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Final adjustments to mechanical bits before printing starts

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TQ Hirsch
2022-04-29 22:32:52 +02:00
parent 7abbb821ec
commit f73300ff4b
2 changed files with 12 additions and 7 deletions
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15
mechanical/parts.scad
View File

@@ -4,6 +4,7 @@ include <stock_parts.scad>
include <units.inc> include <units.inc>
frame_size = 20; frame_size = 20;
frame_expansion = 0.2; // expansion on each side
wall_thickness = 2; wall_thickness = 2;
corner_size = 40; // length of mating surface between corner and frame corner_size = 40; // length of mating surface between corner and frame
// The length along each edge that the corner bracket takes. I.e., if // The length along each edge that the corner bracket takes. I.e., if
@@ -23,7 +24,7 @@ belt_height2 = belt_height1 + belt_width + 2;
ysled_rail_spacing = (sled_ysize); ysled_rail_spacing = (sled_ysize);
motor_shaft_xoffset = 15; motor_shaft_xoffset = 15;
motor_mount_length_adjustment = 8; motor_mount_length_adjustment = 5;
motor_mount_length = nema17_face + wall_thickness + motor_mount_length_adjustment; motor_mount_length = nema17_face + wall_thickness + motor_mount_length_adjustment;
// distance between centerline of rail and centerline of frame Y tube. // distance between centerline of rail and centerline of frame Y tube.
@@ -53,10 +54,10 @@ module corner_base(extension = wall_thickness) {
polygon(points = cap_points); polygon(points = cap_points);
// two bars... // two bars...
translate([ -frame_size / 2, actual_corner_offset, -frame_size / 2 ]) translate([ -frame_size / 2 - frame_expansion, actual_corner_offset, -frame_size / 2 - frame_expansion ])
cube([ frame_size, ldim, frame_size ]); cube([ frame_size + frame_expansion*2, ldim, frame_size + frame_expansion*2 ]);
translate([ actual_corner_offset, -frame_size / 2, -frame_size / 2 ]) translate([ actual_corner_offset, -frame_size / 2 - frame_expansion, -frame_size / 2 - frame_expansion ])
cube([ ldim, frame_size, frame_size ]); cube([ ldim, frame_size + frame_expansion * 2, frame_size + frame_expansion*2 ]);
// Screw holes // Screw holes
for (pos = [10, 30], for (pos = [10, 30],
@@ -70,7 +71,7 @@ module corner_base(extension = wall_thickness) {
} }
// Adjustable feet // Adjustable feet
cylinder(d=8, h=odim * 2 + 1, center=true, $fn = screw_num_sides); cylinder(d=m6_insert_d, h=odim * 2 + 1, center=true);
} }
} }
@@ -177,7 +178,7 @@ module nema17_housing() {
translate([ 0, -nema17_face / 2 - frame_size / 2 - wall_thickness, 0 ]) { translate([ 0, -nema17_face / 2 - frame_size / 2 - wall_thickness, 0 ]) {
slotify(slot_vector) { slotify(slot_vector) {
translate([ 0, 0, -belt_height2/2 - wall_thickness ]) translate([ 0, 0, -belt_height2/2 - wall_thickness ])
cube([ nema17_face + 1, nema17_face + 1, hdepth + belt_height2 ], center = true); cube([ nema17_face + 2, nema17_face + 2, hdepth + belt_height2 ], center = true);
cylinder(d = 23, frame_size); cylinder(d = 23, frame_size);
} }
for (x = [-1, 1], y = [-1,1]) { for (x = [-1, 1], y = [-1,1]) {

4
mechanical/stock_parts.scad
View File

@@ -8,6 +8,10 @@ bushing_len = 24;
nema17_face = 42.3; nema17_face = 42.3;
m3_insert_d = 4.2;
m5_insert_d = 7.5;
m6_insert_d = 8.2;
module colorize(colorname) { module colorize(colorname) {
if (use_colors) { if (use_colors) {
color(colorname) union() { children(); } color(colorname) union() { children(); }