Modular Welding Table Assembly

Project Title: Modular Interlocking Welding Table Assembly Target Output Format: STEP / IGES (3D Model) & DXF (2D Flat Cuts with Kerf Clearance) 1. Overall System Dimensions & Parameters • Worksurface Dimensions: 1000\text{ mm (Length)} \times 800\text{ mm (Width)} • Overall Table Height: 900\text{ mm} (including leg leveling feet) • Skirt / Apron Height: 150\text{ mm} around all four sides • Plate Material Thickness: 6\text{ mm} mild steel plate (tabletop, side aprons, internal ribs, and corner gussets) • Leg Construction: 4 \times Square Steel Tubing (80 \times 80 \times 6\text{ mm}) with M16 threaded end-cap plates welded at the bottom for adjustable leveling feet. 2. Hole Pattern & Hole System (D16 Standard) • Hole Diameter: 16.1\text{ mm} (+0.1\text{ mm} laser tolerance for standard 16\text{ mm} welding clamps/fixtures) • Grid Pattern: 50\text{ mm} \times 50\text{ mm} center-to-center pitch matrix • Hole Layout: • Top Plate: Full grid coverage starting 25\text{ mm} from outer edges (20 \times 16 = 320 holes) • Side Aprons: 2 horizontal rows of 16\text{ mm} holes on a 50\text{ mm} grid centered on the 150\text{ mm} face 3. Internal Structure & Interlocking Grid (Egg-Crate Assembly) • Internal Support Matrix: 2 \times Longitudinal Ribs (1000\text{ mm}) and 2 \times Transverse Ribs (800\text{ mm}) creating a 3 \times 3 grid internal structure. • Slot Joint System: Half-lap interlocking slots (6.2\text{ mm} wide slots for 6\text{ mm} plate thickness) to allow press-fit assembly before welding. • Weight Reduction & Clearance: • Internal ribs must feature large rectangular/oval cutout pockets for weight reduction and cable routing. • Chamfered or notched corner reliefs scaled for 80 \times 80\text{ mm} tube clearance at all four corners. 4. Tab-and-Slot Alignment & Corner Support • Self-Fixturing System: All side aprons and top plate edges must feature interlocking tabs and slots (20\text{ mm} width, 6.2\text{ mm} depth) spaced along the perimeter for self-aligning 90° assembly. • Corner Bracing: 4 diagonal corner gusset plates (6\text{ mm} thick) with weight-reduction cutouts, sized to seat and clamp around the 80 \times 80\text{ mm} square tube legs. 5. Required CAD Deliverables 1. 3D Assembly: Complete 3D CAD model in STEP (.stp) and native CAD formats. 2. 2D CNC Cut Files: DXF files (.dxf) for all flat plate parts, pre-arranged for sheet metal laser/plasma cutting with 1:1 scale and closed vectors: • 1x Tabletop Plate (1000 \times 800\text{ mm}) • 2x Long Side Aprons (1000 \times 150\text{ mm}) • 2x Short Side Aprons (800 \times 150\text{ mm}) • 2x Long Internal Ribs • 2x Short Internal Ribs • 4x Diagonal Corner Gusset Plates (adjusted for 80\times80\text{ mm} legs)

Parameters

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