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fix spacings, make spacing and fixing width also parameters, remove B2 parameter

master
Vitaliy Filippov 2014-06-07 12:43:33 +00:00
parent 38113e5caf
commit fa4f59f538
1 changed files with 44 additions and 30 deletions
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74
tire/tire_81.6_50.scad
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@ -12,8 +12,8 @@ THICKNESS=2.5;
PROT_DEPTH=1;
PROT_L_WIDTH=2;
PROT_A_WIDTH=2;
FIX_WIDTH=2;
B=2.5; // width of edge for the rim
B2=B+2;
B_W=1.6; // thickness of edge for the rim
B_P=4; // position of edge for the rim
W=50; // tire width
@ -25,8 +25,9 @@ CUT_BASE=8;
CUT_ANGLE=12;
CUT_I_R=1.5;
CUT_O_R=2;
SPACING=0.2;
/*// 6-spoke variant
// 6-spoke variant
N_SPOKE=6;
CUT_ANGLE=21;
CUT_I_R=2.5;
@ -37,57 +38,72 @@ N_L=2;
R=22;
BEVEL=1;
THICKNESS=1.5;
FIX_WIDTH=1;
PROT_A_WIDTH=1;
PROT_L_WIDTH=1;
B=1.5;
B2=B+0.5;
B_P=3;
B=1;
R_I=15;
CUT_O_R=1;
CUT_BASE=5;
W=20;*/
W=20;
translate([0, 0, W]) rotate([180, 0, 0]) {
rim();
difference() {
union() {
translate([0, 0, W]) rotate([180, 0, 0]) {
rim();
/*
// Support ...
translate([0, 0, SPOKE_THICKNESS+(R_I-2-CUT_BASE)/2+0.4]) cylinder(r=CUT_BASE, h=W-(SPOKE_THICKNESS+(R_I-2-CUT_BASE)/2+0.4));
translate([0, 0, W-(B_P-2-0.2)+0.4]) cylinder(r=R_I+B+2, h=(B_P-2-0.2)-0.4);
translate([0, 0, W-(B_P-2-0.2)-2-B+0.5+0.4]) difference() {
cylinder(r=R_I+B+2, h=(B_P-2-0.2)+2+B-0.5-0.4);
translate([0, 0, -0.5]) cylinder(r=R_I+B+0.4, h=1+(B_P-2-0.2)+2+B-0.5-0.4);
}
// Support ...
translate([0, 0, SPOKE_THICKNESS+(R_I-2-CUT_BASE)/2+SPACING]) cylinder(r=CUT_BASE, h=W-(SPOKE_THICKNESS+(R_I-2-CUT_BASE)/2+SPACING));
translate([0, 0, W-(B_P-FIX_WIDTH-SPACING)+SPACING]) cylinder(r=R_I+B+THICKNESS, h=(B_P-FIX_WIDTH-SPACING)-SPACING);
translate([0, 0, W-(B_P-FIX_WIDTH-SPACING)-2-B+SPACING]) difference() {
cylinder(r=R_I+B+THICKNESS, h=(B_P-FIX_WIDTH-SPACING)+2+B-SPACING);
translate([0, 0, -0.5]) cylinder(r=R_I+B+SPACING, h=1+(B_P-2-0.2)+2+B-SPACING);
}
*/
}
tire();
}
// to cut and look inside :)
translate([0, 0, -0.5]) cube(size=[R+10, R+10, W+1]);
}
tire();
module rim() {
color([0.5, 0.5, 1]) {
difference() {
union() {
cylinder(r=R_I-0.2, h=W-(B_P-2-0.2));
cylinder(r=R_I+B-0.5, h=2+(B_P-2-0.2));
translate([0, 0, W-(B_P-2-0.2)-2]) cylinder(r=R_I+B-0.5, h=2);
hull() {
translate([0, 0, (B_P-2-0.2)+B_P]) cylinder(r=R_I+B2, h=2);
translate([0, 0, (B_P-2-0.2)+B_P+B2+0.2]) cylinder(r=R_I-0.2, h=2);
cylinder(r=R_I-SPACING, h=W-(B_P-FIX_WIDTH-SPACING));
// outer fixing edges
cylinder(r=R_I+B-SPACING, h=FIX_WIDTH+(B_P-FIX_WIDTH-SPACING));
translate([0, 0, W-(B_P-FIX_WIDTH-SPACING)-FIX_WIDTH]) cylinder(r=R_I+B-SPACING, h=FIX_WIDTH);
// inner fixing edges, 45 degree slope for easier printing
translate([0, 0, FIX_WIDTH+(B_P-FIX_WIDTH-SPACING)+(B_W+SPACING)+SPACING]) hull() {
cylinder(r=R_I+B+THICKNESS, h=FIX_WIDTH);
translate([0, 0, B+THICKNESS+SPACING]) cylinder(r=R_I-SPACING, h=FIX_WIDTH);
}
hull() {
translate([0, 0, W-(B_P-2-0.2)-6]) cylinder(r=R_I+B2, h=2);
translate([0, 0, W-(B_P-2-0.2)-6-B2-0.2]) cylinder(r=R_I-0.2, h=2);
translate([0, 0, W-(FIX_WIDTH+(B_P-FIX_WIDTH-SPACING)+(B_W+SPACING))-FIX_WIDTH-SPACING]) hull() {
cylinder(r=R_I+B+THICKNESS, h=FIX_WIDTH);
translate([0, 0, -(B+THICKNESS+SPACING)]) cylinder(r=R_I-SPACING, h=FIX_WIDTH);
}
}
// make spokes by cutting space between them
for (i = [1 : N_SPOKE])
rotate([0, 0, i*360/N_SPOKE]) rim_cut();
// cut spokes toroidally inside the rim
translate([0, 0, SPOKE_THICKNESS+(R_I-2-CUT_BASE)/2])
rotate_extrude(convexity = 10)
translate([(R_I-2-CUT_BASE)/2+CUT_BASE, 0, 0]) circle(r = (R_I-2-CUT_BASE)/2);
// remove the rest of spokes
translate([0, 0, SPOKE_THICKNESS+(R_I-2-CUT_BASE)/2]) cylinder(r=R_I-2, h=W);
// add axle hole at the center
translate([0, 0, -0.5]) linear_extrude(height=W+1) axle();
translate([0, 0, -1]) cylinder(r=CUT_BASE-2, h=5+(B_P-2-0.2));
// add center cut around axle hole
translate([0, 0, -1]) cylinder(r=CUT_BASE-2, h=5+(B_P-FIX_WIDTH-SPACING));
// make spokes convex using another toroidal cut
difference() {
translate([0, 0, -1]) cylinder(r=1+R_I+B-0.5/*R_I-2*/, h=1+(B_P-2-0.2));
translate([0, 0, (B_P-2-0.2)])
scale([1, 1, (B_P-2-0.2)/((R_I-2-CUT_BASE+2)/2)])
translate([0, 0, -1]) cylinder(r=1+R_I+B-0.5/*R_I-2*/, h=1+(B_P-FIX_WIDTH-SPACING));
translate([0, 0, (B_P-FIX_WIDTH-SPACING)])
scale([1, 1, (B_P-FIX_WIDTH-SPACING)/((R_I-2-CUT_BASE+2)/2)])
rotate_extrude(convexity = 10)
translate([(R_I-2-CUT_BASE+2)/2+CUT_BASE-2, 0, 0]) circle(r = (R_I-2-CUT_BASE+2)/2);
}
@ -149,8 +165,6 @@ difference() {
// angular protector
for (i = [1 : N_A])
rotate([0, 0, 360/N_A*i]) protector_single();
// to cut and look inside :)
translate([0, 0, -0.5]) cube(size=[R+10, R+10, W+1]);
}
}