x-end: add mock up of motor pulley

No teeth, just a primitive representation of the pulley selected in
the config.

diff --git a/box_frame/x-end-motor.scad b/box_frame/x-end-motor.scad
index 0b8d8e6..e897022 100644 (file)
--- a/box_frame/x-end-motor.scad
+++ b/box_frame/x-end-motor.scad
@@ -144,6 +144,22 @@ module x_end_motor_holes(){
      }
 }
 
+module x_end_motor_pulley () {
+     // todo: y alignment uses magic expression "x_base_outside() + 44/2 + motor_y_offset" copies from motor mount translate
+     // todo: x alignment uses magic expression "(x_box_width-10)/2"
+     //       to move past back wall of x-end, will need to be
+     //       adjusted if slot width is made to dynamically adjust or
+     //       is changed in size
+     translate ([x_base_back() + motor_pulley[1]/2 + (x_box_width-10)/2, x_base_outside() + 44/2 + motor_y_offset, x_motor_shaft_z ()]) {
+         rotate ([0, 90, 0]) {
+              difference () {
+                   cylinder (d=motor_pulley[0], h=motor_pulley[1], center=true);
+              translate ([0, 0, -0.01]) cylinder (d=motor_pulley[2], h=motor_pulley[1]+0.03, center=true);
+              }
+         }
+     }
+}
+
 // Final part
 module x_end_motor(){
  difference(){
@@ -152,6 +168,7 @@ module x_end_motor(){
  }
  // strain relief (zip tie point) below the motor
  x_end_motor_sr();
+ %x_end_motor_pulley();
 }
 
 //rotate([0,0,180])