add openscad prototype for scanner body. draw m12 lense holder

6 files changed, 142 insertions, 0 deletions

diff --git a/body/.body.scad.swp b/body/.body.scad.swp
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index 0000000..9104a06
--- /dev/null
+++ b/body/.body.scad.swp
diff --git a/body/body.scad b/body/body.scad
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+++ b/body/body.scad
@@ -0,0 +1,7 @@
+include <design.scad>
+include <helpers.scad>
+include <m12_lense_holder.scad>
+include <m12_lense_holder_adapter.scad>
+
+m12_lense_holder();
+//m12_lense_holder_wo_holes();
\ No newline at end of file
diff --git a/body/design.scad b/body/design.scad
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+++ b/body/design.scad
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+// sample file.
+// should be generated by optical_design app:
+// https://git.kostovsky.me/optical_design/
+$actualZBaseText = "145.96 (118.96)";
+$opticalAxisAngleDegrees = 28;
+$lenseYPosMm = 114;
+$focalDistanceMm = 10;
+$backFocalDistanceMm = 7.3;
+$lenseAperture = 56;
+$lenseBodyMaxDiameterMm = 14;
+$lenseBodyLengthMm = 17;
+$sensorWidthMm = 4.98;
+$sensorHeightMm = 3.74;
+$sensorCellWidthUm = 6.9;
+$sensorCellHeightUm = 6.9;
+$sensorVerticalOffsetMm = 0;
+$sensorPixelsHeight = 720;
+$sensorPixelsWidth = 544;
+$zBaseMm = 150;
+$zRangeMm = 200;
+$laserBodyDiameterMm = 14;
+$laserBodyLengthMm = 45;
+$laserAngleDegrees = 45;
+$laserZOffsetMm = 0;
+$scannerBodyWallThicknessMm = 3;
+$scannerBodyFrontWallOffsetMm = -24;
+$sensorLenseAngleDegrees = 4.61821827339071;
+$vFoVDegrees = 20.269505650602042;
+$actualZBaseMm = 145.95810178293496;
+$actualZRangeMm = 210.77877476859703;
+$lenseSensorDistanceMm = 10.429504909559073;
+$frontSharpDistanceMm = 241.46849169805705;
+$backSharpDistanceMm = 244.1992816062187;
+$depthOfFieldMm = 2.730789908161654;
diff --git a/body/helpers.scad b/body/helpers.scad
new file mode 100644
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--- /dev/null
+++ b/body/helpers.scad
@@ -0,0 +1,9 @@
+use <design.scad>
+
+function hole_z(h) =
+    assert(h > 0, "hole_z: h should be greater than 0")
+    -h * 0.001;
+
+function hole_h(h) =
+    assert(h > 0, "hole_h: h should be greater than 0")
+    h * 1.002;
\ No newline at end of file
diff --git a/body/m12_lense_holder.scad b/body/m12_lense_holder.scad
new file mode 100644
index 0000000..63df125
--- /dev/null
+++ b/body/m12_lense_holder.scad
@@ -0,0 +1,91 @@
+// calculate cylinder/circle "Fragments Number" based on diameter
+function diameterToFn(d) = (d * PI * 3);
+
+// m12 cam holder size
+$m12_lense_holder_size = 13;
+// bottom part height
+$m12_lense_holder_bottom_h = 3.5;
+// top part height
+$m12_lense_holder_top_h = 3.5;
+// distance between holes centers
+$m12_lense_holder_d_btw_holes = 18;
+// screw holes outer diameter
+$m12_lense_holder_sh_outer_d = 4;
+// screw holes inner diameter
+$m12_lense_holder_sh_inner_d = 1.5;
+// left hole offset
+$m12_lense_holder_l_hole_offset = [-$m12_lense_holder_d_btw_holes / 2, 0, 0];
+// right hole offset
+$m12_lense_holder_r_hole_offset = [$m12_lense_holder_d_btw_holes / 2, 0, 0];
+// lense hole diameter
+$m12_lense_holder_lense_hole_diameter = 12;
+
+// m12 lense holder without holes
+module m12_lense_holder_wo_holes()
+{
+    $S = $m12_lense_holder_size;
+    $cube_size = [$S, $S, $m12_lense_holder_bottom_h];
+
+    // bottom cube
+    translate([0, 0, $cube_size[2] / 2])
+    cube($cube_size, center = true);
+    
+    // top cylinder
+    translate([0, 0, $cube_size[2]])
+    cylinder($fn=diameterToFn($S), h = $m12_lense_holder_top_h, d = $S);
+    
+    // screw holes, outer body to cut from
+    hull()
+    {
+        translate($m12_lense_holder_l_hole_offset)
+        cylinder(
+            $fn = diameterToFn($m12_lense_holder_sh_outer_d),
+            h = $m12_lense_holder_bottom_h,
+            d = $m12_lense_holder_sh_outer_d);
+
+        translate($m12_lense_holder_r_hole_offset)
+        cylinder(
+            $fn = diameterToFn($m12_lense_holder_sh_outer_d),
+            h = $m12_lense_holder_bottom_h,
+            d = $m12_lense_holder_sh_outer_d);
+    }
+}
+
+module m12_lense_holder_holes()
+{
+    // left screw hole
+    translate($m12_lense_holder_l_hole_offset)
+    cylinder(
+        $fn = diameterToFn($m12_lense_holder_sh_inner_d),
+        h = $m12_lense_holder_bottom_h * 3,
+        d = $m12_lense_holder_sh_inner_d,
+        center = true);
+
+    // right screw hole
+    translate($m12_lense_holder_r_hole_offset)
+    cylinder(
+        $fn = diameterToFn($m12_lense_holder_sh_inner_d),
+        h = $m12_lense_holder_bottom_h * 3,
+        d = $m12_lense_holder_sh_inner_d,
+        center = true);
+
+    // lense hole
+    cylinder(
+        $fn = diameterToFn($m12_lense_holder_lense_hole_diameter),
+        d = $m12_lense_holder_lense_hole_diameter,
+        h = ($m12_lense_holder_bottom_h + $m12_lense_holder_top_h) * 3,
+        center = true);
+}
+   
+module m12_lense_holder()
+{
+    difference()
+    {
+        
+        m12_lense_holder_wo_holes();
+        m12_lense_holder_holes();
+    }
+}
+
+//m12_lense_holder();
+//m12_lense_holder_wo_holes();
\ No newline at end of file
diff --git a/body/m12_lense_holder_adapter.scad b/body/m12_lense_holder_adapter.scad
new file mode 100644
index 0000000..3b099f6
--- /dev/null
+++ b/body/m12_lense_holder_adapter.scad
@@ -0,0 +1 @@
+include <m12_lense_holder.scad>