149 lines
No EOL
4.3 KiB
OpenSCAD
149 lines
No EOL
4.3 KiB
OpenSCAD
include <BOSL2/std.scad>
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include <BOSL2/screws.scad>
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// To jest model celownika do karabinu CZ Varmint
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// Koncepcyjnie składa się z 3 części - na górze jest szyna
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// Picattiny (rail), na środku jest obejma lufy (clamp), i na dole
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// wystaje pałąk do przykręcenia (post)
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// parameters
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length = 9; // ustaw poniżej 5 do testów wymiarów
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clamp_inner = 22.075;
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clamp_inner_acurracy = 90;
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clamp_thickness = 2;
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c_s = length>5 ? 1 : 0.4; // chamfer_size używane tylko do testów
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rail_height = -9.4 + clamp_inner/2 + 6.8; // -9.4 is to center the picatinny
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post_thickness=7;
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post_length=9;
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post_slit=1;
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post_chamfer = 1.665;
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nut_wall_t = -1.5;
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screw = "M2.5";
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info = screw_info(name=screw, head="socket");
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hh = struct_val(info, "head_height");
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screw_head_h = post_thickness - hh - nut_wall_t;
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$slop = 0.1;
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top_screw = 3.9;
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top_h = 5;
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top_w = 6;
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top_lock_hole_distance = 4;
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top_lock_hole_d = 1.8;
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quality = 1;
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$fn=36*quality;
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difference() {
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// celownik
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union() {
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// obejma wokół lufy
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cyl_size = clamp_inner/2 + clamp_thickness;
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cyl(h=length, r=cyl_size, rounding=1*c_s);
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// na dole wystający trzpień do przykręcenia
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translate([(clamp_inner + post_length)/2, 0, 0])
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cuboid([post_length, post_thickness, length], rounding=c_s);
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// top front sights
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yrot(-90) up((clamp_inner + top_h)/2) union() {
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cuboid([length,top_w,top_h], rounding=2, edges=TOP);
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}
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}
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// lufa, śruby oraz przecięcie
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union() {
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// lufa karabinu
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cyl(h=length+0.2, r=clamp_inner/2, $fn=clamp_inner_acurracy, rounding=-c_s);
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// przecięcie
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translate([(clamp_inner+post_length)/2 - 0.1,0,0])
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cuboid([post_length + 0.25,post_slit,length+0.2], rounding=-1);
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// miejsce na śrubę
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if (length > 5){
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tab = length>12?[length*-1/4, length*1/4]:[0];
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for (i = tab) {
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translate([(clamp_inner + post_length)/2,0,i])
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rotate([90,90,0])
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screw_hole(spec=screw, length=screw_head_h, head="socket", thread=0, $fn=120);
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translate([(clamp_inner + post_length)/2,post_thickness/2 - nut_wall_t,i])
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rotate([90,90,0])
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nut_trap_inline(spec=screw, h=hh);
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}
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}
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// chamfer for slit
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translate([clamp_inner/2 - post_slit/4,0,0]) rotate([0,0,45])
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cuboid([post_slit*post_chamfer,post_slit*post_chamfer,length+2]);
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// top front sights
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yrot(-90) up((clamp_inner + top_h)/2 - 0.2) union() {
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if(length>12) {
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left(top_lock_hole_distance/2) cyl(h=top_h + 1, d=top_lock_hole_d, $fn=12*quality);
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right(top_lock_hole_distance/2) cyl(d=top_screw, length=top_h + 1, $fn=12*quality);
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} else {
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cyl(d=top_screw, length=top_h + 1, $fn=12*quality);
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}
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}
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// debug - wyświetl rozmiar
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if(length < 5) {
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translate([clamp_inner/2 + 2 ,post_thickness/6,length-0.5])
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linear_extrude(5) text(str(clamp_inner), 3);
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}
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}
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}
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// rear sight
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r_clamp_width = 20;
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r_clamp_th = 3.4;
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r_clamp_t = 1.5;
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r_clamp_l = 16;
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r_clamp_h = 10;
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r_clamp_w = r_clamp_th + 2*r_clamp_t;
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r_clamp_hole_pos = 2.8;
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r_clamp_hole_d = 4.7;
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r_sight_pos = 12;
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r_sight_pos_h = 0.5;
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r_sight_screw_d1 = 3.7;
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r_sight_screw_d2 = 5.4;
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r_sight_screw_head_d = 9.5;
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back(50) union() {
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// slits to hold onto optic mount
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difference() {
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union() {
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left(r_clamp_width/2) cuboid([r_clamp_w,r_clamp_l,r_clamp_h]);
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right(r_clamp_width/2) cuboid([r_clamp_w, r_clamp_l, r_clamp_h]);
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}
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union() {
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left(r_clamp_width/2) fwd(r_clamp_t*2)
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cuboid([r_clamp_th, r_clamp_l, r_clamp_h+1]);
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right(r_clamp_width/2) fwd(r_clamp_t*2)
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cuboid([r_clamp_th, r_clamp_l, r_clamp_h+1]);
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fwd(r_clamp_hole_pos) yrot(90) cyl(d=r_clamp_hole_d, h=100, $fn=36*quality);
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// hole for screw head for peepsight screw
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back(r_sight_pos) down(r_sight_pos_h) yrot(90) fwd(1) up(-50)
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cyl(d=r_sight_screw_head_d, h=100, $fn=36*quality);
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}
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}
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// rear part for sight
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back(r_sight_pos) down(r_sight_pos_h) difference() {
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down(r_sight_pos_h) cuboid([20,12,8]);
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down(r_sight_pos_h) cuboid([15, 12.1, 8.1]);
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yrot(90) fwd(1) up(50) cyl(d=r_sight_screw_d1, h=100, $fn=12*quality);
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yrot(90) fwd(1) up(-50) cyl(d=r_sight_screw_d2, h=100, $fn=12*quality);
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}
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back(16.5) down(-1.5) cuboid([20,3,3]);
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back(16.5) down(4) cuboid([20,3,2]);
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} |