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authorMichael Krelin <hacker@klever.net>2018-08-12 21:20:15 (UTC)
committer Michael Krelin <hacker@klever.net>2018-08-12 21:20:15 (UTC)
commitf123d3acb5e918b6a21af0a65bba4dc0395c73f3 (patch) (side-by-side diff)
treeac940d2b2c28ce486eee0b34872345d92e789901
parent6c61457ea7bfaf0edc28f9e771bf608e2a9bc405 (diff)
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finetune filament offset relative to the pulley
Diffstat (more/less context) (show whitespace changes)
-rw-r--r--another.scad13
1 files changed, 7 insertions, 6 deletions
diff --git a/another.scad b/another.scad
index b80d0d0..a93d21a 100644
--- a/another.scad
+++ b/another.scad
@@ -18,6 +18,7 @@ module the_extruder(
pulley_d = 11.5, pulley_h=10,
pulley_elevation = 1, // pulley elevation above the protrusion
teeth_elevation = 7.5, // distance from the bottom of the pulley to its teeth
+ filament_offset = (8.25-(3.0+3.5)/2) - 11.5/2 + 1.75/2,
// idler properties
idler_d = 9.5, idler_h = 4, idler_id = 3, // idler dimensions: outer and inner diameters and height
// spring properties
@@ -121,7 +122,7 @@ module the_extruder(
cylinder(d=idler_screw_d,h=lever_thickness+2,center=true,$fn=30);
}//place idler
// filament path
- rotate([0,0,45]) translate([pulley_d/2,0,0]) {
+ rotate([0,0,45]) translate([pulley_d/2+filament_offset,0,0]) {
rotate([90,0,0]) cylinder(d=filament_d,h=gearbox_d*2,center=true,$fn=15);
rotate([-90,0,0])
translate([0,0,mount_d/sqrt(2)/2+mount_screw_d])
@@ -152,12 +153,12 @@ module the_extruder(
// filament path
place_idler() {
- translate([-idler_d/2,0,0]) rotate([90,0,0]) {
+ translate([-idler_d/2+filament_offset,0,0]) rotate([90,0,0]) {
cylinder(d=filament_path_d,h=3*gearbox_d,center=true,$fn=30);
translate([0,-filament_path_d/2/sqrt(2),0]) rotate([0,0,45])
cube(size=[filament_path_d/2,filament_path_d/2,3*gearbox_d],center=true);
}//rotate translate
- translate([-idler_d/2,0,0])
+ translate([-idler_d/2+filament_offset,0,0])
rotate([90,0,0])
translate([0,0,
sqrt(2)*(mount_d-pulley_d+lsd)/2
@@ -246,7 +247,7 @@ module the_extruder(
// pushfit bracket
translate([0,0,filament_elevation])
- rotate([0,0,45]) translate([pulley_d/2,0,0])
+ 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:
@@ -292,7 +293,7 @@ module the_extruder(
}//for
// pushfit
translate([0,0,filament_elevation])
- rotate([0,0,45]) translate([pulley_d/2,0,0])
+ 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+epsilon])
rotate([0,0,180]) {
@@ -328,7 +329,7 @@ module the_extruder(
(mount_d/sqrt(2)/2+mount_screw_d+pf_h(pf)+gearbox_d/2)
/
(
- pulley_d/2-
+ pulley_d/2+filament_offset-
(pf_d(pf)+2*pf_shell)/2/cos(30)
)
);