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Fixed cable strip parameters and BOM desciption

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This commit is contained in:
Chris Palmer 2019-06-14 16:54:51 +01:00
parent 5ede2d0895
commit b719601a64
3 changed files with 13 additions and 17 deletions
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12
readme.md
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@ -373,20 +373,16 @@ When the sides are constrained then a circular model is more accurate.
### Modules
| Module | Description |
|:--- |:--- |
| ```bezier_cable_strip(ways, depth, length, travel, pos, below, extra)``` | Draw a cable strip using a Bezier curve |
| ```cable_strip(ways, depth, travel, x, extra = 15)``` | Draw a cable stripe with a semi circular fold |
| ```bezier_cable_strip(ways, depth, length, below, extra, pos = 0)``` | Draw a cable strip using a Bezier curve |
| ```cable_strip(ways, depth, travel, extra = 15, pos = 0)``` | Draw a cable stripe with a semi circular fold |
![cable_strips](tests/png/cable_strips.png)
### Vitamins
| Qty | Module call | BOM entry |
| ---:|:--- |:---|
| 1 | ```bezier_cable_strip(20, 50, 150, 100, -100, 100, 10)``` | Polypropylene strip 170mm x 26mm x 0.8mm |
| 1 | ```bezier_cable_strip(20, 50, 150, 100, 0, 100, 10)``` | Polypropylene strip 170mm x 26mm x 0.8mm |
| 1 | ```bezier_cable_strip(20, 50, 150, 100, 100, 100, 10)``` | Polypropylene strip 170mm x 26mm x 0.8mm |
| 1 | ```cable_strip(20, 25, 100, -100, 30)``` | Polypropylene strip 189mm x 24mm x 0.8mm |
| 1 | ```cable_strip(20, 25, 100, 0, 30)``` | Polypropylene strip 189mm x 24mm x 0.8mm |
| 1 | ```cable_strip(20, 25, 100, 100, 30)``` | Polypropylene strip 189mm x 24mm x 0.8mm |
| 3 | ```bezier_cable_strip(20, 50, 150, 100, 10)``` | Polypropylene strip 170mm x 26mm x 0.8mm |
| 3 | ```cable_strip(20, 25, 100, 30)``` | Polypropylene strip 189mm x 24mm x 0.8mm |
<a href="#top">Top</a>

4
tests/cable_strips.scad
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@ -24,11 +24,11 @@ module cable_strips() {
depth = 50;
rotate(-90)
for(pos = [-100, 0, 100]) {
bezier_cable_strip(ways = 20, depth = depth, length = 150, travel = 100, pos = pos, below = 100, extra = 10);
bezier_cable_strip(ways = 20, depth = depth, length = 150, below = 100, extra = 10, pos = pos);
translate([0, depth * 2])
rotate([0, -90, 0])
cable_strip(ways =20, depth = depth / 2, travel = 100, x = pos, extra = 30);
cable_strip(ways =20, depth = depth / 2, travel = 100, extra = 30, pos = pos);
}

14
vitamins/cable_strip.scad
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@ -44,14 +44,14 @@ function cable_strip_control_points(depth, min_z, pos) = let(z = min(min_z, min_
function bezier_cable_length(depth, min_z, pos) = //! Calculate a length that will achieve the desired minimum z
bezier_length(adjust_bezier_z(cable_strip_control_points(depth, min_z, pos), min_z));
module bezier_cable_strip(ways, depth, length, travel, pos, below, extra) { //! Draw a cable strip using a Bezier curve
module bezier_cable_strip(ways, depth, length, below, extra, pos = 0) { //! Draw a cable strip using a Bezier curve
width = ceil(ribbon_clamp_slot(ways) - 1);
thickness = cable_strip_thickness;
total = 2 * extra + length;
vitamin(str("bezier_cable_strip(", ways, ", ", depth, ", ", length, ", ", travel, ", ", pos, ", ", below, ", ", extra,
vitamin(str("bezier_cable_strip(", ways, ", ", depth, ", ", length, ", ", below, ", ", extra,
"): Polypropylene strip ", total, "mm x ", width, "mm x ", thickness, "mm"));
c = cable_strip_control_points(depth, -below + extra, pos);
@ -71,7 +71,7 @@ module bezier_cable_strip(ways, depth, length, travel, pos, below, extra) { //!
function cable_strip_length(depth, travel, extra = 15) = ceil(travel / 2 + 2 * extra + PI * depth); //! Calculate circular cable strip length
module cable_strip(ways, depth, travel, x, extra = 15) { //! Draw a cable stripe with a semi circular fold
module cable_strip(ways, depth, travel, extra = 15, pos = 0) { //! Draw a cable stripe with a semi circular fold
width = ribbon_clamp_slot(ways);
@ -79,15 +79,15 @@ module cable_strip(ways, depth, travel, x, extra = 15) { //! Draw a cable strip
radius = depth / 2;
top = travel / 4 + extra + x / 2;
bottom = travel / 4 + extra - x /2;
top = travel / 4 + extra + pos / 2;
bottom = travel / 4 + extra - pos /2;
length = max(top, bottom);
total = ceil(top + bottom + PI * depth);
w = floor(width - 2);
vitamin(str("cable_strip(", ways, ", ", depth, ", ", travel, ", ", x, arg(extra, 15), "): Polypropylene strip ", total, "mm x ", w, "mm x ", thickness, "mm"));
vitamin(str("cable_strip(", ways, ", ", depth, ", ", travel, arg(extra, 15), "): Polypropylene strip ", total, "mm x ", w, "mm x ", thickness, "mm"));
color(cable_strip_color) linear_extrude(height = w, center = true, convexity = 4)
difference() {
@ -108,7 +108,7 @@ module cable_strip(ways, depth, travel, x, extra = 15) { //! Draw a cable strip
translate([0, -thickness / 2])
square([travel, thickness * 2]);
translate([x, depth - thickness - thickness / 2])
translate([pos, depth - thickness - thickness / 2])
square([travel, thickness * 2]);
}
}