milling purpose, purchased spindle head: 300W (max. power fits standard supply) D=8mm shaft , D=52mm body motor, total length 175mm (with collet, but no mill), ER11 collet, mounting block has total size 90*40*68mm, 4pcs M6*70 screw, aperture centers located on rectangle 70*20mm |
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Set of tools is the same as in ZMorph machine. https://zmorph3d.com/ |
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INCUBATOR 3D2 project (2018) will be "integrated" into window sill stand (rack) and gets size L=650mm exactly (half of total space 1300mm) -> x-axis W=410mm exactly (full slot space) -> y-axis H=900mm approximately (for machine of total 1550mm) -> z-axis mechanics -> keep original idea with fixed table (lower) and moving z-platform (4pc leadscrew and 4pc nema17 motors), carriages will use 6mm GT2 belts: big x-carriage - 2pc belts and 1 motor; small y-carriage - 1pc belt and 1 motor. There are 3 belt levels in this 20mm: upper belt: from 0mm to 6mm middle belt: from 7mm to 13mm lower belt: from 14mm to 20mm leave 1mm exact distance between moving parts as designed bearings too, we assume pulley flanges are 1mm too -> single GT2-6 pulley will be H=1+6+1=8mm and double pulley H=1+6+1+6+1=15mm (unused theory triple 1+6+1+6+1+6+1=22mm) Belt GT2-6 width we assume W=1.4mm. Main dimensions: X/Y motor axis are vertical and located 63.5mm from front/rear frame side -> holder plates are from 42mm to 85mm (W=43mm), leaving 240mm space for carriage in 410mm frame. Head slot between belts is 41mm |
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profile_20x20_.png (159,148 bytes) |
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INCUBATOR 3D2 part list: F (frame) section: F.001: 2020-900 =4 F.002: 2020-610 =4 (in stock) F.003: 2020-370 =4 F.004: 2020-608 =2 F.005: 2020-328 =2 F.006: 2020-326 =2 B (mechanics) section: B.001 608ZZ d8 D22 H7 =18 B.002 F623ZZ d3 D10 Df11.4 H4 =8 |
- Anonymous