Abstract: A method for pressing a workpiece with a predetermined pressing force uses a forming tool coupled with an electric motor via a spindle drive that converts the rotational movement of the electric motor drive shaft to a translational movement of the forming tool. The method includes: accelerating the electric motor in a first rotational direction to a predetermined maximal speed of rotation; operating the electric motor at the maximal speed until the drive shaft has completed a predetermined number of revolutions; reducing the speed of rotation of the electric motor to a predetermined reduced speed of rotation; operating the electric motor at the reduced speed until a pressing force increase exceeding a predetermined threshold value is detected by a measuring unit that follows the electric motor; forming the workpiece with constant detection of the pressing force by the measuring unit until the predetermined pressing force has been reached.

Abstract: The invention relates to a method for driving a screw (4) with a predetermined tightening torque by means of a screwdriving tool (3), which is coupled with an electric motor (2), which is activated by a regulation (8). The method comprises the following method steps: acceleration of the electric motor (2) in screwing-in direction (15) to a predetermined maximum rotational speed, operation of the electric motor (2) at maximum rotational speed until a drive shaft (11) of the electric motor (2) has completed a specified number of spindle revolutions, reduction of the rotational speed of the electric motor (2) to a predetermined reduced rotational speed; operation of the electric motor (2) at reduced speed until a torque increase that exceeds a predetermined threshold value is detected by a measuring unit (14) connected downstream from the electric motor (2); subsequent turning of the screw (4) or nut until the predetermined tightening torque is reached.

Abstract: A method for pressing a workpiece with a predetermined pressing force uses a forming tool coupled with an electric motor via a spindle drive that converts the rotational movement of the electric motor drive shaft to a translational movement of the forming tool. The method includes: accelerating the electric motor in a first rotational direction to a predetermined maximal speed of rotation; operating the electric motor at the maximal speed until the drive shaft has completed a predetermined number of revolutions; reducing the speed of rotation of the electric motor to a predetermined reduced speed of rotation; operating the electric motor at the reduced speed until a pressing force increase exceeding a predetermined threshold value is detected by a measuring unit that follows the electric motor; forming the workpiece with constant detection of the pressing force by the measuring unit until the predetermined pressing force has been reached.

Abstract: A method for transferring a workpiece carrier in a manufacturing facility from a first conveying portion, which is controlled by a first controller, to a second conveying portion, which is controlled by a second controller is provided. The conveying portions each have a toothed belt. On the basis of an internal timer in the two controllers, a desired position of a virtual tooth space in the transfer region of the conveying portions is calculated, taking the predefined movement speed of the workpiece carrier into consideration and taking the tooth pitch of the toothed belts into consideration. The toothed belts are controlled and synchronized by the respective controller via the drive units such that a first tooth space of the first toothed belt and a second tooth space of the second toothed belt are synchronized with the desired position of the virtual tooth space.

Abstract: The invention relates to a method for transferring a workpiece carrier (5) in a manufacturing facility (1) from a first conveying portion (2), which is controlled by a first controller (26), to a second conveying portion (3), which is controlled by a second controller (27), the conveying portions (2, 3) each comprising a toothed belt (9, 10).

Abstract: The invention concerns a workpiece carrier (4) for a production unit (1) with at least one conveying section (2). The workpiece carrier (4) comprises a workpiece carrier body (13), a workpiece receptacle (16) arranged on the workpiece carrier body (13), a guide device (14) which is arranged on the workpiece carrier body (13) by means of which the workpiece carrier (4) can be received and displaced in the production unit (1), in particular in the conveying section (2), and a code element (20) which is arranged on the workpiece carrier body (13) which is designed to identify the workpiece carrier (4) by means of a detection means (11) arranged in the production unit (1). For identification, the code element (20) has inhomogeneous material properties in its longitudinal orientation.

Abstract: The invention relates to a welding device (1), in particular a laser welding device, for welding metal workpieces (3) by means of at least one welding head (2), in particular a laser welding head, which defines a working area (4). The welding device is characterized by at least one heating device (5) which acts on the working area (4) to heat up the workpiece (3), in particular before and/or after the welding process.

Abstract: The invention concerns a workpiece carrier (4) for a production unit (1) with at least one conveying section (2). The workpiece carrier (4) comprises a workpiece carrier body (13), a workpiece receptacle (16) arranged on the workpiece carrier body (13), a guide device (14) which is arranged on the workpiece carrier body (13) by means of which the workpiece carrier (4) can be received and displaced in the production unit (1), in particular in the conveying section (2), and a code element (20) which is arranged on the workpiece carrier body (13) which is designed to identify the workpiece carrier (4) by means of a detection means (11) arranged in the production unit (1). For identification, the code element (20) has inhomogeneous material properties in its longitudinal orientation.

Abstract: The invention relates to a welding device (1), in particular a laser welding device, for welding metal workpieces (3) by means of at least one welding head (2), in particular a laser welding head, which defines a working area (4). The welding device is characterized by at least one heating device (5) which acts on the working area (4) to heat up the workpiece (3), in particular before and/or after the welding process.

Abstract: The invention discloses a method and a production installation for producing a sub-assembly consisting of a plurality of parts joined together, in which the first part (1) and second part (2) are removed from a parts delivery site in the vicinity of a transport device and deposited oriented in position on one of a plurality of parts transport carriers of the transport device, and subsequently together with the parts transport carrier transported to an assembly station. The parts transport carrier is stopped in the assembly station in a holding position, whereupon the parts (1, 2), oriented towards one another, are moved by means of a vertical positioning device (200a, 200b) together from a transport position on the parts transport carrier into a preparation position, then positioned relative to one another, clamped and then joined to form a sub-assembly, whereupon the joined subassembly is again deposited on one of a plurality of parts transport carriers and transported away thereby.

Abstract: The invention discloses a method and a production installation for producing a sub-assembly consisting of a plurality of parts joined together, in which the first part (1) and second part (2) are removed from a parts delivery site in the vicinity of a transport device and deposited oriented in position on one of a plurality of parts transport carriers of the transport device, and subsequently together with the parts transport carrier transported to an assembly station. The parts transport carrier is stopped in the assembly station in a holding position, whereupon the parts (1, 2), oriented towards one another, are moved by means of a vertical positioning device (200a, 200b) together from a transport position on the parts transport carrier into a preparation position, then positioned relative to one another, clamped and then joined to form a sub-assembly, whereupon the joined subassembly is again deposited on one of a plurality of parts transport carriers and transported away thereby.