Abstract: The invention concerns a centering and clamping pilot tool comprising a hollow sliding centering part or pilot (4), a slide (1) mounted coaxially mobile inside the recess (3) of the pilot (4), said slide (1) being integral with the rod of an actuator and being connected to at least a clamping hook (16) mounted pivotable about a pin (15) integral with the pilot (4) under the action of the displacement of the slide (1), the slide bearing a pin (14) parallel to the pivot pin (15) of the clamping hook (16), anchored between two flanges of the slide (1) and with which co-operates a groove (17) arranged in the clamping hook (16) mounted pivotable between said flanges (11).

Abstract: The invention is characterized in that the indexing and de-indexing device comprises an electric step motor (19) controlling, via a screw-nut type mechanical transmission (18), a sliding indexing pin (15) moving between an abutting position against the fixed indexed arm (3) and a position spaced apart from the fixed indexed arm (3), said electric motor being controlled by a management electronic module (20) designed to receive a control signal (22) and, in response to the reception of said signal, to power the motor (19) and provide controlled displacement of the indexing pin (15). The invention is applicable to electrically-driven welding pliers.

Abstract: A tool (1) for centering and gripping a part (10) to be secured, having a through passage (10a) and sized for the tool (1), includes a guide member (3), at least one gripping element (4) mounted on the guide member (3) and a body (2) enclosing the drive and guide element of the tool (1). The guide member is mounted on a securement support having a support part (6) provided with a passage (7). The guide member (3) projects at the free end of the support part (6), the free end constituting the reference surface or support surface (9) of the part (10) to be secured whilst the body (2) of the tool (1) is gripped against a surface of the support opposite the support part (6).

Abstract: The welding gun includes an electrically driven welding clamp comprising a fixed indexed arm and a mobile arm, respectively provided with an electrode, and a device for indexing and de-indexing locking and releasing the clamp movement relative to the welding plane. The device for indexing and de-indexing includes a mechanical device arranged to ensure the locking and the releasing of the clamp movement, while the clamp is opening/closing, by the action of an electrical device controlling the opening and closing of the clamp.

Abstract: A tool for centering and clamping of at least a part (P) to be fixed in position and comprising a through passage and adjusted for the tool, comprises a pilot device borne at the end of a case having an upper face forming a support for the part and clamping members. The tool further comprises elements for driving the clamping members between a centering position in which the clamping members are retracted into the pilot device and a plurality of clamping positions in which the clamping members project outside the pilot device and rest on the part (P). The driving elements are arranged for simultaneously pivoting and translating the clamping members between the centering position and the clamping position. The invention is useful for handling parts to be fixed in position.

Abstract: A supporting device for a station for welding tongs hung in an assembly/production liner, consisting of a bracket provided with at least one member for catching a pair of tongs and a system for balancing the tongs in a vertical position, the bracket being integral with a shank. The components and accessories of the station for welding tongs other than the welding tongs, such as the transformer, the switch cupboard, the fluid panel and the programmable control are fixed on the shank and/or the bracket. The bracket further has at its free end an arm supporting the system for catching and balancing the tongs and articulated on the bracket about an axis parallel to the shank. The device is applicable to stations for welding tongs.