Council of Scientific and Industrial Research

Samik Dutta

Kornel F Ehmann

Abhijit Mahapatra

A three degrees of freedom (3DoFs) Wedge Air Bearing Translational Stage System (WABSS) for positioning of miniature components using a parallel kinematic mechanism. The system has three kinematic sub-chains situated at 120° apart from each other, where each sub-chain has one prismatic joint and one planar joint guided by air bearings. One central stage assembly (CSA) having three wedges with wedge planes oriented 45° to the horizontal plane is capable of translations along the X-, Y- and Z-axes for precision positioning of the targeted workpiece material held on the CSA. Following the parallel kinematic principle, the coordinated translations of the three slide bars produce 3DoFs translations to position CSA in each sub-chain. The linear geometric error along the Z-axis is independent from the angular tolerances due to its unique vertical structure.

Growing community of inventors

Durgapur, India

Samik Dutta