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NopSCADlib
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Updates as per code review.

This commit is contained in:
Martin Budden 2020-02-23 21:41:47 +00:00
parent b07a8ad245
commit e9ee88dfe9
2 changed files with 36 additions and 24 deletions
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6
tests/scs_bearing_blocks.scad
View File

@ -23,13 +23,15 @@ include <../vitamins/scs_bearing_blocks.scad>
module scs_bearing_blocks()
layout([for(s = scs_bearing_blocks) 2 * scs_size(s)[0]]) {
scs_bearing_block_assembly(scs_bearing_blocks[$i]);
sheet_thickness = 5;
scs_bearing_block_assembly(scs_bearing_blocks[$i], sheet_thickness);
if($i > 0) // skip $i==0, since no SCS6LUU long variant to match SCS6UU
translate([0, 60])
scs_bearing_block_assembly(scs_bearing_blocks_long[$i - 1]);
scs_bearing_block_assembly(scs_bearing_blocks_long[$i - 1], sheet_thickness);
}
if($preview)
let($show_threads = true)
scs_bearing_blocks();

46
vitamins/scs_bearing_block.scad
View File

@ -23,8 +23,10 @@
include <NopSCADlib/core.scad>
include <NopSCADlib/vitamins/screws.scad>
include <NopSCADlib/vitamins/linear_bearings.scad>
use <NopSCADlib/vitamins/screw.scad>
use <NopSCADlib/vitamins/nut.scad>
use <NopSCADlib/vitamins/washer.scad>
use <NopSCADlib/vitamins/linear_bearing.scad>
function scs_size(type) = [type[4],type[6],type[5]]; //! Size of scs bracket bounding block
function scs_hole_offset(type) = type[2]; //! Offset of bearing hole from base of block
@ -119,28 +121,36 @@ module scs_bearing_block(type) { //! Draw the specified SCS bearing block
linear_bearing(scs_bearing(type));
}
module scs_bearing_block_assembly(type, screw_length, screw_type) { //! Assembly with screws and nuts in place
scs_bearing_block(type);
module scs_bearing_block_hole_positions(type) {
screw_separation_x = scs_screw_separation_x(type);
screw_separation_z = scs_screw_separation_z(type);
G = scs_block_side_height(type);
h = scs_hole_offset(type);
screw_type = screw_type ? screw_type : scs_screw(type);
screw_length = screw_length ? screw_length : screw_longer_than(G + 10);
washer_type = screw_washer(screw_type);
washer_thickness = washer_thickness(washer_type);
screw_separation_x = scs_screw_separation_x(type);
screw_separation_z = scs_screw_separation_z(type);
for(x = [-screw_separation_x, screw_separation_x], z = [-screw_separation_z, screw_separation_z])
translate([x / 2, G - h, z / 2])
rotate([-90, 0, 0]) {
rotate([-90, 0, 0])
children();
}
module scs_bearing_block_assembly(type, sheet_thickness, screw_type, nut_type) { //! Assembly with screws and nuts in place
scs_bearing_block(type);
screw_type = is_undef(screw_type) ? scs_screw(type) : screw_type;
nut_type = is_undef(nut_type) ? screw_nut(screw_type) : nut_type;
washer_type = nut_washer(nut_type);
washer_thickness = washer_type ? washer_thickness(washer_type) : 0;
G = scs_block_side_height(type);
nut_offset = G + sheet_thickness + nut_thickness(nut_type) + washer_thickness;
screw_length = screw_longer_than(nut_offset);
scs_bearing_block_hole_positions(type) {
screw(screw_type, screw_length);
translate_z(-screw_length + washer_thickness)
nut(screw_nut(screw_type))
translate_z(-nut_offset)
nut(nut_type)
if (washer_type)
washer(washer_type);
}
}