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Chris Palmer
2012-03-12 01:13:07 +00:00
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//
// Mendel90
//
// GNU GPL v2
// nop.head@gmail.com
// hydraraptor.blogspot.com
//
// Configuration file
//
bom = 2; // 0 no bom, 1 assemblies and stls, 2 vitamins as well
exploded = false; // true for exploded view
eta = 0.01; // small fudge factor to stop CSG barfing on coincident faces.
$fa = 5;
$fs = 0.5;
//
// Hole sizes
//
No2_pilot_radius = 1.7 / 2; // self tapper into ABS
No4_pilot_radius = 2.0 / 2; // wood screw into soft wood
No6_pilot_radius = 2.0 / 2; // wood screw into soft wood
No2_clearance_radius = 2.5 / 2;
No4_clearance_radius = 3.5 / 2;
No6_clearance_radius = 4.0 / 2;
M2p5_tap_radius = 2.05 / 2;
M2p5_clearance_radius= 2.8 / 2; // M2.5
M3_tap_radius = 2.5 / 2;
M3_clearance_radius = 3.3 / 2;
M3_nut_radius = 6.5 / 2;
M3_nut_trap_depth = 3;
M4_tap_radius = 3.3 / 2;
M4_clearance_radius = 2.2;
M4_nut_radius = 8.2 / 2;
M4_nut_trap_depth = 4.5;
M6_tap_radius = 5 / 2;
M6_clearance_radius = 6.4 / 2;
M6_nut_radius = 11.6 / 2;
M6_nut_depth = 5;
M8_tap_radius = 6.75 / 2;
M8_clearance_radius = 8.4 / 2;
M8_nut_radius = 15.4 / 2;
M8_nut_depth = 6.5;
layer_height = 0.4;
filament_width = layer_height * 1.5;
min_wall = 2 * filament_width + eta;
pcb_thickness = 1.6;
include <utils.scad>
include <vitamins.scad>
endstop_wires = [2, 1.4, "A"]; // 7 strands of 0.2
motor_wires = [4, 1.4, "B"];
bed_wires = [2, 2.8, "C"]; // 13A mains cable
fan_motor_wires = [6, 1.4, "D"]; // fan and motor wires along top of gantry
thermistor_wires = endstop_wires;
endstop_wires_hole_radius = wire_hole_radius(endstop_wires);
motor_wires_hole_radius = wire_hole_radius(motor_wires);
fan_motor_wires_hole_radius = wire_hole_radius(fan_motor_wires);
bed_wires_hole_radius = wire_hole_radius(bed_wires);
thermistor_wires_hole_radius = wire_hole_radius(thermistor_wires);
include <machine.scad> // this file is generated from the command line parameter to include one of the machine configs
screw_clearance_radius = screw_clearance_radius(cap_screw);
nut = screw_nut(cap_screw);
nut_radius = nut_radius(nut);
nut_trap_depth = nut_trap_depth(nut);
washer = screw_washer(cap_screw);
bearing_clamp_tab = washer_diameter(washer) + 2; // how much the lugs stick out and their width
bearing_clamp_tab_height = 4; // thickness of the lugs
hole_edge_clearance = 5; // how close a hole can be to the edge of a sheet
base_clearance = 2; // how close we get to the edge of the base
axis_endstop_clearance = 2; // how close we get to the end of an axis
X_carriage_clearance = 2; // how close the X carriage is to the XZ plane
// how close the Y carriage is to the window in the XZ plane
Y_carriage_clearance = 2 + bulldog_handle_length(small_bulldog) - (Y_carriage_width - bed_width) / 2;
Z_clearance = 10; // How close the top of the object gets to the gantry
belt_clearance = 0.2; // clearance of belt clamp slots
pulley_inner_radius = (14.4 / 2) - belt_thickness(T5x6); // measured from outer diameter
X_bar_dia = X_bearings[2]; // rod sizes to match the bearings
Y_bar_dia = Y_bearings[2];
Z_bar_dia = Z_bearings[2];
Y_idler_bearing = BB624;
X_idler_bearing = BB624;
extruder_ways = 4 + 4 + 2 + 1 + 1; // motor + heater(x2) + thermistor + probe + fan = 12
x_end_ways = extruder_ways + 4 + 2 + 2; // motor plus limit switch and two guards = 20
bed_ways = 20 + 2; // ten each way for the current plus a thermistor
function z_bar_offset() = round(NEMA_width(Z_motor)) / 2;
base_screw = sheet_is_soft(base) ? frame_soft_screw : frame_thick_screw;
base_screw_length = screw_shorter_than(sheet_thickness(base) + 5 + 2 * washer_thickness(screw_washer(base_screw)));
base_clip_screw = base_screw;
base_clip_screw_length = base_screw_length;
frame_screw = sheet_is_soft(frame) ? frame_soft_screw : frame_nuts ? frame_thin_screw : frame_thick_screw;
frame_clip_screw = frame_screw;
frame_screw_length = frame_nuts ? screw_longer_than(sheet_thickness(frame) + 5 + 2 * washer_thickness(screw_washer(frame_screw)) +
nut_thickness(screw_nut(frame_screw), true))
: screw_shorter_than(sheet_thickness(frame) + 5 + 2 * washer_thickness(screw_washer(frame_screw)));
frame_clip_screw_length = frame_screw_length;
echo("base screw length", base_screw_length);
echo("frame screw length",frame_screw_length);
module frame_screw(thickness) {
screw_and_washer(frame_screw, frame_screw_length, !frame_nuts);
if(frame_nuts)
translate([0, 0, -sheet_thickness(frame) - thickness])
rotate([180, 0, 0])
nut_and_washer(screw_nut(frame_screw), true);
}
module frame_screw_hole() {
cylinder(r = frame_nuts ? screw_clearance_radius(frame_screw) :
screw_pilot_hole(frame_screw), h = 100, center = true);
}
module base_screw() {
screw_and_washer(base_screw, base_screw_length, true);
}
module base_screw_hole() {
cylinder(r = screw_pilot_hole(base_screw), h = 100, center = true);
}
bar_clamp_depth = 4 + washer_diameter(screw_washer(base_screw)); // how thick the bar clamps are
bar_clamp_tab = 3 + washer_diameter(screw_washer(base_screw)); // how much the lugs stick out
bar_clamp_band = 3; // the thickness of the strap that clamps the bar.