chiark / gitweb /
nook-case: tooth rounded
[reprap-play.git] / nook-case.scad
1 // -*- C -*-
2
3 include <utils.scad>
4
5 nook_th = 12.41 + 0.50;
6 nook_w = 127.12 + 0.75;
7 nook_h = 123.44 + 21.88 + 21.05 + 0.75;
8
9 nook_cnr_rad = 10;
10
11 case_th = 2.5;
12 ledge_w = 4;
13 tape_th = 1.75;
14 tape_inside = 2.0;
15
16 gap = 0.5 * [1,1];
17
18 tape_w = 15;
19
20 test_pillar = 4;
21
22 engage_l0 = 10;
23 engage_l1 = 10;
24 engage_l2 = 3;
25
26 tooth_inward = gap[0] * 1.0;
27 tooth_x = nook_w * 1/6;
28 tooth_w = 15;
29
30 $test = false;
31
32 // calculated
33
34 tooth_height = nook_th;
35 ledge_h = case_th;
36 lid_th = case_th;
37 tooth_th = case_th;
38
39 spp0 = [0,0];
40 spp1 = spp0 + case_th * [-1,0];
41 spp9 = spp0 + ledge_h * [0,-1];
42 spp8 = spp9 + nook_th * [0,-1];
43 spp7 = spp8 + case_th * [-1,-1];
44
45 spp11y = spp1[1] - tape_th;
46 spp4y  = 0.5 * (spp0[1] + spp7[1]);
47 spp3y = spp4y + tape_inside/2;  spp5y = spp4y - tape_inside/2;
48 spp2y = spp3y + tape_th;        spp6y = spp5y - tape_th;
49
50 spp20 = spp8 + nook_cnr_rad * [1,0];
51 spp20x = spp20[0];
52
53 tppA = spp0 + gap;
54 tppB = spp1 + [0, gap[1]];
55 tppC = tppB + lid_th * [0,1];
56 tppD = [ spp20x, tppC[1] ];
57 tppE = [ spp20x, tppB[1] ];
58 tppF = tppA + ledge_w * [1,0];
59 tppG = tppF + ledge_h * [0,-1];
60 tppH = [ tppA[0], tppG[1] ];
61
62 tppJx = tppA[0] + tape_th;
63
64 tppK = [ tppC[0], tppG[1] ];
65 spp31 = tppK - [0, gap[1]];
66 spp30 = [ spp8[0], spp31[1] ];
67
68 nom_cnr = 0.5 * [nook_w, nook_h, 0] - nook_cnr_rad * [1,1,0];
69
70 etxa = nom_cnr[0] - engage_l2;
71 etxb = etxa - engage_l1;
72 etxc = -(nom_cnr[0] - engage_l2);
73
74 tppS = tppB + [-gap[0], 0];
75 tppP = [ tppS[0] - tooth_th, tppC[1] ];
76 tppQ = tppP + tooth_height * [0,-1] + tooth_inward * [1,0];
77 tppR = [ tppS[0] + tooth_inward, tppQ[1] ];
78 tppM = (tppQ + tppR) * 0.5 + tooth_th * 0.5 * [0,1];
79
80 module RightSideMainProfile() {
81   rectfromto(spp7, spp0);
82   rectfromto(spp7, spp20);
83 }
84
85 module LeftSideMainProfile() {
86   rectfromto(spp7, spp30);
87   rectfromto(spp7, spp20);
88 }
89
90 module TopTapeCutout() {
91   polygon([ tppA,
92             tppA + [-40, 0],
93             tppG + [-40,-1],
94             [ tppJx, tppH[1]-1 ],
95             [ tppJx, tppC[1]+1 ],
96             [ tppA[0], tppC[1]+1 ]]);
97 }
98
99 module RightTopMainProfile() {
100   l = [ tppA, tppB, tppC, tppD, tppE, tppF, tppG, tppH ];
101   polygon(l);
102 }
103
104 module LeftTopMainProfile() {
105   l = [ tppC, tppD, tppE, tppF, tppG, tppK ];
106   polygon(l);
107 }
108
109 module SideTapeCutout1(y0,y1) {
110   rectfromto([ spp7[0]-1, y0 ],
111              [ spp8[0]+1, y1 ]);
112 }
113
114 module SideTapeCutout() {
115   SideTapeCutout1(spp6y, spp5y);
116   SideTapeCutout1(spp3y, spp2y);
117   SideTapeCutout1(spp3y, spp2y);
118   SideTapeCutout1(spp11y, spp1[1] + 1);
119 }
120
121 module ToothProfile(){
122   polygon([tppA,
123            tppB,
124            tppS + [-0.1,0],
125            tppP,
126            tppC]);
127   hull(){
128     polygon([tppP,
129              tppM,
130              tppS]);
131     translate(tppM)
132       circle(r= tooth_th/2, $fa=3, $fs=0.1);
133   }
134 }
135
136 module Demo(){ ////toplevel
137   translate([0,0,-2]) LeftSideMainProfile(); 
138   translate([0,0,-2]) color("yellow") LeftTopMainProfile();
139   color("red") difference(){
140     LeftSideMainProfile();
141     SideTapeCutout();
142   }
143   translate([0,0,0]) color("purple") difference(){
144     LeftTopMainProfile();
145     TopTapeCutout();
146   }
147   translate([nook_cnr_rad*2 + 5, 0,0]) mirror([1,0,0]) {
148     color("red") RightSideMainProfile();
149     color("purple") RightTopMainProfile();
150     color("grey") translate([0,0,-2]) ToothProfile();
151   }
152   //%SideTapeCutout();
153 }
154
155 module FaceCore(z0,z1, extra_left, extra_right){
156   for (mx=[0,1]) mirror([mx,0,0]) {
157       for (my=[0,1]) mirror([0,my,0]) {
158           translate(-nom_cnr) {
159             rotate_extrude(angle=90, convexity=10)
160               translate(-[1,0,0] * nook_cnr_rad)
161               children(mx);
162           }
163         }
164       translate([nook_w/2, 0,0])
165         linextr_y_xz(-nom_cnr[1]-0.1, nom_cnr[1]+0.1)
166         children(1-mx);
167     }
168   for (my=[0,1]) mirror([0,my,0]) {
169       translate([0, -nook_h/2, 0]) {
170         linextr_x_yz(-nom_cnr[0]-0.1,    etxc + extra_left)  children(0);
171         linextr_x_yz(etxc - extra_right, etxb + extra_right) children(1);
172         linextr_x_yz(etxb - extra_left,  etxa + extra_left)  children(0);
173         linextr_x_yz(etxa - extra_right, nom_cnr[0]+0.1)     children(1);
174       }
175     }
176   if (!$test) {
177     linextr(z0,z1)
178       rectfromto(-nom_cnr, nom_cnr);
179   }
180 }
181
182 module Base(){ ////toplevel
183   FaceCore(spp7[1],spp8[1], 0.3, 0) {
184     LeftSideMainProfile();
185     RightSideMainProfile();
186   }
187 }
188
189 module Top(){ ////toplevel
190   FaceCore(tppE[1],tppD[1], -gap[0], gap[0] + 0.3) {
191     LeftTopMainProfile();
192     RightTopMainProfile();
193   }
194   translate([tooth_x, nook_h/2, 0])
195     linextr_x_yz(-tooth_w/2, +tooth_w/2)
196     mirror([1,0])
197     ToothProfile();
198 }
199
200 module TestExtrude(){
201   difference(){
202     linextr_y_xz(-test_pillar, tape_w+test_pillar) children(0);
203     linextr_y_xz(           0, tape_w            ) children(1);
204   }
205 }
206
207 module TestSide(){ ////toplevel
208   TestExtrude() { LeftSideMainProfile(); SideTapeCutout(); }
209 }
210
211 module TestTop(){ ////toplevel
212   TestExtrude() { LeftTopMainProfile(); TopTapeCutout(); }
213 }
214 module TestTopPrint(){ ////toplevel
215   rotate([180,0,0]) TestTop();
216 }