Robot Chassis Base Plate

Create a single flat, 3D-printable robot chassis plate as ONE solid body, extruded 2 mm thick (Z = 0 to 2). Units: millimetres. Top view, 2D outline extruded. No text, no logos, no 3D parts above or below the plate. COORDINATE SYSTEM: origin at the centre of the FRONT edge. X = left/right (centred, ±), Y = toward the rear. Total length 168 mm. OUTLINE (four sections joined end to end, all centred on X = 0): 1. Sensor plate (front): 80 wide x 40 long, Y = 0 to 40. 2. Battery plate: 128 wide x 56 long, Y = 40 to 96. 3. Truss spine: 25 wide x 30 long, Y = 96 to 126. 4. Top deck (rear): 116 wide x 42 long, Y = 126 to 168. Round all outer convex corners to R3. Add R2 fillets where the spine meets the battery plate and the top deck. CUTOUTS (all through-holes unless stated): Sensor plate: - Caster notch: 10 wide x 7 deep rectangle, open to the front edge, X = -5 to 5, Y = 0 to 7. - Two caster mounting holes, 2.2 mm diameter, at X = ±9.5, Y = 3.6. - Sensor window: 64 x 8 rectangle, X = -32 to 32, Y = 19.5 to 27.5. - Two oblong slots, 2.25 wide x 5 long (long side along Y), at X = ±36, centred at Y = 23.5. - Wire slot: 60 x 6 rectangle, X = -30 to 30, Y = 30.5 to 36.5 (3 mm gap below the sensor window). - Keep Y = 9.5 to 19 and X = -35.5 to 35.5 completely flat and empty, reserved for colour/spectral sensors. No holes or features there. Battery plate: - Battery bay for a 2S LiPo: 120 x 36 rectangle, X = -60 to 60, Y = 52 to 88. Make it a shallow 0.6 mm recess (not a through-cut) with R2 corners. - Four strap slots, each 13 long (along X) x 2.5 wide, rounded ends, through-cut. Two at X centre = ±45, Y = 46, and two at X centre = ±45, Y = 92. Truss spine: - X-braced truss: keep a 3 mm perimeter frame and two 2.5 mm wide diagonal ribs crossing corner to corner. Cut four triangular openings between the ribs and the frame. If this is not possible, keep the spine solid. Top deck: - Four M3 standoff holes, 3.2 mm diameter, at X = ±28.5, Y = 132.5 and Y = 159.5. - Two cable pass-through slots, 39 long (along X) x 3.3 wide, centred at X = 0, Y = 133.4 and Y = 158.6. - Four small module holes, 2.2 mm diameter, at X = ±10.5, Y = 137 and Y = 155. - N20 motor mount holes, 2.2 mm diameter, at X = ±40.5 and X = ±49.5, Y = 146 (two holes per side, 9 mm apart). Output a watertight, manifold solid, ready for FDM 3D printing, exported as STL/STEP.

Parameters

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