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Added parameterised CoreXY.

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Martin Budden
2021-03-06 10:10:28 +00:00
parent da4f9fbdc3
commit 4c12d5fca4
2 changed files with 332 additions and 0 deletions
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tests/core_xy_belts.scad Normal file
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//
// 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 <../vitamins/screws.scad>
include <../vitamins/stepper_motors.scad>
include <../vitamins/washers.scad>
include <../utils/core_xy_belts.scad>
module coreXY_belts_test() {
coreXY_type = coreXY_GT2_20_16;
plain_idler = coreXY_plain_idler(coreXY_type);
toothed_idler = coreXY_toothed_idler(coreXY_type);
coreXYPosBL = [0, 0, 0];
coreXYPosTR = [200, 150, 0];
separation = [0, coreXY_coincident_separation(coreXY_type).y, pulley_height(plain_idler) + washer_thickness(M3_washer)];
pos = [100, 50];
upper_drive_pulley_offset = [40, 10];
lower_drive_pulley_offset = [0, 0];
coreXY_belts(coreXY_type,
carriagePosition = pos,
coreXYPosBL = coreXYPosBL,
coreXYPosTR = coreXYPosTR,
separation = separation,
x_gap = 10,
upper_drive_pulley_offset = upper_drive_pulley_offset,
lower_drive_pulley_offset = lower_drive_pulley_offset,
show_pulleys = true);
translate([coreXYPosBL.x + separation.x/2, coreXYPosTR.y + upper_drive_pulley_offset.y, separation.z/2]) {
// add the upper drive pulley stepper motor
translate([coreXY_drive_pulley_x_alignment(coreXY_type) + upper_drive_pulley_offset.x, 0, -pulley_height(coreXY_drive_pulley(coreXY_type))])
NEMA(NEMA17M);
// add the screws for the upper drive offset idler pulleys if required
if (upper_drive_pulley_offset.x > 0) {
translate(coreXY_drive_plain_idler_offset(coreXY_type))
translate_z(-pulley_offset(plain_idler))
screw(M3_cap_screw, 20);
translate(coreXY_drive_toothed_idler_offset(coreXY_type))
translate_z(-pulley_offset(toothed_idler))
screw(M3_cap_screw, 20);
} else if (upper_drive_pulley_offset.x < 0) {
translate([-pulley_od(plain_idler), coreXY_drive_plain_idler_offset(coreXY_type).y])
translate_z(-pulley_offset(plain_idler))
screw(M3_cap_screw, 20);
translate([2*coreXY_drive_pulley_x_alignment(coreXY_type), coreXY_drive_toothed_idler_offset(coreXY_type).y])
translate_z(-pulley_offset(toothed_idler))
screw(M3_cap_screw, 20);
}
}
translate([coreXYPosTR.x - separation.x/2, coreXYPosTR.y + lower_drive_pulley_offset.y, -separation.z/2]) {
// add the lower drive pulley stepper motor
translate([-coreXY_drive_pulley_x_alignment(coreXY_type) + lower_drive_pulley_offset.x, 0, -pulley_height(coreXY_drive_pulley(coreXY_type))])
NEMA(NEMA17M);
// add the screws for the lower drive offset idler pulleys if required
if (lower_drive_pulley_offset.x < 0) {
translate([-coreXY_drive_plain_idler_offset(coreXY_type).x, coreXY_drive_plain_idler_offset(coreXY_type).y])
translate_z(-pulley_offset(plain_idler))
screw(M3_cap_screw, 20);
translate(coreXY_drive_toothed_idler_offset(coreXY_type))
translate_z(-pulley_offset(toothed_idler))
screw(M3_cap_screw, 20);
} else if (lower_drive_pulley_offset.x > 0) {
translate([pulley_od(plain_idler), coreXY_drive_plain_idler_offset(coreXY_type).y])
translate_z(-pulley_offset(plain_idler))
screw(M3_cap_screw, 20);
translate([-2*coreXY_drive_pulley_x_alignment(coreXY_type), coreXY_drive_toothed_idler_offset(coreXY_type).y])
translate_z(-pulley_offset(toothed_idler))
screw(M3_cap_screw, 20);
}
}
// add the screw for the left upper idler pulley
translate([coreXYPosBL.x + separation.x/2, coreXYPosBL.y, separation.z])
screw(M3_cap_screw, 20);
// add the screw for the right upper idler pulley
translate([coreXYPosTR.x + separation.x/2, coreXYPosBL.y, separation.z])
screw(M3_cap_screw, 20);
if (separation.x != 0) {
// add the screw for the left lower idler pulley
translate([coreXYPosBL.x - separation.x/2, coreXYPosBL.y, 0])
screw(M3_cap_screw, 20);
// add the screw for the right lower idler pulley
translate([coreXYPosTR.x - separation.x/2, coreXYPosBL.y, 0])
screw(M3_cap_screw, 20);
}
translate([-separation.x/2, pos.y + coreXYPosBL.y -separation.y/2, -separation.z/2 + pulley_height(plain_idler)/2]) {
// add the screw for the left Y carriage toothed idler
translate([coreXYPosBL.x, coreXY_toothed_idler_offset(coreXY_type).y, 0])
screw(M3_cap_screw, 20);
// add the screw for the left Y carriage plain idler
translate([coreXYPosBL.x + separation.x + coreXY_plain_idler_offset(coreXY_type).x, separation.y + coreXY_plain_idler_offset(coreXY_type).y, separation.z])
screw(M3_cap_screw, 20);
// add the screw for the right Y carriage toothed idler
translate([coreXYPosTR.x + separation.x, coreXY_toothed_idler_offset(coreXY_type).y, separation.z])
screw(M3_cap_screw, 20);
// add the screw for the right Y carriage plain idler
translate([coreXYPosTR.x - coreXY_plain_idler_offset(coreXY_type).x, separation.y + coreXY_plain_idler_offset(coreXY_type).y, 0])
screw(M3_cap_screw, 20);
}
}
if ($preview)
coreXY_belts_test();