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authorMichael Krelin <hacker@klever.net>2017-02-06 21:20:07 (UTC)
committer Michael Krelin <hacker@klever.net>2017-02-06 21:20:07 (UTC)
commit461e05f32eacaffd4508abf2943fcad8d0c7d00d (patch) (side-by-side diff)
treeb4d25537b953efb9e2e44815520f36f0c6df4773
parentc83b5d18ae09805a6a65715a2586c225ff393074 (diff)
downloadextrudery-461e05f32eacaffd4508abf2943fcad8d0c7d00d.zip
extrudery-461e05f32eacaffd4508abf2943fcad8d0c7d00d.tar.gz
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knob
Diffstat (more/less context) (show whitespace changes)
-rw-r--r--Makefile4
-rw-r--r--another.scad38
2 files changed, 40 insertions, 2 deletions
diff --git a/Makefile b/Makefile
index 9444a03..31135cb 100644
--- a/Makefile
+++ b/Makefile
@@ -11,12 +11,14 @@ clean:
rm -f *.stl *.gcode
stl-another-%:
- $(MAKE) another-$*-{body,lever}.stl
+ $(MAKE) another-$*-{body,lever,knob}.stl
another-%-body.stl: another-%.scad another.scad
$(OPENSCAD_BIN) $(OPENSCAD_FLAGS) -D 'what="body"' -o "$@" "$<"
another-%-lever.stl: another-%.scad another.scad
$(OPENSCAD_BIN) $(OPENSCAD_FLAGS) -D 'what="lever"' -o "$@" "$<"
+another-%-knob.stl: another-%.scad another.scad
+ $(OPENSCAD_BIN) $(OPENSCAD_FLAGS) -D 'what="knob"' -o "$@" "$<"
%.stl: %.scad
${OPENSCAD_BIN} ${OPENSCAD_FLAGS} -o "$@" "$<"
diff --git a/another.scad b/another.scad
index fa60676..9f42f46 100644
--- a/another.scad
+++ b/another.scad
@@ -32,6 +32,11 @@ module the_extruder(
filament_d = 1.75,
filament_path_d = 2,
filament_guide_d = 4, // PTFE filament guide diameter
+ // knob properties
+ knob_h = 10,
+ knob_bore_l = 4,
+ knob_indent_d = 4,
+ knob_indents = 12,
// screw it
mount_screw_d = 3, mount_screw_l = 20,
@@ -47,6 +52,7 @@ module the_extruder(
protrusion_tolerance_v=.5, // vertical tolerance for the motor protrusion
mount_screw_d_tolerance=.5,
idler_v_tolerance=.5,
+ knob_bore_d_tolerance=.6,
what="lever",
left=false,
@@ -293,12 +299,42 @@ module the_extruder(
}//body module
+ module knob() {
+ ch = knob_indent_d/2;
+ translate([0,0,body_h+epsilon]) {
+ mirror([0,0,1]) translate([0,0,-epsilon]) {
+ difference() {
+ cylinder(d=pulley_d,h=knob_bore_l,$fn=pulley_d*PI*2);
+ translate([0,0,-1]) difference() {
+ cylinder(d=bore_d+knob_bore_d_tolerance,h=knob_bore_l+2);
+ translate([-bore_d/2-1,bore_dd-bore_d/2+knob_bore_d_tolerance/2,-1])
+ cube([bore_d+2,bore_d/2,knob_bore_l+4]);
+ }
+ }
+ }
+ difference() {
+ union() {
+ cylinder(d1=gearbox_d-2*ch,d2=gearbox_d,h=ch+epsilon,$fn=PI*gearbox_d*2);
+ translate([0,0,ch])
+ cylinder(d=gearbox_d,h=knob_h-2*ch+epsilon,$fn=PI*gearbox_d*2);
+ translate([0,0,knob_h-ch])
+ cylinder(d1=gearbox_d,d2=gearbox_d-2*ch,h=ch,$fn=PI*gearbox_d*2);
+ }
+ for(a=[0:360/knob_indents:359]) rotate([0,0,a])
+ translate([0,gearbox_d/2,-1])
+ cylinder(d=knob_indent_d,h=knob_h+2,$fn=knob_indent_d*PI*2);
+ }
+ }
+ }//knob module
+
mirrorleft()
if(what=="lever") color("green",0.7) lever();
else if(what=="body") color("yellow",0.7) body();
- else if(what=="both") {
+ else if(what=="knob") color("red",0.7) knob();
+ else if(what=="both" || what=="*") {
color("green",0.7) lever();
color("yellow",0.7) body();
+ color("red",0.7) knob();
}
}