diff options
| -rw-r--r-- | mechanical-specifications.typ | 429 |
1 files changed, 422 insertions, 7 deletions
diff --git a/mechanical-specifications.typ b/mechanical-specifications.typ index 3be195d..465702e 100644 --- a/mechanical-specifications.typ +++ b/mechanical-specifications.typ @@ -40,8 +40,8 @@ especially in terms of magnetic shielding. cetz.canvas({ import cetz.draw: * - // Scale factor: 1 mm = 0.035 drawing units - let s = 0.035 + // Scale factor: 1 mm = 0.06 drawing units + let s = 0.06 let h-panel = 177.8 * s // 6.223 let h-body = 165.1 * s // 5.7785 @@ -190,7 +190,7 @@ especially in terms of magnetic shielding. stroke: 0.5pt + luma(120), ) line( - (x-body-rear, y-top-panel - 0.2), + (x-body-rear, y-top-panel - 0.4), (x-body-rear, y-top-panel + 0.2), stroke: 0.5pt + luma(120), ) @@ -297,9 +297,424 @@ interlocking U-shaped steel channel: ===== L-channel (chassis) <l-channel-chassis> #figure( - image("pictures/l-channel.svg"), - caption: [L-channel (chassis) construction], -) <figure-l-channel-chassis> + cetz.canvas({ + import cetz.draw: * + + // Scale factor: 1 mm = 0.030 drawing units + let s = 0.030 + + let h = 165.1 * s // 4.953 + let d = 152.4 * s // 4.572 + let w = 35.7 * s // 1.071 + let f = 8.0 * s // 0.240 (8 mm flange width) + + let db25-y = 55.0 * s // 1.650 + let bnc-y = 130.0 * s // 3.900 + let db25-x = 17.85 * s // 0.5355 (centered in 35.7 mm width) + + let y-bot = 0 + let y-top = h + + // ========================================== + // 1. LEFT ELEVATION (Left Wall: 152.4 x 165.1 mm) + // ========================================== + let x-left-start = 0 + let x-left-end = x-left-start + d + let x-left-mid = (x-left-start + x-left-end) / 2 + + // View Title + content((x-left-mid, y-top + 0.8), text( + size: 8.5pt, + weight: "bold", + )[LEFT ELEVATION]) + + // Main Left Wall Sheet + rect( + (x-left-start, y-bot), + (x-left-end, y-top), + fill: luma(245), + stroke: 1.2pt + black, + ) + + // Folded Flanges (Top, Bottom, Front folded 90 deg inward - shown as dashed lines) + // Top Flange + line( + (x-left-start, y-top - f), + (x-left-end, y-top - f), + stroke: (paint: luma(120), thickness: 0.7pt, dash: "dashed"), + ) + // Bottom Flange + line( + (x-left-start, y-bot + f), + (x-left-end, y-bot + f), + stroke: (paint: luma(120), thickness: 0.7pt, dash: "dashed"), + ) + // Front Flange (at x-left-start) + line( + (x-left-start + f, y-bot), + (x-left-start + f, y-top), + stroke: (paint: luma(120), thickness: 0.7pt, dash: "dashed"), + ) + + // PEM Nut Press-Fit Inserts on Flanges (Representative circles) + circle( + (x-left-start + f / 2, y-bot + 12 * s), + radius: 0.06, + fill: white, + stroke: 0.6pt + black, + ) + circle( + (x-left-start + f / 2, y-top - 12 * s), + radius: 0.06, + fill: white, + stroke: 0.6pt + black, + ) + circle( + (x-left-mid, y-bot + f / 2), + radius: 0.06, + fill: white, + stroke: 0.6pt + black, + ) + circle( + (x-left-mid, y-top - f / 2), + radius: 0.06, + fill: white, + stroke: 0.6pt + black, + ) + + // Dimensions: Depth & Height + line( + (x-left-start, y-bot), + (x-left-start, y-bot - 0.6), + stroke: 0.4pt + luma(140), + ) + line( + (x-left-end, y-bot), + (x-left-end, y-bot - 0.6), + stroke: 0.4pt + luma(140), + ) + line( + (x-left-start, y-bot - 0.6), + (x-left-end, y-bot - 0.6), + mark: (start: "stealth", end: "stealth"), + mark-size: 0.10, + stroke: 0.6pt + black, + ) + content((x-left-mid, y-bot - 0.9), text(size: 7pt)[$qty(152.4, "mm")$]) + + line( + (x-left-start, y-bot), + (x-left-start - 0.6, y-bot), + stroke: 0.4pt + luma(140), + ) + line( + (x-left-start, y-top), + (x-left-start - 0.6, y-top), + stroke: 0.4pt + luma(140), + ) + line( + (x-left-start - 0.6, y-bot), + (x-left-start - 0.6, y-top), + mark: (start: "stealth", end: "stealth"), + mark-size: 0.10, + stroke: 0.6pt + black, + ) + content( + (x-left-start - 0.9, (y-bot + y-top) / 2), + text(size: 7pt)[$qty(165.1, "mm")$], + angle: 90deg, + ) + + // ========================================== + // 2. REAR ELEVATION (Rear Closure: 35.7 x 165.1 mm) + // ========================================== + let x-rear-start = 5.8 + let x-rear-end = x-rear-start + w + let x-rear-mid = (x-rear-start + x-rear-end) / 2 + + // View Title + content((x-rear-mid, y-top + 0.8), text( + size: 8.5pt, + weight: "bold", + )[REAR ELEVATION]) + + // Main Rear Closure Plate + rect( + (x-rear-start, y-bot), + (x-rear-end, y-top), + fill: luma(235), + stroke: 1.2pt + black, + ) + + // Flanges (Top, Bottom, Right folded 90 deg inward) + line((x-rear-start, y-top - f), (x-rear-end, y-top - f), stroke: ( + paint: luma(120), + thickness: 0.7pt, + dash: "dashed", + )) + line((x-rear-start, y-bot + f), (x-rear-end, y-bot + f), stroke: ( + paint: luma(120), + thickness: 0.7pt, + dash: "dashed", + )) + line((x-rear-end - f, y-bot), (x-rear-end - f, y-top), stroke: ( + paint: luma(120), + thickness: 0.7pt, + dash: "dashed", + )) + + // DB-25 Cutout at Y = 55.0 mm (Centered) + let db25-w = 26.0 * s + let db25-h = 11.0 * s + rect( + (x-rear-start + db25-x - db25-w / 2, db25-y - db25-h / 2), + (x-rear-start + db25-x + db25-w / 2, db25-y + db25-h / 2), + fill: white, + stroke: 0.9pt + black, + ) + content((x-rear-start + db25-x, db25-y), text( + size: 5.5pt, + weight: "bold", + )[DB-25]) + + // BNC Cutout at Y = 130.0 mm (Centered, Facultative) + let bnc-r = 6.0 * s + circle( + (x-rear-start + db25-x, bnc-y), + radius: bnc-r, + fill: white, + stroke: 0.9pt + black, + ) + content((x-rear-start + db25-x, bnc-y), text( + size: 5pt, + weight: "bold", + )[BNC]) + + // Cutout Centerline Indicators & Heights + line((x-rear-start - 0.2, db25-y), (x-rear-end + 0.6, db25-y), stroke: ( + paint: luma(160), + thickness: 0.4pt, + dash: "dash-dotted", + )) + line((x-rear-start - 0.2, bnc-y), (x-rear-end + 0.6, bnc-y), stroke: ( + paint: luma(160), + thickness: 0.4pt, + dash: "dash-dotted", + )) + + // Width Dimension (35.7 mm) + line( + (x-rear-start, y-bot), + (x-rear-start, y-bot - 0.6), + stroke: 0.4pt + luma(140), + ) + line( + (x-rear-end, y-bot), + (x-rear-end, y-bot - 0.6), + stroke: 0.4pt + luma(140), + ) + line( + (x-rear-start, y-bot - 0.6), + (x-rear-end, y-bot - 0.6), + mark: (start: "stealth", end: "stealth"), + mark-size: 0.10, + stroke: 0.6pt + black, + ) + content((x-rear-mid, y-bot - 0.9), text(size: 7pt)[$qty(35.7, "mm")$]) + + // Height Dimensions: DB-25 (55 mm) & BNC (130 mm) + line( + (x-rear-end, y-bot), + (x-rear-end + 0.6, y-bot), + stroke: 0.4pt + luma(140), + ) + line( + (x-rear-end + 0.6, y-bot), + (x-rear-end + 0.6, db25-y), + mark: (start: "stealth", end: "stealth"), + mark-size: 0.10, + stroke: 0.6pt + black, + ) + content( + (x-rear-end + 0.9, db25-y / 2), + text(size: 6.5pt)[$qty(55.0, "mm")$], + angle: -90deg, + ) + + line( + (x-rear-end + 0.6, db25-y), + (x-rear-end + 0.6, bnc-y), + mark: (start: "stealth", end: "stealth"), + mark-size: 0.10, + stroke: 0.6pt + black, + ) + content( + (x-rear-end + 0.9, (db25-y + bnc-y) / 2), + text(size: 6.5pt)[$qty(130.0, "mm")$], + angle: -90deg, + ) + + // ========================================== + // 3. ISOMETRIC VIEW (3D Sheet Metal Structure) + // ========================================== + let iso-x0 = 12.5 + let iso-y0 = -1 + + // Helper function for isometric projection + // X = Width (0..35.7 mm), Y = Height (0..165.1 mm), Z = Depth (0..152.4 mm) + let p(x-mm, y-mm, z-mm) = { + let px = iso-x0 + (x-mm * 0.866 - z-mm * 0.866) * s + let py = iso-y0 + (y-mm + x-mm * 0.5 + z-mm * 0.5) * s + return (px, py) + } + + // View Title + content((iso-x0, y-top + 0.8), text( + size: 8.5pt, + weight: "bold", + )[ISOMETRIC VIEW]) + + // Left Wall Outer Face (Z=0..152.4, Y=0..165.1, X=0) + line( + p(0, 0, 0), + p(0, 0, 152.4), + p(0, 165.1, 152.4), + p(0, 165.1, 0), + close: true, + fill: luma(240), + stroke: 1pt + black, + ) + + // Rear Closure Outer Face (X=0..35.7, Y=0..165.1, Z=0) + line( + p(0, 0, 0), + p(35.7, 0, 0), + p(35.7, 165.1, 0), + p(0, 165.1, 0), + close: true, + fill: luma(225), + stroke: 1pt + black, + ) + + // Folded Inward Flanges (8 mm width) + // Left Wall Top Flange + line( + p(0, 165.1, 0), + p(0, 165.1, 152.4), + p(8.0, 165.1, 152.4), + p(8.0, 165.1, 0), + close: true, + fill: luma(210), + stroke: 0.8pt + black, + ) + + // Left Wall Front Flange + line( + p(0, 0, 152.4), + p(0, 165.1, 152.4), + p(8.0, 165.1, 152.4), + p(8.0, 0, 152.4), + close: true, + fill: luma(215), + stroke: 0.8pt + black, + ) + + // Rear Wall Bottom Flange + line( + p(0, 0, 0), + p(0, 0, 8.0), + p(35.7, 0, 8.0), + p(35.7, 0, 0.0), + close: true, + fill: luma(200), + stroke: 0.8pt + black, + ) + + // Left Wall Bottom Flange + line( + p(0, 0, 0), + p(0, 0, 152.4), + p(8.0, 0, 152.4), + p(8.0, 0, 8), + close: true, + fill: luma(210), + stroke: 0.8pt + black, + ) + + // Rear Wall Right Flange + line( + p(35.7, 0, 0), + p(35.7, 165.1, 0), + p(35.7, 165.1, 8.0), + p(35.7, 0, 8.0), + close: true, + fill: luma(200), + stroke: 0.8pt + black, + ) + + // Rear Wall Top Flange + line( + p(0, 165.1, 0), + p(0, 165.1, 8.0), + p(35.7, 165.1, 8.0), + p(35.7, 165.1, 0.0), + close: true, + fill: luma(200), + stroke: 0.8pt + black, + ) + + // DB-25 Cutout on Rear Face (Z=0) + let db-w2 = 13.0 + let db-h2 = 5.5 + line( + p(17.85 - db-w2, 55.0 - db-h2, 0), + p(17.85 + db-w2, 55.0 - db-h2, 0), + p(17.85 + db-w2, 55.0 + db-h2, 0), + p(17.85 - db-w2, 55.0 + db-h2, 0), + close: true, + fill: white, + stroke: 0.8pt + black, + ) + + // BNC Cutout on Rear Face (Z=0) + line( + p(17.85 - 4.5, 130.0 - 4.5, 0), + p(17.85 + 4.5, 130.0 - 4.5, 0), + p(17.85 + 4.5, 130.0 + 4.5, 0), + p(17.85 - 4.5, 130.0 + 4.5, 0), + close: true, + fill: white, + stroke: 0.8pt + black, + ) + + // PEM Nut Threaded Insert Points (Visual markers on top/front flanges) + circle(p(4.0, 165.1, 30.0), radius: 0.05, fill: black) + circle(p(4.0, 165.1, 120.0), radius: 0.05, fill: black) + circle(p(4.0, 0, 30.0), radius: 0.05, fill: black) + circle(p(4.0, 0, 120.0), radius: 0.05, fill: black) + circle(p(4.0, 30.0, 152.4), radius: 0.05, fill: black) + circle(p(4.0, 135.0, 152.4), radius: 0.05, fill: black) + circle(p(35.7 - 4.0, 30.0, 0), radius: 0.05, fill: black) + circle(p(35.7 - 4.0, 135.0, 0), radius: 0.05, fill: black) + circle(p(17.85, 165.1, 4.0), radius: 0.05, fill: black) + circle(p(17.85, 0, 4.0), radius: 0.05, fill: black) + + // Masked Unpainted Area Callout Annotation + line( + p(4.0, 165.1, 75.0), + (iso-x0 + 1.2, y-top), + stroke: 0.5pt + black, + ) + content( + (iso-x0 + 1.25, y-top - 0.3), + text(size: 6.5pt)[Unpainted EMI flange \ + contact area (PEM nuts \ + fitted)], + anchor: "south-west", + ) + }), + caption: [Cassette L-Channel structural spine technical drawings showing orthographic projections (left and rear elevations) and 3D isometric sheet metal form.], +) <figure-cassette-lchannel-diagram> / Role: Structural spine. Holds the PCB and Front Panel. / Geometry: @@ -316,7 +731,7 @@ interlocking U-shaped steel channel: / Flanges (The Mounting Points): - The Left Wall features Top, Bottom and Front flanges folded $qty(90, "degree")$ inward. - - The Rear Wall features Top, Bottom, and Right flanges folde + - The Rear Wall features Top, Bottom, and Right flanges folded $qty(90, "degree")$ inward. - The flanges are $qty(8, "mm")$. / Threads: These flanges must be fitted with M3 Press-Fit Threaded Inserts (PEM |