Slider-Crank Mechanism Assembly

Create a professional slider-crank mechanism as ONE assembly of separate named solids. Units: mm. Stroke = exactly 40 mm. Export STEP (assembly) + STL per part. COORDINATES: origin at the crank shaft axis on the top face of the base plate. X = motion direction of the slider, Y = across, Z = up. Mechanism lies in the XZ-plane... no: motion axis X, crank rotates in the horizontal XY-plane, crank axis along Z. 1) BASE PLATE [Base_Plate] - Steel plate 220 (X) x 120 (Y) x 8 mm, corners R6, four M5 mounting holes at 10 mm from the corners. 2) CRANK [Crank, Crank_Shaft, Crank_Pin, Bearing_Shaft_x2, Bearing_Housing] - Crank_Shaft: diameter 8 mm, along Z, 40 mm long, with a 5.5 mm flat at the motor end. - Crank: disc diameter 50 mm, thickness 6 mm, hub 14 mm diameter x 16 mm long with a radial M3 set screw, central bore 8 mm. - Crank pin hole: diameter 4.1 mm at EXACTLY 20 mm from the disc centre. - Crank_Pin: shoulder bolt, diameter 4 mm, head 7 mm, length 15 mm, press-fit in the crank. - Bearing_Housing: block 40 x 40 x 22 mm with two 608 bearing seats (22 mm bore) holding the shaft; bolted on the base plate with 4 x M4. 3) CONNECTING ROD [Con_Rod, Rod_Bearing_x2] - Flat bar 12 mm wide, 5 mm thick, 70 mm between hole centres, ends fully round R6. - Two 4.1 mm holes, each with a flanged bushing (outer 7 mm, inner 4 mm). - Fillets R0.5. 4) SLIDER AND GUIDING [Slider, Rod_1, Rod_2, Rod_Support_x2, Linear_Bushing_x2] - Two hardened guide rods, diameter 8 mm, 150 mm long, along X, 28 mm apart, at z = 24 mm above the base plate, held by two support blocks (30 x 40 x 24 mm, rod holes 8 mm) bolted on the base plate. - Slider: block 30 (X) x 40 (Y) x 16 (Z) mm with two LM8UU linear bearings (diameter 15 mm, length 24 mm) pressed in, running on the rods. - On top of the slider: a clevis (two ears 4 mm thick, 5.2 mm gap, 10 mm high, 4.1 mm cross hole) receiving the connecting rod. - At the front of the slider: a flat pusher plate 40 x 45 x 3 mm with two M3 screws, corners R3. - Travel: 40 mm. Slider centre at x = 100 mm when retracted, x = 140 mm when extended (relative to the crank axis). 5) DRIVE [Gearmotor, Motor_Plate, Coupling] - DC gearmotor diameter 37 mm, length 80 mm, shaft 6 mm with flat, mounted below the base plate, shaft up along Z, linked to Crank_Shaft by a flexible coupling (diameter 14 mm, length 25 mm, bores 6 and 8 mm). - Motor_Plate: 3 mm L bracket, bolted under the base plate. 6) HOME SENSOR [Limit_Switch, Crank_Flag] - Micro limit switch 20 x 10 x 6 mm on a small bracket near the retracted position, and a 3 mm flag on the crank to trigger it once per turn. GENERAL - Real proportions, fillets R0.5 to R2 on outer edges, no collisions between parts. - Colours: base and supports dark grey, crank and rod blue, rods and shafts steel, slider orange.

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.