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added configuration for screwhole expansion, deepened screwholes for idler posts

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TQ Hirsch
2022-03-06 18:05:36 +01:00
parent 9f8fdb55ec
commit 97b0bb7fba
3 changed files with 35 additions and 32 deletions
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2
TODO.md
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@@ -1,9 +1,7 @@
## Mechanical
* Add screw holes for feet in each corner
* Add place to mount electronics (likely just an extra part)
* add slot for motor electronic connection
* Add screw holes for idler mounts in rear corner
* Raise motor mount on front left motor
## Electronics

6
constants.scad
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@@ -14,5 +14,7 @@ cur_ypos = 140;
echo(str("Range = ", [ xsize - xmin * 2, ysize - ymin * 2 ]));
$fn = 30;
$include_substock = true;
//$fn = 30;
screw_hole_expansion = 1.1;
screw_num_sides = 7;

59
parts.scad
View File

@@ -65,12 +65,12 @@ module corner_base(extension = wall_thickness) {
translate([pos + actual_corner_offset, 0, -odim])
union() {
cylinder(d = 8, h=2, center=true);
cylinder(d = 5, h = odim);
cylinder(d = 5 * screw_hole_expansion, h = odim);
}
}
// Adjustable feet
cylinder(d=8, h=odim * 2 + 1);
cylinder(d=8, h=odim * 2 + 1, $fn = screw_num_sides);
}
}
@@ -172,29 +172,24 @@ module nema17_housing() {
screw_dxy = 31 / 2;
translate([ 0, -nema17_face / 2 - frame_size / 2 - wall_thickness, 0 ])
slotify([0, -motor_mount_length_adjustment, 0]) {
translate([ 0, 0, -2 ])
translate([ 0, -nema17_face / 2 - frame_size / 2 - wall_thickness, 0 ]) {
slotify([0, - motor_mount_length_adjustment, 0]) {
translate([ 0, 0, -2 ])
cube([ nema17_face + 1, nema17_face + 1, hdepth ], center = true);
cylinder(d = 23, frame_size);
cylinder(d = 23, frame_size);
}
for (x = [-1, 1], y = [-1,1]) {
slotify([0, - motor_mount_length_adjustment, 0])
translate([
x * screw_dxy,
y * screw_dxy,
frame_size / 2 + wall_thickness + 0.5
])
rotate([ 180, 0, 0 ]) {
cylinder(d = 5 * screw_hole_expansion, h = wall_thickness + 1);
}
}
translate([ -screw_dxy, -screw_dxy, frame_size / 2 + wall_thickness ])
rotate([ 180, 0, 0 ]) {
cylinder(d = 5, h = 3);
}
translate([ screw_dxy, -screw_dxy, frame_size / 2 + wall_thickness ])
rotate([ 180, 0, 0 ]) {
cylinder(d = 5, h = 3);
}
translate([ -screw_dxy, screw_dxy, frame_size / 2 + wall_thickness ])
rotate([ 180, 0, 0 ]) {
cylinder(d = 5, h = 3);
}
translate([ screw_dxy, screw_dxy, frame_size / 2 + wall_thickness ])
rotate([ 180, 0, 0 ]) {
cylinder(d = 5, h = 3);
}
}
}
@@ -227,7 +222,7 @@ module idler_post(belt_height, toothed = true) {
cube([ post_radius * 2, post_radius * 2, slot_height ]);
}
cylinder(d = 3, h = total_height + 1, $fn = 30);
cylinder(d = 3, h = total_height + 1);
translate([ 0, 0, total_height - 2 ]) cylinder(r = 3, h = 3);
}
if($preview) {
@@ -304,10 +299,18 @@ module frcorner() {
module blcorner() {
bom_item();
union()
rotate([ 0, 0, 270 ]) {
corner_base(extension = rail_holder_width);
rail_holder(true);
difference() {
rotate([0, 0, 270]) {
corner_base(extension = rail_holder_width);
rail_holder(true);
}
for (pos = [
[motor_shaft_xoffset + pulley_sbend_offset, 0, 0],
[0, motor_shaft_xoffset + pulley_sbend_offset, 0],
]) {
translate(pos)
cylinder(d = 3, h = belt_height2, $fn=screw_num_sides);
}
}
translate([motor_shaft_xoffset + pulley_sbend_offset, 0, 0])
rotate([0,0,-90])