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feat(flexmount): single mounting bridge

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kellervater
2025-04-26 20:46:40 +02:00
parent 51aa349be5
commit ae9b343b40
1 changed files with 84 additions and 34 deletions
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118
models/flexmount/flexmount.scad
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@@ -9,9 +9,10 @@ fit_to_rack=true;
/* [Device Measurements] */
// Width of the device in mm. Will determine how far apart the actual mounts are in width.
device_width=100; // TODO test for zero cube
device_width=100
; // TODO test for zero cube
// Depth of the device in mm. Will determine how far apart the actual mounts are in depth.
device_depth=99.0;
device_depth=99;
// Height of the device in mm. Will determine how far apart the actual mounts are in height.
device_height=25.5;
@@ -27,40 +28,54 @@ TOLERANCE=0.2; // mm
BASE_STRENGTH=2; // mm
// Chamfer size. This is a sane default.
CHAMFER=1; // mm
// Lock Pin side length
LOCK_PIN_SIDE=4; // mm
// lock pin edge distance
LOCK_PIN_EDGE_DISTANCE=5.5; // mm
// diff_width resembles the gap between the device and the mount. This gap will be filled with a cuboid
width_diff=( device_width + TOLERANCE ) % BASE_UNIT / 2;
echo("Diff Width: ", width_diff);
mount_anchor_left=device_width/2 + width_diff;
echo("mount_anchor_left: ", mount_anchor_left);
modulo_width=(BASE_UNIT - ( device_width + TOLERANCE ) % BASE_UNIT);
WIDTH_DIFF = modulo_width==15 ? 0 : modulo_width;
echo("Diff Width: ", WIDTH_DIFF);
mount_gap_filler_start=(device_width+TOLERANCE)/2;
echo("mount_gap_filler_start: ", mount_gap_filler_start);
echo("mount_gap_filler_width: ", mount_anchor_left-mount_gap_filler_start);
echo("effective mount distance: ", device_width+width_diff*2);
echo("effective mount distance: ", device_width+WIDTH_DIFF+TOLERANCE);
// diff_depth resembles the
/* Code */
// creates a bracket around the device with TOLERANCE as additional space and BASE_STRENGTH as the strength of the bracket
module bracket(width,depth,height) {
// Bracket
difference() {
outer_width=width+BASE_STRENGTH*2;
outer_depth=depth+BASE_STRENGTH*2;
outer_height=height+BASE_STRENGTH;
intersection(){
difference() {
// Outer
cuboid(
size=[width+BASE_STRENGTH,depth+BASE_STRENGTH,height+BASE_STRENGTH],
size=[outer_width,outer_depth,outer_height],
anchor=BOTTOM,
chamfer=CHAMFER, edges=[TOP,FRONT,BACK,LEFT,RIGHT], except=[BOTTOM]
);
// Top Skeleton
cuboid(
size=[width-BASE_STRENGTH*2,depth-BASE_STRENGTH*2,height+BASE_STRENGTH],
size=[width-BASE_STRENGTH*2,depth-BASE_STRENGTH*2,outer_height],
anchor=BOTTOM,
chamfer=-CHAMFER, edges=[TOP]
);
// Bottom Recess
cuboid(
size=[width+BASE_STRENGTH,depth+BASE_STRENGTH,height-BASE_STRENGTH],
size=[outer_width,outer_depth,height-BASE_STRENGTH],
anchor=BOTTOM
);
);
}
translate([0,0,outer_height])
cuboid(
size=[outer_width,outer_depth,BASE_STRENGTH*2],
anchor=TOP,
chamfer=CHAMFER, edges=[BOTTOM]
);
}
}
@@ -74,13 +89,14 @@ module device(width,depth,height) {
);
}
module mount_rail(width,depth) {
module mount_rail(width,depth,chamfer=CHAMFER) {
difference(){
height=BASE_UNIT+TOLERANCE/2;
// outer
cuboid(
size=[width,depth,height],
anchor=TOP+LEFT
anchor=TOP+LEFT,
chamfer=chamfer, edges=[FRONT,BACK], except=[TOP,LEFT]
);
// support recess
cuboid(
@@ -94,32 +110,66 @@ module mount_rail(width,depth) {
// Mount
module mount(){
depth=BASE_UNIT+BASE_STRENGTH*2+TOLERANCE;
gap_filler_width=WIDTH_DIFF/2;
union(){
translate([mount_gap_filler_start,0,0])
// Gap Filler
union(){
cuboid(
size=[width_diff,depth,device_height+BASE_STRENGTH],
anchor=BOTTOM+LEFT
);
mount_rail(width_diff,depth);
}
translate([mount_gap_filler_start+width_diff,0,0])
// Mount
// Mirror the mount to create a symmetric mount
union(){
top_width=BASE_STRENGTH;
bottom_width=BASE_UNIT+top_width+gap_filler_width;
// Bridge
difference(){
cuboid_width = bottom_width-BASE_STRENGTH*2;
cuboid_chamfer = device_height < cuboid_width ? device_height : cuboid_width;
prismoid(
size1 = [bottom_width, depth], // Bottom face: width 30, depth 60
size2 = [top_width, depth], // Top face: becomes a line segment (width 0)
shift = [(-bottom_width+top_width)/2, 0], // Shift top edge center to X=+15 (aligns with right edge of base)
chamfer=CHAMFER,
h = device_height, // Height
//chamfer=CHAMFER/2,
anchor = BOTTOM+LEFT // Anchor bottom left
);
translate([BASE_STRENGTH,0,BASE_STRENGTH])
cuboid(
size=[cuboid_width,BASE_UNIT,device_height],
anchor=BOTTOM+LEFT,
chamfer=cuboid_chamfer, edges=[LEFT], except=[TOP,RIGHT,FRONT,BACK]
);
}
// Depth enforcement
depth_enforcement_x = BASE_STRENGTH-TOLERANCE/2;
prismoid(
size1 = [BASE_UNIT, depth], // Bottom face: width 30, depth 60
size2 = [0, depth], // Top face: becomes a line segment (width 0)
shift = [-BASE_UNIT/2, 0], // Shift top edge center to X=+15 (aligns with right edge of base)
h = device_height+BASE_STRENGTH, // Height
anchor = BOTTOM+LEFT // Anchor bottom left
size1 = [depth_enforcement_x, depth],
size2 = [depth_enforcement_x, depth+BASE_UNIT],
h = device_height,
chamfer=[CHAMFER,0,0,CHAMFER],
anchor = BOTTOM+LEFT
);
// Mount Rail
mount_rail(BASE_UNIT,depth);
}
// Mount Rail with holes
difference(){
mount_rail(bottom_width,depth);
// holes
translate([bottom_width-LOCK_PIN_EDGE_DISTANCE,0,-LOCK_PIN_EDGE_DISTANCE])
cuboid(
size=[LOCK_PIN_SIDE,depth,LOCK_PIN_SIDE],
anchor=TOP+RIGHT
);
}
}
}
}