sl-mechanical
23f2daa3cd
Part of Phase 2 sensor mount designs for SaltyBot 25 mm mast. Files added: chassis/sensor_head.scad — split collar (25 mm OD stem) + octagonal platform chassis/rplidar_mount.scad — anti-vibration ring for RPLIDAR A1M8 (Ø58 mm BC) chassis/realsense_mount.scad — RealSense D435i arm bracket, 10° tilt, 1/4-20 nut chassis/imx219_mount.scad — 4× IMX219 radial arms, 10° tilt, CSI ribbon slot chassis/sensor_head_assembly.md — assembly diagram + fastener BOM + print settings Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
77 lines
3.1 KiB
OpenSCAD
77 lines
3.1 KiB
OpenSCAD
// ============================================================
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// rplidar_mount.scad — RPLIDAR A1M8 Anti-Vibration Ring Rev A
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// Agent: sl-mechanical 2026-02-28
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// ============================================================
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// Flat ring sits between platform and RPLIDAR A1M8.
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// Anti-vibration isolation via 4× M3 silicone grommets
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// (same type as FC vibration mounts — Ø6 mm silicone, M3).
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//
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// Bolt stack (bottom → top):
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// M3×30 SHCS → platform (8 mm) → grommet (8 mm) →
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// ring (4 mm) → RPLIDAR bottom (threaded M3, ~6 mm engagement)
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//
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// RENDER options:
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// "ring" print-ready flat ring (default)
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// "assembly" ring in position on platform stub
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// ============================================================
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RENDER = "ring";
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// ── RPLIDAR A1M8 ─────────────────────────────────────────────
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RPL_BODY_D = 70.0; // body diameter
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RPL_BC = 58.0; // M3 mounting bolt circle
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// ── Mount ring ───────────────────────────────────────────────
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RING_OD = 82.0; // outer diameter (RPL_BODY_D + 12 mm)
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RING_ID = 30.0; // inner cutout (cable / airflow)
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RING_H = 4.0; // ring thickness
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BOLT_D = 3.3; // M3 clearance through-hole
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GROMMET_D = 7.0; // silicone grommet OD (seat recess on bottom)
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GROMMET_H = 1.0; // seating recess depth
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$fn = 64;
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e = 0.01;
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// ─────────────────────────────────────────────────────────────
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module rplidar_ring() {
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difference() {
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cylinder(d = RING_OD, h = RING_H);
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// Central cutout
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translate([0, 0, -e])
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cylinder(d = RING_ID, h = RING_H + 2*e);
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// 4× M3 clearance holes on bolt circle
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for (a = [45, 135, 225, 315]) {
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translate([RPL_BC/2 * cos(a), RPL_BC/2 * sin(a), -e])
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cylinder(d = BOLT_D, h = RING_H + 2*e);
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}
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// Grommet seating recesses — bottom face
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for (a = [45, 135, 225, 315]) {
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translate([RPL_BC/2 * cos(a), RPL_BC/2 * sin(a), -e])
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cylinder(d = GROMMET_D, h = GROMMET_H + e);
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}
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}
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}
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// ─────────────────────────────────────────────────────────────
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// Render selector
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// ─────────────────────────────────────────────────────────────
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if (RENDER == "ring") {
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rplidar_ring();
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} else if (RENDER == "assembly") {
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// Platform stub
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color("Silver", 0.5)
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difference() {
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cylinder(d = 90, h = 8);
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translate([0, 0, -e]) cylinder(d = 25.4, h = 8 + 2*e);
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}
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// Ring floating 8 mm above (grommet gap)
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color("SkyBlue", 0.9)
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translate([0, 0, 8 + 8])
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rplidar_ring();
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}
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