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Adjust the position of the Z axis, move the linear bearing up and down to prevent binding on motion

This commit is contained in:
Matt McWilliams 2023-01-14 15:25:53 -05:00
parent 92067bdbef
commit 0b816ae8e1
1 changed files with 21 additions and 24 deletions
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45
scad/jk_lens_assembly.scad
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@ -27,7 +27,7 @@ ZOffset = 120;
XOffset = 38;
XWidth = 50;
FrontOffset = 0;
BackOffset = 10;
BackOffset = 15;
LinearMotionX = 22;
LinearMotionY = 20;
@ -127,6 +127,10 @@ module lensAssemblyBellowsBoard () {
}
}
module topLinearAttachmentBlock () {
cube([LinearMotionX, LinearMotionY + 2, LinearMotionZ], center = true);
}
module lensAssemblyThreadedZ () {
Z = 90;
difference () {
@ -134,7 +138,7 @@ module lensAssemblyThreadedZ () {
//main cylinder
rounded_cube([22, 22, Z], d = 8, $fn = 30, center = true);
//top linear motion rod attachment block
translate([0, -(LinearMotionY/2), (Z/2) - (LinearMotionZ/2)]) cube([LinearMotionX, LinearMotionY, LinearMotionZ], center = true);
translate([0, -BackOffset, (Z/2) - (LinearMotionZ/2)]) topLinearAttachmentBlock();
//bottom threaded rod block
translate([0, -BackOffset, -XOffset]) rotate([0, 90, 0]) cylinder(r = R(22), h = 22, center = true, $fn = 80);
}
@ -143,8 +147,6 @@ module lensAssemblyThreadedZ () {
threadedRod(Z + 20, 0.5);
//board nut void
translate([0, -10, 0]) rotate([0, 90, 0]) cylinder(r = R(12), h = 30, center = true, $fn = 40);
//board void
translate([8, -BackOffset, 0]) cube([8, 7, 52], center = true);
//T nuts
//top
translate([0, 0, (Z / 2) - 4]) rotate([180, 0, 0]) TNut(0.3, 0.3);
@ -169,13 +171,13 @@ 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);
translate([0, -(LinearMotionY/2) - 9, (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);
translate([0, -BackOffset, (Z/2) - (LinearMotionZ/2)]) rotate([0, 90, 0]) cylinder(r = R(LinearMotionDiameter)+.2, h = LinearMotionX + 1, center = true, $fn = 60);
//m4 bolt top
translate([0, -(LinearMotionY/2) - 8 + 1, (Z/2) - (LinearMotionZ/2)]) m4Bolt(LinearMotionZ + 1);
translate([0, -BackOffset - 8 + 2, (Z/2) - (LinearMotionZ/2)]) m4Bolt(LinearMotionZ + 1);
//m4 nut top
translate([0, -(LinearMotionY/2) - 8 + 1, (Z/2) - (LinearMotionZ/2) - 6]) m4_nut();
translate([0, -BackOffset - 8 + 2, (Z/2) - (LinearMotionZ/2) - 6]) m4_nut();
//------
//bottom threaded rod void
translate([0, -BackOffset, -XOffset]) rotate([0, 90, 0]) threadedRod(22 + 1, 0.5);
@ -186,41 +188,36 @@ module lensAssemblyThreadedZ () {
module lensAssemblyLinearZ () {
Z = 90;
ZLinearBearing = 31;
difference () {
union () {
//main cylinder
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);
translate([0, -BackOffset, (Z / 2) - (LinearMotionZ/2)]) topLinearAttachmentBlock();
//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) - (LinearMotionZ/2)]) rotate([0, 90, 0]) linearMotionRod(50, 0.3);
//board void
translate([-8, -BackOffset, -5]) cube([8, 7, 52], center = true);
//z linear motion rod
linearMotionRod(250, 0.6);
//top gap to close
translate([0, -(LinearMotionY/2) - 8, (Z/2) - (LinearMotionZ/2)]) cube([LinearMotionX + 1, LinearMotionY, 2], center = true);
translate([0, -(LinearMotionY/2) - 9, (Z/2) - (LinearMotionZ/2)]) cube([LinearMotionX + 1, LinearMotionY, 2], center = true);
//m4 bolt top
translate([0, -(LinearMotionY/2) - 8 + 1, (Z/2) - (LinearMotionZ/2)]) m4Bolt(LinearMotionZ + 1);
translate([0, -BackOffset - 8 + 2, (Z/2) - (LinearMotionZ/2)]) m4Bolt(LinearMotionZ + 1);
//m4 nut top
translate([0, -(LinearMotionY/2) - 8 + 1, (Z/2) - (LinearMotionZ/2) - 6]) m4_nut();
translate([0, -BackOffset - 8 + 2, (Z/2) - (LinearMotionZ/2) - 6]) m4_nut();
//flatten bottom
translate([0, -BackOffset, -(Z / 2) - 11]) cube([23, 22, 22], center = true);
//z linear bearing
translate([0, 0, -(Z / 2) + ZLinearBearing]) {
translate([0, 0, -(Z / 2) + (LinearBearingHeight / 2) - 2 ]) {
linearBearing(0.25, 0.3);
translate([LinearBearingOuterDiameter / 2, 0, 0]) cube([LinearBearingOuterDiameter, LinearBearingOuterDiameter + 0.25, LinearBearingHeight + 0.3], center = true);
}
//z linear bearing
translate([0, 0, -(Z / 2) + ZLinearBearing + 32]) {
translate([0, 0, (Z / 2) - (LinearBearingHeight / 2) + 2]) {
linearBearing(0.25, 0.3);
translate([LinearBearingOuterDiameter / 2, 0, 0]) cube([LinearBearingOuterDiameter, LinearBearingOuterDiameter + 0.25, LinearBearingHeight + 0.3], center = true);
}
//x threaded rod
translate([0, -BackOffset, -XOffset]) rotate([0, 90, 0]) threadedRod(50, 0.5);
@ -272,11 +269,11 @@ module debug () {
translate([-ZOffset/2, BackOffset, 0]) lensAssemblyThreadedZ();
translate([ZOffset/2, BackOffset, 0]) lensAssemblyLinearZ();
translate([ZOffset/2, 10, 18]) color("green") linearBearing();
translate([ZOffset/2, 10, -14]) color("green") linearBearing();
translate([ZOffset/2, BackOffset, (90 / 2) - (LinearBearingHeight / 2) + 2]) color("green") linearBearing();
translate([ZOffset/2, BackOffset, -(90 / 2) + (LinearBearingHeight / 2) - 2]) color("green") linearBearing();
translate([-ZOffset/2, 10, 40]) rotate([180, 0, 0]) TNut();
translate([-ZOffset/2, 10, -40]) TNut();
translate([-ZOffset/2, BackOffset, 40]) rotate([180, 0, 0]) TNut();
translate([-ZOffset/2, BackOffset, -40]) TNut();
//X axis
translate([0, -FrontOffset, -XOffset]) rotate([0, 90, 0]) threadedRod(RodLength);
@ -301,7 +298,7 @@ module debug () {
translate([0, BackOffset, -70]) lensAssemblyBaseZ();
}
PART = "lens_assembly_linear_z";
PART = "lens_assembly_threaded_z";
if (PART == "lens_assembly_bellows_board") {
lensAssemblyBellowsBoard();