mirror of
https://github.com/nophead/Mendel90.git
synced 2025-08-31 08:45:34 +02:00
9345a5b85a
Filled some gaps in the X ends to make them faster to print. D motor bracket lid now one piece again, as PCB now clears it. Calibration object now includes horizontal nut traps. Add c14n_stl.py to canonicalise the STL files. Corrected PLA sample diameter. Removed feed tube connector, works fine without it. Removed tube jig as not required in the kit. Manual updated with new part renders.
126 lines
4.5 KiB
OpenSCAD
126 lines
4.5 KiB
OpenSCAD
//
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// Mendel90
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//
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// GNU GPL v2
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// nop.head@gmail.com
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// hydraraptor.blogspot.com
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//
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// For the y carriage
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//
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include <conf/config.scad>
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include <positions.scad>
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use <bearing-holder.scad>
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use <bar-clamp.scad>
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nutty = cnc_sheets;
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slot = nutty ? 0 : 2;
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tab_length = bearing_clamp_tab + slot;
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function bearing_mount_width(bearing) = bearing_holder_width(bearing) + 2 * tab_length;
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function bearing_mount_length(bearing) = bearing_holder_length(bearing);
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module tab() {
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linear_extrude(height = bearing_clamp_tab_height + (nutty ? nut_trap_depth(nut) : 0), center = false, convexity = 6)
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difference() {
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union() {
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translate([(bearing_clamp_tab / 2 + slot) / 2, 0])
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square([bearing_clamp_tab / 2 + slot, bearing_clamp_tab], center = true);
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translate([bearing_clamp_tab / 2 + slot ,0])
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circle(r = bearing_clamp_tab/ 2, center = true);
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}
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if(!nutty) {
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translate([bearing_clamp_tab / 2, 0])
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circle(r = screw_clearance_radius, center = true);
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translate([bearing_clamp_tab / 2 + slot, 0, 0])
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circle(r = screw_clearance_radius, center = true);
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translate([bearing_clamp_tab / 2 + slot / 2, 0])
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square([slot, screw_clearance_radius * 2], center = true);
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}
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}
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}
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nut_offset = nutty ? -bearing_clamp_tab / 2 + nut_radius(nut) + 0.5 : 0;
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module bearing_mount(bearing, height) {
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endstop_w = bar_clamp_switch_x_offset() + microswitch_thickness() / 2 - bearing_holder_width(bearing) / 2;
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endstop_d = 3;
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endstop_h = 3;
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endstop_inset = bearing_holder_width(bearing) / 2 - bearing_radius(bearing);
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rad = 7;
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endstop_root_inset = (1 - sqrt(0.5)) * rad;
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stl("y_bearing_mount");
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color(y_bearing_mount_color) union() {
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bearing_holder(bearing, height, rad = rad);
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for(end = [-1, 1])
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translate([end * (bearing_holder_width(bearing) / 2 - eta), -end * (bearing_holder_length(bearing) - bearing_clamp_tab)/2, -height])
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difference() {
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rotate([0, 0, 90 - end * 90])
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tab();
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if(nutty)
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translate([end * (tab_length / 2 + nut_offset), 0, bearing_clamp_tab_height + nut_trap_depth(nut)])
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nut_trap(screw_clearance_radius, nut_radius, nut_trap_depth(nut));
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}
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hull() {
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translate([-(bearing_holder_width(bearing) / 2 + endstop_w / 2 - endstop_inset / 2 - eta),
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-(bearing_holder_length(bearing) / 2 - endstop_d / 2),
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-bar_clamp_switch_z_offset()])
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cube([endstop_w + endstop_inset, endstop_d, endstop_h], center = true);
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translate([-(bearing_holder_width(bearing) / 2 - endstop_root_inset - eta),
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-(bearing_holder_length(bearing) / 2 - endstop_root_inset - eta),
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- height + bearing_clamp_tab_height])
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cube(1);
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}
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}
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}
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module bearing_mount_holes()
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for(end = [-1, 1])
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translate([end * (bearing_holder_width(Y_bearings) / 2 + tab_length / 2 + nut_offset),
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-end * (bearing_holder_length(Y_bearings) - bearing_clamp_tab ) / 2, 0])
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child();
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module y_bearing_assembly(height)
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{
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color(y_bearing_mount_color) render() bearing_mount(Y_bearings, height);
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rotate([0,0,90]) {
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linear_bearing(Y_bearings);
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rotate([0,90,0])
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scale([bearing_radius(X_bearings) / bearing_ziptie_radius(X_bearings), 1])
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ziptie(small_ziptie, bearing_ziptie_radius(Y_bearings));
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}
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//
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// Fasterners
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//
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bearing_mount_holes()
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translate([0, 0, -height + bearing_clamp_tab_height]) {
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if(nutty)
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nut(nut, true);
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else
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nut_and_washer(nut, true);
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translate([0,0, -bearing_clamp_tab_height - sheet_thickness(Y_carriage)])
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rotate([180, 0, 0])
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screw_and_washer(cap_screw, 16);
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}
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}
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module y_bearing_mount_stl() translate([0,0, Y_bearing_holder_height]) bearing_mount(Y_bearings, Y_bearing_holder_height);
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module y_bearing_mounts_stl()
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{
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y_bearing_mount_stl();
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translate([ bearing_mount_width(Y_bearings) - tab_length + 2, 0, 0]) y_bearing_mount_stl();
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translate([-(bearing_mount_width(Y_bearings) - tab_length + 2), 0, 0]) y_bearing_mount_stl();
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}
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if(0)
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y_bearing_assembly(Y_bearing_holder_height);
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else
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y_bearing_mounts_stl();
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