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Ring gear fixes.

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Revar Desmera 2023-07-17 13:41:56 -07:00
parent bf65b77cf5
commit 6c2e189aeb
1 changed files with 27 additions and 21 deletions
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48
gears.scad
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@ -605,8 +605,9 @@ module spur_gear2d(
// Topics: Gears, Parts // Topics: Gears, Parts
// See Also: rack(), ring_gear2d(), spur_gear(), spur_gear2d(), bevel_gear() // See Also: rack(), ring_gear2d(), spur_gear(), spur_gear2d(), bevel_gear()
// Usage: // Usage:
// ring_gear(circ_pitch, teeth, thickness=, [pressure_angle=], [clearance=], [backlash=], [profile_shift=]) [ATTACHMENTS]; // ring_gear(circ_pitch, teeth, thickness, [backing], [pressure_angle=], [helical=], [herringbone=], [profile_shift=], [clearance=], [backlash=]) [ATTACHMENTS];
// ring_gear(mod=, teeth=, thickness=, [pressure_angle=], [clearance=], [backlash=], [profile_shift=]) [ATTACHMENTS]; // ring_gear(mod=, teeth=, thickness=, backing=, [pressure_angle=], [helical=], [herringbone=], [profile_shift=], [clearance=], [backlash=]) [ATTACHMENTS];
// ring_gear(diam_pitch=, teeth=, thickness=, backing=, [pressure_angle=], [helical=], [herringbone=], [profile_shift=], [clearance=], [backlash=]) [ATTACHMENTS];
// Description: // Description:
// Creates a 3D involute ring gear. Normally, you should just specify the // Creates a 3D involute ring gear. Normally, you should just specify the
// first 3 parameters `circ_pitch`, `teeth`, and `thickness`, and let the rest be default values. // first 3 parameters `circ_pitch`, `teeth`, and `thickness`, and let the rest be default values.
@ -615,18 +616,20 @@ module spur_gear2d(
// Arguments: // Arguments:
// circ_pitch = The circular pitch, or distance between teeth around the pitch circle, in mm. // circ_pitch = The circular pitch, or distance between teeth around the pitch circle, in mm.
// teeth = Total number of teeth around the spur gear. // teeth = Total number of teeth around the spur gear.
// pressure_angle = Controls how straight or bulged the tooth sides are. In degrees.
// thickness = Thickness of ring gear in mm // thickness = Thickness of ring gear in mm
// backing = The width of the ring gear backing, in mm.
// pressure_angle = Controls how straight or bulged the tooth sides are. In degrees.
// --- // ---
// helical = The angle of the rack teeth away from perpendicular to the gear axis of rotation. Stretches out the tooth shapes. Used to match helical spur gear pinions. Default: 0
// herringbone = If true, and helical is set, creates a herringbone gear.
// profile_shift = Profile shift factor x for tooth profile.
// clearance = Gap between top of a tooth on one gear and bottom of valley on a meshing gear (in millimeters) // clearance = Gap between top of a tooth on one gear and bottom of valley on a meshing gear (in millimeters)
// backlash = Gap between two meshing teeth, in the direction along the circumference of the pitch circle // backlash = Gap between two meshing teeth, in the direction along the circumference of the pitch circle
// helical = The angle of the rack teeth away from perpendicular to the gear axis of rotation. Stretches out the tooth shapes. Used to match helical spur gear pinions. Default: 0
// profile_shift = Profile shift factor x.
// herringbone = If true, and helical is set, creates a herringbone gear.
// diam_pitch = The diametral pitch, or number of teeth per inch of pitch diameter. Note that the diametral pitch is a completely different thing than the pitch diameter. // diam_pitch = The diametral pitch, or number of teeth per inch of pitch diameter. Note that the diametral pitch is a completely different thing than the pitch diameter.
// mod = The metric module/modulus of the gear, or mm of pitch diameter per tooth. // mod = The metric module/modulus of the gear, or mm of pitch diameter per tooth.
// 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`
// Example: // Example:
// ring_gear(circ_pitch=5, teeth=48, thickness=10); // ring_gear(circ_pitch=5, teeth=48, thickness=10);
// Example: Adjusting Backing // Example: Adjusting Backing
@ -642,21 +645,22 @@ module spur_gear2d(
module ring_gear( module ring_gear(
circ_pitch, circ_pitch,
teeth = 50, teeth = 50,
thickness = 10,
backing = 10,
pressure_angle, pressure_angle,
helical,
herringbone = false,
profile_shift,
clearance, clearance,
backlash = 0.0, backlash = 0.0,
profile_shift,
helical,
backing = 10,
thickness = 10,
herringbone = false,
pitch, pitch,
diam_pitch, diam_pitch,
mod, mod,
slices, slices,
gear_spin = 0, gear_spin = 0,
anchor = CENTER, anchor = CENTER,
spin = 0 spin = 0,
orient = UP
) { ) {
circ_pitch = _inherit_gear_pitch(pitch, circ_pitch, diam_pitch, mod); circ_pitch = _inherit_gear_pitch(pitch, circ_pitch, diam_pitch, mod);
PA = _inherit_gear_pa(pressure_angle); PA = _inherit_gear_pa(pressure_angle);
@ -668,7 +672,7 @@ module ring_gear(
circum = 2 * PI * pr; circum = 2 * PI * pr;
twist = 360*thickness*tan(helical)/circum; twist = 360*thickness*tan(helical)/circum;
slices = default(slices, ceil(twist/360*segs(pr)+1)); slices = default(slices, ceil(twist/360*segs(pr)+1));
attachable(anchor,spin, h=thickness, r=pr) { attachable(anchor,spin,orient, h=thickness, r=pr) {
zrot(gear_spin) zrot(gear_spin)
if (herringbone) { if (herringbone) {
zflip_copy() down(0.01) zflip_copy() down(0.01)
@ -716,8 +720,9 @@ module ring_gear(
// Topics: Gears, Parts // Topics: Gears, Parts
// See Also: rack(), spur_gear(), spur_gear2d(), bevel_gear() // See Also: rack(), spur_gear(), spur_gear2d(), bevel_gear()
// Usage: // Usage:
// ring_gear2d(circ_pitch, teeth, [pressure_angle=], [clearance=], [backlash=], [profile_shift=]) [ATTACHMENTS]; // ring_gear2d(circ_pitch, teeth, [backing], [pressure_angle=], [helical=], [profile_shift=], [clearance=], [backlash=]) [ATTACHMENTS];
// ring_gear2d(mod=, teeth=, [pressure_angle=], [clearance=], [backlash=], [profile_shift=]) [ATTACHMENTS]; // ring_gear2d(mod=, teeth=, [backing=], [pressure_angle=], [helical=], [profile_shift=], [clearance=], [backlash=]) [ATTACHMENTS];
// ring_gear2d(diam_pitch=, teeth=, [backing=], [pressure_angle=], [helical=], [profile_shift=], [clearance=], [backlash=]) [ATTACHMENTS];
// Description: // Description:
// Creates a 2D involute ring gear. Normally, you should just specify the // Creates a 2D involute ring gear. Normally, you should just specify the
// first 2 parameters `circ_pitch` and `teeth`, and let the rest be default values. // first 2 parameters `circ_pitch` and `teeth`, and let the rest be default values.
@ -726,12 +731,13 @@ module ring_gear(
// Arguments: // Arguments:
// circ_pitch = The circular pitch, or distance between teeth around the pitch circle, in mm. // circ_pitch = The circular pitch, or distance between teeth around the pitch circle, in mm.
// teeth = Total number of teeth around the spur gear. // teeth = Total number of teeth around the spur gear.
// --- // backing = The width of the ring gear backing, in mm.
// pressure_angle = Controls how straight or bulged the tooth sides are. In degrees. // pressure_angle = Controls how straight or bulged the tooth sides are. In degrees.
// ---
// helical = The angle of the rack teeth away from perpendicular to the gear axis of rotation. Stretches out the tooth shapes. Used to match helical spur gear pinions. Default: 0
// profile_shift = Profile shift factor x for tooth profile.
// clearance = Gap between top of a tooth on one gear and bottom of valley on a meshing gear (in millimeters) // clearance = Gap between top of a tooth on one gear and bottom of valley on a meshing gear (in millimeters)
// backlash = Gap between two meshing teeth, in the direction along the circumference of the pitch circle // backlash = Gap between two meshing teeth, in the direction along the circumference of the pitch circle
// profile_shift = Profile shift factor x.
// helical = The angle of the rack teeth away from perpendicular to the gear axis of rotation. Stretches out the tooth shapes. Used to match helical spur gear pinions. Default: 0
// diam_pitch = The diametral pitch, or number of teeth per inch of pitch diameter. Note that the diametral pitch is a completely different thing than the pitch diameter. // diam_pitch = The diametral pitch, or number of teeth per inch of pitch diameter. Note that the diametral pitch is a completely different thing than the pitch diameter.
// mod = The metric module/modulus of the gear, or mm of pitch diameter per tooth. // mod = The metric module/modulus of the gear, or mm of pitch diameter per tooth.
// 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`
@ -745,12 +751,12 @@ module ring_gear(
module ring_gear2d( module ring_gear2d(
circ_pitch, circ_pitch,
teeth = 50, teeth = 50,
backing = 10,
pressure_angle, pressure_angle,
helical,
profile_shift,
clearance, clearance,
backlash = 0.0, backlash = 0.0,
profile_shift,
helical,
backing = 10,
pitch, pitch,
diam_pitch, diam_pitch,
mod, mod,