box_frame/extras/tube_clamp.scad

   1 //makes tube clamping part. Useful for strenghtening Z axis tubing or as holder for Z axis endstop.
   2 // GNU GPL v3
   3 // Václav 'ax' Hůla <axtheb@gmail.com>
   4 include <../configuration.scad>;
   5 $fn=64;
   6
   7 module tube_clamp(tube_r, wall_width=3, endstop=false) {
   8     //wall_width is in single_wall_widths
   9     difference() {
  10         union(){
  11         intersection() {
  12             union(){
  13                 cylinder(r=tube_r + wall_width * single_wall_width, h=10);
  14                 translate([-4.5, 0, 0]) cube([9, 20, 10]);
  15             }
  16             cylinder(r=tube_r + 5 + wall_width * single_wall_width, h=10);
  17         }
  18             if (endstop) {
  19                 translate([-4.5, 5 + tube_r, 0]) cube([4.5, 30, 10]);
  20             }
  21         }
  22         translate([0, 0, -0.5]) cylinder(r=tube_r, h=11);
  23         translate([-0.5, 0, -0.5]) cube([1, 45, 11]);
  24
  25         translate([-7, max (6, tube_r + wall_width * single_wall_width + 0.5) , 5]) {
  26             rotate([0, 90, 0]) screw(r=1.7, r_head=m3_washer_diameter/2, head_drop=3, slant=false);
  27             translate([10, 0, 0]) rotate([0, 90, 0]) cylinder(r=m3_nut_diameter_horizontal/2, $fn=6, h=2);
  28         }
  29         if (endstop) {
  30             translate([-7, 10 + tube_r, 5]) rotate([0, 90, 0]) {
  31                 cylinder(r = 1.2, h=10);
  32                 translate([0, 10, 0])
  33                 cylinder(r = 1.2, h=10);
  34                 translate([0, 20, 0])
  35                 cylinder(r = 1.2, h=10);
  36             }
  37         }
  38
  39     }
  40 }
  41
  42 tube_clamp(3.5);
  43 translate([15, 0, 0]) tube_clamp(3.5);
  44 translate([0, 20, 0]) {
  45     tube_clamp(bushing_xy[0], endstop=true);
  46     translate([20, 0, 0]) tube_clamp(bushing_xy[0], endstop=true);
  47     translate([-20, 0, 0]) tube_clamp(bushing_z[0], endstop=true);
  48 }