Garage Door 6-Link Mechanism - Phase 1 (Exploded Parts)

You will build a 3D CAD model of a planar 6-link garage door mechanism in TWO PHASES. Complete Phase 1 fully (all parts as separate, finished bodies) before starting Phase 2. After Phase 1, list the parts you made and their measured hole spacings, then continue to Phase 2. GLOBAL SETTINGS Units: millimetres. Mechanism plane = XY, Z = depth (thickness direction). Every link: flat bar, 8 mm thick, 20 mm wide, full-round ends of radius 10 mm, 8 mm through-holes (H8) at each pin centre, 1 mm edge chamfer. Use named parameters for every dimension. Model each part in its own file or component with its own origin, with the first hole centre at (0,0) and the bar along +X, mid-plane at Z = 0. ========================================================= PHASE 1: BUILD THE PARTS (do not assemble yet) ========================================================= Part 1: Link_O4A (input crank, red) Three holes on one centreline: O4 at 0, D at 100, A at 296.5. Hole spacing check: O4-D 100, O4-A 296.5. Part 2: Link_O2C (blue) Two holes: O2 at 0, C at 225. Part 3: Link_CD (green) Two holes: C at 0, D at 203.1. Part 4: Link_BC (purple) Two holes: B at 0, C at 138.7. Part 5: Coupler_AB_Door (bar amber, panel tan), one rigid body Bar with holes A at 0 and B at 265.6, continuing straight to a total length of 600 mm from hole A (bar end radius 10 at x = 600). Door panel: 600 mm long along the bar axis (x = 0 to 600), 20 mm thick (Y direction), 300 mm wide in Z, placed on the +Z side of the bar, starting at Z = 4 (touching the bar's +Z face), and joined rigidly to it. Part 6: Wall_Bracket (ground, grey) Plate 10 mm thick, 120 mm wide, 480 mm tall. Two 8 mm holes on the vertical centreline: O2 at 60 mm below the top edge, O4 at 312.5 mm below O2. 10 mm corner fillets. Four M6 mounting holes, 15 mm from each corner. Part 7: Shoulder_Pin (make 7 identical copies later) 8 mm diameter, 60 mm long, head 12 mm dia x 3 mm, E-clip groove 1 mm wide, 0.7 mm deep, 3 mm from the free end. Part 8: Spacer_Sleeve (make several sizes) 8.2 mm inner diameter, 12 mm outer diameter. Lengths: 4 mm (washer gap), 10 mm, 40 mm (for joint A). Special sleeve for O2 only: 8.2 mm ID, 10 mm OD, 36 mm long (10 mm OD, so it clears link O4A in the open pose). PHASE 1 CHECK (report before moving on) Measure and report: O4-D 100, O4-A 296.5, O2-C 225, C-D 203.1, B-C 138.7, A-B 265.6, bracket O2-O4 312.5. Fix any part that is off before Phase 2. =========================================================

Parameters

Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.