| blob | 250f11feaa06701e0eb16040b674877dbb98bbd1 |
1 //measures are in millimeters
2 AY=25.0;
3 AX=19.0;
4 EXTRA_Y=8.0;
5 EXTRA_Z=5.5;
6 BY=20.0;
7 BLX=14.5;
8 EZ=11.0;
9 FLZ=14.0;
10 H=12.75;
11 CYL_OFF_Z=70;
12 CYL_DEPTH=0.1;
13 CLIP_X=2;
14 CLIP_Y=0.75;
15 CLIP_H=3*CLIP_Y;
16 CORNER_RADIUS=2;
17 INNER_GUARD_RADIUS=6.5;
18 OUTER_GUARD_RADIUS=7.5;
19 SHAFT_OFF_Y=15.0;
20 SHAFT_X=8.0;
21 SHAFT_Y=6.0;
22 SHAFT_LENGTH=9.0;
23 SHAFT_THICKNESS=1.0;
24 SHAFT_CLIP_WIDTH=3.0;
25 SHAFT_CLIP_THICKNESS=0.75;
26 SHAFT_CLIP_HEIGHT=2.0;
27 SHAFT_CLIP_SLOPE_DEPTH=1.0;
28 SHAFT_CLIP_ANGLE=45;
29 SHAFT_END_CUTOUT_HEIGHT=1.5;
30 SHAFT_LARGE_SLOT_TO_BASE=1.5;
31 SHAFT_SMALL_SLOT_LENGTH=7.25;
32 SHAFT_SMALL_SLOT_WIDTH=2.5;
33 SHAFT_SPRING_HOLDER_WIDTH=3.0;
34 SHAFT_SPRING_HOLDER_TO_BASE=4.0;
35 SHAFT_SPRING_GUIDE_WIDTH=1.0;
36 SHAFT_SPRING_GUIDE_SIDES_HEIGHT=3.5;
37 STRUT_THICKNESS=1;
38 STRUT_HEIGHT=3;
39 STRUT_SPACING=1;
40 SHAFT_SPRING_HOLDER_NIPPLE_HEIGHT=1;
41 SHAFT_SPRING_HOLDER_NIPPLE_RADIUS=0.75;
42 SHAFT_SMALL_SLOT_BEVEL=0.5;
44 WallThickness=0.75;
45 ClipWidth=2.2;
46 ClipDepth=0.75;
48 //ascfront=FLZ/sqrt(pow(FLZ,2)-pow(H,2));
49 //asctop=(H-EZ)/sqrt(pow(BLX,2)-pow((H-EZ),2));
51 alpha=asin((H-EZ)/BLX);
52 beta=asin(H/FLZ);
53 gamma=90-asin((0.5*(AY-BY))/EZ);
55 module keycap(){
56 scale([AX/(AX+2*CORNER_RADIUS),AY/(AY+2*CORNER_RADIUS),1])
57 translate([CORNER_RADIUS,CORNER_RADIUS,0.01])
58 minkowski(){
59 difference(){
60 union(){
61 difference(){
62 cube([AX,AY,H]);
63 rotate(a=gamma,v=[1,0,0]) cube([100,100,100]);
64 translate([0,AY,0]) rotate(a=90-gamma,v=[1,0,0]) cube([100,100,100]);
65 }
66 translate([0, BY+(AY-BY)/2, 0]) cube([AX,(AY-BY)/2+EXTRA_Y,EXTRA_Z]);
67 }
68 translate([0,AY+EXTRA_Y,0]) rotate(a=90-gamma,v=[1,0,0]) cube([100,100,100]);
69 translate([0,0,EZ]) rotate(a=-alpha,v=[0,1,0]) translate([-50,0,0]) cube([100,100,100]);
70 translate([0,AY/2,EZ+CYL_OFF_Z]) rotate(a=90-alpha,v=[0,1,0]) cylinder(h=100,center=true,r=CYL_OFF_Z+CYL_DEPTH,$fa=1);
71 translate([AX,0,0]) rotate(a=beta-90,v=[0,1,0]) cube([100,100,100]);
72 }
73 cylinder(h=0.01,r=CORNER_RADIUS,$fs=0.6);
74 ////rotate(a=90,v=[1,0,0]) cylinder(h=0.01,r=1,$fs=0.3);
75 }
76 }
78 module blind_shaft(){
80 }
82 module shaft(){
83 spring_guide_length = SHAFT_X-SHAFT_THICKNESS-SHAFT_SPRING_HOLDER_WIDTH;
84 spring_guide_height = SHAFT_SPRING_HOLDER_TO_BASE-SHAFT_LARGE_SLOT_TO_BASE;
85 translate([0,0,-SHAFT_LENGTH]) difference(){
86 union(){
87 difference(){
88 union(){
89 difference(){
90 intersection(){
91 cylinder(h=100,r=SHAFT_X/2,$fs=0.3);
92 translate([-SHAFT_X/2,-SHAFT_Y/2,0]) cube([SHAFT_X,SHAFT_Y,100]);
93 }
94 intersection(){
95 cylinder(h=100,r=SHAFT_X/2-SHAFT_THICKNESS,$fs=0.3);
96 translate([-SHAFT_X/2+SHAFT_THICKNESS,-SHAFT_Y/2+SHAFT_THICKNESS,0]) cube([SHAFT_X-2*SHAFT_THICKNESS,SHAFT_Y-2*SHAFT_THICKNESS,100]);
97 }
98 }
99 translate([-SHAFT_CLIP_WIDTH/2, -SHAFT_CLIP_THICKNESS-SHAFT_Y/2,0]) cube([SHAFT_CLIP_WIDTH/2, SHAFT_CLIP_THICKNESS,SHAFT_CLIP_HEIGHT]);
100 translate([-SHAFT_CLIP_WIDTH/2, SHAFT_Y/2,0]) cube([SHAFT_CLIP_WIDTH/2, SHAFT_CLIP_THICKNESS,SHAFT_CLIP_HEIGHT]);
101 }
102 translate([-SHAFT_CLIP_WIDTH/2, -SHAFT_CLIP_THICKNESS-SHAFT_Y/2+SHAFT_CLIP_SLOPE_DEPTH,0]) rotate(a=90+SHAFT_CLIP_ANGLE,v=[1,0,0]) cube([SHAFT_CLIP_WIDTH/2,100,100]);
103 translate([-SHAFT_CLIP_WIDTH/2, SHAFT_Y/2+SHAFT_CLIP_THICKNESS-SHAFT_CLIP_SLOPE_DEPTH,0]) mirror([0,1,0]) rotate(a=90+SHAFT_CLIP_ANGLE,v=[1,0,0]) cube([SHAFT_CLIP_WIDTH/2,100,100]);
104 translate([0,-50,0]) cube([100,100,SHAFT_END_CUTOUT_HEIGHT]);
105 translate([0,-SHAFT_Y/2+SHAFT_THICKNESS,0]) cube([100,SHAFT_Y-SHAFT_THICKNESS*2,SHAFT_LENGTH+SHAFT_LARGE_SLOT_TO_BASE]);
106 //small slot cutout
107 translate([0,-SHAFT_SMALL_SLOT_WIDTH/2,0]){
108 mirror([1,0,0]) cube([100,SHAFT_SMALL_SLOT_WIDTH,SHAFT_SMALL_SLOT_LENGTH-0.5*SHAFT_SMALL_SLOT_WIDTH]);
109 }
110 //small slot cutout
111 translate([0,0,SHAFT_SMALL_SLOT_LENGTH-0.5*SHAFT_SMALL_SLOT_WIDTH]) rotate(a=-90,v=[0,1,0]) cylinder(r=SHAFT_SMALL_SLOT_WIDTH/2,h=SHAFT_X/2,$fs=0.3);
112 }
113 //spring holder
114 translate([-SHAFT_X/2+SHAFT_SPRING_HOLDER_WIDTH/2+SHAFT_THICKNESS,0,SHAFT_LENGTH+SHAFT_SPRING_HOLDER_TO_BASE]) cylinder(r=SHAFT_SPRING_HOLDER_WIDTH/2,h=100,$fs=0.3);
115 intersection(){
116 translate([-SHAFT_X/2+SHAFT_SPRING_HOLDER_WIDTH/2+SHAFT_THICKNESS,0,SHAFT_LENGTH+SHAFT_SPRING_HOLDER_TO_BASE-SHAFT_SPRING_HOLDER_NIPPLE_HEIGHT]) cylinder(r=SHAFT_SPRING_HOLDER_NIPPLE_RADIUS,h=100,$fs=0.3);
117 translate([0,0,SHAFT_LENGTH+SHAFT_SPRING_HOLDER_TO_BASE-SHAFT_SPRING_HOLDER_NIPPLE_HEIGHT*1.5]) rotate(v=[0,1,0], a=atan(SHAFT_SPRING_HOLDER_NIPPLE_HEIGHT/(SHAFT_SPRING_HOLDER_NIPPLE_RADIUS*2))) translate([-50,-50,0]) cube(100,100,100);
118 }
119 intersection(){
120 difference(){
121 translate([SHAFT_X/2-SHAFT_THICKNESS,-0.5*SHAFT_SPRING_GUIDE_WIDTH,SHAFT_LENGTH+SHAFT_LARGE_SLOT_TO_BASE]) mirror([1,0,0]) cube([100,SHAFT_SPRING_GUIDE_WIDTH,100]);
122 translate([-SHAFT_X/2+SHAFT_SPRING_HOLDER_WIDTH+SHAFT_THICKNESS,-0.5*SHAFT_SPRING_GUIDE_WIDTH,SHAFT_LENGTH+SHAFT_SPRING_HOLDER_TO_BASE])
123 mirror([1,0,0]) rotate(a=90-asin(spring_guide_height/spring_guide_length),v=[0,1,0]) mirror([0,0,1]) translate([0,0,-50]) cube([100,SHAFT_SPRING_GUIDE_WIDTH,100]);
124 }
125 cube([SHAFT_X-SHAFT_THICKNESS,SHAFT_Y,100],center=true);
126 }
127 //side spring guides
128 difference(){
129 translate([-SHAFT_X/2+SHAFT_THICKNESS+(SHAFT_SPRING_HOLDER_WIDTH-SHAFT_SPRING_GUIDE_WIDTH)/2,-SHAFT_Y/2+SHAFT_THICKNESS,SHAFT_LENGTH+SHAFT_SPRING_HOLDER_TO_BASE-SHAFT_SPRING_GUIDE_SIDES_HEIGHT]) cube([SHAFT_SPRING_GUIDE_WIDTH,SHAFT_Y-2*SHAFT_THICKNESS,EZ-SHAFT_SPRING_HOLDER_TO_BASE+SHAFT_SPRING_GUIDE_SIDES_HEIGHT]);
130 translate([-SHAFT_X/2+SHAFT_THICKNESS+(SHAFT_SPRING_HOLDER_WIDTH-SHAFT_SPRING_GUIDE_WIDTH)/2,-SHAFT_SPRING_HOLDER_WIDTH/2,SHAFT_LENGTH+SHAFT_SPRING_HOLDER_TO_BASE]) rotate(a=-asin(((SHAFT_Y-SHAFT_SPRING_HOLDER_WIDTH)/2-SHAFT_THICKNESS)/SHAFT_SPRING_GUIDE_SIDES_HEIGHT),v=[1,0,0]) translate([0,0,-50]) cube([SHAFT_SPRING_GUIDE_WIDTH,100,100]);
131 }
132 difference(){
133 translate([-SHAFT_X/2+SHAFT_THICKNESS+(SHAFT_SPRING_HOLDER_WIDTH-SHAFT_SPRING_GUIDE_WIDTH)/2,-SHAFT_Y/2+SHAFT_THICKNESS,SHAFT_LENGTH+SHAFT_SPRING_HOLDER_TO_BASE-SHAFT_SPRING_GUIDE_SIDES_HEIGHT]) cube([SHAFT_SPRING_GUIDE_WIDTH,SHAFT_Y-2*SHAFT_THICKNESS,EZ-SHAFT_SPRING_HOLDER_TO_BASE+SHAFT_SPRING_GUIDE_SIDES_HEIGHT]);
134 mirror([0,1,0]) translate([-SHAFT_X/2+SHAFT_THICKNESS+(SHAFT_SPRING_HOLDER_WIDTH-SHAFT_SPRING_GUIDE_WIDTH)/2,-SHAFT_SPRING_HOLDER_WIDTH/2,SHAFT_LENGTH+SHAFT_SPRING_HOLDER_TO_BASE]) rotate(a=-asin(((SHAFT_Y-SHAFT_SPRING_HOLDER_WIDTH)/2-SHAFT_THICKNESS)/SHAFT_SPRING_GUIDE_SIDES_HEIGHT),v=[1,0,0]) translate([0,0,-50]) cube([SHAFT_SPRING_GUIDE_WIDTH,100,100]);
135 }
136 }
137 translate([-SHAFT_X/2+SHAFT_SPRING_HOLDER_WIDTH+SHAFT_THICKNESS,-SHAFT_Y/2+SHAFT_THICKNESS,SHAFT_LENGTH+SHAFT_SPRING_HOLDER_TO_BASE]) mirror([1,0,0]) rotate(a=90-asin(spring_guide_height/spring_guide_length),v=[0,1,0]) mirror([0,0,1]) cube([SHAFT_THICKNESS,SHAFT_Y-2*SHAFT_THICKNESS,100]);
138 }
139 }
141 module guard(){
142 difference(){
143 union(){
144 cube([STRUT_THICKNESS,100,100],center=true);
145 cube([100,STRUT_THICKNESS,100],center=true);
146 cylinder(r=OUTER_GUARD_RADIUS,h=100);
147 }
148 difference(){
149 cylinder(r=INNER_GUARD_RADIUS,h=100);
150 translate([-STRUT_SPACING/2-STRUT_THICKNESS,-50,EZ-STRUT_HEIGHT]) cube([STRUT_THICKNESS,100,STRUT_HEIGHT]);
151 translate([STRUT_SPACING/2,-50,EZ-STRUT_HEIGHT]) cube([STRUT_THICKNESS,100,STRUT_HEIGHT]);
152 translate([-50,-STRUT_SPACING/2-STRUT_THICKNESS,EZ-STRUT_HEIGHT]) cube([100,STRUT_THICKNESS,STRUT_HEIGHT]);
153 translate([-50,STRUT_SPACING/2,EZ-STRUT_HEIGHT]) cube([100,STRUT_THICKNESS,STRUT_HEIGHT]);
154 }
155 }
156 }
158 difference(){
159 keycap();
160 difference(){
161 translate([WallThickness, WallThickness, 0]) scale(v=[1-2*WallThickness/AX, 1-2*WallThickness/AY, 1-WallThickness/H]) keycap();
162 translate([OUTER_GUARD_RADIUS+WallThickness,SHAFT_OFF_Y]) guard();
163 }
164 }
165 intersection(){
166 union(){
167 translate([WallThickness, WallThickness, 0]) scale(v=[1-2*WallThickness/AX, 1-2*WallThickness/AY, 1-WallThickness/H]) keycap();
168 translate([-50,-50,-99.9]) cube([100,100,100]);
169 }
170 translate([OUTER_GUARD_RADIUS+WallThickness,SHAFT_OFF_Y]) union(){
171 shaft();
172 }
173 }