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Merge pull request #1523 from amatulic/ballbearing

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Added rounding parameter as discussed in #1476
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Revar Desmera 2024-12-14 02:20:09 -08:00 committed by GitHub
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1 changed files with 14 additions and 15 deletions
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29
ball_bearings.scad
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@ -24,10 +24,11 @@
// id = Inner diameter of ball bearing assembly. // id = Inner diameter of ball bearing assembly.
// od = Outer diameter of ball bearing assembly. // od = Outer diameter of ball bearing assembly.
// width = Width of ball bearing assembly. // width = Width of ball bearing assembly.
// shield = Does the ball bearing assembly have a shield. // shield = If true, the ball bearing assembly has a shield.
// flange = Does the ball bearing assembly have a flange. // flange = If true, the ball bearing assembly has a flange.
// fd = Diameter of the flange (only used if `flange=true`). // fd = Diameter of the flange (required if `flange=true`).
// fw = Width of the flange (only used if `flange=true`). // fw = Width of the flange (required if `flange=true`).
// rounding = Edge rounding radius, if any. The outermost top and bottom edges are rounded by this amount. The edges of the inner hole are also rounded. If you set `trade_size` and you want edges rounded, you must set `rounding` yourself. This parameter has no default value because the rounding depends on manufacturer and bearing size.
// anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#subsection-anchor). Default: `CENTER` // 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 after anchor. See [spin](attachments.scad#subsection-spin). Default: `0` // spin = Rotate this many degrees around the Z axis after anchor. See [spin](attachments.scad#subsection-spin). Default: `0`
// orient = Vector to rotate top towards, after spin. See [orient](attachments.scad#subsection-orient). Default: `UP` // orient = Vector to rotate top towards, after spin. See [orient](attachments.scad#subsection-orient). Default: `UP`
@ -43,9 +44,9 @@
// ball_bearing("MF105ZZ", $fn=72); // ball_bearing("MF105ZZ", $fn=72);
// Example: // Example:
// ball_bearing("F688ZZ", $fn=72); // ball_bearing("F688ZZ", $fn=72);
// Example: // Example: With flange, shield, and rounded edges.
// ball_bearing(id=12,od=24,width=6,shield=true, flange=true, fd=26.5, fw=1.5, $fn=72); // ball_bearing(id=12,od=24,width=6,shield=true, flange=true, fd=26.5, fw=1.5, rounding=0.6, $fn=72);
module ball_bearing(trade_size, id, od, width, shield=true, flange=false, fd, fw, anchor=CTR, spin=0, orient=UP) { module ball_bearing(trade_size, id, od, width, shield=true, flange=false, fd, fw, rounding, anchor=CTR, spin=0, orient=UP) {
info = is_undef(trade_size)? [id, od, width, shield, flange, fd, fw] : info = is_undef(trade_size)? [id, od, width, shield, flange, fd, fw] :
ball_bearing_info(trade_size); ball_bearing_info(trade_size);
check = assert(all_defined(select(info, 0,4)), "Bad Input"); check = assert(all_defined(select(info, 0,4)), "Bad Input");
@ -65,18 +66,18 @@ module ball_bearing(trade_size, id, od, width, shield=true, flange=false, fd, fw
color("silver") color("silver")
attachable(anchor,spin,orient, d=od, l=width) { attachable(anchor,spin,orient, d=od, l=width) {
if (shield) { if (shield) {
tube(id=id, wall=wall, h=width); tube(id=id, wall=wall, h=width, irounding=rounding);
tube(od=od, wall=wall, h=width); tube(od=od, wall=wall, h=width, orounding1=flange?undef:rounding, orounding2=rounding);
tube(id=id+0.1, od=od-0.1, h=(wall*2+width)/2); tube(id=id+0.1, od=od-0.1, h=(wall*2+width)/2);
if (flange){ if (flange){
translate([0,0,-width/2+fw/2])tube(id=od, od=fd, h=fw); translate([0,0,-width/2+fw/2])tube(id=od, od=fd, h=fw, orounding1=rounding);
} }
} else { } else {
ball_cnt = floor(PI*mid_d*0.95 / (wall*2)); ball_cnt = floor(PI*mid_d*0.95 / (wall*2));
difference() { difference() {
union() { union() {
tube(id=id, wall=wall, h=width); tube(id=id, wall=wall, h=width, irounding=rounding);
tube(od=od, wall=wall, h=width); tube(od=od, wall=wall, h=width, orounding1=flange?undef:rounding, orounding2=rounding);
} }
torus(r_maj=mid_d/2, r_min=wall); torus(r_maj=mid_d/2, r_min=wall);
} }
@ -84,11 +85,9 @@ module ball_bearing(trade_size, id, od, width, shield=true, flange=false, fd, fw
zrot(i*360/ball_cnt) right(mid_d/2) sphere(d=wall*2); zrot(i*360/ball_cnt) right(mid_d/2) sphere(d=wall*2);
} }
if (flange){ if (flange){
translate([0,0,-width/2+fw/2])tube(id=od, od=fd, h=fw); translate([0,0,-width/2+fw/2])tube(id=od, od=fd, h=fw, orounding1=rounding);
} }
} }
children(); children();
} }
} }