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authorMichael Krelin <hacker@klever.net>2018-08-31 18:50:17 (UTC)
committer Michael Krelin <hacker@klever.net>2018-08-31 18:50:17 (UTC)
commit75fca0ac3c2b4e9a5d5bb49043abc9bc9e8b599c (patch) (side-by-side diff)
treedb5076e2f711c44871b6089dbadf1f04de6aa818
parentdcbe14bb70c4c83bf8dd50e590c5539be022a7ac (diff)
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spring tensioner split width as a parameter
and conditional label (though probably without the change using empty string would achieve more or less the same results)
Diffstat (more/less context) (show whitespace changes)
-rw-r--r--another.scad21
1 files changed, 12 insertions, 9 deletions
diff --git a/another.scad b/another.scad
index 297c1fc..ed18874 100644
--- a/another.scad
+++ b/another.scad
@@ -28,24 +28,25 @@ module the_extruder(
filament_d = 1.75,
filament_path_d = 2,
filament_guide_d = 4, // PTFE filament guide diameter
// knob properties
knob_h = 10,
knob_bore_l = 4,
knob_indent_d = 4,
knob_indents = 12,
// spring tensioner
st_nut_d = 9, st_nut_h = 4,
st_screw_d = 5,
st_thickshell = 8*extrusion_width, st_thinshell = 2*extrusion_width,
+ st_split_w = 4*extrusion_width,
// screw it
mount_screw_d = 3.1, mount_screw_l = 20,
mount_screwhead_d=6, mount_screwhead_h=3,
idler_screw_d = 3,
idler_screwhead_d=6, idler_screwhead_h=3,
pf = pushfit_embeddest,
pf_shell = max(3*layer_height,3*extrusion_width),
pf_smooth = true,
// empty spaces
@@ -228,25 +229,25 @@ module the_extruder(
module body() {
difference() {
union() {
cylinder(d=gearbox_d,h=body_h,$fn=fnd*gearbox_d);
// spring tensioner part
translate([-gearbox_d/2,0,0]) hull() {
translate([0,-longwing,ls_z])
rotate([0,90,0])
cylinder(d=lever_thickness,h=fsw,$fn=fnd*lever_thickness);
hh=body_h-ls_z;
translate([0,0,ls_z])
- mirror([0,1,0]) cube(size=[fsw,longwing+(st_thinshell+st_split_w_tolerance)/2+st_thickshell,body_h-ls_z]);
+ mirror([0,1,0]) cube(size=[fsw,longwing+(st_split_w+st_split_w_tolerance)/2+st_thickshell,body_h-ls_z]);
hhh=ls_z;
translate([0,0,0])
mirror([0,1,0]) cube(size=[fsw,longwing-hhh+lever_thickness/sqrt(2),hhh+lever_thickness/2]);
}//hull translate
// pushfit bracket
translate([0,0,filament_elevation])
rotate([0,0,45]) translate([pulley_d/2+filament_offset,0,0])
rotate([-90,0,0])
translate([0,0,mount_d/sqrt(2)/2+mount_screw_d-gearbox_d/2/*TODO:*/]) {
pfbl = pf_h(pf)+gearbox_d/2; //TODO:
if(pf_smooth) {
@@ -352,65 +353,67 @@ module the_extruder(
translate([-gearbox_d/2,-longwing,ls_z]) rotate([0,-90,0]) {
mirror([0,0,1]) {
translate([0,0,st_thickshell])
hull() for(o=[0,spring_d]) translate([0,-o,0])
rotate([0,0,30])
cylinder(d=st_nut_d+st_nut_d_tolerance,h=st_nut_h+st_nut_h_tolerance,$fn=6);
translate([0,0,-1]) cylinder(d=st_screw_d+st_screw_d_tolerance,h=fsw+2,$fn=fnd*(st_screw_d+st_screw_d_tolerance));
bigd = spring_d+spring_d_clearance;
hf = (bigd-st_screw_d-st_screw_d_tolerance)/2;
translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell-epsilon]) {
cylinder(d1=st_screw_d+st_screw_d_tolerance,d2=bigd,
h=hf+epsilon, $fn=fnd*bigd);
- translate([0,-(st_thinshell+st_split_w_tolerance)/2,0])
- cube(size=[body_h-ls_z+1,st_thinshell+st_split_w_tolerance,fsw+1]);
+ translate([0,-(st_split_w+st_split_w_tolerance)/2,0])
+ cube(size=[body_h-ls_z+1,st_split_w+st_split_w_tolerance,fsw+1]);
}//translate
translate([0,0,st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+hf-epsilon])
cylinder(d=bigd,h=fsw+1,$fn=fnd*bigd);
}//mirror
}//translate
// label
label_thickness = 2*layer_height;
label_len = len(label);
- labelspace = [gearbox_d/2-mount_screwhead_d/2-min_xy_shell,longwing-(mount_screwhead_d-st_thinshell-st_split_w_tolerance)/2-2*min_xy_shell-mount_d/2];
+ if(label_len) {
+ labelspace = [gearbox_d/2-mount_screwhead_d/2-min_xy_shell,longwing-(mount_screwhead_d-st_split_w-st_split_w_tolerance)/2-2*min_xy_shell];
translate([0,0,body_h-label_thickness])
linear_extrude(height=label_thickness+epsilon,convexity=64)
- translate([-mount_screwhead_d/2-min_xy_shell-labelspace.x/2,-longwing+(st_thinshell+st_split_w_tolerance)/2+min_xy_shell+labelspace.y/2])
+ translate([-mount_screwhead_d/2-min_xy_shell-labelspace.x/2,-longwing+(st_split_w+st_split_w_tolerance)/2+min_xy_shell+labelspace.y/2])
mirror([left?0:1,0])
text(text=label,size=labelspace.x/label_len,halign="center",valign="center",font="Arial Black");
+ }//if(label_len)
}//difference
}//body module
module springpad() {
smalld=st_screw_d+st_screw_d_tolerance+min_xy_shell;
bigd = spring_d+spring_d_clearance/2;
hf = (bigd-smalld)/2;
h = hf*3.5;
translate([-gearbox_d/2+st_thickshell+st_nut_h+st_nut_h_tolerance+st_thinshell+1,-longwing,filament_elevation])
rotate([0,90,0]) difference() {
union() {
cylinder(d1=smalld,d2=bigd,h=hf,$fn=fnd*bigd);
translate([0,0,hf-epsilon])
cylinder(d=bigd,h=h-hf,$fn=fnd*bigd);
translate([0,0,h])
sphere(d=spring_d*3/4,$fn=fnd*spring_d*3/4);
l = body_h-ls_z;
- w = st_thinshell;
- hull() translate([0,-st_thinshell/2,0]) mirror([1,0,0]) {
+ w = st_split_w;
+ hull() translate([0,-st_split_w/2,0]) mirror([1,0,0]) {
translate([0,0,w])
- cube(size=[l,st_thinshell,w]);
- cube(size=[l-w,st_thinshell,2*w]);
+ cube(size=[l,st_split_w,w]);
+ cube(size=[l-w,st_split_w,2*w]);
}
}
translate([0,0,-epsilon])
cylinder(d=st_screw_d+st_screw_d_tolerance,h=2*hf+epsilon,$fn=fnd*(st_screw_d+st_screw_d_tolerance));
}
}
module knob() {
ch = knob_indent_d/2;
translate([0,0,body_h+epsilon]) {
mirror([0,0,1]) translate([0,0,-epsilon]) {
difference() {