85 lines
No EOL
2.3 KiB
OpenSCAD
85 lines
No EOL
2.3 KiB
OpenSCAD
include <BOSL2/std.scad>
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$fn = 36*5;
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t = 5;
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rounding = 1;
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// base to connect to the printer
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base_hole_distance = 40;
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base_frame_hole_d = 4.5;
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base_dim = [61,23,12];
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// I had a M3x30 screw, with a head diameter of ~5.5mm
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base_det_screw_l = 30;
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base_det_screw_d = 3.5;
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base_det_screw_head = 6;
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det_offset = 4; // offset to the left, because the Elegoo filament detector is not centered
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difference() {
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// base
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cuboid(base_dim, rounding=rounding, anchor=TOP);
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// holes for screws
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left(base_hole_distance/2) cyl(d=base_frame_hole_d, h=base_dim[2], chamfer=-1, anchor=TOP);
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right(base_hole_distance/2) cyl(d=base_frame_hole_d, h=base_dim[2], chamfer=-1, anchor=TOP);
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down(base_dim[2]/2) left(det_offset) union() {
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// hole for screw for filament detector
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ycyl(d=base_det_screw_d, h=base_dim[1]);
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// hole for the screw head
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back(base_det_screw_l - 10) ycyl(d=base_det_screw_head, h=base_dim[1]);
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}
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}
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// ball bearing holder
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bear_up = 25;
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bear_fwd = 15;
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// 608 bearing
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bear_od = 22;
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bear_cover_od = 32;
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bear_id = 8;
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bear_w = 7;
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difference() {
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// base for bearing
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chain_hull() {
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up(bear_up) fwd(bear_fwd) xcyl(d=bear_od, h=bear_w+1+2*t, rounding=rounding);
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cuboid([bear_w+1 + 2*t, base_dim[1],2]);
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}
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// cutout for bearing
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up(bear_up) fwd(bear_fwd) xcyl(d=bear_cover_od + t, h=bear_w+1);
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// hole for screw to hold bearing
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up(bear_up) fwd(bear_fwd) xcyl(d=bear_id, h=bear_w+1 + 2*t+0.1);
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}
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// bearing cover
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up(bear_up) fwd(bear_fwd) difference() {
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union() {
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xcyl(h=bear_w, d1=bear_od, d2=bear_cover_od);
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xcyl(h=bear_w, d2=bear_od, d1=bear_cover_od);
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}
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xcyl(d=bear_od, h=bear_w);
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}
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// PTFE tube holder
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ptfe_dim = [bear_w+1 + 2*t,9,37];
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filament_od = 2.5;
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ptfe_od = 4.4;
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difference() {
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union() {
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// upright square
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back(base_dim[1]/2) down(rounding) cuboid(ptfe_dim, anchor=BACK+BOTTOM);
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// upright round top
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up(ptfe_dim[2]-rounding) back(base_dim[1]/2)
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ycyl(h=ptfe_dim[1], d=ptfe_dim[0], anchor=BACK);
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}
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// hole for filament
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up(ptfe_dim[2]-rounding) back(base_dim[1]/2) ycyl(h=ptfe_dim[1], d=filament_od, anchor=BACK);
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// hole for PTFE tube
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up(ptfe_dim[2]-rounding) back(base_dim[1]/2) ycyl(h=ptfe_dim[1]/2, d=ptfe_od, rounding1=1, rounding2=-0.5, anchor=BACK);
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} |