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fixes
This commit is contained in:
Adrian Mariano
parent
f92aa1f91b
commit
b584114495
1 changed files with 15 additions and 20 deletions
35
gears.scad
35
gears.scad
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@ -49,7 +49,7 @@ function _inherit_gear_pitch(fname,pitch,circ_pitch,diam_pitch,mod,warn=true) =
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circ_pitch :
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diam_pitch != undef?
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assert(is_finite(diam_pitch) && diam_pitch>0)
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pitch_value(diam_pitch=diam_pitch) :
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circular_pitch(diam_pitch=diam_pitch) :
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mod != undef?
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assert(is_finite(mod) && mod>0)
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circular_pitch(mod=mod) :
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@ -270,7 +270,7 @@ function _inherit_gear_thickness(thickness) =
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// Subsection: Ring Gears (Internal Gears)
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// A ring gear (or internal gear) is a gear where the teeth are on the inside of a circle. Such gears must be mated
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// to a regular (external) gear, which rotates around the inside.
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// Figure(2D,Med,NoAxes,VPT =[0.491171,1.07815,0.495977],VPD=292.705): A interior or ring gear (yellow) with a mating spur gear (blue)
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// Figure(2D,Med,NoAxes,VPT=[0.491171,1.07815,0.495977],VPD=292.705): A interior or ring gear (yellow) with a mating spur gear (blue)
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// teeth1=18;
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// teeth2=30;
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// ps1=undef;
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@ -581,7 +581,6 @@ function spur_gear(
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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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@ -654,7 +653,6 @@ module spur_gear(
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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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@ -1014,7 +1012,6 @@ module ring_gear(
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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(num_defined([backing,or,od,width])<=1, "Cannot define more than one of backing, or, od and width")
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assert(is_finite(gear_spin));
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@ -1307,7 +1304,6 @@ module rack(
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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(is_finite(gear_travel));
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trans_pitch = pitch / cos(helical);
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a = _adendum(pitch, profile_shift);
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@ -1388,7 +1384,6 @@ function rack(
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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(is_finite(gear_travel))
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let(
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trans_pitch = pitch / cos(helical),
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@ -1518,7 +1513,6 @@ function rack2d(
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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_finite(profile_shift) && abs(profile_shift)<1)
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assert(is_finite(gear_travel))
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assert(num_defined([width,backing,bottom])<=1, "Can define only one of width, backing and bottom")
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let(
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@ -1616,7 +1610,6 @@ module rack2d(
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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_finite(profile_shift) && abs(profile_shift)<1)
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assert(is_finite(gear_travel))
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assert(num_defined([width,backing,bottom])<=1, "Can define only one of width, backing and bottom");
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trans_pitch = pitch / cos(helical);
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@ -1964,7 +1957,7 @@ module bevel_gear(
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// pressure_angle = Controls how straight or bulged the tooth sides are. In degrees. Default: 20
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// backlash = Gap between two meshing teeth, in the direction along the circumference of the pitch circle. Default: 0
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// clearance = Clearance gap at the bottom of the inter-tooth valleys. Default: module/4
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// profile_shift = Profile shift factor x. Default: "auto"
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// profile_shift = Profile shift factor x. Default: 0
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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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@ -1977,8 +1970,8 @@ module bevel_gear(
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// Example: Left Handed
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// worm(circ_pitch=8, d=30, l=50, starts=3, left_handed=true, $fn=72);
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// Example: Called as Function
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// vnf = worm(circ_pitch=8, d=35, l=50, starts=2, left_handed=true, pressure_angle=20, $fn=72);
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// vnf_polyhedron(vnf);
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vnf = worm(circ_pitch=8, d=35, l=50, starts=2, left_handed=true, pressure_angle=20, $fn=72);
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vnf_polyhedron(vnf);
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function worm(
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circ_pitch,
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@ -1988,7 +1981,7 @@ function worm(
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pressure_angle,
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backlash=0,
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clearance,
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profile_shift="auto",
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profile_shift=0,
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diam_pitch,
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mod,
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pitch,
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@ -1999,8 +1992,7 @@ function worm(
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) =
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let(
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circ_pitch = _inherit_gear_pitch("worm()", pitch, circ_pitch, diam_pitch, mod),
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PA = _inherit_gear_pa(pressure_angle),
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profile_shift = default(profile_shift, 0)
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PA = _inherit_gear_pa(pressure_angle)
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)
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assert(is_integer(starts) && starts>0)
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assert(is_finite(l) && l>0)
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@ -2009,7 +2001,6 @@ function worm(
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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_bool(left_handed))
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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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helical = asin(starts * circ_pitch / PI / d),
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@ -2805,9 +2796,10 @@ function pitch_radius(
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// teeth = The number of teeth on the gear.
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// ---
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// clearance = If given, sets the clearance between meshing teeth. Default: module/4
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// profile_shift = Profile shift factor x. Default: 0
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// internal = If true, calculate for an internal gear.
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// profile_shift = Profile shift factor x. Default: "auto"
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// pressure_angle = Pressure angle. Default: 20
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// helical = The helical angle (from vertical) of the teeth on the gear. Default: 0
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// internal = If true, calculate for an internal gear.
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// mod = The metric module/modulus of the gear, or mm of pitch diameter per tooth.
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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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// Example:
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@ -2829,8 +2821,11 @@ function pitch_radius(
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// halign="center", valign="top");
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// }
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function outer_radius(circ_pitch, teeth, clearance, internal=false, helical=0, profile_shift=0, mod, pitch, diam_pitch) =
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let( circ_pitch = circular_pitch(pitch, mod, circ_pitch, diam_pitch) )
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function outer_radius(circ_pitch, teeth, clearance, internal=false, helical=0, profile_shift=0, pressure_angle=20, mod, pitch, diam_pitch) =
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let(
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circ_pitch = circular_pitch(pitch, mod, circ_pitch, diam_pitch),
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profile_shift = auto_profile_shift(teeth, pressure_angle, helical, profile_shift=profile_shift)
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)
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pitch_radius(circ_pitch, teeth, helical) + (
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internal
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? _dedendum(circ_pitch, clearance, profile_shift=-profile_shift)
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