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authorMichael Krelin <hacker@klever.net>2016-07-15 19:05:54 (UTC)
committer Michael Krelin <hacker@klever.net>2016-07-15 19:05:54 (UTC)
commite1439ce24015728989fd76b7e3c6b6d8586b7565 (patch) (side-by-side diff)
treeb0d3b536d4f1bfccc9c536111cf3b064cafab541
parent0e3fe43c37a4924abea2e6dc45efb1d9dfe8347a (diff)
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add a bit more padding on the edges
Diffstat (more/less context) (ignore whitespace changes)
-rw-r--r--x-carriage.scad4
1 files changed, 2 insertions, 2 deletions
diff --git a/x-carriage.scad b/x-carriage.scad
index cffdd1e..1128e64 100644
--- a/x-carriage.scad
+++ b/x-carriage.scad
@@ -28,50 +28,50 @@ tiehole_w = 4;
screw_d = 3;
screwhead_d = 5.5;
screwhead_h = 3;
module belt(pitch=belt_pitch,width=belt_width,thickness=belt_thickness,tooth=belt_tooth,l=100,tolerance=0) {
translate([-l/2,-width/2,-thickness])
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,$fn=6);
}
translate([0,-1,0])
cube(size=[l,width+2,thickness+tooth+1]);
}
}
module xcarriage() {
cw = bearings_l+2*bearings_m; // carriage width
% for(mz=[0,1]) mirror([0,0,mz]) translate([0,0,-belts_apart/2]) belt();
difference() {
- translate([-cw/2,-belt_width/2,-rods_apart/2-bearings_d/2])
- cube(size=[cw,bearings_d/2+bearings_s+belt_width/2,rods_apart+bearings_d]);
+ translate([-cw/2,-belt_width/2,-(rods_apart+bearings_d+bearings_m)/2])
+ cube(size=[cw,bearings_d/2+bearings_s+belt_width/2,rods_apart+bearings_d+bearings_m]);
for(sz=[-1,1]) translate([0,0,sz*rods_apart/2]) {
rotate([0,90,0])
cylinder(d=bearings_d,bearings_l,center=true,$fn=60);
for(sx=[-1,1]) translate([sx*bearings_l/4,0,0])
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])