Added SFU1610 ballscrew nut

readme.md

@@ -1547,9 +1547,11 @@ Nuts for leadscrews.
 | Function | Description |
 |:--- |:--- |
 | `leadnut_bore(type)` | Thread size |
+| `leadnut_colour(type)` | The colour |
 | `leadnut_flange_dia(type)` | Flange diameter |
 | `leadnut_flange_offset(type)` | Offset of the flange from the top |
 | `leadnut_flange_t(type)` | Flange thickness |
+| `leadnut_flat(type)` | Flat section width |
 | `leadnut_height(type)` | Total height |
 | `leadnut_hole_dia(type)` | The diameter of the screw holes |
 | `leadnut_hole_pitch(type)` | The radial pitch of the screw holes |
@@ -1577,6 +1579,7 @@ Nuts for leadscrews.
 | ---:|:--- |:---|
 |   1 | `leadnut(LSN8x2)` |  Leadscrew nut 8 x 2 |
 |   1 | `leadnut(LSN8x8)` |  Leadscrew nut 8 x 8 RobotDigg |
+|   1 | `leadnut(SFU1610)` |  Leadscrew nut for SFU1610 |
 
 
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vitamins/leadnut.scad

@@ -36,12 +36,17 @@ function leadnut_hole_pitch(type)    = type[10];    //! The radial pitch of the
 function leadnut_screw(type)         = type[11];    //! The type of the fixing screws
 function leadnut_pitch(type)         = type[12];    //! Screw pitch
 function leadnut_lead(type)          = type[13];    //! Screw lead
+function leadnut_flat(type)          = type[14];    //! Flat section width
+function leadnut_colour(type)        = type[15];    //! The colour
 
 function leadnut_shank(type)         = leadnut_height(type) - leadnut_flange_t(type) - leadnut_flange_offset(type); //! The length of the shank below the flange
 
 module leadnut_screw_positions(type) { //! Position children at the screw holes
     holes = leadnut_holes(type);
-    for(i = [0 : holes - 1], a = i * 360 / holes + 180)
+    flat = leadnut_flat(type);
+    angles = flat ? [let(h = holes / 2, a = 90 / (h - 1)) for(i = [0 : h - 1], side = [-1, 1]) side * (45 + i * a)]
+                  : [for(i = [0 : holes - 1]) i * 360 / holes + 180];
+    for(a = angles)
         rotate(a)
             translate([leadnut_hole_pitch(type), 0, leadnut_flange_t(type)])
                 rotate(45)
@@ -55,8 +60,10 @@ module leadnut(type) { //! Draw specified leadnut
     h = leadnut_height(type);
     pitch = leadnut_pitch(type);
     lead = leadnut_lead(type);
+    flat = leadnut_flat(type);
+    flange_d = leadnut_flange_dia(type);
 
-    color("dimgrey") vflip()
+    color(leadnut_colour(type)) vflip()
         translate_z(-leadnut_flange_offset(type) - leadnut_flange_t(type)) {
             tube(or = leadnut_od(type) / 2, ir = bore_r, h = h, center = false);
 
@@ -66,12 +73,17 @@ module leadnut(type) { //! Draw specified leadnut
             translate_z(leadnut_flange_offset(type))
                 linear_extrude(leadnut_flange_t(type))
                     difference() {
-                        circle(d = leadnut_flange_dia(type));
+                        circle(d = flange_d);
 
                         circle(bore_r);
 
                         leadnut_screw_positions(type)
                             circle(d = leadnut_hole_dia(type));
+
+                        if(flat)
+                            for(side = [-1, 1])
+                                translate([side * flange_d / 2, 0])
+                                    square([flange_d - flat, flange_d], center = true);
                     }
         }
 }

vitamins/leadnuts.scad

@@ -16,10 +16,18 @@
 // You should have received a copy of the GNU General Public License along with NopSCADlib.
 // If not, see <https://www.gnu.org/licenses/>.
 //
+//                                                    b   s     h   f     f    f    h  h    h        s             p   l  f  c
+//                                                    o   h     e   l     l    l    o  o    o        c             i   e  l  o
+//                                                    r   a     i   a     a    a    l  l    l        r             t   a  a  l
+//                                                    e   n     g   n     n    n    e  e    e        e             c   d  t  o
+//                                                        k     h   g     g    g    s                w             h         u
+//                                                              t   e     e    e       d    p                                r
+//
+//                                                                  d     t    o
+LSN8x2  = ["LSN8x2",  "Leadscrew nut 8 x 2",           8, 10.2, 15, 22,   3.5, 1.5, 4, 3.5, 8,       M3_cap_screw, 2,  2, 0, "dimgrey"];
+LSN8x8  = ["LSN8x8",  "Leadscrew nut 8 x 8 RobotDigg", 8, 12.75,19, 25.4, 4.1, 0,   3, 3.5, 19.05/2, M3_cap_screw, 2,  8, 0, "dimgrey"];
+SFU1610 = ["SFU1610", "Leadscrew nut for SFU1610",    16, 28, 42.5, 48,    10, 0,   6, 6,   38/2,    M6_cap_screw, 5, 10, 40, "#DFDAC5"];
 
-LSN8x2 = ["LSN8x2", "Leadscrew nut 8 x 2",          8, 10.2, 15, 22,   3.5, 1.5, 4, 3.5, 8,       M3_cap_screw, 2, 2];
-LSN8x8 = ["LSN8x8", "Leadscrew nut 8 x 8 RobotDigg",8, 12.75,19, 25.4, 4.1, 0,   3, 3.5, 19.05/2, M3_cap_screw, 2, 8];
-
-leadnuts = [LSN8x2, LSN8x8];
+leadnuts = [LSN8x2, LSN8x8, SFU1610];
 
 use <leadnut.scad>