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Merge pull request #1208 from BelfrySCAD/revarbat_dev
Added rounding= to rack2d()
This commit is contained in:
Revar Desmera
GitHub
commit
88c912c9bb
1 changed files with 272 additions and 105 deletions
377
gears.scad
377
gears.scad
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@ -37,11 +37,13 @@ function _inherit_gear_param(name, val, pval, dflt, invert=false) =
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: (invert?-1:1)*val;
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function _inherit_gear_pitch(pitch,circ_pitch,diam_pitch,mod) =
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function _inherit_gear_pitch(fname,pitch,circ_pitch,diam_pitch,mod,warn=true) =
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pitch != undef?
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echo("WARNING: The use of the argument pitch= in gear code is deprecated. Please use circ_pitch= instead.")
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assert(is_finite(pitch) && pitch>0)
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pitch :
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warn? echo(str(
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"WARNING: The use of the argument pitch= in ", fname,
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" is deprecated. Please use circ_pitch= instead."
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)) pitch : pitch :
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circ_pitch != undef?
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assert(is_finite(circ_pitch) && circ_pitch>0)
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circ_pitch :
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@ -260,7 +262,7 @@ function _inherit_gear_thickness(thickness) =
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function spur_gear(
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circ_pitch,
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teeth=11,
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teeth,
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thickness,
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shaft_diam = 0,
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hide = 0,
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@ -284,11 +286,25 @@ function spur_gear(
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let(
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dummy = !is_undef(interior) ? echo("In spur_gear(), the argument 'interior=' has been deprecated, and may be removed in the future. Please use 'internal=' instead."):0,
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internal = first_defined([internal,interior,false]),
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circ_pitch = _inherit_gear_pitch(pitch, circ_pitch, diam_pitch, mod),
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circ_pitch = _inherit_gear_pitch("spur_gear()", pitch, circ_pitch, diam_pitch, mod),
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PA = _inherit_gear_pa(pressure_angle),
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helical = _inherit_gear_helical(helical, invert=!internal),
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thickness = _inherit_gear_thickness(thickness),
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profile_shift = default(profile_shift, auto_profile_shift(teeth,PA)),
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profile_shift = default(profile_shift, auto_profile_shift(teeth,PA))
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)
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assert(is_integer(teeth) && teeth>3)
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assert(is_finite(thickness) && thickness>0)
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assert(is_finite(shaft_diam) && shaft_diam>=0)
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assert(is_integer(hide) && hide>=0 && hide<teeth)
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assert(is_finite(PA) && PA>=0 && PA<90, "Bad pressure_angle value.")
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assert(clearance==undef || (is_finite(clearance) && clearance>=0))
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assert(is_finite(backlash) && backlash>=0)
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assert(is_finite(helical) && abs(helical)<90)
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assert(is_bool(herringbone))
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assert(slices==undef || (is_integer(slices) && slices>0))
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assert(is_finite(profile_shift) && abs(profile_shift)<1)
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assert(is_finite(gear_spin))
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let(
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pr = pitch_radius(circ_pitch, teeth, helical),
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circum = 2 * PI * pr,
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twist = 360*thickness*tan(helical)/circum,
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@ -303,7 +319,7 @@ function spur_gear(
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backlash = backlash,
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internal = internal,
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profile_shift = profile_shift,
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hub_diam = shaft_diam
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shaft_diam = shaft_diam
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),
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rvnf = herringbone
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? zrot(twist/2, p=linear_sweep(rgn, height=thickness, twist=twist, slices=slices, center=true))
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@ -321,7 +337,7 @@ function spur_gear(
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module spur_gear(
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circ_pitch,
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teeth=11,
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teeth,
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thickness,
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shaft_diam = 0,
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hide = 0,
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@ -344,11 +360,24 @@ module spur_gear(
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) {
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dummy = !is_undef(interior) ? echo("In spur_gear(), the argument 'interior=' has been deprecated, and may be removed in the future. Please use 'internal=' instead."):0;
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internal = first_defined([internal,interior,false]);
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circ_pitch = _inherit_gear_pitch(pitch, circ_pitch, diam_pitch, mod);
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circ_pitch = _inherit_gear_pitch("spur_gear()", pitch, circ_pitch, diam_pitch, mod);
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PA = _inherit_gear_pa(pressure_angle);
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helical = _inherit_gear_helical(helical, invert=!internal);
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thickness = _inherit_gear_thickness(thickness);
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profile_shift = default(profile_shift, auto_profile_shift(teeth,PA));
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checks =
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assert(is_integer(teeth) && teeth>3)
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assert(is_finite(thickness) && thickness>0)
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assert(is_finite(shaft_diam) && shaft_diam>=0)
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assert(is_integer(hide) && hide>=0 && hide<teeth)
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assert(is_finite(PA) && PA>=0 && PA<90, "Bad pressure_angle value.")
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assert(clearance==undef || (is_finite(clearance) && clearance>=0))
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assert(is_finite(backlash) && backlash>=0)
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assert(is_finite(helical) && abs(helical)<90)
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assert(is_bool(herringbone))
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assert(is_finite(profile_shift) && abs(profile_shift)<1)
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assert(slices==undef || (is_integer(slices) && slices>0))
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assert(is_finite(gear_spin));
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pr = pitch_radius(circ_pitch, teeth, helical);
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circum = 2 * PI * pr;
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twist = 360*thickness*tan(helical)/circum;
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@ -373,7 +402,7 @@ module spur_gear(
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backlash = backlash,
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internal = internal,
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profile_shift = profile_shift,
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hub_diam = shaft_diam
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shaft_diam = shaft_diam
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);
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}
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} else {
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@ -393,7 +422,7 @@ module spur_gear(
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backlash = backlash,
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internal = internal,
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profile_shift = profile_shift,
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hub_diam = shaft_diam
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shaft_diam = shaft_diam
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);
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}
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}
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@ -440,17 +469,17 @@ module spur_gear(
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// 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
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// internal = If true, create a mask for difference()ing from something else.
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// profile_shift = Profile shift factor x.
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// hub_diam = If given, the diameter of the central hub hole.
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// shaft_diam = If given, the diameter of the central shaft hole.
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// 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.
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// mod = The metric module/modulus of the gear, or mm of pitch diameter per tooth.
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// anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#subsection-anchor). Default: `CENTER`
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// spin = Rotate this many degrees around the Z axis after anchor. See [spin](attachments.scad#subsection-spin). Default: `0`
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// Example(2D): Typical Gear Shape
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// spur_gear2d(circ_pitch=5, teeth=20, hub_diam=5);
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// spur_gear2d(circ_pitch=5, teeth=20, shaft_diam=5);
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// Example(2D): By Metric Module
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// spur_gear2d(mod=2, teeth=20, hub_diam=5);
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// spur_gear2d(mod=2, teeth=20, shaft_diam=5);
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// Example(2D): By Imperial Gear Pitch
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// spur_gear2d(diam_pitch=10, teeth=20, hub_diam=5);
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// spur_gear2d(diam_pitch=10, teeth=20, shaft_diam=5);
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// Example(2D): Lower Pressure Angle
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// spur_gear2d(circ_pitch=5, teeth=20, pressure_angle=14);
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// Example(2D): Partial Gear
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@ -462,7 +491,7 @@ module spur_gear(
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// pr = pitch_radius(circ_pitch,teeth);
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// mr = mesh_radius(circ_pitch,teeth,profile_shift=profile_shift);
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// back(mr) {
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// spur_gear2d(circ_pitch, teeth, hub_diam=shaft, profile_shift=profile_shift);
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// spur_gear2d(circ_pitch, teeth, shaft_diam=shaft, profile_shift=profile_shift);
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// up(0.1) color("black")
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// dashed_stroke(circle(r=pr), width=strokewidth, closed=true);
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// }
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@ -500,12 +529,12 @@ module spur_gear(
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// teeth=cteeth,
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// pressure_angle=pa);
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// Example(2D): Called as a Function
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// rgn = spur_gear2d(circ_pitch=8, teeth=16, hub_diam=5);
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// rgn = spur_gear2d(circ_pitch=8, teeth=16, shaft_diam=5);
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// region(rgn);
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function spur_gear2d(
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circ_pitch,
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teeth = 11,
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teeth,
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hide = 0,
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pressure_angle,
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clearance,
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@ -514,7 +543,7 @@ function spur_gear2d(
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interior,
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profile_shift,
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helical,
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hub_diam,
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shaft_diam = 0,
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pitch,
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diam_pitch,
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mod,
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@ -522,39 +551,50 @@ function spur_gear2d(
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anchor = CENTER,
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spin = 0
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) = let(
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dummy = !is_undef(interior) ? echo("In spur_gear2d(), the argument 'interior=' has been deprecated, and may be removed in the future. Please use 'internal=' instead."):0,
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internal = first_defined([internal,interior,false]),
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circ_pitch = _inherit_gear_pitch(pitch, circ_pitch, diam_pitch, mod),
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PA = _inherit_gear_pa(pressure_angle),
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helical = _inherit_gear_helical(helical, invert=!internal),
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profile_shift = default(profile_shift, auto_profile_shift(teeth,PA)),
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pr = pitch_radius(circ_pitch, teeth, helical=helical),
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tooth = _gear_tooth_profile(
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circ_pitch=circ_pitch,
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teeth=teeth,
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pressure_angle=PA,
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clearance=clearance,
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backlash=backlash,
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profile_shift=profile_shift,
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helical=helical,
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internal=internal
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),
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perim = [
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for (i = [0:1:teeth-1-hide])
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each zrot(-i*360/teeth+gear_spin, p=tooth),
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if (hide>0) [0,0],
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],
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rgn = [
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list_unwrap(deduplicate(perim)),
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if (is_finite(hub_diam) && hub_diam>0 && !hide)
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reverse(circle(d=hub_diam)),
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]
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) reorient(anchor,spin, two_d=true, r=pr, p=rgn);
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dummy = !is_undef(interior) ? echo("In spur_gear2d(), the argument 'interior=' has been deprecated, and may be removed in the future. Please use 'internal=' instead."):0,
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internal = first_defined([internal,interior,false]),
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circ_pitch = _inherit_gear_pitch("spur_gear2d()", pitch, circ_pitch, diam_pitch, mod),
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PA = _inherit_gear_pa(pressure_angle),
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helical = _inherit_gear_helical(helical, invert=!internal),
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profile_shift = default(profile_shift, auto_profile_shift(teeth,PA))
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)
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assert(is_integer(teeth) && teeth>3)
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assert(is_finite(shaft_diam) && shaft_diam>=0)
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assert(is_integer(hide) && hide>=0 && hide<teeth)
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assert(is_finite(PA) && PA>=0 && PA<90, "Bad pressure_angle value.")
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assert(clearance==undef || (is_finite(clearance) && clearance>=0))
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assert(is_finite(backlash) && backlash>=0)
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assert(is_finite(profile_shift) && abs(profile_shift)<1)
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assert(is_finite(helical) && abs(helical)<90)
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assert(is_finite(gear_spin))
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let(
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pr = pitch_radius(circ_pitch, teeth, helical=helical),
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tooth = _gear_tooth_profile(
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circ_pitch=circ_pitch,
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teeth=teeth,
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pressure_angle=PA,
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clearance=clearance,
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backlash=backlash,
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profile_shift=profile_shift,
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helical=helical,
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internal=internal
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),
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perim = [
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for (i = [0:1:teeth-1-hide])
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each zrot(-i*360/teeth+gear_spin, p=tooth),
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if (hide>0) [0,0],
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],
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rgn = [
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list_unwrap(deduplicate(perim)),
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if (shaft_diam>0 && !hide)
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reverse(circle(d=shaft_diam)),
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]
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) reorient(anchor,spin, two_d=true, r=pr, p=rgn);
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module spur_gear2d(
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circ_pitch,
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teeth = 11,
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teeth,
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hide = 0,
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pressure_angle,
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clearance,
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@ -563,7 +603,7 @@ module spur_gear2d(
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interior,
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profile_shift,
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helical,
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hub_diam=0,
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shaft_diam = 0,
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pitch,
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diam_pitch,
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mod,
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@ -573,10 +613,20 @@ module spur_gear2d(
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) {
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dummy = !is_undef(interior) ? echo("In spur_gear2d(), the argument 'interior=' has been deprecated, and may be removed in the future. Please use 'internal=' instead."):0;
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internal = first_defined([internal,interior,false]);
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circ_pitch = _inherit_gear_pitch(pitch, circ_pitch, diam_pitch, mod);
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circ_pitch = _inherit_gear_pitch("spur_gear2d()", pitch, circ_pitch, diam_pitch, mod);
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PA = _inherit_gear_pa(pressure_angle);
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helical = _inherit_gear_helical(helical, invert=!internal);
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profile_shift = default(profile_shift, auto_profile_shift(teeth,PA));
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checks =
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assert(is_integer(teeth) && teeth>3)
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assert(is_finite(shaft_diam) && shaft_diam>=0)
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assert(is_integer(hide) && hide>=0 && hide<teeth)
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assert(is_finite(PA) && PA>=0 && PA<90, "Bad pressure_angle value.")
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assert(clearance==undef || (is_finite(clearance) && clearance>=0))
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assert(is_finite(backlash) && backlash>=0)
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assert(is_finite(profile_shift) && abs(profile_shift)<1)
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assert(is_finite(helical) && abs(helical)<90)
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assert(is_finite(gear_spin));
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rgn = spur_gear2d(
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circ_pitch = circ_pitch,
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teeth = teeth,
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@ -587,7 +637,7 @@ module spur_gear2d(
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backlash = backlash,
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profile_shift = profile_shift,
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internal = internal,
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hub_diam = hub_diam
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shaft_diam = shaft_diam
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);
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pr = pitch_radius(circ_pitch, teeth, helical=helical);
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attachable(anchor,spin, two_d=true, r=pr) {
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@ -651,7 +701,7 @@ module spur_gear2d(
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module ring_gear(
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circ_pitch,
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teeth = 50,
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teeth,
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thickness = 10,
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backing = 10,
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pressure_angle,
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@ -669,11 +719,23 @@ module ring_gear(
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spin = 0,
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orient = UP
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) {
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circ_pitch = _inherit_gear_pitch(pitch, circ_pitch, diam_pitch, mod);
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circ_pitch = _inherit_gear_pitch("ring_gear()",pitch, circ_pitch, diam_pitch, mod);
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PA = _inherit_gear_pa(pressure_angle);
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helical = _inherit_gear_helical(helical);
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thickness = _inherit_gear_thickness(thickness);
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profile_shift = default(profile_shift, auto_profile_shift(teeth,PA));
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checks =
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assert(is_integer(teeth) && teeth>3)
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assert(is_finite(thickness) && thickness>0)
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assert(is_finite(backing) && backing>0)
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assert(is_finite(PA) && PA>=0 && PA<90, "Bad pressure_angle value.")
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assert(is_finite(helical) && abs(helical)<90)
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assert(is_bool(herringbone))
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assert(clearance==undef || (is_finite(clearance) && clearance>=0))
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assert(is_finite(backlash) && backlash>=0)
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assert(is_finite(profile_shift) && abs(profile_shift)<1)
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assert(slices==undef || (is_integer(slices) && slices>0))
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assert(is_finite(gear_spin));
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pr = pitch_radius(circ_pitch, teeth, helical=helical);
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ar = outer_radius(circ_pitch, teeth, helical=helical, profile_shift=profile_shift, internal=true);
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circum = 2 * PI * pr;
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@ -757,7 +819,7 @@ module ring_gear(
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// back(pr1-pr2) spur_gear2d(circ_pitch=circ_pitch, teeth=teeth2);
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module ring_gear2d(
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circ_pitch,
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teeth = 50,
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teeth,
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backing = 10,
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pressure_angle,
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helical,
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@ -771,10 +833,19 @@ module ring_gear2d(
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anchor = CENTER,
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spin = 0
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) {
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circ_pitch = _inherit_gear_pitch(pitch, circ_pitch, diam_pitch, mod);
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circ_pitch = _inherit_gear_pitch("ring_gear2d()",pitch, circ_pitch, diam_pitch, mod);
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PA = _inherit_gear_pa(pressure_angle);
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helical = _inherit_gear_helical(helical);
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profile_shift = default(profile_shift, auto_profile_shift(teeth,PA));
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checks =
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assert(is_integer(teeth) && teeth>3)
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assert(is_finite(backing) && backing>0)
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assert(is_finite(PA) && PA>=0 && PA<90, "Bad pressure_angle value.")
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assert(is_finite(helical) && abs(helical)<90)
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assert(clearance==undef || (is_finite(clearance) && clearance>=0))
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assert(is_finite(backlash) && backlash>=0)
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assert(is_finite(profile_shift) && abs(profile_shift)<1)
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assert(is_finite(gear_spin));
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pr = pitch_radius(circ_pitch, teeth, helical=helical);
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ar = outer_radius(circ_pitch, teeth, helical=helical, profile_shift=profile_shift, internal=true);
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attachable(anchor,spin, two_d=true, r=pr) {
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@ -865,7 +936,7 @@ module ring_gear2d(
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module rack(
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pitch,
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teeth = 20,
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teeth,
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thickness,
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height = 10,
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pressure_angle,
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@ -881,10 +952,21 @@ module rack(
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spin = 0,
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orient = UP
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) {
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pitch = _inherit_gear_pitch(pitch, circ_pitch, diam_pitch, mod);
|
||||
pitch = _inherit_gear_pitch("rack()",pitch, circ_pitch, diam_pitch, mod, warn=false);
|
||||
PA = _inherit_gear_pa(pressure_angle);
|
||||
helical = _inherit_gear_helical(helical);
|
||||
thickness = _inherit_gear_thickness(thickness);
|
||||
checks=
|
||||
assert(is_integer(teeth) && teeth>0)
|
||||
assert(is_finite(thickness) && thickness>0)
|
||||
assert(is_finite(height) && height>0)
|
||||
assert(is_finite(PA) && PA>=0 && PA<90, "Bad pressure_angle value.")
|
||||
assert(clearance==undef || (is_finite(clearance) && clearance>=0))
|
||||
assert(is_finite(backlash) && backlash>=0)
|
||||
assert(is_finite(helical) && abs(helical)<90)
|
||||
//assert(is_bool(herringbone))
|
||||
assert(is_finite(profile_shift) && abs(profile_shift)<1)
|
||||
assert(is_finite(gear_travel));
|
||||
trans_pitch = pitch / cos(helical);
|
||||
a = _adendum(pitch, profile_shift);
|
||||
d = _dedendum(pitch, clearance, profile_shift);
|
||||
|
|
@ -925,7 +1007,7 @@ module rack(
|
|||
|
||||
function rack(
|
||||
pitch,
|
||||
teeth = 20,
|
||||
teeth,
|
||||
thickness,
|
||||
height = 10,
|
||||
pressure_angle,
|
||||
|
|
@ -942,10 +1024,22 @@ function rack(
|
|||
orient = UP
|
||||
) =
|
||||
let(
|
||||
pitch = _inherit_gear_pitch(pitch, circ_pitch, diam_pitch, mod),
|
||||
pitch = _inherit_gear_pitch("rack()",pitch, circ_pitch, diam_pitch, mod, warn=false),
|
||||
PA = _inherit_gear_pa(pressure_angle),
|
||||
helical = _inherit_gear_helical(helical),
|
||||
thickness = _inherit_gear_thickness(thickness),
|
||||
thickness = _inherit_gear_thickness(thickness)
|
||||
)
|
||||
assert(is_integer(teeth) && teeth>0)
|
||||
assert(is_finite(thickness) && thickness>0)
|
||||
assert(is_finite(height) && height>0)
|
||||
assert(is_finite(PA) && PA>=0 && PA<90, "Bad pressure_angle value.")
|
||||
assert(clearance==undef || (is_finite(clearance) && clearance>=0))
|
||||
assert(is_finite(backlash) && backlash>=0)
|
||||
assert(is_finite(helical) && abs(helical)<90)
|
||||
//assert(is_bool(herringbone))
|
||||
assert(is_finite(profile_shift) && abs(profile_shift)<1)
|
||||
assert(is_finite(gear_travel))
|
||||
let(
|
||||
trans_pitch = pitch / cos(helical),
|
||||
a = _adendum(pitch, profile_shift),
|
||||
d = _dedendum(pitch, clearance, profile_shift),
|
||||
|
|
@ -1009,7 +1103,9 @@ function rack(
|
|||
// backlash = Gap between two meshing teeth, in the direction along the circumference of the pitch circle
|
||||
// clearance = Clearance gap at the bottom of the inter-tooth valleys.
|
||||
// helical = The angle of the rack teeth away from perpendicular to the rack length. Stretches out the tooth shapes. Used to match helical spur gear pinions. Default: 0
|
||||
// profile_shift = Profile shift factor x.
|
||||
// profile_shift = Profile shift factor x for tooth shape.
|
||||
// gear_travel = The distance the rack should be moved by linearly. Default: 0
|
||||
// rounding = If true, rack tips and valleys are slightly rounded. Default: true
|
||||
// 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.
|
||||
// anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#subsection-anchor). Default: `CENTER`
|
||||
|
|
@ -1029,7 +1125,7 @@ function rack(
|
|||
|
||||
function rack2d(
|
||||
pitch,
|
||||
teeth = 20,
|
||||
teeth,
|
||||
height = 10,
|
||||
pressure_angle,
|
||||
backlash = 0,
|
||||
|
|
@ -1040,16 +1136,27 @@ function rack2d(
|
|||
diam_pitch,
|
||||
mod,
|
||||
gear_travel = 0,
|
||||
rounding = true,
|
||||
anchor = CENTER,
|
||||
spin = 0
|
||||
) = let(
|
||||
pitch = _inherit_gear_pitch(pitch, circ_pitch, diam_pitch, mod),
|
||||
pitch = _inherit_gear_pitch("rack2d()",pitch, circ_pitch, diam_pitch, mod, warn=false),
|
||||
PA = _inherit_gear_pa(pressure_angle),
|
||||
helical = _inherit_gear_helical(helical),
|
||||
helical = _inherit_gear_helical(helical)
|
||||
)
|
||||
assert(is_integer(teeth) && teeth>0)
|
||||
assert(is_finite(height) && height>0)
|
||||
assert(is_finite(PA) && PA>=0 && PA<90, "Bad pressure_angle value.")
|
||||
assert(clearance==undef || (is_finite(clearance) && clearance>=0))
|
||||
assert(is_finite(backlash) && backlash>=0)
|
||||
assert(is_finite(helical) && abs(helical)<90)
|
||||
assert(is_finite(profile_shift) && abs(profile_shift)<1)
|
||||
assert(is_finite(gear_travel))
|
||||
let(
|
||||
adendum = _adendum(pitch, profile_shift),
|
||||
dedendum = _dedendum(pitch, clearance, profile_shift)
|
||||
)
|
||||
assert(dedendum < height)
|
||||
assert(dedendum < height, "height= is not large enough.")
|
||||
let(
|
||||
trans_pitch = pitch / cos(helical),
|
||||
trans_pa = atan(tan(PA)/cos(helical)),
|
||||
|
|
@ -1057,29 +1164,30 @@ function rack2d(
|
|||
l = teeth * trans_pitch,
|
||||
ax = ang_adj_to_opp(trans_pa, adendum),
|
||||
dx = ang_adj_to_opp(trans_pa, dedendum),
|
||||
clear = dedendum - adendum,
|
||||
poff = tthick/2 - backlash,
|
||||
tooth = [
|
||||
[-trans_pitch/2, -dedendum],
|
||||
each arc(n=4, r=dedendum-adendum, corner=[
|
||||
if (rounding) each arc(n=4, r=clear, corner=[
|
||||
[-trans_pitch/2, -dedendum],
|
||||
[-poff-dx, -dedendum],
|
||||
[-poff+ax, +adendum],
|
||||
]),
|
||||
each arc(n=4, r=trans_pitch/16, corner=[
|
||||
[-poff-dx, -dedendum],
|
||||
[-poff+ax, +adendum],
|
||||
[+poff-ax, +adendum],
|
||||
]),
|
||||
each arc(n=4, r=trans_pitch/16, corner=[
|
||||
[-poff+ax, +adendum],
|
||||
[+poff-ax, +adendum],
|
||||
[+poff+dx, -dedendum],
|
||||
]),
|
||||
each arc(n=4, r=dedendum-adendum, corner=[
|
||||
[+poff-ax, +adendum],
|
||||
[+poff+dx, -dedendum],
|
||||
[-poff-dx, -dedendum],
|
||||
[-poff+ax, +adendum],
|
||||
]) else [-poff-dx, -dedendum],
|
||||
if (rounding) each arc(n=4, r=trans_pitch/16, corner=[
|
||||
[-poff-dx, -dedendum],
|
||||
[-poff+ax, +adendum],
|
||||
[+poff-ax, +adendum],
|
||||
]) else [-poff+ax, +adendum],
|
||||
if (rounding) each arc(n=4, r=trans_pitch/16, corner=[
|
||||
[-poff+ax, +adendum],
|
||||
[+poff-ax, +adendum],
|
||||
[+poff+dx, -dedendum],
|
||||
]) else [+poff-ax, +adendum],
|
||||
if (rounding) each arc(n=4, r=clear, corner=[
|
||||
[+poff-ax, +adendum],
|
||||
[+poff+dx, -dedendum],
|
||||
[+trans_pitch/2, -dedendum],
|
||||
]),
|
||||
]) else [+poff+dx, -dedendum],
|
||||
[+trans_pitch/2, -dedendum],
|
||||
],
|
||||
path2 = [
|
||||
|
|
@ -1106,7 +1214,7 @@ function rack2d(
|
|||
|
||||
module rack2d(
|
||||
pitch,
|
||||
teeth = 20,
|
||||
teeth,
|
||||
height = 10,
|
||||
pressure_angle,
|
||||
backlash = 0.0,
|
||||
|
|
@ -1120,9 +1228,18 @@ module rack2d(
|
|||
anchor = CENTER,
|
||||
spin = 0
|
||||
) {
|
||||
pitch = _inherit_gear_pitch(pitch, circ_pitch, diam_pitch, mod);
|
||||
pitch = _inherit_gear_pitch("rack2d()",pitch, circ_pitch, diam_pitch, mod, warn=false);
|
||||
PA = _inherit_gear_pa(pressure_angle);
|
||||
helical = _inherit_gear_helical(helical);
|
||||
checks =
|
||||
assert(is_integer(teeth) && teeth>0)
|
||||
assert(is_finite(height) && height>0)
|
||||
assert(is_finite(PA) && PA>=0 && PA<90, "Bad pressure_angle value.")
|
||||
assert(clearance==undef || (is_finite(clearance) && clearance>=0))
|
||||
assert(is_finite(backlash) && backlash>=0)
|
||||
assert(is_finite(helical) && abs(helical)<90)
|
||||
assert(is_finite(profile_shift) && abs(profile_shift)<1)
|
||||
assert(is_finite(gear_travel));
|
||||
trans_pitch = pitch / cos(helical);
|
||||
a = _adendum(pitch, profile_shift);
|
||||
d = _dedendum(pitch, clearance, profile_shift);
|
||||
|
|
@ -1253,8 +1370,8 @@ module rack2d(
|
|||
// }
|
||||
|
||||
function bevel_gear(
|
||||
circ_pitch = 5,
|
||||
teeth = 20,
|
||||
circ_pitch,
|
||||
teeth,
|
||||
face_width = 10,
|
||||
pitch_angle = 45,
|
||||
mate_teeth,
|
||||
|
|
@ -1277,7 +1394,7 @@ function bevel_gear(
|
|||
) = let(
|
||||
dummy = !is_undef(interior) ? echo("In bevel_gear(), the argument 'interior=' has been deprecated, and may be removed in the future. Please use 'internal=' instead."):0,
|
||||
internal = first_defined([internal,interior,false]),
|
||||
circ_pitch = _inherit_gear_pitch(pitch, circ_pitch, diam_pitch, mod),
|
||||
circ_pitch = _inherit_gear_pitch("bevel_gear()",pitch, circ_pitch, diam_pitch, mod),
|
||||
PA = _inherit_gear_pa(pressure_angle),
|
||||
spiral_angle = _inherit_gear_helical(spiral_angle, invert=!internal),
|
||||
face_width = _inherit_gear_thickness(face_width),
|
||||
|
|
@ -1366,8 +1483,8 @@ function bevel_gear(
|
|||
|
||||
|
||||
module bevel_gear(
|
||||
circ_pitch = 5,
|
||||
teeth = 20,
|
||||
circ_pitch,
|
||||
teeth,
|
||||
face_width = 10,
|
||||
pitch_angle = 45,
|
||||
mate_teeth,
|
||||
|
|
@ -1390,7 +1507,7 @@ module bevel_gear(
|
|||
) {
|
||||
dummy = !is_undef(interior) ? echo("In bevel_gear(), the argument 'interior=' has been deprecated, and may be removed in the future. Please use 'internal=' instead."):0;
|
||||
internal = first_defined([internal,interior,false]);
|
||||
circ_pitch = _inherit_gear_pitch(pitch, circ_pitch, diam_pitch, mod);
|
||||
circ_pitch = _inherit_gear_pitch("bevel_gear()",pitch, circ_pitch, diam_pitch, mod);
|
||||
PA = _inherit_gear_pa(pressure_angle);
|
||||
spiral_angle = _inherit_gear_helical(spiral_angle, invert=!internal);
|
||||
face_width = _inherit_gear_thickness(face_width);
|
||||
|
|
@ -1491,9 +1608,20 @@ function worm(
|
|||
orient=UP
|
||||
) =
|
||||
let(
|
||||
circ_pitch = _inherit_gear_pitch(pitch, circ_pitch, diam_pitch, mod),
|
||||
circ_pitch = _inherit_gear_pitch("worm()", pitch, circ_pitch, diam_pitch, mod),
|
||||
PA = _inherit_gear_pa(pressure_angle),
|
||||
profile_shift = default(profile_shift, 0),
|
||||
profile_shift = default(profile_shift, 0)
|
||||
)
|
||||
assert(is_integer(starts) && starts>0)
|
||||
assert(is_finite(l) && l>0)
|
||||
//assert(is_finite(shaft_diam) && shaft_diam>=0)
|
||||
assert(is_finite(PA) && PA>=0 && PA<90, "Bad pressure_angle value.")
|
||||
assert(clearance==undef || (is_finite(clearance) && clearance>=0))
|
||||
assert(is_finite(backlash) && backlash>=0)
|
||||
assert(is_bool(left_handed))
|
||||
assert(is_finite(profile_shift) && abs(profile_shift)<1)
|
||||
//assert(is_finite(gear_spin))
|
||||
let(
|
||||
helical = asin(starts * circ_pitch / PI / d),
|
||||
trans_pitch = circ_pitch / cos(helical),
|
||||
tooth = xflip(
|
||||
|
|
@ -1549,9 +1677,19 @@ module worm(
|
|||
spin=0,
|
||||
orient=UP
|
||||
) {
|
||||
circ_pitch = _inherit_gear_pitch(pitch, circ_pitch, diam_pitch, mod);
|
||||
circ_pitch = _inherit_gear_pitch("worm()", pitch, circ_pitch, diam_pitch, mod);
|
||||
PA = _inherit_gear_pa(pressure_angle);
|
||||
profile_shift = default(profile_shift, auto_profile_shift(starts,PA));
|
||||
checks =
|
||||
assert(is_integer(starts) && starts>0)
|
||||
assert(is_finite(l) && l>0)
|
||||
//assert(is_finite(shaft_diam) && shaft_diam>=0)
|
||||
assert(is_finite(PA) && PA>=0 && PA<90, "Bad pressure_angle value.")
|
||||
assert(clearance==undef || (is_finite(clearance) && clearance>=0))
|
||||
assert(is_finite(backlash) && backlash>=0)
|
||||
assert(is_bool(left_handed))
|
||||
assert(is_finite(gear_spin))
|
||||
assert(is_finite(profile_shift) && abs(profile_shift)<1);
|
||||
vnf = worm(
|
||||
circ_pitch=circ_pitch,
|
||||
starts=starts,
|
||||
|
|
@ -1644,8 +1782,8 @@ module worm(
|
|||
|
||||
function worm_gear(
|
||||
circ_pitch,
|
||||
teeth = 36,
|
||||
worm_diam = 30,
|
||||
teeth,
|
||||
worm_diam,
|
||||
worm_starts = 1,
|
||||
worm_arc = 60,
|
||||
crowning = 0.1,
|
||||
|
|
@ -1665,9 +1803,24 @@ function worm_gear(
|
|||
) =
|
||||
assert(worm_arc >= 10 && worm_arc <= 60)
|
||||
let(
|
||||
circ_pitch = _inherit_gear_pitch(pitch, circ_pitch, diam_pitch, mod),
|
||||
circ_pitch = _inherit_gear_pitch("worm_gear()", pitch, circ_pitch, diam_pitch, mod),
|
||||
PA = _inherit_gear_pa(pressure_angle),
|
||||
profile_shift = default(profile_shift, auto_profile_shift(teeth,PA)),
|
||||
profile_shift = default(profile_shift, auto_profile_shift(teeth,PA))
|
||||
)
|
||||
assert(is_integer(teeth) && teeth>10)
|
||||
assert(is_finite(worm_diam) && worm_diam>0)
|
||||
assert(is_integer(worm_starts) && worm_starts>0)
|
||||
assert(is_finite(worm_arc) && worm_arc>0 && worm_arc<90)
|
||||
assert(is_finite(crowning) && crowning>=0)
|
||||
assert(is_bool(left_handed))
|
||||
assert(is_finite(PA) && PA>=0 && PA<90, "Bad pressure_angle value.")
|
||||
assert(clearance==undef || (is_finite(clearance) && clearance>=0))
|
||||
assert(is_finite(backlash) && backlash>=0)
|
||||
//assert(is_finite(shaft_diam) && shaft_diam>=0)
|
||||
assert(slices==undef || (is_integer(slices) && slices>0))
|
||||
assert(is_finite(profile_shift) && abs(profile_shift)<1)
|
||||
assert(is_finite(gear_spin))
|
||||
let(
|
||||
helical = asin(worm_starts * circ_pitch / PI / worm_diam),
|
||||
pr = pitch_radius(circ_pitch, teeth, helical),
|
||||
hob_rad = worm_diam / 2 + crowning,
|
||||
|
|
@ -1739,29 +1892,43 @@ function worm_gear(
|
|||
|
||||
module worm_gear(
|
||||
circ_pitch,
|
||||
teeth = 36,
|
||||
worm_diam = 30,
|
||||
teeth,
|
||||
worm_diam,
|
||||
worm_starts = 1,
|
||||
worm_arc = 60,
|
||||
crowning = 0.1,
|
||||
left_handed = false,
|
||||
pressure_angle,
|
||||
backlash = 0,
|
||||
slices = 10,
|
||||
clearance,
|
||||
backlash = 0,
|
||||
shaft_diam = 0,
|
||||
slices = 10,
|
||||
profile_shift,
|
||||
gear_spin=0,
|
||||
pitch,
|
||||
diam_pitch,
|
||||
mod,
|
||||
shaft_diam = 0,
|
||||
anchor = CENTER,
|
||||
spin = 0,
|
||||
orient = UP
|
||||
) {
|
||||
circ_pitch = _inherit_gear_pitch(pitch, circ_pitch, diam_pitch, mod);
|
||||
circ_pitch = _inherit_gear_pitch("worm_gear()", pitch, circ_pitch, diam_pitch, mod);
|
||||
PA = _inherit_gear_pa(pressure_angle);
|
||||
profile_shift = default(profile_shift, auto_profile_shift(teeth,PA));
|
||||
checks =
|
||||
assert(is_integer(teeth) && teeth>10)
|
||||
assert(is_finite(worm_diam) && worm_diam>0)
|
||||
assert(is_integer(worm_starts) && worm_starts>0)
|
||||
assert(is_finite(worm_arc) && worm_arc>0 && worm_arc<90)
|
||||
assert(is_finite(crowning) && crowning>=0)
|
||||
assert(is_bool(left_handed))
|
||||
assert(is_finite(PA) && PA>=0 && PA<90, "Bad pressure_angle value.")
|
||||
assert(clearance==undef || (is_finite(clearance) && clearance>=0))
|
||||
assert(is_finite(backlash) && backlash>=0)
|
||||
assert(is_finite(shaft_diam) && shaft_diam>=0)
|
||||
assert(slices==undef || (is_integer(slices) && slices>0))
|
||||
assert(is_finite(profile_shift) && abs(profile_shift)<1)
|
||||
assert(is_finite(gear_spin));
|
||||
helical = asin(worm_starts * circ_pitch / PI / worm_diam);
|
||||
pr = pitch_radius(circ_pitch, teeth, helical);
|
||||
vnf = worm_gear(
|
||||
|
|
@ -2253,7 +2420,7 @@ function pitch_radius(
|
|||
// halign="center", valign="top");
|
||||
// }
|
||||
|
||||
function outer_radius(circ_pitch=5, teeth=11, clearance, internal=false, helical=0, profile_shift=0, mod, pitch, diam_pitch) =
|
||||
function outer_radius(circ_pitch, teeth, clearance, internal=false, helical=0, profile_shift=0, mod, pitch, diam_pitch) =
|
||||
let( circ_pitch = circular_pitch(pitch, mod, circ_pitch, diam_pitch) )
|
||||
pitch_radius(circ_pitch, teeth, helical) + (
|
||||
internal
|
||||
|
|
|
|||
Loading…
Reference in a new issue