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NopSCADlib
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Changed carriage to specify its rail type.

This commit is contained in:
Martin Budden 2021-02-02 12:23:03 +00:00
parent 1c445385b4
commit f760aaa20a
3 changed files with 34 additions and 34 deletions
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7
tests/rails.scad
View File

@ -26,15 +26,16 @@ sheet = 3;
pos = 1; //[-1 : 0.1 : 1]
module rails()
layout([for(l = rails) carriage_width(rail_carriage(l))], 20)
layout([for(l = carriages) carriage_width(l)], 20)
rotate(-90) {
rail = rails[$i];
carriage = carriages[$i];
rail = carriage_rail(carriage);
length = 200;
screw = rail_screw(rail);
nut = screw_nut(screw);
washer = screw_washer(screw);
rail_assembly(rail, length, pos * rail_travel(rail, length) / 2, $i<2 ? grey(20) : "green", $i<2 ? grey(20) : "red");
rail_assembly(carriage, length, pos * carriage_travel(carriage, length) / 2, $i<2 ? grey(20) : "green", $i<2 ? grey(20) : "red");
rail_screws(rail, length, sheet + nut_thickness(nut, true) + washer_thickness(washer));

22
vitamins/rail.scad
View File

@ -31,13 +31,11 @@ function rail_bore(type) = type[5]; //! Counter bore diameter for screw
function rail_hole(type) = type[6]; //! Screw hole diameter
function rail_bore_depth(type) = type[7]; //! Counter bore depth
function rail_screw(type) = type[8]; //! Screw type
function rail_carriage(type) = type[9]; //! Carriage type
function rail_end_screw(type) = type[10]; //! Screw used for ends only (Countersink used for better location)
function rail_groove_offset(type)=type[11]; //! Offset of centre of groove from top of rail
function rail_groove_width(type)=type[12]; //! Groove width
function rail_end_screw(type) = type[9]; //! Screw used for ends only (Countersink used for better location)
function rail_groove_offset(type)=type[10]; //! Offset of centre of groove from top of rail
function rail_groove_width(type)=type[11]; //! Groove width
function rail_screw_height(type, screw) = rail_height(type) - rail_bore_depth(type) + screw_head_depth(screw, rail_hole(type)); //! Position screw taking into account countersink into counterbored hole
function rail_travel(type, length) = length - carriage_length(rail_carriage(type)); //! How far the carriage can travel
function carriage_length(type) = type[0]; //! Overall length
function carriage_block_length(type) = type[1]; //! Length of the metal part
@ -48,7 +46,9 @@ function carriage_clearance(type) = type[4]; //! Gap under the carriage
function carriage_pitch_x(type) = type[5]; //! Screw hole x pitch
function carriage_pitch_y(type) = type[6]; //! Screw hole y pitch
function carriage_screw(type) = type[7]; //! Carriage screw type
function carriage_rail(type) = type[8]; //! Rail type
function carriage_screw_depth(type) = 2 * screw_radius(carriage_screw(type)); //! Carriage thread depth
function carriage_travel(type, rail_length) = rail_length - carriage_length(type); //! How far the carriage can travel on a given length rail
function rail_holes(type, length) = //! Number of holes in a rail given its `length`
floor((length - 2 * rail_end(type)) / rail_pitch(type)) + 1;
@ -73,7 +73,7 @@ module carriage_hole_positions(type) { //! Position children over screw holes
children();
}
module carriage(type, rail, end_colour = grey(20), wiper_colour = grey(20)) { //! Draw the specified carriage
module carriage(type, end_colour = grey(20), wiper_colour = grey(20)) { //! Draw the specified carriage
total_l = carriage_length(type);
block_l = carriage_block_length(type);
block_w = carriage_width(type);
@ -85,9 +85,9 @@ module carriage(type, rail, end_colour = grey(20), wiper_colour = grey(20)) { //
screw_depth = carriage_screw_depth(type);
module cutout() {
w = rail_width(rail) + 0.4;
w = rail_width(carriage_rail(type)) + 0.4;
translate([-w / 2, 0])
square([w , rail_height(rail) + 0.2]);
square([w , rail_height(carriage_rail(type)) + 0.2]);
}
color(grey(90)) {
@ -179,11 +179,11 @@ module rail(type, length, colour = grey(90), use_polycircles = false) { //! Draw
}
}
module rail_assembly(type, length, pos, carriage_end_colour = grey(20), carriage_wiper_colour = grey(20)) { //! Rail and carriage assembly
rail(type, length);
module rail_assembly(carriage, length, pos, carriage_end_colour = grey(20), carriage_wiper_colour = grey(20)) { //! Rail and carriage assembly
rail(carriage_rail(carriage), length);
translate([pos, 0])
carriage(rail_carriage(type), type, carriage_end_colour, carriage_wiper_colour);
carriage(carriage, carriage_end_colour, carriage_wiper_colour);
}
module rail_screws(type, length, thickness, screws = 100, index_screws = undef) { //! Place screws in the rail

39
vitamins/rails.scad
View File

@ -17,30 +17,29 @@
// If not, see <https://www.gnu.org/licenses/>.
//
//
// Rails
//
// Wr Hr E P D d h go gw
MGN5 = [ "MGN5", 5, 3.6, 5, 15, 3.6, 2.4, 0.8, M2_cs_cap_screw, M2_cs_cap_screw, 1, 1 ]; // Screw holes too small for M2 heads
MGN7 = [ "MGN7", 7, 5, 5, 15, 4.3, 2.4, 2.6, M2_cap_screw, M2_cs_cap_screw, 1.5, 1.5 ];
MGN9 = [ "MGN9", 9, 6, 7.5, 20, 6.0, 3.5, 3.5, M3_cap_screw, M3_cs_cap_screw, 1.5, 1.5 ];
MGN12 =[ "MGN12", 12, 8, 10, 25, 6.0, 3.5, 4.5, M3_cap_screw, M3_cs_cap_screw, 2.25, 2.75];
MGN15 =[ "MGN15", 15, 10, 10, 40, 6.0, 3.5, 5.0, M3_cap_screw, M3_cs_cap_screw, 2.5, 2.75 ];
SSR15= [ "SSR15", 15, 12.5, 10, 60, 7.5, 4.5, 5.3, M4_cap_screw, M4_cs_cap_screw, 2.5, 2.75 ];
//
// Carriages
//
// L L1 W H H1 C B
MGN5_carriage = [ 16, 9.6, 12, 6, 1.5, 0, 8 , M2_cap_screw ];
MGN7C_carriage = [ 23, 14.3, 17, 8, 1.5, 8, 12, M2_cap_screw ];
MGN9C_carriage = [ 29.7, 20.8, 20, 10, 2, 10, 15, M3_cap_screw ];
MGN12C_carriage= [ 34.7, 21.7, 27, 13, 3, 15, 20, M3_cap_screw ];
MGN12H_carriage= [ 45.4, 32.4, 27, 13, 3, 20, 20, M3_cap_screw ];
MGN15C_carriage= [ 43.3, 27.7, 32, 16, 4, 20, 25, M3_cap_screw ];
SSR15_carriage = [ 40.3, 23.3, 34, 24, 4.5, 0, 26, M4_cap_screw ];
//
// Rails
//
//
// Wr Hr E P D d h go gw
MGN5 = [ "MGN5", 5, 3.6, 5, 15, 3.6, 2.4, 0.8, M2_cs_cap_screw, MGN5_carriage, M2_cs_cap_screw, 1, 1 ]; // Screw holes too small for M2 heads
MGN7C= [ "MGN7C", 7, 5, 5, 15, 4.3, 2.4, 2.6, M2_cap_screw, MGN7C_carriage, M2_cs_cap_screw, 1.5, 1.5 ];
MGN9C= [ "MGN9C", 9, 6, 7.5, 20, 6.0, 3.5, 3.5, M3_cap_screw, MGN9C_carriage, M3_cs_cap_screw, 1.5, 1.5 ];
MGN12C=[ "MGN12C",12, 8, 10, 25, 6.0, 3.5, 4.5, M3_cap_screw, MGN12C_carriage,M3_cs_cap_screw, 2.25, 2.75 ];
MGN12H=[ "MGN12H",12, 8, 10, 25, 6.0, 3.5, 4.5, M3_cap_screw, MGN12H_carriage,M3_cs_cap_screw, 2.25, 2.75];
MGN15C=[ "MGN15C",15, 10, 10, 40, 6.0, 3.5, 5.0, M3_cap_screw, MGN15C_carriage,M3_cs_cap_screw, 2.5, 2.75 ];
SSR15= [ "SSR15", 15, 12.5,10, 60, 7.5, 4.5, 5.3, M4_cap_screw, SSR15_carriage, M4_cs_cap_screw, 2.5, 2.75 ];
MGN5_carriage = [ 16, 9.6, 12, 6, 1.5, 0, 8, M2_cap_screw, MGN5 ];
MGN7C_carriage = [ 23, 14.3, 17, 8, 1.5, 8, 12, M2_cap_screw, MGN7 ];
MGN9C_carriage = [ 29.7, 20.8, 20, 10, 2, 10, 15, M3_cap_screw, MGN9 ];
MGN12C_carriage = [ 34.7, 21.7, 27, 13, 3, 15, 20, M3_cap_screw, MGN12 ];
MGN12H_carriage = [ 45.4, 32.4, 27, 13, 3, 20, 20, M3_cap_screw, MGN12 ];
MGN15C_carriage = [ 43.3, 27.7, 32, 16, 4, 20, 25, M3_cap_screw, MGN15 ];
SSR15_carriage = [ 40.3, 23.3, 34, 24, 4.5, 0, 26, M4_cap_screw, SSR15 ];
rails = [MGN5, MGN7C, MGN9C, MGN12C, MGN12H, MGN15C, SSR15];
carriages = [MGN5_carriage, MGN7C_carriage, MGN9C_carriage, MGN12C_carriage, MGN12H_carriage, MGN15C_carriage, SSR15_carriage];
use <rail.scad>