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Joints 3D Models

Find the best Joints 3D Models, free download in STL, FBX, GLB, OBJ, 3MF, USDZ for 3D modeling and creation in Blender, 3D printing, game developing, animation, eCommerce, AR/VR and etc. Generated by Tripo AI 3D Generator.

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Create exactly six modular 3D vehicle parts (chassis base, front module, rear module, wheel unit, roof unit, and door unit) that each fit within a 3 m × 3 m × 3 m bounding box with the pivot at bottom-center, align to a 0.5-meter grid, share standardized connection faces, maintain consistent scale and wall thickness, connect seamlessly without gaps or overlaps, tile UVs cleanly across joints, remain fully compatible when rotated in 90° increments, and demonstrate correctness by assembling into a complete drivable vehicle using only these parts.
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17. Watt's linkage
Type: Four-bar approximate straight-line mechanism (4 revolute joints)
James Watt's 1784 invention produces approximate straight-line motion with deviation of only 1 part in 4000.
Two equal outer bars and a shorter central bar create a figure-8 (lemniscate) path at the coupler midpoint—a
small arc of which closely approximates a straight line. Modern application: vehicle rear axle suspensions
constraining lateral movement.
Joints required:
4 Revolute mates: 2 grounded pivots, 2 coupler connections
1 Fastened mate: Ground link
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Drew Loftus
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