471 lines
13 KiB
OpenSCAD
471 lines
13 KiB
OpenSCAD
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/* 'Nut Job' nut, bolt, washer and threaded rod factory by Mike Thompson 1/12/2013, Thingiverse: mike_linus
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*
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* Licensing: This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Australia License.
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* Further information is available here - http://creativecommons.org/licenses/by-nc-sa/3.0/au/deed.en_GB
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*
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* v2 8/12/2013 - added socket head types
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* v3 2/11/2014 - adjusted wing nut algorithm for better behaviour with unusual nut sizes and added ISO262 metric references
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* v4 31/12/2014 - added optional texture to socket heads, added ability to change the number of facets for a hex head
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* and adjusted wingnut base level on certain nut sizes
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* v5 11/1/2015 - added phillips and slot drive types and improved texture handling
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* v6 21/2/2015 - added wing ratio to wingnuts
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* 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
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* v8 1/1/2017 - modified library code to remove dependence on deprecated 'assign' statement
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*
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* This script generates nuts, bolts, washers and threaded rod using the library
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* script: polyScrewThead.scad (modified/updated version polyScrewThread_r1.scad)
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* http://www.thingiverse.com/thing:8796, CC Public Domain
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*
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* Defaults are for a 8mm diameter bolts, rod, matching nuts and wing nuts that work well together
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* without cleanup or modification. Some default parameters such as the nut outer diameter are deliberately
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* altered to produce a snug fit that can still be hand tightened. This may need to be altered
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* depending on individual printer variances, slicing tools, filament etc. Suggest printing a matching
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* bolt and nut and adjusting as necessary. Note: slow print speeds, low temperatures and solid
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* fill are recommended for best results.
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*/
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module wing()
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{
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difference()
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{
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cylinder(r=wing_radius,h=3,$fn=64); //cylinder
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union()
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{
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translate([-wing_radius,-wing_radius-1,-0.5])cube([wing_radius*2,wing_radius/2,wing_radius*2]); //remove overhang so flush with base of nut
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rotate([0,0,90])translate([-wing_radius,wing_radius-1,-0.5])cube([wing_radius*2,wing_radius/2,wing_radius*2]); //remove overhangs so flush with side of nut
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}
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}
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}
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//Washer
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if (type=="washer")
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{
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difference()
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{
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cylinder(r=outer_diameter/2,h=thickness,$fn=100);
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translate([0,0,-0.1])cylinder(r=inner_diameter/2,h=thickness+0.2,$fn=100);
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}
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}
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//Socket Head Bolt
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if (type=="bolt" && head_type!="hex")
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{
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socket_screw(thread_outer_diameter,thread_step,step_shape_degrees,thread_length,resolution,countersink,head_diameter,head_height,non_thread_length,non_thread_diameter);
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}
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module phillips_base()
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{
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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]]);
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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]]);
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}
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module phillips_fillet()
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{
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union()
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{
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translate([-(drive_diameter-slot_width)/2-(slot_width/2),slot_width/2,0])rotate([90,0,0])phillips_base();
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translate([0,0,9/5*(drive_diameter-slot_width)/2])union()
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{
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inner_curve();
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rotate([0,0,90])inner_curve();
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rotate([0,0,180])inner_curve();
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rotate([0,0,270])inner_curve();
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}
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}
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}
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module inner_curve()
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{
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translate([slot_width/2,-slot_width/2,0])rotate([0,90,0])linear_fillet(9/5*(drive_diameter-slot_width)/2,drive_diameter/10);
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}
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//basic 2d profile used for fillet shape
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module profile(radius)
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{
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difference()
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{
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square(radius);
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circle(r=radius);
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}
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}
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//linear fillet for use along straight edges
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module linear_fillet(length,profile_radius)
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{
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translate([0,-profile_radius,profile_radius])rotate([0,90,0])linear_extrude(height=length,convexity=10)profile(profile_radius);
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}
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module phillips_drive()
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{
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intersection()
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{
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phillips_fillet();
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cylinder(9/5*(drive_diameter-slot_width)/2,drive_diameter/2+(slot_width/2),slot_width/2);
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}
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}
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module socket_screw(od,st,lf0,lt,rs,cs,df,hg,ntl,ntd)
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{
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ntr=od/2-(st/2)*cos(lf0)/sin(lf0);
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$fn=60;
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difference()
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{
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union()
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{
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if (head_type=="socket")
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{
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socket_head(hg,df);
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}
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if (head_type=="button")
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{
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button_head(hg,df);
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}
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if (head_type=="countersunk")
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{
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countersunk_head(hg,df);
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}
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translate([0,0,hg])
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if ( ntl == 0 )
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{
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cylinder(h=0.01, r=ntr, center=true);
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}
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else
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{
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if ( ntd == -1 )
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{
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cylinder(h=ntl+0.01, r=ntr, $fn=floor(od*PI/rs), center=false);
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}
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else if ( ntd == 0 )
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{
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union()
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{
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cylinder(h=ntl-st/2,r=od/2, $fn=floor(od*PI/rs), center=false);
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translate([0,0,ntl-st/2])
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cylinder(h=st/2,
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r1=od/2, r2=ntr,
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$fn=floor(od*PI/rs), center=false);
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}
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}
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else
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{
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cylinder(h=ntl, r=ntd/2, $fn=ntd*PI/rs, center=false);
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}
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}
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translate([0,0,ntl+hg]) screw_thread(od,st,lf0,lt,rs,cs);
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}
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//create opening for specific drive type
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if (drive_type=="socket")
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{
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cylinder(r=drive_diameter/2,h=socket_depth,$fn=socket_facets); //socket
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#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
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}
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else
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{
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if (drive_type=="phillips")
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{
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translate([0,0,-0.001])phillips_drive();
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}
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else //slot
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{
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translate([-(drive_diameter)/2,slot_width/2,-0.001])rotate([90,0,0])cube([drive_diameter,slot_depth,slot_width]);
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}
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}
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}
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}
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module socket_head(hg,df)
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{
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texture_points=2*PI*(head_diameter/2);
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texture_offset=head_diameter/18;
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texture_radius=head_diameter/24;
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rd0=df/2/sin(60);
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x0=0; x1=df/2; x2=x1+hg/2;
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y0=0; y1=hg/2; y2=hg;
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intersection()
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{
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cylinder(h=hg, r=rd0, $fn=60, center=false);
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rotate_extrude(convexity=10, $fn=6*round(df*PI/6/0.5))
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polygon([ [x0,y0],[x1,y0],[x2,y1],[x1,y2],[x0,y2] ]);
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}
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if (texture=="include") //add texture to socket head. Adjust texture density and size using texture variables above
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{
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for (i= [1:texture_points])
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{
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translate([cos(360/texture_points*i)*(head_diameter/2+texture_offset), sin(360/texture_points*i)*(head_diameter/2+texture_offset), 1 ])
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rotate([0,0,360/texture_points*i])cylinder(r=texture_radius,h=head_height*0.6,$fn=3);
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}
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}
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}
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module button_head(hg,df)
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{
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rd0=df/2/sin(60);
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x0=0; x1=df/2; x2=x1+hg/2;
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y0=0; y1=hg/2; y2=hg;
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intersection()
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{
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cylinder(h=hg, r1=drive_diameter/2 + 1, r2=rd0, $fn=60, center=false);
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rotate_extrude(convexity=10, $fn=6*round(df*PI/6/0.5))
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polygon([ [x0,y0],[x1,y0],[x2,y1],[x1,y2],[x0,y2] ]);
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}
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}
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module countersunk_head(hg,df)
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{
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rd0=df/2/sin(60);
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x0=0; x1=df/2; x2=x1+hg/2;
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y0=0; y1=hg/2; y2=hg;
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intersection()
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{
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cylinder(h=hg, r1=rd0, r2=thread_outer_diameter/2-0.5, $fn=60, center=false);
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rotate_extrude(convexity=10, $fn=6*round(df*PI/6/0.5))
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polygon([ [x0,y0],[x1,y0],[x2,y1],[x1,y2],[x0,y2] ]);
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}
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}
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/* Library included below to allow customizer functionality
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*
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* polyScrewThread_r1.scad by aubenc @ Thingiverse
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*
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* Modified by mike_mattala @ Thingiverse 1/1/2017 to remove deprecated assign
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*
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* This script contains the library modules that can be used to generate
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* threaded rods, screws and nuts.
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*
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* http://www.thingiverse.com/thing:8796
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*
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* CC Public Domain
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*/
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module screw_thread(od,st,lf0,lt,rs,cs)
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{
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or=od/2;
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ir=or-st/2*cos(lf0)/sin(lf0);
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pf=2*PI*or;
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sn=floor(pf/rs);
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lfxy=360/sn;
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ttn=round(lt/st+1);
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zt=st/sn;
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intersection()
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{
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if (cs >= -1)
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{
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thread_shape(cs,lt,or,ir,sn,st);
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}
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full_thread(ttn,st,sn,zt,lfxy,or,ir);
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}
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}
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module hex_nut(df,hg,sth,clf,cod,crs)
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{
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difference()
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{
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hex_head(hg,df);
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hex_countersink_ends(sth/2,cod,clf,crs,hg);
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screw_thread(cod,sth,clf,hg,crs,-2);
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}
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}
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module hex_screw(od,st,lf0,lt,rs,cs,df,hg,ntl,ntd)
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{
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ntr=od/2-(st/2)*cos(lf0)/sin(lf0);
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union()
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{
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hex_head(hg,df);
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translate([0,0,hg])
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if ( ntl == 0 )
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{
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cylinder(h=0.01, r=ntr, center=true);
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}
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else
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{
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if ( ntd == -1 )
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{
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cylinder(h=ntl+0.01, r=ntr, $fn=floor(od*PI/rs), center=false);
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}
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else if ( ntd == 0 )
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{
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union()
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{
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cylinder(h=ntl-st/2,
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r=od/2, $fn=floor(od*PI/rs), center=false);
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translate([0,0,ntl-st/2])
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cylinder(h=st/2,
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r1=od/2, r2=ntr,
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$fn=floor(od*PI/rs), center=false);
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}
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}
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else
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{
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cylinder(h=ntl, r=ntd/2, $fn=ntd*PI/rs, center=false);
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}
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}
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translate([0,0,ntl+hg]) screw_thread(od,st,lf0,lt,rs,cs);
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}
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}
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module hex_screw_0(od,st,lf0,lt,rs,cs,df,hg,ntl,ntd)
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{
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ntr=od/2-(st/2)*cos(lf0)/sin(lf0);
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union()
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{
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hex_head_0(hg,df);
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translate([0,0,hg])
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if ( ntl == 0 )
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{
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cylinder(h=0.01, r=ntr, center=true);
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}
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else
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{
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if ( ntd == -1 )
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{
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cylinder(h=ntl+0.01, r=ntr, $fn=floor(od*PI/rs), center=false);
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}
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else if ( ntd == 0 )
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{
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union()
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{
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cylinder(h=ntl-st/2,
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r=od/2, $fn=floor(od*PI/rs), center=false);
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translate([0,0,ntl-st/2])
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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);
|
||
|
|
}
|