Abstract: It is an object to provide a machining and conveying apparatus in which a moving range of a movable arm is widened and a degree of operational freedom of the movable arm is heightened so that constraint of a work machining condition can be eased. A machining and conveying apparatus 1 has a first rotational moving unit 15 that is provided between a base end of a movable arm 2 and a base plate 16 so as to rotationally move the movable arm 2 about a rotation shaft 14 vertical to rotation shafts 5, 6 and 7 of joints of the movable arm 2, and a second rotational moving unit 20 that is provided to an arm piece 11 at the base end of the movable arm 2 so as to rotationally move the movable arm 2 about a rotation shaft 19 vertical to both the rotation shaft 14 of the first rotational moving unit and the rotation shafts 5, 6 and 7 of the joints.

Abstract: On a setting cart which is movable back and forth between a setting station and a vehicle body assembly station, there are provided floor panel setting members, side sill receiving members and side panel forcing members which force side panels toward a floor panel from a lateral outward. In the setting station, the floor panel and the side panels which are set in position on the setting cart are transferred to a jig which is disposed in a side portion of the vehicle body assembly station. The side panels are welded to the floor panel by welding robots which are disposed at a level below the jig. In the above-described arrangement, the side sill receiving members and the side panel forcing members are set on the setting cart so as to be retractable into shunted positions free from interference with the welding robots in welding operation. The welding work by the welding robots can thus be started without waiting for the returning of the setting cart to the setting station.