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-rw-r--r--another.scad2
1 files changed, 1 insertions, 1 deletions
diff --git a/another.scad b/another.scad
index ee7a0ff..2825c07 100644
--- a/another.scad
+++ b/another.scad
@@ -44,97 +44,97 @@ module the_extruder(
44 idler_screw_d = 3, 44 idler_screw_d = 3,
45 idler_screwhead_d=6, idler_screwhead_h=3, 45 idler_screwhead_d=6, idler_screwhead_h=3,
46 46
47 pf = pushfit_metal, 47 pf = pushfit_metal,
48 pf_shell = max(3*layer_height,3*extrusion_width), 48 pf_shell = max(3*layer_height,3*extrusion_width),
49 49
50 // empty spaces 50 // empty spaces
51 idler_travel = 1.75*2, // how far should idler travel when pressed 51 idler_travel = 1.75*2, // how far should idler travel when pressed
52 idler_clearance=.5, 52 idler_clearance=.5,
53 pulley_small_d_clearance=.5, 53 pulley_small_d_clearance=.5,
54 lever_v_clearance=.7, // vertical clearance for the lever 54 lever_v_clearance=.7, // vertical clearance for the lever
55 spring_d_clearance=1, 55 spring_d_clearance=1,
56 protrusion_tolerance_h=.5, // horizontal tolerance for the motor protrusion 56 protrusion_tolerance_h=.5, // horizontal tolerance for the motor protrusion
57 protrusion_tolerance_v=.5, // vertical tolerance for the motor protrusion 57 protrusion_tolerance_v=.5, // vertical tolerance for the motor protrusion
58 mount_screw_d_tolerance=.4, 58 mount_screw_d_tolerance=.4,
59 idler_v_tolerance=.5, 59 idler_v_tolerance=.5,
60 knob_bore_d_tolerance=.8, 60 knob_bore_d_tolerance=.8,
61 st_nut_h_tolerance=.2, 61 st_nut_h_tolerance=.2,
62 st_nut_d_tolerance=.2,/* TODO: make it st_nut_w_tolerance */ 62 st_nut_d_tolerance=.2,/* TODO: make it st_nut_w_tolerance */
63 st_screw_d_tolerance=.5, 63 st_screw_d_tolerance=.5,
64 st_split_w_tolerance = .3, 64 st_split_w_tolerance = .3,
65 65
66 min_z_shell = 4*layer_height, // the very minimal shell thickness along z-axis. 66 min_z_shell = 4*layer_height, // the very minimal shell thickness along z-axis.
67 min_xy_shell = 2*extrusion_width, 67 min_xy_shell = 2*extrusion_width,
68 68
69 body_label = "another", body_label_thickness = layer_height, 69 body_label = "another", body_label_thickness = layer_height,
70 knob_label = "another", knob_label_thickness = 2*layer_height, knob_label_size=undef, 70 knob_label = "another", knob_label_thickness = 2*layer_height, knob_label_size=undef,
71 71
72 what="lever", // lever|body|knob|springpad|* 72 what="lever", // lever|body|knob|springpad|*
73 left=false, 73 left=false,
74 vitamins = true, 74 vitamins = true,
75 bridges = true, 75 bridges = true,
76 debug = false, 76 debug = false,
77) { 77) {
78 fnd = 2*PI; fnr = 2*fnd; 78 fnd = 2*PI; fnr = 2*fnd;
79 function lu(m,k) = m[search([k],m)[0]][1]; 79 function lu(m,k) = m[search([k],m)[0]][1];
80 80
81 pulley_d = lu(pulley,"d"); 81 pulley_d = lu(pulley,"d");
82 pulley_h = lu(pulley,"h"); 82 pulley_h = lu(pulley,"h");
83 teeth_elevation = lu(pulley,"fe"); 83 teeth_elevation = lu(pulley,"fe");
84 filament_offset = lu(pulley,"g")+filament_d/2; 84 filament_offset = lu(pulley,"g")+filament_d/2;
85 pulley_d_clearance = lu(pulley,"ssrc")*2; 85 pulley_d_clearance = lu(pulley,"ssrc")*2;
86 86
87 sp_ch = st_split_w; 87 sp_ch = st_split_w;
88 88
89 idler_filament_offset = filament_path_d/2; 89 idler_filament_offset = filament_path_d/2;
90 lever_shell = mount_screwhead_h+0.5; 90 lever_shell = mount_screwhead_h+0.5;
91 lever_thickness=max(spring_d+spring_d_clearance+layer_height*8,idler_h+idler_v_tolerance+2*lever_shell); 91 lever_thickness=max(spring_d+spring_d_clearance+layer_height*8,idler_h+idler_v_tolerance+2*lever_shell);
92 lsd = idler_d-idler_clearance*2; // the diameter of lever thingie 92 lsd = min(gearbox_d-mount_d,idler_d-idler_clearance*2); // the diameter of lever thingie
93 longwing=(mount_d+mount_screw_d+mount_screw_d_tolerance+spring_d+spring_d_clearance)/2+min_xy_shell; 93 longwing=(mount_d+mount_screw_d+mount_screw_d_tolerance+spring_d+spring_d_clearance)/2+min_xy_shell;
94 shortwing = let(a=mount_d/2,c=(pulley_d+idler_d)/2/sqrt(2)) 94 shortwing = let(a=mount_d/2,c=(pulley_d+idler_d)/2/sqrt(2))
95 sqrt(c*c+pow(a-c,2)); 95 sqrt(c*c+pow(a-c,2));
96 longwing_travel = idler_travel*longwing/shortwing; 96 longwing_travel = idler_travel*longwing/shortwing;
97 h_ = (pulley_d+idler_d)/(2*sqrt(2)); 97 h_ = (pulley_d+idler_d)/(2*sqrt(2));
98 ri = sqrt( pow(h_,2) + pow(mount_d/2-h_,2) ); 98 ri = sqrt( pow(h_,2) + pow(mount_d/2-h_,2) );
99 spring_dl = idler_travel*longwing/ri; 99 spring_dl = idler_travel*longwing/ri;
100 // finger and spring support width 100 // finger and spring support width
101 fsw = gearbox_d-(gearbox_d-mount_d)/2-max(spring_lc,longwing_travel+(gearbox_d-mount_d)/2); 101 fsw = gearbox_d-(gearbox_d-mount_d)/2-max(spring_lc,longwing_travel+(gearbox_d-mount_d)/2);
102 102
103 mount_min_depth = mounthole_min_depth ? mounthole_min_depth : mounthole_depth-1; 103 mount_min_depth = mounthole_min_depth ? mounthole_min_depth : mounthole_depth-1;
104 mount_max_depth = mounthole_max_depth ? mounthole_max_depth : mounthole_depth+1; 104 mount_max_depth = mounthole_max_depth ? mounthole_max_depth : mounthole_depth+1;
105 filament_elevation=protrusion_h+pulley_elevation+teeth_elevation; 105 filament_elevation=protrusion_h+pulley_elevation+teeth_elevation;
106 ls_z = filament_elevation; // leverspace mid-z 106 ls_z = filament_elevation; // leverspace mid-z
107 ls_h = lever_thickness+lever_v_clearance; // leverspace height 107 ls_h = lever_thickness+lever_v_clearance; // leverspace height
108 mount_depth = mount_screw_l - (ls_z+ls_h/2+min_z_shell); 108 mount_depth = mount_screw_l - (ls_z+ls_h/2+min_z_shell);
109 body_h = max(protrusion_h+bore_l,mount_screw_l-mount_depth+mount_screwhead_h+min_z_shell,ls_z*2); 109 body_h = max(protrusion_h+bore_l,mount_screw_l-mount_depth+mount_screwhead_h+min_z_shell,ls_z*2);
110 echo("mount depth",mount_depth); 110 echo("mount depth",mount_depth);
111 111
112 pf_offset = mount_d/sqrt(2)/2+mount_screw_d/2+min_xy_shell; 112 pf_offset = mount_d/sqrt(2)/2+mount_screw_d/2+min_xy_shell;
113 113
114 module teardrop(r,d,h,center=false,angle=45) { 114 module teardrop(r,d,h,center=false,angle=45) {
115 dd = d ? d : (2*r); 115 dd = d ? d : (2*r);
116 $fn = dd*fnd; 116 $fn = dd*fnd;
117 cylinder(d=dd,h=h,center=center); 117 cylinder(d=dd,h=h,center=center);
118 if(angle>0) translate([0,0,center?-h/2:0]) 118 if(angle>0) translate([0,0,center?-h/2:0])
119 rotate([0,0,angle]) 119 rotate([0,0,angle])
120 cube(size=[d/2,d/2,h]); 120 cube(size=[d/2,d/2,h]);
121 } 121 }
122 122
123 module mirrorleft() { 123 module mirrorleft() {
124 mirror([left?0:1,0,0]) children(); 124 mirror([left?0:1,0,0]) children();
125 } 125 }
126 module place_idler() { 126 module place_idler() {
127 rotate([0,0,45]) 127 rotate([0,0,45])
128 translate([(pulley_d+idler_d)/2,0,0]) 128 translate([(pulley_d+idler_d)/2,0,0])
129 children(); 129 children();
130 } 130 }
131 module finger_indent(d=lever_thickness,depth/*=1*/,r/*=15*/) { 131 module finger_indent(d=lever_thickness,depth/*=1*/,r/*=15*/) {
132 if(depth) { 132 if(depth) {
133 hh = (-4*pow(depth,2)+pow(d,2))/(8*depth); 133 hh = (-4*pow(depth,2)+pow(d,2))/(8*depth);
134 rr = depth+hh; 134 rr = depth+hh;
135 translate([0,0,hh]) sphere(r=rr,$fn=fnr*rr); 135 translate([0,0,hh]) sphere(r=rr,$fn=fnr*rr);
136 }else if(r) { 136 }else if(r) {
137 hh=sqrt(pow(r,2)-pow(d,2)/4); 137 hh=sqrt(pow(r,2)-pow(d,2)/4);
138 translate([0,0,hh]) sphere(r=r,$fn=fnr*r); 138 translate([0,0,hh]) sphere(r=r,$fn=fnr*r);
139 } 139 }
140 } 140 }