This work will attempt to explain the design and calculation of a wheels assembly manipulator as a result of the SEAT Martorell enterprise’s necessity. SEAT, due to the urgency of updating an obsolete manipulator, asks TINTORÉ S.A.U enterprise (where I am actually working) to carry out a manipulator, which fulfills the nowadays-modern factory standards. This manipulator helps the operator with the car wheels assembly in an easy, fast and efficient way. Henceforth, my task begins: to propose several CAD designs that go through a validation process until a final design that meets all the client’s demands (technical and economic) is developed. The design is made with Dassault Systemes’ CATIA V5 R24 program. Once the design is finished, the necessary plans are made in order to build the manipulator and test it before it is final assembly in the SEAT enterprise.