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Merge branch 'martinbudden-printed_pulleys'
This commit is contained in:
Chris Palmer
commit
4cca9d5285
196
printed/printed_pulleys.scad
Normal file
196
printed/printed_pulleys.scad
Normal file
@ -0,0 +1,196 @@
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//
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// NopSCADlib Copyright Chris Palmer 2020
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// nop.head@gmail.com
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// hydraraptor.blogspot.com
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//
|
||||
// This file is part of NopSCADlib.
|
||||
//
|
||||
// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the
|
||||
// GNU General Public License as published by the Free Software Foundation, either version 3 of
|
||||
// the License, or (at your option) any later version.
|
||||
//
|
||||
// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
|
||||
// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
||||
// See the GNU General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU General Public License along with NopSCADlib.
|
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// If not, see <https://www.gnu.org/licenses/>.
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//
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//! Printed pulleys are a remix of droftarts's (see <https://www.thingiverse.com/droftarts/designs>) Parametric Pulleys
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//! on Thingiverse (see <https://www.thingiverse.com/thing:16627>) and are licensed under the
|
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//! Creative Commons - Attribution - Share Alike license (see <https://creativecommons.org/licenses/by-sa/3.0/>)
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//
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include <NopSCADlib/core.scad>
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include <NopSCADlib/vitamins/pulleys.scad>
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printed_pulley_GT2_profile = [[0.747183,-0.5],[0.747183,0],[0.647876,0.037218],[0.598311,0.130528],[0.578556,0.238423],[0.547158,0.343077],[0.504649,0.443762],[0.451556,0.53975],[0.358229,0.636924],[0.2484,0.707276],[0.127259,0.750044],[0,0.76447],[-0.127259,0.750044],[-0.2484,0.707276],[-0.358229,0.636924],[-0.451556,0.53975],[-0.504797,0.443762],[-0.547291,0.343077],[-0.578605,0.238423],[-0.598311,0.130528],[-0.648009,0.037218],[-0.747183,0],[-0.747183,-0.5]];
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function printed_pulley_inverted(type) = pulley_hub_dia(type) < pulley_flange_dia(type); //! Need to print upside down to prevent overhang
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function printed_pulley_od(tooth_count, tooth_pitch, pitch_line_offset)
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= tooth_count * tooth_pitch / PI - 2 * pitch_line_offset;
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module printed_pulley_teeth_from_profile(tooth_count, tooth_depth, tooth_width, tooth_profile) {
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pulley_od = printed_pulley_od(tooth_count, 2, 0.254);
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difference() {
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rotate (90 / tooth_count)
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circle(r = pulley_od / 2, $fn = tooth_count * 4);
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tooth_distance_from_centre = sqrt(pulley_od * pulley_od - (tooth_width + 0.2) * (tooth_width + 0.2)) / 2;
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for(i = [1 : tooth_count])
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rotate(i * 360 / tooth_count)
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translate([0, -tooth_distance_from_centre])
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scale([(tooth_width + 0.2) / tooth_width, 1])
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polygon(tooth_profile);
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}
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}
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module printed_pulley_GT2_teeth(type) {
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tooth_count = pulley_teeth(type);
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if (tooth_count == 0)
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circle(r = pulley_od(type) / 2);
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else
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printed_pulley_teeth_from_profile(tooth_count, 0.764, 1.494, printed_pulley_GT2_profile);
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}
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module printed_pulley_teeth(type) { //! Draw the pulley's teeth
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tooth_count = pulley_teeth(type);
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tw = pulley_od(type) * PI / (tooth_count * 2);
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ir = pulley_ir(type);
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or = pulley_od(type) / 2;
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T_angle = 40;
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GT_r = 0.555;
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for (i = [0 : 1 : tooth_count - 1])
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rotate(i * 360 / tooth_count)
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if (pulley_type(type)[0] == "G")
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translate([0, ir + GT_r])
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hull() {
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circle(GT_r);
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translate([0, GT_r])
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square(2 * GT_r, center = true);
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}
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else
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translate([0, (ir + or) / 2])
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hull() {
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for(side = [-1, 1])
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translate([side * tw / 2, 0])
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rotate(-side * T_angle / 2)
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square([eps, (or - ir)], center = true);
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translate([0, 1])
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square([tw, eps], center = true);
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}
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}
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module printed_pulley(type) { //! Draw a printable pulley
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ft = pulley_flange_thickness(type);
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hl = pulley_hub_length(type);
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w = pulley_width(type);
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r1 = pulley_bore(type) / 2;
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or = pulley_od(type) / 2;
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screw_z = pulley_screw_z(type);
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stl(str("printed_pulley_", type[0]));
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module core() {
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translate_z(pulley_hub_length(type) + ft)
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linear_extrude(w + 1) let($fa = 1, $fs = 0.1)
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if ("GT2" == str(pulley_type(type)[0], pulley_type(type)[1], pulley_type(type)[2]))
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difference() {
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printed_pulley_GT2_teeth(type);
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circle(d = pulley_bore(type));
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}
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else
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difference() {
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circle(or);
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printed_pulley_teeth(type);
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circle(d = pulley_bore(type));
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}
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}
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module screw_holes() {
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if(pulley_screws(type))
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translate_z(screw_z)
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for(i = [0 : pulley_screws(type) - 1])
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rotate([-90, 180, i * -90])
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teardrop(r = screw_pilot_hole(pulley_screw(type)), h = pulley_flange_dia(type) / 2 + 1, center = false);
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}
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module hub()
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linear_extrude(hl)
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difference() {
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circle(d= pulley_hub_dia(type));
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circle(d = pulley_bore(type));
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}
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translate_z(printed_pulley_inverted(type) ? - hl : 0) {
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// hub
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if(hl)
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translate_z(printed_pulley_inverted(type) ? hl + w + 2 * ft : 0)
|
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if(screw_z && screw_z < hl)
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render() difference() {
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hub();
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screw_holes();
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}
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else
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hub();
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// bottom flange
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translate_z(hl)
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linear_extrude(ft)
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difference() {
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circle(d = pulley_flange_dia(type));
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circle(d = pulley_bore(type));
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}
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// top flange
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translate_z(hl + ft + w) {
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// inner part, supported by core
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linear_extrude(ft)
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difference() {
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circle(r = or);
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circle(d = pulley_bore(type));
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}
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// outer part at 45 degrees for printing
|
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rotate_extrude()
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translate([or -eps , ft])
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vflip()
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right_triangle(ft, ft);
|
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}
|
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|
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if(screw_z && screw_z > hl)
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render()
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difference() { // T5 pulleys have screws through the teeth
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core();
|
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|
||||
translate_z(printed_pulley_inverted(type) ? hl : 0)
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screw_holes();
|
||||
}
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else
|
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core();
|
||||
}
|
||||
}
|
||||
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module printed_pulley_assembly(type, colour = pp1_colour) //! Draw a printed pulley with its grub screws in place
|
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assembly(str("printed_pulley_", type[0])) {
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translate_z(pulley_offset(type)) {
|
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stl_colour(colour)
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if(printed_pulley_inverted(type))
|
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translate_z(pulley_height(type))
|
||||
hflip()
|
||||
printed_pulley(type);
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else
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printed_pulley(type);
|
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|
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if (pulley_screws(type))
|
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translate_z(pulley_screw_z(type))
|
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for(i = [0 : pulley_screws(type) - 1])
|
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rotate([-90, 0, i * -90])
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translate_z(pulley_bore(type) / 2 + pulley_screw_length(type))
|
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screw(pulley_screw(type), pulley_screw_length(type));
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}
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}
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79
readme.md
79
readme.md
@ -37,12 +37,12 @@ See [usage](docs/usage.md) for requirements, installation instructions and a usa
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<tr><td> <a href = "#Extrusions">Extrusions</a> </td><td> <a href = "#Opengrab">Opengrab</a> </td><td> <a href = "#Stepper_motors">Stepper_motors</a> </td><td> <a href = "#PSU_shroud">PSU_shroud</a> </td><td> <a href = "#Rounded_right_triangle">Rounded_right_triangle</a> </td><td></td></tr>
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<tr><td> <a href = "#Fans">Fans</a> </td><td> <a href = "#PCB">PCB</a> </td><td> <a href = "#Swiss_clips">Swiss_clips</a> </td><td> <a href = "#Press_fit">Press_fit</a> </td><td> <a href = "#Sector">Sector</a> </td><td></td></tr>
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<tr><td> <a href = "#Fuseholder">Fuseholder</a> </td><td> <a href = "#PCBs">PCBs</a> </td><td> <a href = "#Toggles">Toggles</a> </td><td> <a href = "#Printed_box">Printed_box</a> </td><td> <a href = "#Sweep">Sweep</a> </td><td></td></tr>
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||||
<tr><td> <a href = "#Geared_steppers">Geared_steppers</a> </td><td> <a href = "#PSUs">PSUs</a> </td><td> <a href = "#Transformers">Transformers</a> </td><td> <a href = "#Ribbon_clamp">Ribbon_clamp</a> </td><td> <a href = "#Thread">Thread</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#Green_terminals">Green_terminals</a> </td><td> <a href = "#Panel_meters">Panel_meters</a> </td><td> <a href = "#Tubings">Tubings</a> </td><td> <a href = "#SSR_shroud">SSR_shroud</a> </td><td> <a href = "#Tube">Tube</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#Hot_ends">Hot_ends</a> </td><td> <a href = "#Pillars">Pillars</a> </td><td> <a href = "#Variacs">Variacs</a> </td><td> <a href = "#Screw_knob">Screw_knob</a> </td><td></td><td></td></tr>
|
||||
<tr><td> <a href = "#Hygrometer">Hygrometer</a> </td><td> <a href = "#Pin_headers">Pin_headers</a> </td><td> <a href = "#Veroboard">Veroboard</a> </td><td> <a href = "#Socket_box">Socket_box</a> </td><td></td><td></td></tr>
|
||||
<tr><td> <a href = "#IECs">IECs</a> </td><td> <a href = "#Pulleys">Pulleys</a> </td><td> <a href = "#Washers">Washers</a> </td><td> <a href = "#Strap_handle">Strap_handle</a> </td><td></td><td></td></tr>
|
||||
<tr><td> <a href = "#Inserts">Inserts</a> </td><td></td><td> <a href = "#Wire">Wire</a> </td><td></td><td></td><td></td></tr>
|
||||
<tr><td> <a href = "#Geared_steppers">Geared_steppers</a> </td><td> <a href = "#PSUs">PSUs</a> </td><td> <a href = "#Transformers">Transformers</a> </td><td> <a href = "#Printed_pulleys">Printed_pulleys</a> </td><td> <a href = "#Thread">Thread</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#Green_terminals">Green_terminals</a> </td><td> <a href = "#Panel_meters">Panel_meters</a> </td><td> <a href = "#Tubings">Tubings</a> </td><td> <a href = "#Ribbon_clamp">Ribbon_clamp</a> </td><td> <a href = "#Tube">Tube</a> </td><td></td></tr>
|
||||
<tr><td> <a href = "#Hot_ends">Hot_ends</a> </td><td> <a href = "#Pillars">Pillars</a> </td><td> <a href = "#Variacs">Variacs</a> </td><td> <a href = "#SSR_shroud">SSR_shroud</a> </td><td></td><td></td></tr>
|
||||
<tr><td> <a href = "#Hygrometer">Hygrometer</a> </td><td> <a href = "#Pin_headers">Pin_headers</a> </td><td> <a href = "#Veroboard">Veroboard</a> </td><td> <a href = "#Screw_knob">Screw_knob</a> </td><td></td><td></td></tr>
|
||||
<tr><td> <a href = "#IECs">IECs</a> </td><td> <a href = "#Pulleys">Pulleys</a> </td><td> <a href = "#Washers">Washers</a> </td><td> <a href = "#Socket_box">Socket_box</a> </td><td></td><td></td></tr>
|
||||
<tr><td> <a href = "#Inserts">Inserts</a> </td><td></td><td> <a href = "#Wire">Wire</a> </td><td> <a href = "#Strap_handle">Strap_handle</a> </td><td></td><td></td></tr>
|
||||
<tr><td></td><td></td><td> <a href = "#Zipties">Zipties</a> </td><td></td><td></td><td></td></tr>
|
||||
</table>
|
||||
|
||||
@ -5041,6 +5041,73 @@ It can also have printed feet on the base with the screws doubling up to hold th
|
||||
| 1 | box2_assembly |
|
||||
|
||||
|
||||
<a href="#top">Top</a>
|
||||
|
||||
---
|
||||
<a name="Printed_pulleys"></a>
|
||||
## Printed_pulleys
|
||||
Printed pulleys are a remix of droftarts's (see <https://www.thingiverse.com/droftarts/designs>) Parametric Pulleys
|
||||
on Thingiverse (see <https://www.thingiverse.com/thing:16627>) and are licensed under the
|
||||
Creative Commons - Attribution - Share Alike license (see <https://creativecommons.org/licenses/by-sa/3.0/>)
|
||||
|
||||
[printed/printed_pulleys.scad](printed/printed_pulleys.scad) Implementation.
|
||||
|
||||
[tests/printed_pulleys.scad](tests/printed_pulleys.scad) Code for this example.
|
||||
|
||||
### Functions
|
||||
| Function | Description |
|
||||
|:--- |:--- |
|
||||
| `printed_pulley_inverted(type)` | Need to print upside down to prevent overhang |
|
||||
|
||||
### Modules
|
||||
| Module | Description |
|
||||
|:--- |:--- |
|
||||
| `printed_pulley(type)` | Draw a printable pulley |
|
||||
| `printed_pulley_assembly(type, colour = pp1_colour)` | Draw a printed pulley with its grub screws in place |
|
||||
| `printed_pulley_teeth(type)` | Draw the pulley's teeth |
|
||||
|
||||
|
||||
|
||||
### Vitamins
|
||||
| Qty | Module call | BOM entry |
|
||||
| ---:|:--- |:---|
|
||||
| 1 | `screw(M3_grub_screw, 3)` | Screw M3 grub x 3mm |
|
||||
| 2 | `screw(M3_grub_screw, 4.5)` | Screw M3 grub x 4.5mm |
|
||||
| 2 | `screw(M3_grub_screw, 4)` | Screw M3 grub x 4mm |
|
||||
| 4 | `screw(M3_grub_screw, 6)` | Screw M3 grub x 6mm |
|
||||
| 1 | `screw(M4_grub_screw, 6)` | Screw M4 grub x 6mm |
|
||||
|
||||
### Printed
|
||||
| Qty | Filename |
|
||||
| ---:|:--- |
|
||||
| 1 | printed_pulley_GT2x12_pulley.stl |
|
||||
| 1 | printed_pulley_GT2x16_plain_idler.stl |
|
||||
| 1 | printed_pulley_GT2x16_pulley.stl |
|
||||
| 1 | printed_pulley_GT2x16_toothed_idler.stl |
|
||||
| 1 | printed_pulley_GT2x16x7_plain_idler.stl |
|
||||
| 1 | printed_pulley_GT2x20_plain_idler.stl |
|
||||
| 1 | printed_pulley_GT2x20_toothed_idler.stl |
|
||||
| 1 | printed_pulley_GT2x20ob_pulley.stl |
|
||||
| 1 | printed_pulley_GT2x20um_pulley.stl |
|
||||
| 1 | printed_pulley_T2p5x16_pulley.stl |
|
||||
| 1 | printed_pulley_T5x10_pulley.stl |
|
||||
|
||||
### Assemblies
|
||||
| Qty | Name |
|
||||
| ---:|:--- |
|
||||
| 1 | printed_pulley_GT2x12_pulley_assembly |
|
||||
| 1 | printed_pulley_GT2x16_plain_idler_assembly |
|
||||
| 1 | printed_pulley_GT2x16_pulley_assembly |
|
||||
| 1 | printed_pulley_GT2x16_toothed_idler_assembly |
|
||||
| 1 | printed_pulley_GT2x16x7_plain_idler_assembly |
|
||||
| 1 | printed_pulley_GT2x20_plain_idler_assembly |
|
||||
| 1 | printed_pulley_GT2x20_toothed_idler_assembly |
|
||||
| 1 | printed_pulley_GT2x20ob_pulley_assembly |
|
||||
| 1 | printed_pulley_GT2x20um_pulley_assembly |
|
||||
| 1 | printed_pulley_T2p5x16_pulley_assembly |
|
||||
| 1 | printed_pulley_T5x10_pulley_assembly |
|
||||
|
||||
|
||||
<a href="#top">Top</a>
|
||||
|
||||
---
|
||||
|
||||
BIN
tests/png/printed_pulleys.png
Normal file
BIN
tests/png/printed_pulleys.png
Normal file
Binary file not shown.
|
After Width: | Height: | Size: 115 KiB |
Binary file not shown.
|
Before Width: | Height: | Size: 43 KiB After Width: | Height: | Size: 45 KiB |
45
tests/printed_pulleys.scad
Normal file
45
tests/printed_pulleys.scad
Normal file
@ -0,0 +1,45 @@
|
||||
//
|
||||
// NopSCADlib Copyright Chris Palmer 2020
|
||||
// nop.head@gmail.com
|
||||
// hydraraptor.blogspot.com
|
||||
//
|
||||
// This file is part of NopSCADlib.
|
||||
//
|
||||
// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the
|
||||
// GNU General Public License as published by the Free Software Foundation, either version 3 of
|
||||
// the License, or (at your option) any later version.
|
||||
//
|
||||
// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
|
||||
// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
||||
// See the GNU General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU General Public License along with NopSCADlib.
|
||||
// If not, see <https://www.gnu.org/licenses/>.
|
||||
//
|
||||
|
||||
include <../core.scad>
|
||||
include <../vitamins/pulleys.scad>
|
||||
include <../printed/printed_pulleys.scad>
|
||||
use <../utils/layout.scad>
|
||||
|
||||
|
||||
module printed_pulley_test(show_metal = false) {
|
||||
layout([for (p = pulleys) pulley_flange_dia(p)]) let(p = pulleys[$i]) {
|
||||
rotate(-145)
|
||||
if($preview)
|
||||
printed_pulley_assembly(p);
|
||||
else
|
||||
printed_pulley(p);
|
||||
|
||||
if(show_metal)
|
||||
not_on_bom()
|
||||
translate([0, 20])
|
||||
rotate(-145)
|
||||
pulley_assembly(p);
|
||||
}
|
||||
}
|
||||
|
||||
if($preview)
|
||||
printed_pulley_test(true);
|
||||
else
|
||||
printed_pulley_test();
|
||||
@ -23,7 +23,7 @@ include <../vitamins/pulleys.scad>
|
||||
|
||||
module pulleys()
|
||||
layout([for(p = pulleys) pulley_flange_dia(p)])
|
||||
rotate(-45)
|
||||
rotate(-145)
|
||||
pulley_assembly(pulleys[$i]);
|
||||
|
||||
if($preview)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user