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authorMichael Krelin <hacker@klever.net>2018-08-21 18:00:15 (UTC)
committer Michael Krelin <hacker@klever.net>2018-08-21 18:00:15 (UTC)
commiteb49701c13f76640936e7a2a7a138bd92617b147 (patch) (side-by-side diff)
treee8e4629a861c5e9bfc15a5c6d09e471aa2bc1b38
parentfc213f6b29f62795ce33d0e0acdea1e6a6b0fffb (diff)
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adjustments to screw mount depth
Diffstat (more/less context) (show whitespace changes)
-rw-r--r--another.scad15
1 files changed, 11 insertions, 4 deletions
diff --git a/another.scad b/another.scad
index 6afa9ef..6ef7299 100644
--- a/another.scad
+++ b/another.scad
@@ -8,12 +8,13 @@ include <pushfit_data.scad>;
module the_extruder(
// motor properties
gearbox_d = 36,
mount_d = 28, // the distance between opposite mounting holes
mounthole_depth = 5,
+ mounthole_min_depth = 3, mounthole_max_depth = 4,
protrusion_d = 22, protrusion_h = 2.2, // the dimensions of the protrusion on top of gearbox
bore_d = 8, bore_l = 17.6,
bore_dd = 7,
// pulley properties
pulley_d = 11.5, pulley_h=10,
pulley_elevation = 1, // pulley elevation above the protrusion
@@ -59,12 +60,14 @@ module the_extruder(
idler_v_tolerance=.5,
knob_bore_d_tolerance=.6,
st_nut_h_tolerance=.2,
st_nut_d_tolerance=.2,/* TODO: make it st_nut_w_tolerance */
st_screw_d_tolerance=.5,
+ min_z_shell = 4*layer_height, // the very minimal shell thickness along z-axis.
+
what="lever", // lever|body|knob|springpad|*
left=false,
vitamins = true,
supports = false, bridges = true,
tensioner = true,
debug = false
@@ -77,16 +80,20 @@ module the_extruder(
lsd = idler_d-idler_clearance*2;
longwing=gearbox_d/2+spring_d/2+lsd/2;
h_ = (pulley_d+idler_d)/(2*sqrt(2));
ri = sqrt( pow(h_,2) + pow(mount_d/2-h_,2) );
spring_dl = idler_travel*longwing/ri;
+ mount_min_depth = mounthole_min_depth ? mounthole_min_depth : mounthole_depth-1;
+ mount_max_depth = mounthole_max_depth ? mounthole_max_depth : mounthole_depth+1;
filament_elevation=protrusion_h+pulley_elevation+teeth_elevation;
ls_z = filament_elevation; // leverspace mid-z
- body_h = max(protrusion_h+bore_l,mount_screw_l-mounthole_depth/2+mount_screwhead_h,ls_z*2);
ls_h = lever_thickness+lever_v_clearance; // leverspace height
+ mount_depth = mount_screw_l - (ls_z+ls_h/2+min_z_shell);
+ body_h = max(protrusion_h+bore_l,mount_screw_l-mount_depth+mount_screwhead_h+min_z_shell,ls_z*2);
+ echo("mount depth",mount_depth);
module mirrorleft() {
mirror([left?0:1,0,0]) children();
}
module place_idler() {
rotate([0,0,45])
@@ -285,18 +292,18 @@ module the_extruder(
// protrusion
translate([0,0,-1])
cylinder(d=protrusion_d+protrusion_tolerance_h,h=protrusion_h+protrusion_tolerance_v+1,$fn=fnd*(protrusion_d+protrusion_tolerance_h));
// mount screw holes
for(zr=[0:90:359]) rotate([0,0,zr]) translate([mount_d/2,0,0]) {
- translate([0,0,mount_screw_l-mounthole_depth/2-(bridges?layer_height:-epsilon)])
+ translate([0,0,mount_screw_l-mount_depth-(bridges?layer_height:-epsilon)])
mirror([0,0,1])
cylinder(d=mount_screw_d+mount_screw_d_tolerance,
- h=mount_screw_l-mounthole_depth/2+1,
+ h=mount_screw_l-mount_depth+1,
$fn=fnd*(mount_screw_d+mount_screw_d_tolerance));
- translate([0,0,mount_screw_l-mounthole_depth/2])
+ translate([0,0,mount_screw_l-mount_depth])
cylinder(d=mount_screwhead_d,h=body_h+1,$fn=fnd*mount_screwhead_d);
}//for
// pushfit
translate([0,0,filament_elevation])
rotate([0,0,45]) translate([pulley_d/2+filament_offset,0,0])
rotate([-90,0,0])