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Add threads for PG electrical thread #90

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14b4ab6
Add threads for PG electrical thread
polyfloyd Jul 26, 2024
59688e2
Tweak offsets
polyfloyd Jan 19, 2025
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1 change: 1 addition & 0 deletions Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@ design: clean
cat design/PCO_thread.csv | awk -f design/PCO_thread.awk >> design/THREAD_TABLE.csv
cat design/UIS_thread.csv | awk -f design/UIS_thread.awk >> design/THREAD_TABLE.csv
cat design/microscope_thread.csv | awk -f design/microscope_thread.awk >> design/THREAD_TABLE.csv
cat design/PG_electrical_thread.csv | awk -f design/PG_electrical_thread.awk >> design/THREAD_TABLE.csv
cat design/THREAD_TABLE.csv | awk -f design/autogenerate.awk > THREAD_TABLE.scad

.PHONY: test
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23 changes: 22 additions & 1 deletion THREAD_TABLE.scad
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@@ -1,7 +1,8 @@
/* This script is auto-generated - do not edit
:License: 3-clause BSD. See LICENSE. */

THREAD_TABLE = [["G1/16-ext", [0.907, 3.1631, 6.3625, [[0, -0.4252], [0, 0.4252], [0.5710, 0.1279], [0.5710, -0.1279]]]],
THREAD_TABLE = [
["G1/16-ext", [0.907, 3.1631, 6.3625, [[0, -0.4252], [0, 0.4252], [0.5710, 0.1279], [0.5710, -0.1279]]]],
["G1/16-int", [0.907, -3.9789, 7.9215, [[0, 0.4252], [0, -0.4252], [0.5540, -0.1368], [0.5540, 0.1368]]]],
["G1/8-ext", [0.907, 4.1656, 8.3675, [[0, -0.4252], [0, 0.4252], [0.5710, 0.1279], [0.5710, -0.1279]]]],
["G1/8-int", [0.907, -4.9814, 9.9265, [[0, 0.4252], [0, -0.4252], [0.5540, -0.1368], [0.5540, 0.1368]]]],
Expand Down Expand Up @@ -1901,4 +1902,24 @@ THREAD_TABLE = [["G1/16-ext", [0.907, 3.1631, 6.3625, [[0, -0.4252], [0, 0.4252]
["32-UN-13/16-int", [0.79375, -10.3492, 20.6914, [[0, 0.3473], [0, -0.3473], [0.4296, -0.0992], [0.4296, 0.0992]]]],
["RMS-ext", [0.7056, 9.5829, 19.1859, [[0.0, -0.3274], [0.0, 0.3273], [0.4932, 0.0706], [0.4932, -0.0706]]]],
["RMS-int", [0.7055, -10.3042, 20.5085, [[0.0, 0.2630], [0.0, -0.2630], [0.4808, -0.0127], [0.4808, 0.0127]]]],
["PG7-ext", [1.27, 5.532647, 11.065294, [[-0.001, -0.6319], [-0.001, 0.6319], [0.6811, 0.0580], [0.6811, -0.0580]]]],
["PG7-int", [1.27, -6.355058, 12.710115, [[-0.001, 0.6319], [-0.001, -0.6319], [0.6811, -0.0757], [0.6811, 0.0757]]]],
["PG9-ext", [1.411, 6.806830, 13.613660, [[-0.001, -0.7021], [-0.001, 0.7021], [0.7568, 0.0644], [0.7568, -0.0644]]]],
["PG9-int", [1.411, -7.724508, 15.449017, [[-0.001, 0.7021], [-0.001, -0.7021], [0.7568, -0.0841], [0.7568, 0.0841]]]],
["PG11-ext", [1.411, 8.506830, 17.013660, [[-0.001, -0.7021], [-0.001, 0.7021], [0.7568, 0.0644], [0.7568, -0.0644]]]],
["PG11-int", [1.411, -9.424508, 18.849017, [[-0.001, 0.7021], [-0.001, -0.7021], [0.7568, -0.0841], [0.7568, 0.0841]]]],
["PG13.5-ext", [1.411, 9.406830, 18.813660, [[-0.001, -0.7021], [-0.001, 0.7021], [0.7568, 0.0644], [0.7568, -0.0644]]]],
["PG13.5-int", [1.411, -10.324508, 20.649017, [[-0.001, 0.7021], [-0.001, -0.7021], [0.7568, -0.0841], [0.7568, 0.0841]]]],
["PG16-ext", [1.411, 10.456830, 20.913660, [[-0.001, -0.7021], [-0.001, 0.7021], [0.7568, 0.0644], [0.7568, -0.0644]]]],
["PG16-int", [1.411, -11.374508, 22.749017, [[-0.001, 0.7021], [-0.001, -0.7021], [0.7568, -0.0841], [0.7568, 0.0841]]]],
["PG21-ext", [1.588, 13.254559, 26.509117, [[-0.001, -0.7899], [-0.001, 0.7899], [0.8514, 0.0725], [0.8514, -0.0725]]]],
["PG21-int", [1.588, -14.283822, 28.567644, [[-0.001, 0.7899], [-0.001, -0.7899], [0.8514, -0.0946], [0.8514, 0.0946]]]],
["PG29-ext", [1.588, 17.604559, 35.209117, [[-0.001, -0.7899], [-0.001, 0.7899], [0.8514, 0.0725], [0.8514, -0.0725]]]],
["PG29-int", [1.588, -18.633822, 37.267644, [[-0.001, 0.7899], [-0.001, -0.7899], [0.8514, -0.0946], [0.8514, 0.0946]]]],
["PG36-ext", [1.588, 22.604559, 45.209117, [[-0.001, -0.7899], [-0.001, 0.7899], [0.8514, 0.0725], [0.8514, -0.0725]]]],
["PG36-int", [1.588, -23.633822, 47.267644, [[-0.001, 0.7899], [-0.001, -0.7899], [0.8514, -0.0946], [0.8514, 0.0946]]]],
["PG42-ext", [1.588, 26.104559, 52.209117, [[-0.001, -0.7899], [-0.001, 0.7899], [0.8514, 0.0725], [0.8514, -0.0725]]]],
["PG42-int", [1.588, -27.133822, 54.267644, [[-0.001, 0.7899], [-0.001, -0.7899], [0.8514, -0.0946], [0.8514, 0.0946]]]],
["PG48-ext", [1.588, 28.754559, 57.509117, [[-0.001, -0.7899], [-0.001, 0.7899], [0.8514, 0.0725], [0.8514, -0.0725]]]],
["PG48-int", [1.588, -29.783822, 59.567644, [[-0.001, 0.7899], [-0.001, -0.7899], [0.8514, -0.0946], [0.8514, 0.0946]]]],
];
68 changes: 68 additions & 0 deletions design/PG_electrical_thread.awk
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@@ -0,0 +1,68 @@
function calculateThreadlibSpecs() {
# Calculates threadlib specs for PG electrical threads.

Designator = $1;
TPI = $2;
Pitch = $3;
MinorDiam = $4;
MajorDiam = $5;
PitchDiam = $6;

Pi = 3.141592;

P = 25.4 / TPI;
H = 0.595875 * P;
R = 0.107 * P;

Epsilon = 0.001;

DSupportExt = PitchDiam - H - R/2;
RrotExt = DSupportExt / 2;
drRootExt = -Epsilon;
dzRootExt = cos(40*Pi/180) * H*1.09;
drCrestExt = H*.9;
dzCrestExt = cos(40*Pi/180) * H*.1;

DSupportInt = MinorDiam + H*.9*2 + R/2;
RrotInt = -DSupportInt / 2;
drRootInt = -Epsilon;
dzRootInt = cos(40*Pi/180)*H*1.09;
drCrestInt = H*.9;
dzCrestInt = H*.1;
}

BEGIN {
FS = "\t";
}

/^[^#]/ {
calculateThreadlibSpecs();

# External thread:
printf Designator "-ext," # designator
printf Pitch "," # pitch
printf "%f,", RrotExt # Rrot
printf "%f,", DSupportExt # Dsupport
printf drRootExt "," # r0
printf "%.4f,", -dzRootExt # z0
printf drRootExt "," # r1
printf "%.4f,", dzRootExt # z1
printf "%.4f,", drCrestExt # r2
printf "%.4f,", dzCrestExt # z2
printf "%.4f,", drCrestExt # r3
printf "%.4f\n", -dzCrestExt # z3

# Internal thread:
printf Designator "-int," # designator
printf Pitch "," # pitch
printf "%f,", RrotInt # Rrot
printf "%f,", DSupportInt # Dsupport
printf drRootInt "," # r0
printf "%.4f,", dzRootInt # z0
printf drRootInt "," # r1
printf "%.4f,", -dzRootInt # z1
printf "%.4f,", drCrestInt # r2
printf "%.4f,", -dzCrestInt # z2
printf "%.4f,", drCrestInt # r3
printf "%.4f\n", dzCrestInt # z3
}
11 changes: 11 additions & 0 deletions design/PG_electrical_thread.csv
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# designator tpi pitch minor_diam major_diam pitch_diam
PG7 20 1.27 11.28 12.5 11.89
PG9 18 1.411 13.86 15.2 14.53
PG11 18 1.411 17.26 18.6 17.93
PG13.5 18 1.411 19.06 20.4 19.73
PG16 18 1.411 21.16 22.5 21.83
PG21 16 1.588 26.78 28.3 27.54
PG29 16 1.588 35.48 37.0 36.24
PG36 16 1.588 45.48 47.0 46.24
PG42 16 1.588 52.48 54.0 53.24
PG48 16 1.588 57.78 59.3 58.54
2 changes: 1 addition & 1 deletion design/autogenerate.awk
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Expand Up @@ -2,7 +2,7 @@ BEGIN {
FS = ",";
print "/* This script is auto-generated - do not edit"
print " :License: 3-clause BSD. See LICENSE. */"
printf "\nTHREAD_TABLE = ["
printf "\nTHREAD_TABLE = [\n"
}

// {
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