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authorMichael Krelin <hacker@klever.net>2016-07-15 21:50:51 (UTC)
committer Michael Krelin <hacker@klever.net>2016-07-15 21:50:51 (UTC)
commitcd89e0556473d0dde27950f397326b2ed4a4d684 (patch) (side-by-side diff)
tree63cf076216e08af71367a3c24d3567fa1fc88f66
parente05854ae82905063d86a403ae8dfc1d7c01bee77 (diff)
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-rw-r--r--x-carriage.scad5
1 files changed, 3 insertions, 2 deletions
diff --git a/x-carriage.scad b/x-carriage.scad
index d567189..6dc5b67 100644
--- a/x-carriage.scad
+++ b/x-carriage.scad
@@ -36,54 +36,55 @@ module belt(pitch=belt_pitch,width=belt_width,thickness=belt_thickness,tooth=bel
intersection() {
union() {
cube(size=[l,width,thickness+tolerance]);
for(x=[0:pitch:l/2]) for(s=[-1,1])
translate([l/2+s*x,0,thickness])
rotate([-90,0,0])
cylinder(r=tooth+tolerance,h=width,$fn=6);
}
translate([0,-1,0])
cube(size=[l,width+2,thickness+tooth+1]);
}
}
module xcarriage() {
cw = bearings_l+2*bearings_m; // carriage width
% for(mz=[0,1]) mirror([0,0,mz]) translate([0,0,-belts_apart/2]) belt(l=cw+2);
difference() {
translate([-cw/2,-belt_width/2,-(rods_apart+bearings_d+bearings_m)/2])
cube(size=[cw,bearings_d/2+bearings_s+belt_width/2,rods_apart+bearings_d+bearings_m]);
for(sz=[-1,1]) translate([0,0,sz*rods_apart/2]) {
rotate([0,90,0])
cylinder(d=bearings_d,h=bearings_l,center=true,$fn=60);
for(sx=[-1,1]) translate([sx*bearings_l/4,0,0])
+ rotate([0,90,0]) cylinder(d=bearings_d-bearings_m,h=cw+2,center=true,$fn=60);
+ translate([-cw/2-1,-belt_width,-(bearings_d-bearings_m)/2])
+ cube(size=[cw+2,belt_width,bearings_d-bearings_m]);
rotate([0,90,0]) difference() {
cylinder(d=tiehole_od,h=tiehole_w,center=true,$fn=60);
cylinder(d=tiehole_id,h=tiehole_w+2,center=true,$fn=60);
}
- rotate([0,90,0]) cylinder(d=bearings_d-bearings_m,h=cw+2,center=true,$fn=60);
- translate([-cw/2-1,-belt_width,-(bearings_d-bearings_m)/2]) cube(size=[cw+2,belt_width,bearings_d-bearings_m]);
}
difference() {
gap=belts_apart/6;
translate([0,-.5,-gap/2])
cube(size=[cw+2,belt_width+2,belts_apart+2*belt_thickness+gap],center=true);
for(mx=[0,1]) mirror([mx,0,0]) {
ofc = mounting_holes_apart/2+screwhead_d/2+belt_thickness+belt_tooth+play_tolerance; // offset from center
r=1;
x0 = ofc+r; x1=cw/2-r;
z0 = r; z1 = belts_apart/2-belt_thickness;
difference() {
hull() for(x=[x0,x1]) for(z=[z0,z1])
translate([x,0,z])
rotate([90,0,0]) cylinder(r=r,h=belt_width+2,center=true,$fn=30);
translate([cw/2,0,belts_apart/2]) mirror([0,0,1]) belt(width=belt_width+2,l=cw/2+2,tolerance=fit_tolerance);
}
bgap = belt_thickness+belt_tooth+fit_tolerance;
r1 = (belts_apart/3-bgap)/2;
hull() for(x=[mounting_holes_apart/2,x1])
translate([x,0,-r1-bgap])
rotate([90,0,0]) cylinder(r=r1,h=belt_width+2,center=true,$fn=30);
}
} // difference