djsundog
/
NopSCADlib
mirror of https://github.com/DJSundog/NopSCADlib.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Fixed bug in rail screw placement when putting screws in the middle. 

Rail test can now move the carriages with customiser.
This commit is contained in:
Chris Palmer 2020-11-26 14:24:46 +00:00
parent c5b35daeac
commit ceac5cdb27
2 changed files with 6 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
tests/rails.scad
View File

@ -23,6 +23,7 @@ use <../utils/layout.scad>
use <../vitamins/nut.scad>
sheet = 3;
pos = 1; //[-1 : 0.1 : 1]
module rails()
layout([for(l = rails) carriage_width(rail_carriage(l))], 20)
@ -33,7 +34,7 @@ module rails()
nut = screw_nut(screw);
washer = screw_washer(screw);
rail_assembly(rail, length, rail_travel(rail, length) / 2, $i<2 ? grey(20) : "green", $i<2 ? grey(20) : "red");
rail_assembly(rail, length, pos * rail_travel(rail, length) / 2, $i<2 ? grey(20) : "green", $i<2 ? grey(20) : "red");
rail_screws(rail, length, sheet + nut_thickness(nut, true) + washer_thickness(washer));

8
vitamins/rail.scad
View File

@ -52,8 +52,9 @@ function rail_holes(type, length) = //! Number of holes in a rail given its ```l
module rail_hole_positions(type, length, first = 0, screws = 100, both_ends = true) { //! Position children over screw holes
pitch = rail_pitch(type);
holes = rail_holes(type, length);
for(i = [first : holes - 1 - first])
if(i < screws || (holes - i <= screws && both_ends))
last = first + screws;
for(i = [first : holes - 1], j = holes - 1 - i)
if(i < last || both_ends && (j >= first && j < last))
translate([i * pitch - length / 2 + (length - (holes - 1) * pitch) / 2, 0])
children();
}
@ -177,7 +178,6 @@ module rail_assembly(type, length, pos, carriage_end_colour = grey(20), carriage
translate([pos, 0])
carriage(rail_carriage(type), type, carriage_end_colour, carriage_wiper_colour);
}
module rail_screws(type, length, thickness, screws = 100) { //! Place screws in the rail
@ -193,6 +193,6 @@ module rail_screws(type, length, thickness, screws = 100) { //! Place screws in
screw(end_screw, end_screw_len);
translate_z(rail_screw_height(type, screw))
rail_hole_positions(type, length, index_screws, screws)
rail_hole_positions(type, length, index_screws, min(screws, rail_holes(type, length)) - 2 * index_screws)
screw(screw, screw_len);
}