mirror of
https://github.com/BelfrySCAD/BOSL2.git
synced 2024-12-29 00:09:41 +00:00
200 lines
8.8 KiB
OpenSCAD
200 lines
8.8 KiB
OpenSCAD
//////////////////////////////////////////////////////////////////////
|
|
// LibFile: hingesnaps.scad
|
|
// Modules for creating snap-locking foldable hined parts. Includes the mask to create the hinge and
|
|
// modules to create the snap-locks.
|
|
// Includes:
|
|
// include <BOSL2/std.scad>
|
|
// include <BOSL2/hingesnaps.scad>
|
|
// FileGroup: Parts
|
|
// FileSummary: Foldable, snap-locking parts.
|
|
//////////////////////////////////////////////////////////////////////
|
|
|
|
// Section: Hinges and Snaps
|
|
|
|
// Module: apply_folding_hinges_and_snaps()
|
|
// Usage:
|
|
// apply_folding_hinges_and_snaps(thick, [foldangle=], [hinges=], [snaps=], [sockets=], [snaplen=], [snapdiam=], [hingegap=], [layerheight=]) CHILDREN;
|
|
// Description:
|
|
// Adds snaplocks and create hinges in children at the given positions.
|
|
// Arguments:
|
|
// thick = Thickness in mm of the material to make the hinge in.
|
|
// foldangle = The interior angle in degrees of the joint to be created with the hinge. Default: 90
|
|
// hinges = List of [LENGTH, POSITION, SPIN] for each hinge to difference from the children.
|
|
// snaps = List of [POSITION, SPIN] for each central snaplock to add to the children.
|
|
// sockets = List of [POSITION, SPIN] for each outer snaplock sockets to add to the children.
|
|
// snaplen = Length of locking snaps.
|
|
// snapdiam = Diameter/width of locking snaps.
|
|
// hingegap = Size in mm of the gap at the bottom of the hinge, to make room for folding.
|
|
// layerheight = The expected printing layer height in mm.
|
|
// Example(Med):
|
|
// size=100;
|
|
// apply_folding_hinges_and_snaps(
|
|
// thick=3, foldangle=54.74,
|
|
// hinges=[
|
|
// for (a=[0,120,240], b=[-size/2,size/4]) each [
|
|
// [200, polar_to_xy(b,a), a+90]
|
|
// ]
|
|
// ],
|
|
// snaps=[
|
|
// for (a=[0,120,240]) each [
|
|
// [rot(a,p=[ size/4, 0 ]), a+90],
|
|
// [rot(a,p=[-size/2,-size/2.33]), a-90]
|
|
// ]
|
|
// ],
|
|
// sockets=[
|
|
// for (a=[0,120,240]) each [
|
|
// [rot(a,p=[ size/4, 0 ]), a+90],
|
|
// [rot(a,p=[-size/2, size/2.33]), a+90]
|
|
// ]
|
|
// ]
|
|
// ) {
|
|
// $fn=3;
|
|
// difference() {
|
|
// cylinder(r=size-1, h=3);
|
|
// down(0.01) cylinder(r=size/4.5, h=3.1, spin=180);
|
|
// down(0.01) for (a=[0:120:359.9]) zrot(a) right(size/2) cylinder(r=size/4.5, h=3.1);
|
|
// }
|
|
// }
|
|
module apply_folding_hinges_and_snaps(thick, foldangle=90, hinges=[], snaps=[], sockets=[], snaplen=5, snapdiam=5, hingegap=undef, layerheight=0.2)
|
|
{
|
|
hingegap = default(hingegap, layerheight)+2*get_slop();
|
|
difference() {
|
|
children();
|
|
for (hinge = hinges) {
|
|
translate(hinge[1]) {
|
|
folding_hinge_mask(
|
|
l=hinge[0], thick=thick, layerheight=layerheight,
|
|
foldangle=foldangle, hingegap=hingegap, spin=hinge[2]
|
|
);
|
|
}
|
|
}
|
|
}
|
|
for (snap = snaps) {
|
|
translate(snap[0]) {
|
|
snap_lock(
|
|
thick=thick, snaplen=snaplen, snapdiam=snapdiam,
|
|
layerheight=layerheight, foldangle=foldangle,
|
|
hingegap=hingegap, spin=snap[1]
|
|
);
|
|
}
|
|
}
|
|
for (socket = sockets) {
|
|
translate(socket[0]) {
|
|
snap_socket(
|
|
thick=thick, snaplen=snaplen, snapdiam=snapdiam,
|
|
layerheight=layerheight, foldangle=foldangle,
|
|
hingegap=hingegap, spin=socket[1]
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
// Module: folding_hinge_mask()
|
|
// Usage:
|
|
// folding_hinge_mask(l, thick, [layerheight=], [foldangle=], [hingegap=], [anchor=], [spin=], [orient=]) [ATTACHMENTS];
|
|
// Description:
|
|
// Creates a mask to be differenced away from a plate to create a foldable hinge.
|
|
// Center the mask at the bottom of the plate you want to make a hinge in.
|
|
// The mask will leave hinge material two `layerheight`s thick on the bottom of the hinge.
|
|
// Arguments:
|
|
// l = Length of the hinge in mm.
|
|
// thick = Thickness in mm of the material to make the hinge in.
|
|
// ---
|
|
// layerheight = The expected printing layer height in mm.
|
|
// foldangle = The interior angle in degrees of the joint to be created with the hinge. Default: 90
|
|
// hingegap = Size in mm of the gap at the bottom of the hinge, to make room for folding.
|
|
// anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#subsection-anchor). Default: `CENTER`
|
|
// spin = Rotate this many degrees around the Z axis. See [spin](attachments.scad#subsection-spin). Default: `0`
|
|
// orient = Vector to rotate top towards. See [orient](attachments.scad#subsection-orient). Default: `UP`
|
|
// Example:
|
|
// folding_hinge_mask(l=100, thick=3, foldangle=60);
|
|
module folding_hinge_mask(l, thick, layerheight=0.2, foldangle=90, hingegap=undef, anchor=CENTER, spin=0, orient=UP)
|
|
{
|
|
hingegap = default(hingegap, layerheight)+2*get_slop();
|
|
size = [l, hingegap, 2*thick];
|
|
size2 = [l, hingegap+2*thick*tan(foldangle/2)];
|
|
attachable(anchor,spin,orient, size=size, size2=size2) {
|
|
up(layerheight*2) prismoid([l,hingegap], [l, hingegap+2*thick/tan(foldangle/2)], h=thick, anchor=BOT);
|
|
children();
|
|
}
|
|
}
|
|
|
|
|
|
// Module: snap_lock()
|
|
// Usage:
|
|
// snap_lock(thick, [snaplen=], [snapdiam=], [layerheight=], [foldangle=], [hingegap=], [anchor=], [spin=], [orient=]) [ATTACHMENTS];
|
|
// Description:
|
|
// Creates the central snaplock part.
|
|
// Arguments:
|
|
// thick = Thickness in mm of the material to make the hinge in.
|
|
// ---
|
|
// snaplen = Length of locking snaps.
|
|
// snapdiam = Diameter/width of locking snaps.
|
|
// layerheight = The expected printing layer height in mm.
|
|
// foldangle = The interior angle in degrees of the joint to be created with the hinge. Default: 90
|
|
// hingegap = Size in mm of the gap at the bottom of the hinge, to make room for folding.
|
|
// anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#subsection-anchor). Default: `CENTER`
|
|
// spin = Rotate this many degrees around the Z axis. See [spin](attachments.scad#subsection-spin). Default: `0`
|
|
// orient = Vector to rotate top towards. See [orient](attachments.scad#subsection-orient). Default: `UP`
|
|
// Example:
|
|
// snap_lock(thick=3, foldangle=60);
|
|
module snap_lock(thick, snaplen=5, snapdiam=5, layerheight=0.2, foldangle=90, hingegap=undef, anchor=CENTER, spin=0, orient=UP)
|
|
{
|
|
hingegap = default(hingegap, layerheight)+2*get_slop();
|
|
snap_x = (snapdiam/2) / tan(foldangle/2) + (thick-2*layerheight)/tan(foldangle/2) + hingegap/2;
|
|
size = [snaplen, snapdiam, 2*thick];
|
|
attachable(anchor,spin,orient, size=size) {
|
|
back(snap_x) {
|
|
cube([snaplen, snapdiam, snapdiam/2+thick], anchor=BOT) {
|
|
attach(TOP) xcyl(l=snaplen, d=snapdiam, $fn=16);
|
|
attach(TOP) xcopies(snaplen-snapdiam/4/3) xscale(0.333) sphere(d=snapdiam*0.8, $fn=12);
|
|
}
|
|
}
|
|
children();
|
|
}
|
|
}
|
|
|
|
|
|
// Module: snap_socket()
|
|
// Usage:
|
|
// snap_socket(thick, [snaplen=], [snapdiam=], [layerheight=], [foldangle=], [hingegap=], [anchor=], [spin=], [orient=]) [ATTACHMENTS];
|
|
// Description:
|
|
// Creates the outside snaplock socketed part.
|
|
// Arguments:
|
|
// thick = Thickness in mm of the material to make the hinge in.
|
|
// ---
|
|
// snaplen = Length of locking snaps.
|
|
// snapdiam = Diameter/width of locking snaps.
|
|
// layerheight = The expected printing layer height in mm.
|
|
// foldangle = The interior angle in degrees of the joint to be created with the hinge. Default: 90
|
|
// hingegap = Size in mm of the gap at the bottom of the hinge, to make room for folding.
|
|
// anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#subsection-anchor). Default: `CENTER`
|
|
// spin = Rotate this many degrees around the Z axis. See [spin](attachments.scad#subsection-spin). Default: `0`
|
|
// orient = Vector to rotate top towards. See [orient](attachments.scad#subsection-orient). Default: `UP`
|
|
// Example:
|
|
// snap_socket(thick=3, foldangle=60);
|
|
module snap_socket(thick, snaplen=5, snapdiam=5, layerheight=0.2, foldangle=90, hingegap=undef, anchor=CENTER, spin=0, orient=UP)
|
|
{
|
|
hingegap = default(hingegap, layerheight)+2*get_slop();
|
|
snap_x = (snapdiam/2) / tan(foldangle/2) + (thick-2*layerheight)/tan(foldangle/2) + hingegap/2;
|
|
size = [snaplen, snapdiam, 2*thick];
|
|
attachable(anchor,spin,orient, size=size) {
|
|
fwd(snap_x) {
|
|
zrot_copies([0,180], r=snaplen+get_slop()) {
|
|
diff("divot")
|
|
cube([snaplen, snapdiam, snapdiam/2+thick], anchor=BOT) {
|
|
attach(TOP) xcyl(l=snaplen, d=snapdiam, $fn=16);
|
|
attach(TOP) left((snaplen+snapdiam/4/3)/2) xscale(0.333) sphere(d=snapdiam*0.8, $fn=12, $tags="divot");
|
|
}
|
|
}
|
|
}
|
|
children();
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
// vim: expandtab tabstop=4 shiftwidth=4 softtabstop=4 nowrap
|