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motor_mount.scad
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motor_mount.scad
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include <plsq.scad>
/**
* Piece to mount a single motor to an arm
*
* @id plsq-motor-mount
* @name PLSQ Motor Mount
* @category Printed
* @using 4 m3washer
* @using 4 m3x10
* @using brushless-motor
* @param bool raft Whether or not to make a raft
*/
module motor_mount(raft = true) {
assign(both_pad = mm_open_pad1 + mm_open_pad2)
assign(conn_l = mm_arm_l - mm_open_l - both_pad)
assign(center_offset = tolerance + 0.05)
assign(negx = mm_open_pad2 - 0.1)
translate([0, 1.175, 0])
rotate([0, 0, 2]) {
if(raft) {
translate([-mm_arm_half1 - mm_raft_r + 0.2,
-mm_arm_runner / 2, 0]) {
cylinder(h = th, r = mm_raft_r);
}
}
difference() {
union() {
// Motor mount arm
translate([-mm_arm_half1, -mm_arm_runner, 0]) {
cube([mm_arm_l, mm_arm_runner,
a_tall_th + mm_arm_th / 2]);
translate([0, mm_arm_runner / 2, mm_arm_short_r +
a_tall_th + center_offset])
rotate([0, 90, 0]) {
difference() {
union() {
cylinder(h = conn_l + 0.1, r = mm_arm_short_r);
translate([center_offset, 0, conn_l]) {
cylinder(h = mm_open_l + both_pad,
r = mm_arm_tall_r);
}
}
translate([0, 0, -0.1]) {
cylinder(h = mm_arm_l - mm_open_l -
mm_open_pad2 + 0.2,
r = mm_arm_short_r - mm_arm_th);
}
translate([mm_arm_short_r + a_tall_th +
center_offset, -mm_arm_runner / 2, 0]) {
cube([1, mm_arm_runner, mm_arm_l + 0.1]);
}
translate([-mm_arm_tall_r, -mm_arm_tall_r,
conn_l + mm_open_pad1]) {
cube([mm_arm_tall_r, 2 * mm_arm_tall_r,
mm_open_l]);
}
}
}
}
// Motor mount cup
translate([-mm_arm_half1 + mm_arm_l - negx + mm_cup_r1,
-mm_arm_runner / 2, 0]) {
difference() {
hull() {
translate([0, 0, mm_cup_base_h]) {
cylinder(h = mm_cup_h1, r = mm_cup_r1);
}
cylinder(h = mm_cup_h2, r1 = mm_cup_r2, r2 = mm_cup_r3);
}
// Depression
translate([0, 0, mm_cup_base_h - mm_cup_dep_h]) {
cylinder(h = mm_cup_dep_h + 0.1, r1 = mm_cup_dep_r1,
r2 = mm_cup_dep_r2, $fn = 30);
}
// Holes
for(i = [45 : 90 : 360 - 45]) {
translate([-0.08, 0, 0])
rotate([0, 0, i])
assign(factor = (i == 45 || i == 225 ? 1.15 : 1.01))
translate([factor * mm_cup_r2 / 2, 0, -0.1]) {
hull() {
cylinder(h = mm_cup_hole_h1 + 0.1,
r = mm_cup_hole_r1, $fn = 30);
translate([0, 0, mm_cup_base_h -
2 * mm_cup_hole_h2]) {
cylinder(h = mm_cup_hole_h2,
r = mm_cup_hole_r2, $fn = 30);
}
}
translate([0, 0, mm_cup_base_h -
mm_cup_hole_h2]) {
cylinder(h = mm_cup_hole_h2 + 0.2,
r = mm_cup_hole_r2, $fn = 30);
}
}
}
}
}
}
// Some global differences
assign(extra = 2)
assign(diff = 1.4)
assign(r1 = mm_arm_short_r - mm_arm_th + diff)
translate([-mm_arm_half1, -mm_arm_runner, 0])
translate([0, mm_arm_runner / 2, mm_arm_short_r + a_tall_th +
center_offset])
rotate([0, 90, 0])
translate([center_offset, 0, conn_l + mm_open_pad1]) {
difference() {
cylinder(h = mm_open_l + mm_open_pad2 + extra, r = r1);
// Ramp into the cup, not the best solution, but w/e
translate([0, 0, mm_open_l]) {
// I <3 hull
hull() {
translate([0.3, 0, 0])
difference() {
translate([0.05, 0, 0]) {
cylinder(h = 0.01, r = r1);
}
scale([1, 1.1, 1])
translate([0, 0, -0.1]) {
cylinder(h = 0.21, r = r1);
}
}
assign(r2 = mm_cup_r2 - mm_cup_th + 2)
difference() {
translate([0, 0, mm_open_pad2]) {
cylinder(h = extra, r = (2 * r1 > r2) ?
(r2 / 2) : r1, $fn = 100);
}
rotate([0, -90, 0]) {
translate([mm_cup_r1, 0, -mm_arm_short_r -
a_tall_th + mm_cup_base_h]) {
cylinder(h = mm_cup_h2 -
mm_cup_base_h + 0.1,
r = r2);
}
}
}
}
}
}
}
translate([-mm_arm_half1 + mm_arm_l - negx + mm_cup_r1,
-mm_arm_runner / 2, 0])
translate([0, 0, mm_cup_base_h]) {
cylinder(h = mm_cup_h2 - mm_cup_base_h + 0.1,
r = mm_cup_r2 - mm_cup_th);
}
}
}
}