212 lines
7.5 KiB
OpenSCAD
212 lines
7.5 KiB
OpenSCAD
// Cyclone PCB Factory: a 3D printable CNC machine for PCB manufacture
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// Created by Carlosgs (http://carlosgs.es)
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// License: Attribution - Share Alike - Creative Commons (http://creativecommons.org/licenses/by-sa/3.0/)
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use <../libs/obiscad/bcube.scad>
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use <../libs/obiscad/bevel.scad>
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use <../libs/build_plate.scad>
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module frame(with_motor = 1, show_printbed = 0) {
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layer_thickness = 0.4;
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motor_width = 43+1;
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motor_length = 49; // not used
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motor_screw_distance = 31.3;
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motor_center_diameter = 23;
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motor_screw_diameter = 4;
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motor_screw_head_diameter = 8;
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motor_stand_thickness = 5;
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bearing_diameter = 22.4;
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M8_rod_diam = 8.2;
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X_smooth_rods_sep = 50;
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X_smooth_rods_sep_projected = sqrt((X_smooth_rods_sep*X_smooth_rods_sep)/2); // Be careful with this measure, it is not properly named since it is used with the following offset:
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smooth_rod_margin = 1;
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smooth_rod_screw_sep = 8;
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smooth_rod_screw_diam = 3;
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smooth_rod_screw_len = 7;
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X_rods_corner_shaft_size = X_smooth_rods_sep*0.65;
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frame_thickness = 10;
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frame_width = 90;
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frame_height = 135;
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frame_corner_radius = 5;
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X_threaded_rod_posX = X_smooth_rods_sep_projected;
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X_threaded_rod_posY = X_smooth_rods_sep_projected;
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motor_axis_distance = 32;
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motor_axis_angle = 15;
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X_motor_gear_margin = 35;
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frame_hole_height = 80;
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bottom_thickness = 5;
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wall_thickness = 5;
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base_screw_diameter = 5;
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base_screw_distance = 33;
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Y_rod_height = 40;
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Y_rod_dist_from_wall = 15;
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Y_rod_support_lenght = Y_rod_dist_from_wall+smooth_rod_screw_sep+smooth_rod_screw_diam;
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if(show_printbed) {
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//for display only, doesn't contribute to final object
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translate([frame_width/2,frame_height/2,0]) build_plate(3,110,140);
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}
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union() {
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difference() {
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// --------- Main frame --------- //
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translate([frame_width/2,frame_height/2,frame_thickness/2])
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cube([frame_width,frame_height,frame_thickness],center=true);
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// --------- Smooth Y rods --------- //
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translate([X_smooth_rods_sep_projected,-smooth_rod_margin,0]) {
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cylinder(r=M8_rod_diam/2,h=10*frame_thickness,center=true,$fn=40);
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// Screws
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rotate([90,0,0]) translate([0,frame_thickness/2,0]) {
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translate([-smooth_rod_screw_sep,0,0])
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cylinder(r=smooth_rod_screw_diam/2,h=2*smooth_rod_screw_len,center=true,$fn=6);
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translate([smooth_rod_screw_sep,0,0])
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cylinder(r=smooth_rod_screw_diam/2,h=2*smooth_rod_screw_len,center=true,$fn=6);
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}
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}
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translate([-smooth_rod_margin,X_smooth_rods_sep_projected,0]) {
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cylinder(r=M8_rod_diam/2,h=10*frame_thickness,center=true,$fn=40);
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// Screws
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rotate([0,90,0]) translate([-frame_thickness/2,0,0]) {
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translate([0,-smooth_rod_screw_sep,0])
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cylinder(r=smooth_rod_screw_diam/2,h=2*smooth_rod_screw_len,center=true,$fn=6);
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translate([0,smooth_rod_screw_sep,0])
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cylinder(r=smooth_rod_screw_diam/2,h=2*smooth_rod_screw_len,center=true,$fn=6);
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}
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}
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// --------- Holes to save plastic --------- //
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// Corner shaft
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rotate([0,0,45])
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cube([X_rods_corner_shaft_size,X_rods_corner_shaft_size,frame_thickness*3],center=true);
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// Hole next to the corner shaft
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rotate([0,0,45]) translate([28,0,0])
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bcube([15,25,frame_thickness*3],cr=2,cres=10);
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// Hole to remove the motor part
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if(with_motor==0)
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translate([frame_width,0,0])
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bcube([frame_width-10,frame_hole_height+bottom_thickness,frame_thickness*3],cr=2,cres=10);
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// --------- Large hole in the frame --------- //
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translate([(frame_width-wall_thickness)/2,frame_height-frame_hole_height/2-bottom_thickness,0])
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bcube([frame_width-wall_thickness-frame_thickness,frame_hole_height,frame_thickness*3],cr=2,cres=10);
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// --------- Screws in the base --------- //
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rotate([90,0,0]) translate([frame_width/2,frame_thickness/2,-frame_height]) {
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translate([-base_screw_distance,0,0])
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cylinder(r=base_screw_diameter/2,h=2*smooth_rod_screw_len,center=true,$fn=6);
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translate([base_screw_distance*0.8,0,0])
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cylinder(r=base_screw_diameter/2,h=2*smooth_rod_screw_len,center=true,$fn=6);
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translate([base_screw_distance*0.2,0,0])
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cylinder(r=base_screw_diameter/2,h=2*smooth_rod_screw_len,center=true,$fn=6);
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}
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// --------- X motor assembly, position relative to X threaded rod --------- //
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translate([X_threaded_rod_posX,X_threaded_rod_posY,0]) {
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// Threaded Y rod hole
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translate([0,0,(motor_stand_thickness/2)+layer_thickness])
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cylinder(r=(M8_rod_diam*2)/2,h=10*frame_thickness,center=false,$fn=40);
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// Threaded X rod bearing hole
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translate([0,0,0])
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cylinder(r=bearing_diameter/2,h=motor_stand_thickness,center=true,$fn=40);
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if(with_motor) {
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// Center is the motor shaft, and we apply the rotation keeping the motor horizontal
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// Screws for holding the motor
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rotate([0,0,-motor_axis_angle]) translate([motor_axis_distance,0,0]) rotate([0,0,motor_axis_angle]) {
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for(i=[-1,1])
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for(j=[-1,1]) {
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translate([i*motor_screw_distance/2,j*motor_screw_distance/2,0]) {
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// Screw hole
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translate([0,0,motor_stand_thickness/2])
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cylinder(r=motor_screw_diameter/2,h=10*frame_thickness,center=true,$fn=40);
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}
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}
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// Hole for the motor shaft
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translate([frame_width/2,0,0])
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cube([frame_width,20,10*motor_stand_thickness],cr=4,cres=10,center=true);
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cylinder(r=motor_center_diameter/2,h=10*motor_stand_thickness,center=true,$fn=40);
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// Level the motor area
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translate([0,0,motor_stand_thickness*2])
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bcube([motor_width,motor_width,frame_thickness],cr=5,cres=10);
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} // End of centering over motor shaft
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} // End of if(with_motor)
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} // End of centering over X threaded rod
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} // End of difference() command
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// --------- Support column for the triangular structure --------- //
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translate([frame_width/4,frame_height-frame_hole_height/2-bottom_thickness,frame_thickness/2])
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rotate([0,0,-23])
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cube([wall_thickness,sqrt((frame_width*frame_width)/4+(frame_hole_height*frame_hole_height)),frame_thickness],center=true);
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// --------- Bevel base supports --------- //
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translate([wall_thickness/2,frame_height,frame_thickness-0.5])
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rotate([90,0,-90])
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bconcave_corner(cr=Y_rod_support_lenght-0.5, cres=0, l=wall_thickness, th=0.5, ext_corner=true);
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translate([frame_width-frame_thickness/2,frame_height,frame_thickness-0.5])
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rotate([90,0,-90])
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bconcave_corner(cr=Y_rod_support_lenght-0.5, cres=0, l=frame_thickness, th=0.5, ext_corner=true);
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// Long bevel
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translate([frame_width/2,frame_height,frame_thickness-0.5])
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rotate([90,0,-90])
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bconcave_corner(cr=wall_thickness-0.5, cres=0, l=frame_width, th=0.5, ext_corner=true);
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// --------- Bevel Y rod support --------- //
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translate([frame_width-frame_thickness/2,frame_height,frame_thickness-2])
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translate([0,-Y_rod_height+smooth_rod_margin,0]) {
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difference() {
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rotate([90,0,90]) // Bevel
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bconcave_corner(cr=Y_rod_support_lenght-smooth_rod_screw_len, cres=0, l=frame_thickness, th=smooth_rod_screw_len, ext_corner=true);
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translate([0,-smooth_rod_margin,Y_rod_dist_from_wall]) rotate([0,90,0]) {
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cylinder(r=M8_rod_diam/2,h=10*frame_thickness,center=true,$fn=40);
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// Screws
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rotate([90,0,0]) {
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translate([-smooth_rod_screw_sep,0,-1])
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cylinder(r=smooth_rod_screw_diam/2,h=2*smooth_rod_screw_len,center=true,$fn=6);
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translate([smooth_rod_screw_sep,0,-1])
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cylinder(r=smooth_rod_screw_diam/2,h=2*smooth_rod_screw_len,center=true,$fn=6);
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}
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}
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}
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}
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} // End of union() command
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}
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// Toggle parameters and mirror to create the other side part
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frame(with_motor = 1, show_printbed = 1);
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//scale([-1,1,1]) frame(with_motor = 0, show_printbed = 1);
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