mirror of
https://github.com/nophead/Mendel90.git
synced 2025-01-17 12:58:16 +01:00
142 lines
4.1 KiB
OpenSCAD
142 lines
4.1 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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// Not actually a part of Mendel90. This allows the Mendle90 x-axis to be used on a Prusa
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//
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include <conf/config.scad>
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use <z-coupling.scad>
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corner_rad = 5;
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clamp_rad = 0;
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end_wall = 2;
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thickness = 4;
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length = ceil(NEMA_width(Z_motor));
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height = 2 * thickness + X_bar_dia;
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bar_y = 58.5 / 2;
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width = 2 * bar_y;
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big_hole = NEMA_big_hole(Z_motor);
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clamp_height = 12;
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clamp_thickness = bar_clamp_band;
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clamp_screw_clearance = 2;
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clamp_length = Z_bar_dia / 2 + bar_clamp_tab - 2 + clamp_rad;
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gap = 1.5;
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clamp_width = Z_bar_dia + 2 * clamp_thickness;
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clamp_x = z_bar_offset() + clamp_length - bar_clamp_tab / 2;
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function z_bar_offset() = round(NEMA_width(Z_motor)) / 2;
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module z_motor_bracket_stl() {
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stl("z_motor_bracket");
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difference() {
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union() {
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//
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// main body
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//
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difference() {
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translate([0, 0, clamp_height / 2])
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cube([length, width, clamp_height], center = true);
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translate([0, 0, clamp_height / 2 + thickness])
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cube([length - 2 * end_wall, width, clamp_height], center = true);
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}
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//
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// Bar holders
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//
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for(side = [-1, 1])
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translate([0, bar_y * side, height / 2]) {
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rotate([90, 0, 90])
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teardrop(r = height / 2, h = length, center = true);
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rotate([-90, 0, 90])
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teardrop(r = height / 2, h = length, center = true);
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}
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//
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// bar clamp
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//
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translate([z_bar_offset() + clamp_length / 2 - eta, 0, clamp_height / 2 + eta])
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cube([clamp_length, clamp_width, clamp_height], center = true);
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translate([z_bar_offset(), 0, clamp_height / 2 + eta])
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cylinder(h = clamp_height, r = Z_bar_dia/2 + clamp_thickness, center = true);
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}
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//
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// Holes for bars
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//
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for(side = [-1, 1])
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translate([0, bar_y * side, height / 2])
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rotate([90, 0, 90])
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teardrop(r = M8_clearance_radius, h = length + 1, center = true, truncate = true);
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//
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// motor holes
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//
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poly_cylinder(r = big_hole, h = thickness * 2 + 1, center = true); // hole for stepper locating boss
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for(x = NEMA_holes(Z_motor)) // motor screw holes
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for(y = NEMA_holes(Z_motor))
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translate([x,y,0])
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poly_cylinder(r = M3_clearance_radius, h = 2 * thickness + 1, center = true);
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//
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// bar clamp
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//
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translate([z_bar_offset() + clamp_length / 2, 0, 0]) // clamp slot
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cube([clamp_length, gap, clamp_height * 2 + 1], center = true);
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translate([clamp_x, Z_bar_dia / 2 + clamp_thickness, clamp_height / 2])
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rotate([90, 0, 0])
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nut_trap(screw_clearance_radius, nut_radius, nut_trap_depth, horizontal = true); // clamp screw
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translate([z_bar_offset(), 0, 0])
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poly_cylinder(r = Z_bar_dia / 2, h = clamp_height * 2 + 1, center = true); // hole for z rod
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}
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}
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module z_motor_assembly() {
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assembly("z-motor-assembly");
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color(z_motor_bracket_color) render() z_motor_bracket_stl();
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//
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// Clamp screw and washer
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//
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translate([clamp_x, -clamp_width / 2, clamp_height / 2])
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rotate([90, 0, 0])
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screw_and_washer(cap_screw, 16);
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//
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// Clamp nyloc
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//
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translate([clamp_x, clamp_width / 2 - nut_trap_depth, clamp_height / 2])
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rotate([-90, 0, 0])
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nut(nut, true);
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//
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// Motor and screws
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//
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NEMA(Z_motor);
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translate([0,0, thickness])
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NEMA_screws(Z_motor);
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//
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// The coupling assembly
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//
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translate([0, 0, NEMA_shaft_length(Z_motor) + 1])
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rotate([0,0,-45])
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z_coupler_assembly();
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end("z-motor-assembly");
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}
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if(1)
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z_motor_bracket_stl();
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else
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z_motor_assembly();
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