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Assembly work. Adjusted design to simplify placement of 2 linear bearings

This commit is contained in:
Matt McWilliams 2023-01-04 23:11:48 -05:00
parent 1029885047
commit 46be1bfd3b
1 changed files with 40 additions and 25 deletions
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65
scad/jk_lens_assembly.scad
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@ -29,6 +29,10 @@ XWidth = 50;
FrontOffset = 0;
BackOffset = 10;
LinearMotionX = 22;
LinearMotionY = 20;
LinearMotionZ = 14;
module linearBearing (pad = 0) {
difference () {
cylinder(r = R(LinearBearingOuterDiameter + pad), h = LinearBearingHeight, center = true, $fn = 100);
@ -105,9 +109,6 @@ module lensAssemblyBellowsBoard () {
module lensAssemblyThreadedZ () {
Z = 90;
LinearMotionX = 22;
LinearMotionY = 20;
LinearMotionZ = 14;
difference () {
union () {
//main cylinder
@ -131,13 +132,13 @@ module lensAssemblyThreadedZ () {
//------
//top linear motion rod voids
//
//top gap to close
translate([0, -(LinearMotionY/2) - 8, (Z/2) - (LinearMotionZ/2)]) cube([LinearMotionX + 1, LinearMotionY, 2], center = true);
//rod
translate([0, -(LinearMotionY/2), (Z/2) - (LinearMotionZ/2)]) rotate([0, 90, 0]) cylinder(r = R(LinearMotionDiameter)+.2, h = LinearMotionX + 1, center = true, $fn = 60);
//m4 bolt
//m4 bolt top
translate([0, -(LinearMotionY/2) - 8 + 1, (Z/2) - (LinearMotionZ/2)]) cylinder(r = R(4.25), h = LinearMotionZ + 1, center = true, $fn = 40);
//m4 nut
//m4 nut top
translate([0, -(LinearMotionY/2) - 8 + 1, (Z/2) - (LinearMotionZ/2) - 6]) m4_nut();
//------
//bottom threaded rod void
@ -148,33 +149,45 @@ module lensAssemblyThreadedZ () {
}
module lensAssemblyLinearZ () {
Z = 90 + 15 + 8;
XCorrection = 23.75;
ZLinearBearing = 36.5;
Z = 90;
ZLinearBearing = 31;
difference () {
union () {
//main cylinder
translate([0, 0, 4]) rounded_cube([22, 22, Z], d = 8, $fn = 30, center = true);
//
translate([9, -BackOffset, (Z / 2) - XCorrection]) rotate([0, 90, 0]) cylinder(r = R(22), h = 40, center = true, $fn = 80);
//
translate([0, -BackOffset, -(Z / 2) + 13.5]) rotate([0, 90, 0]) cylinder(r = R(22), h = 22, center = true, $fn = 80);
rounded_cube([22, 22, Z], d = 8, $fn = 30, center = true);
//top
translate([0, -BackOffset, (Z / 2) - (LinearMotionZ/2)]) cube([LinearMotionX, LinearMotionY, LinearMotionZ], center = true);
//bottom
translate([0, -BackOffset, -XOffset]) rotate([0, 90, 0]) cylinder(r = R(22), h = 22, center = true, $fn = 80);
}
//x linear motion rod void
translate([9, -BackOffset, (Z / 2) - XCorrection]) rotate([0, 90, 0]) linearMotionRod(50);
translate([9, -BackOffset, (Z / 2) - (LinearMotionZ/2)]) rotate([0, 90, 0]) linearMotionRod(50, 0.3);
//board void
translate([-8, -BackOffset, -5]) cube([8, 7, 52], center = true);
//x linear bearing
translate([18, -BackOffset, (Z / 2) - XCorrection]) rotate([0, 90, 0]) linearBearing();
//
translate([0, 0, (Z / 2) - 5]) linearBearing();
//z threaded rod
linearMotionRod(250, 0.3);
//top gap to close
translate([0, -(LinearMotionY/2) - 8, (Z/2) - (LinearMotionZ/2)]) cube([LinearMotionX + 1, LinearMotionY, 2], center = true);
//m4 bolt top
translate([0, -(LinearMotionY/2) - 8 + 1, (Z/2) - (LinearMotionZ/2)]) cylinder(r = R(4.25), h = LinearMotionZ + 1, center = true, $fn = 40);
//m4 nut top
translate([0, -(LinearMotionY/2) - 8 + 1, (Z/2) - (LinearMotionZ/2) - 6]) m4_nut();
//flatten bottom
translate([0, -BackOffset, -(Z / 2) - 7]) cube([23, 22, 22], center = true);
//x linear bearing
translate([0, 0, -(Z / 2) + ZLinearBearing]) linearBearing();
translate([LinearBearingOuterDiameter / 2, 0, -(Z / 2) + ZLinearBearing]) cube([LinearBearingOuterDiameter, LinearBearingOuterDiameter, LinearBearingHeight], center = true);
translate([0, -BackOffset, -(Z / 2) - 11]) cube([23, 22, 22], center = true);
//z linear bearing
translate([0, 0, -(Z / 2) + ZLinearBearing]) {
linearBearing(0.25);
translate([LinearBearingOuterDiameter / 2, 0, 0]) cube([LinearBearingOuterDiameter, LinearBearingOuterDiameter, LinearBearingHeight], center = true);
}
//z linear bearing
translate([0, 0, -(Z / 2) + ZLinearBearing + 32]) {
linearBearing(0.25);
translate([LinearBearingOuterDiameter / 2, 0, 0]) cube([LinearBearingOuterDiameter, LinearBearingOuterDiameter, LinearBearingHeight], center = true);
}
//x threaded rod
translate([0, -BackOffset, -(Z / 2) + 13.5]) rotate([0, 90, 0]) threadedRod(50);
translate([0, -BackOffset, -XOffset]) rotate([0, 90, 0]) threadedRod(50, 0.5);
}
}
@ -207,12 +220,14 @@ module debug () {
//translate([15, -5, XOffset]) rotate([0, 90, 0]) color("blue") m4_nut();
}
PART = "lens_assembly_threaded_z";
PART = "lens_assembly_linear_z";
if (PART == "lens_assembly_bellows_board") {
lensAssemblyBellowsBoard();
} else if (PART == "lens_assembly_threaded_z") {
lensAssemblyThreadedZ();
} else if (PART == "lens_assembly_linear_z") {
lensAssemblyLinearZ();
} else {
debug();
}