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Revising metric_bolts to be centered

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Greyscale 2021-10-17 21:21:17 +02:00
parent 9d7a52b24d
commit 0ed0f10a81
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1 changed files with 39 additions and 18 deletions
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metric_bolts.scad
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@ -1,17 +1,26 @@
capSizeMSizeMultiplier = 1.66*1.01;
printingKerfMM = 0.6;
circleFacets = 60;
boltColour = "LightSkyBlue";
boltClearanceColour = "LightSteelBlue";
module metricBoltHex(mSize, structural=false, recessNut=0, chamfer=false){ module metricBoltHex(mSize, structural=false, recessNut=0, chamfer=false){
// Hex diameter = mSize * 1.8, (or 2.0 if structural // Hex diameter = mSize * 1.8, (or 2.0 if structural
// We add 1% to make the hex slip in better // We add 1% to make the hex slip in better
hexDiameter = mSize * (structural?2.0:1.8) * 1.01; hexDiameter = (mSize * (structural?2.0:1.8) * 1.01) + printingKerfMM;
color(boltColour)
translate([0,0,(mSize*0.7)/2]) translate([0,0,(mSize*0.7)/2])
cylinder(d=hexDiameter,h=mSize * 0.7, $fn=6, center=true); cylinder(d=hexDiameter,h=mSize * 0.7, $fn=6, center=true);
if(recessNut > 0){ if(recessNut > 0){
color(boltClearanceColour)
translate([0,0,(recessNut/2)*-1]) translate([0,0,(recessNut/2)*-1])
cylinder(d=mSize * (structural?2.0:1.8),h=recessNut, $fn=6, center=true); cylinder(d=hexDiameter,h=recessNut, $fn=6, center=true);
} }
if(chamfer){ if(chamfer){
chamferHeight = mSize*1.5*0.595; chamferHeight = mSize*1.5*0.595;
color(boltClearanceColour)
translate([0,0,(mSize * 0.7)+(chamferHeight/2)]) translate([0,0,(mSize * 0.7)+(chamferHeight/2)])
cylinder(d1=hexDiameter,d2=0,h=chamferHeight, center=true, $fn=6); cylinder(d1=hexDiameter,d2=0,h=chamferHeight, center=true, $fn=6);
} }
@ -20,23 +29,28 @@ module metricBoltHex(mSize, structural=false, recessNut=0, chamfer=false){
module metricSocketCap(mSize, length, structural=false,recessCap=0, chamfer=false){ module metricSocketCap(mSize, length, structural=false,recessCap=0, chamfer=false){
//cap size = M number * 1.5. //cap size = M number * 1.5.
// We add 1% to make the cap head spin nicely in the hole. // We add 1% to make the cap head spin nicely in the hole.
capSize = mSize * 1.5 * 1.01; capSize = (mSize * capSizeMSizeMultiplier) + printingKerfMM;
translate([0,0,(length + ((mSize*1.25)/2))]) color(boltColour)
cylinder(d=capSize,h=mSize*1.25, center=true, $fn=360); translate([0,0,(length + ((mSize*1.25)/2))])
cylinder(d=capSize,h=mSize*1.25, center=true, $fn=circleFacets);
echo (str("cap size is ", capSize));
if(recessCap > 0){ if(recessCap > 0){
color(boltClearanceColour)
translate([0,0,(length + ((recessCap/2)+(mSize*1.25)))]) translate([0,0,(length + ((recessCap/2)+(mSize*1.25)))])
cylinder(d=mSize*1.5,h=recessCap, center=true, $fn=360); cylinder(d=capSize,h=recessCap, center=true, $fn=circleFacets);
} }
if(chamfer){ if(chamfer){
color(boltClearanceColour)
translate([0,0,(length-((mSize*1.5*0.595)/2))]) translate([0,0,(length-((mSize*1.5*0.595)/2))])
cylinder(d2=mSize*1.5,d1=0,h=mSize*1.5*0.595, center=true, $fn=360); cylinder(d2=capSize,d1=0,h=mSize*1.5*0.595, center=true, $fn=circleFacets);
} }
} }
module metricShaft(mSize, length, structural=false){ module metricShaft(mSize, length, structural=false){
translate([0,0,(length/2)]) color(boltColour)
cylinder(d=mSize, h=length+0.01, center=true, $fn=360); translate([0,0,(length/2)])
cylinder(d=mSize+printingKerfMM, h=length+0.01, center=true, $fn=circleFacets);
} }
module metricSocketScrew(mSize, length, structural=false, recessCap=0, chamfer=false){ module metricSocketScrew(mSize, length, structural=false, recessCap=0, chamfer=false){
@ -45,23 +59,30 @@ module metricSocketScrew(mSize, length, structural=false, recessCap=0, chamfer=f
} }
module metricCapheadAndBolt(mSize, length=40, structural=false, recessCap=0, recessNut=0, chamfer=false){ module metricCapheadAndBolt(mSize, length=40, structural=false, recessCap=0, recessNut=0, chamfer=false){
echo (str("Creating a M",mSize, " size, ", length, "mm long caphead and bolt ", chamfer?"with":"without", " chamfering.")); capSize = (mSize * capSizeMSizeMultiplier) + printingKerfMM;
echo (str("Creating a M",mSize, " size, ", length, "mm long bolt with a ", capSize, "mm wide caphead and bolt ", chamfer?"with":"without", " chamfering."));
if(recessCap){ if(recessCap){
echo (str("It has a ", recessCap, "mm recessed cap")); echo (str("It has a ", recessCap, "mm recessed cap"));
} }
if(recessNut){ if(recessNut){
echo (str("It has a ", recessCap, "mm recessed nut")); echo (str("It has a ", recessCap, "mm recessed nut"));
} }
translate([0, 0, 0]) translate([0,0,((length/2)+((mSize*1.25)/2))*-1])
metricSocketScrew(mSize, length, structural=structural, recessCap=recessCap, chamfer=chamfer); union(){
metricBoltHex(mSize,structural, recessNut=recessNut, chamfer=chamfer); translate([0, 0, 0])
metricSocketScrew(mSize, length, structural=structural, recessCap=recessCap, chamfer=chamfer);
metricBoltHex(mSize,structural, recessNut=recessNut, chamfer=chamfer);
}
} }
/**/
translate([0,10,0])
metricCapheadAndBolt(6, 40);
translate([0,0,0]) translate([20,10,0])
metricCapheadAndBolt(8, 40); metricCapheadAndBolt(6, 40, recessNut=1, recessCap=1, chamfer=true);
translate([10,0,0]) /**/
cylinder(h=40,d=1);
/* /*
translate([0,10,0]) translate([0,10,0])
metricCapheadAndBolt(6, 20, recessNut=10, recessCap=10); metricCapheadAndBolt(6, 20, recessNut=10, recessCap=10);