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Arndt Heuvel 2024-03-04 19:04:39 +01:00
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/* 'Nut Job' nut, bolt, washer and threaded rod factory by Mike Thompson 1/12/2013, Thingiverse: mike_linus
*
* Licensing: This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Australia License.
* Further information is available here - http://creativecommons.org/licenses/by-nc-sa/3.0/au/deed.en_GB
*
* v2 8/12/2013 - added socket head types
* v3 2/11/2014 - adjusted wing nut algorithm for better behaviour with unusual nut sizes and added ISO262 metric references
* v4 31/12/2014 - added optional texture to socket heads, added ability to change the number of facets for a hex head
* and adjusted wingnut base level on certain nut sizes
* v5 11/1/2015 - added phillips and slot drive types and improved texture handling
* v6 21/2/2015 - added wing ratio to wingnuts
* v7 6/3/2016 - added extended options to control number of facets on nuts, square sockets (or any number of facets) and socket depth control
* v8 1/1/2017 - modified library code to remove dependence on deprecated 'assign' statement
*
* This script generates nuts, bolts, washers and threaded rod using the library
* script: polyScrewThead.scad (modified/updated version polyScrewThread_r1.scad)
* http://www.thingiverse.com/thing:8796, CC Public Domain
*
* Defaults are for a 8mm diameter bolts, rod, matching nuts and wing nuts that work well together
* without cleanup or modification. Some default parameters such as the nut outer diameter are deliberately
* altered to produce a snug fit that can still be hand tightened. This may need to be altered
* depending on individual printer variances, slicing tools, filament etc. Suggest printing a matching
* bolt and nut and adjusting as necessary. Note: slow print speeds, low temperatures and solid
* fill are recommended for best results.
*/
/* [Component Type] */
type = "bolt";//[nut,bolt,rod,washer]
/* [Bolt and Rod Options] */
//Head type - Hex, Socket Cap, Button Socket Cap or Countersunk Socket Cap (ignored for Rod)
head_type = "hex";//[hex,socket,button,countersunk]
//Drive type - Socket, Phillips, Slot (ignored for Hex head type and Rod)
drive_type = "socket";//[socket,phillips,slot]
//Distance between flats for the hex head or diameter for socket or button head (ignored for Rod)
head_diameter = 12;
//Height of the head (ignored for Rod)
head_height = 5;
//Diameter of drive type (ignored for Hex head and Rod)
drive_diameter = 5;
//Width of slot aperture for phillips or slot drive types
slot_width = 1;
//Depth of slot aperture for slot drive type
slot_depth = 2;
//Surface texture (socket head only)
texture = "exclude";//[include,exclude]
//Outer diameter of the thread
thread_outer_diameter = 8;
//Thread step or Pitch (2mm works well for most applications ref. ISO262: M3=0.5,M4=0.7,M5=0.8,M6=1,M8=1.25,M10=1.5)
thread_step = 2;
//Step shape degrees (45 degrees is optimised for most printers ref. ISO262: 30 degrees)
step_shape_degrees = 45;
//Length of the threaded section
thread_length = 25;
//Countersink in both ends
countersink = 2;
//Length of the non-threaded section
non_thread_length = 0;
//Diameter for the non-threaded section (-1: Same as inner diameter of the thread, 0: Same as outer diameter of the thread, value: The given value)
non_thread_diameter = 0;
/* [Nut Options] */
//Type: Normal or WingNut
nut_type = "normal";//[normal,wingnut]
//Distance between flats for the hex nut
nut_diameter = 12;
//Height of the nut
nut_height = 6;
//Outer diameter of the bolt thread to match (usually set about 1mm larger than bolt diameter to allow easy fit - adjust to personal preferences)
nut_thread_outer_diameter = 9;
//Thread step or Pitch (2mm works well for most applications ref. ISO262: M3=0.5,M4=0.7,M5=0.8,M6=1,M8=1.25,M10=1.5)
nut_thread_step = 2;
//Step shape degrees (45 degrees is optimised for most printers ref. ISO262: 30 degrees)
nut_step_shape_degrees = 45;
//Wing radius ratio. The proportional radius of the wing on the wing nut compared to the nut height value (default = 1)
wing_ratio = 1;
wing_radius=wing_ratio * nut_height;
/* [Washer Options] */
//Inner Diameter (suggest making diameter slightly larger than bolt diameter)
inner_diameter = 8;
//Outer Diameter
outer_diameter = 14;
//Thickness
thickness = 2;
/* [Extended Options] */
//Number of facets for hex head type or nut. Default is 6 for standard hex head and nut
facets = 6;
//Number of facets for hole in socket head. Default is 6 for standard hex socket
socket_facets = 6;
//Depth of hole in socket head. Default is 3.5
socket_depth = 3.5;
//Resolution (lower values for higher resolution, but may slow rendering)
resolution = 0.5;
nut_resolution = resolution;
//Hex Bolt
if (type=="bolt" && head_type=="hex")
{
hex_screw(thread_outer_diameter,thread_step,step_shape_degrees,thread_length,resolution,countersink,head_diameter,head_height,non_thread_length,non_thread_diameter);
}
//Rod
if (type=="rod")
{
hex_screw(thread_outer_diameter,thread_step,step_shape_degrees,thread_length,resolution,countersink,head_diameter,0,non_thread_length,non_thread_diameter);
}
//Hex Nut (normally slightly larger outer diameter to fit on bolt correctly)
if (type=="nut" && nut_type=="normal")
{
hex_nut(nut_diameter,nut_height,nut_thread_step,nut_step_shape_degrees,nut_thread_outer_diameter,nut_resolution);
}
//Wing Nut variation of hex nut. Cylinders added to each side of nut for easy turning - ideal for quick release applications
if (type=="nut" && nut_type=="wingnut")
{
rotate([0,0,30])hex_nut(nut_diameter,nut_height,nut_thread_step,nut_step_shape_degrees,nut_thread_outer_diameter,nut_resolution); //nut
translate([(nut_diameter/2)+wing_radius-1,1.5,wing_radius/2+1])rotate([90,0,0])wing(); //attach wing
mirror(1,0,0)translate([(nut_diameter/2)+wing_radius-1,1.5,wing_radius/2+1])rotate([90,0,0])wing(); //attach wing
}
module wing()
{
difference()
{
cylinder(r=wing_radius,h=3,$fn=64); //cylinder
union()
{
translate([-wing_radius,-wing_radius-1,-0.5])cube([wing_radius*2,wing_radius/2,wing_radius*2]); //remove overhang so flush with base of nut
rotate([0,0,90])translate([-wing_radius,wing_radius-1,-0.5])cube([wing_radius*2,wing_radius/2,wing_radius*2]); //remove overhangs so flush with side of nut
}
}
}
//Washer
if (type=="washer")
{
difference()
{
cylinder(r=outer_diameter/2,h=thickness,$fn=100);
translate([0,0,-0.1])cylinder(r=inner_diameter/2,h=thickness+0.2,$fn=100);
}
}
//Socket Head Bolt
if (type=="bolt" && head_type!="hex")
{
socket_screw(thread_outer_diameter,thread_step,step_shape_degrees,thread_length,resolution,countersink,head_diameter,head_height,non_thread_length,non_thread_diameter);
}
module phillips_base()
{
linear_extrude(slot_width)polygon(points=[[0,0],[(drive_diameter-slot_width)/2,9/5*(drive_diameter-slot_width)/2],[(drive_diameter+slot_width)/2,9/5*(drive_diameter-slot_width)/2],[drive_diameter,0]]);
translate([(drive_diameter-slot_width)/2,0,(drive_diameter+slot_width)/2])rotate([0,90,0])linear_extrude(slot_width)polygon(points=[[0,0],[(drive_diameter-slot_width)/2,9/5*(drive_diameter-slot_width)/2],[(drive_diameter+slot_width)/2,9/5*(drive_diameter-slot_width)/2],[drive_diameter,0]]);
}
module phillips_fillet()
{
union()
{
translate([-(drive_diameter-slot_width)/2-(slot_width/2),slot_width/2,0])rotate([90,0,0])phillips_base();
translate([0,0,9/5*(drive_diameter-slot_width)/2])union()
{
inner_curve();
rotate([0,0,90])inner_curve();
rotate([0,0,180])inner_curve();
rotate([0,0,270])inner_curve();
}
}
}
module inner_curve()
{
translate([slot_width/2,-slot_width/2,0])rotate([0,90,0])linear_fillet(9/5*(drive_diameter-slot_width)/2,drive_diameter/10);
}
//basic 2d profile used for fillet shape
module profile(radius)
{
difference()
{
square(radius);
circle(r=radius);
}
}
//linear fillet for use along straight edges
module linear_fillet(length,profile_radius)
{
translate([0,-profile_radius,profile_radius])rotate([0,90,0])linear_extrude(height=length,convexity=10)profile(profile_radius);
}
module phillips_drive()
{
intersection()
{
phillips_fillet();
cylinder(9/5*(drive_diameter-slot_width)/2,drive_diameter/2+(slot_width/2),slot_width/2);
}
}
module socket_screw(od,st,lf0,lt,rs,cs,df,hg,ntl,ntd)
{
ntr=od/2-(st/2)*cos(lf0)/sin(lf0);
$fn=60;
difference()
{
union()
{
if (head_type=="socket")
{
socket_head(hg,df);
}
if (head_type=="button")
{
button_head(hg,df);
}
if (head_type=="countersunk")
{
countersunk_head(hg,df);
}
translate([0,0,hg])
if ( ntl == 0 )
{
cylinder(h=0.01, r=ntr, center=true);
}
else
{
if ( ntd == -1 )
{
cylinder(h=ntl+0.01, r=ntr, $fn=floor(od*PI/rs), center=false);
}
else if ( ntd == 0 )
{
union()
{
cylinder(h=ntl-st/2,r=od/2, $fn=floor(od*PI/rs), center=false);
translate([0,0,ntl-st/2])
cylinder(h=st/2,
r1=od/2, r2=ntr,
$fn=floor(od*PI/rs), center=false);
}
}
else
{
cylinder(h=ntl, r=ntd/2, $fn=ntd*PI/rs, center=false);
}
}
translate([0,0,ntl+hg]) screw_thread(od,st,lf0,lt,rs,cs);
}
//create opening for specific drive type
if (drive_type=="socket")
{
cylinder(r=drive_diameter/2,h=socket_depth,$fn=socket_facets); //socket
#translate([0,0,socket_depth])cylinder(r1=drive_diameter/2,r2=0,h=drive_diameter/3,$fn=socket_facets); //socket tapers at base to allow printing without bridging and improve socket grip
}
else
{
if (drive_type=="phillips")
{
translate([0,0,-0.001])phillips_drive();
}
else //slot
{
translate([-(drive_diameter)/2,slot_width/2,-0.001])rotate([90,0,0])cube([drive_diameter,slot_depth,slot_width]);
}
}
}
}
module socket_head(hg,df)
{
texture_points=2*PI*(head_diameter/2);
texture_offset=head_diameter/18;
texture_radius=head_diameter/24;
rd0=df/2/sin(60);
x0=0; x1=df/2; x2=x1+hg/2;
y0=0; y1=hg/2; y2=hg;
intersection()
{
cylinder(h=hg, r=rd0, $fn=60, center=false);
rotate_extrude(convexity=10, $fn=6*round(df*PI/6/0.5))
polygon([ [x0,y0],[x1,y0],[x2,y1],[x1,y2],[x0,y2] ]);
}
if (texture=="include") //add texture to socket head. Adjust texture density and size using texture variables above
{
for (i= [1:texture_points])
{
translate([cos(360/texture_points*i)*(head_diameter/2+texture_offset), sin(360/texture_points*i)*(head_diameter/2+texture_offset), 1 ])
rotate([0,0,360/texture_points*i])cylinder(r=texture_radius,h=head_height*0.6,$fn=3);
}
}
}
module button_head(hg,df)
{
rd0=df/2/sin(60);
x0=0; x1=df/2; x2=x1+hg/2;
y0=0; y1=hg/2; y2=hg;
intersection()
{
cylinder(h=hg, r1=drive_diameter/2 + 1, r2=rd0, $fn=60, center=false);
rotate_extrude(convexity=10, $fn=6*round(df*PI/6/0.5))
polygon([ [x0,y0],[x1,y0],[x2,y1],[x1,y2],[x0,y2] ]);
}
}
module countersunk_head(hg,df)
{
rd0=df/2/sin(60);
x0=0; x1=df/2; x2=x1+hg/2;
y0=0; y1=hg/2; y2=hg;
intersection()
{
cylinder(h=hg, r1=rd0, r2=thread_outer_diameter/2-0.5, $fn=60, center=false);
rotate_extrude(convexity=10, $fn=6*round(df*PI/6/0.5))
polygon([ [x0,y0],[x1,y0],[x2,y1],[x1,y2],[x0,y2] ]);
}
}
/* Library included below to allow customizer functionality
*
* polyScrewThread_r1.scad by aubenc @ Thingiverse
*
* Modified by mike_mattala @ Thingiverse 1/1/2017 to remove deprecated assign
*
* This script contains the library modules that can be used to generate
* threaded rods, screws and nuts.
*
* http://www.thingiverse.com/thing:8796
*
* CC Public Domain
*/
module screw_thread(od,st,lf0,lt,rs,cs)
{
or=od/2;
ir=or-st/2*cos(lf0)/sin(lf0);
pf=2*PI*or;
sn=floor(pf/rs);
lfxy=360/sn;
ttn=round(lt/st+1);
zt=st/sn;
intersection()
{
if (cs >= -1)
{
thread_shape(cs,lt,or,ir,sn,st);
}
full_thread(ttn,st,sn,zt,lfxy,or,ir);
}
}
module hex_nut(df,hg,sth,clf,cod,crs)
{
difference()
{
hex_head(hg,df);
hex_countersink_ends(sth/2,cod,clf,crs,hg);
screw_thread(cod,sth,clf,hg,crs,-2);
}
}
module hex_screw(od,st,lf0,lt,rs,cs,df,hg,ntl,ntd)
{
ntr=od/2-(st/2)*cos(lf0)/sin(lf0);
union()
{
hex_head(hg,df);
translate([0,0,hg])
if ( ntl == 0 )
{
cylinder(h=0.01, r=ntr, center=true);
}
else
{
if ( ntd == -1 )
{
cylinder(h=ntl+0.01, r=ntr, $fn=floor(od*PI/rs), center=false);
}
else if ( ntd == 0 )
{
union()
{
cylinder(h=ntl-st/2,
r=od/2, $fn=floor(od*PI/rs), center=false);
translate([0,0,ntl-st/2])
cylinder(h=st/2,
r1=od/2, r2=ntr,
$fn=floor(od*PI/rs), center=false);
}
}
else
{
cylinder(h=ntl, r=ntd/2, $fn=ntd*PI/rs, center=false);
}
}
translate([0,0,ntl+hg]) screw_thread(od,st,lf0,lt,rs,cs);
}
}
module hex_screw_0(od,st,lf0,lt,rs,cs,df,hg,ntl,ntd)
{
ntr=od/2-(st/2)*cos(lf0)/sin(lf0);
union()
{
hex_head_0(hg,df);
translate([0,0,hg])
if ( ntl == 0 )
{
cylinder(h=0.01, r=ntr, center=true);
}
else
{
if ( ntd == -1 )
{
cylinder(h=ntl+0.01, r=ntr, $fn=floor(od*PI/rs), center=false);
}
else if ( ntd == 0 )
{
union()
{
cylinder(h=ntl-st/2,
r=od/2, $fn=floor(od*PI/rs), center=false);
translate([0,0,ntl-st/2])
cylinder(h=st/2,
r1=od/2, r2=ntr,
$fn=floor(od*PI/rs), center=false);
}
}
else
{
cylinder(h=ntl, r=ntd/2, $fn=ntd*PI/rs, center=false);
}
}
translate([0,0,ntl+hg]) screw_thread(od,st,lf0,lt,rs,cs);
}
}
module thread_shape(cs,lt,or,ir,sn,st)
{
if ( cs == 0 )
{
cylinder(h=lt, r=or, $fn=sn, center=false);
}
else
{
union()
{
translate([0,0,st/2])
cylinder(h=lt-st+0.005, r=or, $fn=sn, center=false);
if ( cs == -1 || cs == 2 )
{
cylinder(h=st/2, r1=ir, r2=or, $fn=sn, center=false);
}
else
{
cylinder(h=st/2, r=or, $fn=sn, center=false);
}
translate([0,0,lt-st/2])
if ( cs == 1 || cs == 2 )
{
cylinder(h=st/2, r1=or, r2=ir, $fn=sn, center=false);
}
else
{
cylinder(h=st/2, r=or, $fn=sn, center=false);
}
}
}
}
module full_thread(ttn,st,sn,zt,lfxy,or,ir)
{
if(ir >= 0.2)
{
for(i=[0:ttn-1])
{
for(j=[0:sn-1])
{
pt = [[0,0,i*st-st],
[ir*cos(j*lfxy), ir*sin(j*lfxy), i*st+j*zt-st ],
[ir*cos((j+1)*lfxy), ir*sin((j+1)*lfxy), i*st+(j+1)*zt-st ],
[0,0,i*st],
[or*cos(j*lfxy), or*sin(j*lfxy), i*st+j*zt-st/2 ],
[or*cos((j+1)*lfxy), or*sin((j+1)*lfxy), i*st+(j+1)*zt-st/2 ],
[ir*cos(j*lfxy), ir*sin(j*lfxy), i*st+j*zt ],
[ir*cos((j+1)*lfxy), ir*sin((j+1)*lfxy), i*st+(j+1)*zt ],
[0,0,i*st+st]];
polyhedron(points=pt,faces=[[1,0,3],[1,3,6],[6,3,8],[1,6,4], //changed triangles to faces (to be deprecated)
[0,1,2],[1,4,2],[2,4,5],[5,4,6],[5,6,7],[7,6,8],
[7,8,3],[0,2,3],[3,2,7],[7,2,5] ]);
}
}
}
else
{
echo("Step Degrees too agresive, the thread will not be made!!");
echo("Try to increase de value for the degrees and/or...");
echo(" decrease the pitch value and/or...");
echo(" increase the outer diameter value.");
}
}
module hex_head(hg,df)
{
rd0=df/2/sin(60);
x0=0; x1=df/2; x2=x1+hg/2;
y0=0; y1=hg/2; y2=hg;
intersection()
{
cylinder(h=hg, r=rd0, $fn=facets, center=false);
rotate_extrude(convexity=10, $fn=6*round(df*PI/6/0.5))
polygon([ [x0,y0],[x1,y0],[x2,y1],[x1,y2],[x0,y2] ]);
}
}
module hex_head_0(hg,df)
{
cylinder(h=hg, r=df/2/sin(60), $fn=6, center=false);
}
module hex_countersink_ends(chg,cod,clf,crs,hg)
{
translate([0,0,-0.1])
cylinder(h=chg+0.01,
r1=cod/2,
r2=cod/2-(chg+0.1)*cos(clf)/sin(clf),
$fn=floor(cod*PI/crs), center=false);
translate([0,0,hg-chg+0.1])
cylinder(h=chg+0.01,
r1=cod/2-(chg+0.1)*cos(clf)/sin(clf),
r2=cod/2,
$fn=floor(cod*PI/crs), center=false);
}

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