grey/BOSL2
1
0
Fork 0
mirror of https://github.com/BelfrySCAD/BOSL2.git synced 2025-01-01 09:49:45 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Added mate_teeth= and apex named anchor to bevel_gear()

Browse source
This commit is contained in:
Garth Minette 2020-10-14 15:37:56 -07:00
parent 775e0c4c48
commit 4fc03b18e6
2 changed files with 11 additions and 12 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

21
involute_gears.scad
View file

@ -471,24 +471,21 @@ module gear(
// spin = Rotate this many degrees around the Z axis after anchor. See [spin](attachments.scad#spin). Default: `0` // spin = Rotate this many degrees around the Z axis after anchor. See [spin](attachments.scad#spin). Default: `0`
// orient = Vector to rotate top towards, after spin. See [orient](attachments.scad#orient). Default: `UP` // orient = Vector to rotate top towards, after spin. See [orient](attachments.scad#orient). Default: `UP`
// Extra Anchors: // Extra Anchors:
// "apex" = At the pitch cone apex for the bevel gear.
// "pitchbase" = At the natural height of the pitch radius of the beveled gear. // "pitchbase" = At the natural height of the pitch radius of the beveled gear.
// "flattop" = At the top of the flat top of the bevel gear. // "flattop" = At the top of the flat top of the bevel gear.
// Example: Beveled Gear // Example: Beveled Gear
// bevel_gear(pitch=5, teeth=36, face_width=10, shaft_diam=5, pitch_angle=45, spiral_angle=0); // bevel_gear(pitch=5, teeth=36, face_width=10, shaft_diam=5, pitch_angle=45, spiral_angle=0);
// Example: Spiral Beveled Gear and Pinion // Example: Spiral Beveled Gear and Pinion
// t1 = 14; // t1 = 16; t2 = 28;
// t2 = 32; // bevel_gear(pitch=5, teeth=t1, mate_teeth=t2, slices=12, anchor="apex", orient=FWD);
// a1 = atan(t1/t2); // bevel_gear(pitch=5, teeth=t2, mate_teeth=t1, left_handed=true, slices=12, anchor="apex", spin=180/t2);
// a2 = atan(t2/t1);
// down(pitch_radius(5, t1))
// zrot(180/t2) bevel_gear(pitch=5, teeth=t2, face_width=10, shaft_diam=6, pitch_angle=a2, left_handed=true, slices=8, orient=UP);
// back(pitch_radius(5, t2))
// bevel_gear(pitch=5, teeth=t1, face_width=10, shaft_diam=6, pitch_angle=a1, slices=8, orient=FWD);
module bevel_gear( module bevel_gear(
pitch = 3, pitch = 3,
teeth = 11, teeth = 11,
face_width = 6, face_width = 10,
pitch_angle = 45, pitch_angle = 45,
mate_teeth = undef,
shaft_diam = 3, shaft_diam = 3,
hide = 0, hide = 0,
PA = 20, PA = 20,
@ -504,6 +501,7 @@ module bevel_gear(
orient = UP orient = UP
) { ) {
slices = cutter_radius==0? 1 : slices; slices = cutter_radius==0? 1 : slices;
pitch_angle = is_undef(mate_teeth)? pitch_angle : atan(teeth/mate_teeth);
pr = pitch_radius(pitch, teeth); pr = pitch_radius(pitch, teeth);
rr = root_radius(pitch, teeth, clearance, interior); rr = root_radius(pitch, teeth, clearance, interior);
pitchoff = (pr-rr) * cos(pitch_angle); pitchoff = (pr-rr) * cos(pitch_angle);
@ -535,7 +533,7 @@ module bevel_gear(
let( let(
u = polar.y / ocone_rad, u = polar.y / ocone_rad,
m = up((1-u) * pr / tan(pitch_angle)) * m = up((1-u) * pr / tan(pitch_angle)) *
up(2*pitchoff) * up(pitchoff) *
zrot(polar.x/sin(pitch_angle)) * zrot(polar.x/sin(pitch_angle)) *
back(u * pr) * back(u * pr) *
xrot(pitch_angle) * xrot(pitch_angle) *
@ -576,7 +574,8 @@ module bevel_gear(
vnf = left_handed? vnf1 : xflip(p=vnf1); vnf = left_handed? vnf1 : xflip(p=vnf1);
anchors = [ anchors = [
anchorpt("pitchbase", [0,0,pitchoff-thickness/2]), anchorpt("pitchbase", [0,0,pitchoff-thickness/2]),
anchorpt("flattop", [0,0,thickness/2]) anchorpt("flattop", [0,0,thickness/2]),
anchorpt("apex", [0,0,hyp_ang_to_opp(ocone_rad,90-pitch_angle)+pitchoff-thickness/2])
]; ];
attachable(anchor,spin,orient, vnf=vnf, extent=true, anchors=anchors) { attachable(anchor,spin,orient, vnf=vnf, extent=true, anchors=anchors) {
difference() { difference() {

2
version.scad
View file

@ -8,7 +8,7 @@
////////////////////////////////////////////////////////////////////// //////////////////////////////////////////////////////////////////////
BOSL_VERSION = [2,0,448]; BOSL_VERSION = [2,0,449];
// Section: BOSL Library Version Functions // Section: BOSL Library Version Functions