mirror of
https://github.com/bherbruck/solidcraft.git
synced 2026-11-03 10:35:58 +00:00
Fillet rig: the concave arc where a bar's top meets a cylinder its sides run tangent into
An r2 round of the arc adds the spandrel ring clipped by the bar's sides, integral over rho in [8, 10] of [2 - sqrt(4 - (10 - rho)^2)] rho 2 asin(8 / rho) = 18.455363. With round coordinates it builds to that; with the reported design's sketch residues (~1e-10 mm) SMLib's blend fails, status 1001 (SmFilletNx1Corner: unable to make topology at the arc's end), listed as known failing. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
jyviko
+11
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{
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"sources": [
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"tangency-labs/solidcraft#1207"
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],
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"what": "as 1207-fillet-concave-arc-bar-top-into-cylinder, with the sketch solver's residues of the reported design: SMLib's Nx1 corner fails (status 1001)",
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"source": "analytic",
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"method": "the same bar with the sketch solver's residues of the reported design (~1e-10 mm: the front side's ends differ by 3.0e-10 in y, the arc's centre 5.7e-11 off the disc's), length 41.160417754, V0 = 41.160417754 * 16.0000000000762 * 10 + 960 pi; the concave arc where the bar's top meets the cylinder's wall rounded r2: the spandrel ring added, clipped by the bar's sides y = 0 and y = 16 (as 1207-fillet-concave-arc-at-boss): integral over rho in [8, 10] of [2 - sqrt(4 - (10 - rho)^2)] rho 2 asin(8 / rho) = 18.4553684491 (Simpson)",
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"body_count": 1,
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"faces": 8,
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"volume_mm3": 9620.051156581294
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}
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+169
@@ -0,0 +1,169 @@
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{
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"commands": [
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{
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"command": "sketch.create",
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"params": {
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"plane": "XY",
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"name": "Peg"
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}
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},
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{
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"command": "sketch.line",
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0.05792545052986289
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],
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[
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41.64971183161969,
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0.05792545083296555
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]
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]
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}
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},
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{
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"command": "sketch.arc.center_point",
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"params": {
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"center": [
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41.64971183108453,
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8.057925450890195
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],
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"start": [
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41.64971183161969,
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0.05792545083296555
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],
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"end": [
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41.64971183161969,
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16.05792545083297
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]
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}
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},
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{
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"command": "sketch.line",
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"params": {
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"points": [
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[
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41.64971183161969,
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16.05792545083297
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],
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[
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0.4892940775280783,
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16.057925450606035
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]
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]
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}
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},
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{
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"command": "sketch.line",
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"params": {
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"points": [
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[
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0.4892940775280783,
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],
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[
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0.4892940775280783,
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0.05792545052986289
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]
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]
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}
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},
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{
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"command": "sketch.finish",
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"params": {}
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},
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{
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"command": "solid.extrude",
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"params": {
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"sketch": "Peg",
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"distance": 10,
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"body_name": "Peg"
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}
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},
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{
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"command": "sketch.create",
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"params": {
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"plane": {
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"origin": [
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0,
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0,
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],
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"x_dir": [
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1,
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0,
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],
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"y_dir": [
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0,
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1,
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]
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},
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"name": "Top"
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}
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},
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{
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"command": "sketch.project",
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"params": {
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"refs": [
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{
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"face": [
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2.4892940775280783,
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10
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}
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]
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}
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},
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{
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"command": "sketch.circle.center",
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"params": {
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"center": [
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41.64971183108453,
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8.057925450832967
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],
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"radius": 8.000000000006473
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}
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},
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{
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"command": "sketch.finish",
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"params": {}
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},
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{
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"command": "solid.extrude",
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"params": {
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"sketch": "Top",
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"distance": 10,
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"operation": "join",
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"targets": [
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"Peg"
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],
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"profiles": [
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{
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"point": [
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41.64971183108453,
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8.057925450832967
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]
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}
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],
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"exact_regions": true
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}
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},
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{
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"command": "solid.fillet",
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"params": {
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"edges": [
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[
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33.65,
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8.058,
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10
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]
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],
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"radius": 2
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}
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}
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]
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}
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+11
@@ -0,0 +1,11 @@
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{
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"sources": [
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"tangency-labs/solidcraft#1207"
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],
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"what": "an r2 round of the concave arc where a bar's top meets a cylinder its sides run tangent into",
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"source": "analytic",
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"method": "a bar 40 x 16 x 10 whose far end is a half disc R8 about (40, 8), a disc R8 about the same centre sketched on its top (the top's outline projected) and extruded 10 up, joined: the bar's sides run tangent into the cylinder, V0 = 6400 + 960 pi; the concave arc where the bar's top meets the cylinder's wall rounded r2: the spandrel ring added, clipped by the bar's sides y = 0 and y = 16 (as 1207-fillet-concave-arc-at-boss): integral over rho in [8, 10] of [2 - sqrt(4 - (10 - rho)^2)] rho 2 asin(8 / rho) = 18.4553684491 (Simpson)",
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"body_count": 1,
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"faces": 8,
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"volume_mm3": 9434.384315895273
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}
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@@ -0,0 +1,169 @@
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{
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"commands": [
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{
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"command": "sketch.create",
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"params": {
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"plane": "XY",
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"name": "Peg"
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}
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},
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{
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"command": "sketch.line",
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"params": {
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"points": [
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[
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0,
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0
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],
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[
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40,
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0
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]
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]
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}
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},
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{
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"command": "sketch.arc.center_point",
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"params": {
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"center": [
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40,
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8
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],
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"start": [
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40,
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0
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],
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"end": [
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40,
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16
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]
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}
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},
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{
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"command": "sketch.line",
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"params": {
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"points": [
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[
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40,
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16
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],
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[
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0,
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16
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]
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]
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}
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},
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{
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"command": "sketch.line",
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"params": {
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"points": [
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[
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0,
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16
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],
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[
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0,
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0
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]
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]
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}
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},
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{
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"command": "sketch.finish",
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"params": {}
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},
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{
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"command": "solid.extrude",
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"params": {
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"sketch": "Peg",
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"distance": 10,
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"body_name": "Peg"
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}
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},
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{
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"command": "sketch.create",
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"params": {
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"plane": {
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"origin": [
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0,
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0,
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10
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],
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"x_dir": [
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1,
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0,
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0
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],
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"y_dir": [
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0,
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1,
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0
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]
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},
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"name": "Top"
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}
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},
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{
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"command": "sketch.project",
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"params": {
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"refs": [
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{
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"face": [
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2,
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8,
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10
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]
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}
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]
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}
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},
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{
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"command": "sketch.circle.center",
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"params": {
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"center": [
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40,
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8
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],
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"radius": 8
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}
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},
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{
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"command": "sketch.finish",
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"params": {}
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},
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{
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"command": "solid.extrude",
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"params": {
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"sketch": "Top",
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"distance": 10,
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"operation": "join",
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"targets": [
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"Peg"
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],
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"profiles": [
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{
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"point": [
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40,
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8
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]
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}
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],
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"exact_regions": true
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}
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},
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{
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"command": "solid.fillet",
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"params": {
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"edges": [
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[
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32,
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8,
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10
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]
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],
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"radius": 2
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}
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}
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]
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}
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@@ -15,6 +15,7 @@
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1080-fillet-sloped-basin-1-mm-rim-r4-4-edges not supported yet: a convex round past its face is not yet built by subtraction
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1113-chamfer-arc-top-edge-full-wall-height-refused builds the chamfer as tall as the wall where it should be refused as too large
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1207-fillet-bar-top-edge-after-boss-arc-round-r0-5 SMLib's check refuses the round: internal coincident control points in a B-spline curve (an internal pole)
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1207-fillet-concave-arc-bar-top-into-cylinder-solver-residues SMLib status 1001: SmFilletNx1Corner cannot make the topology at the arc's end (fillet error 3, corner type 8)
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1207-fillet-corner-after-round-running-into-cylinder-solver-residues SMLib's check refuses the round: its corner's surface of revolution is close to singular at its boundary (SmSurface test 5)
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1668-fillet-outer-top-edge-of-thin-wall-r7-past-inside-corner a slit along the hollow, 0.507 mm^3 off: 38458.389 is V0 less the round's whole section along 104, so the section's part over the hollow (0.005068 mm^2 along 100), which is not material, is taken anyway
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190-fillet-disc-rim-past-its-2mm-wall SMLib status 1001: a convex round past its face is not yet built by subtraction
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