Abstract: A device for changing a pump unit of a centrifugal pump is proposed. The centrifugal pump includes the pump unit and a stator extending in an axial direction. A cup-shaped recess is provided at the first axial end of the stator into which the pump unit is capable of being inserted. The device includes an actuating device with which a mechanical force is capable of being exerted on the pump unit. The mechanical force acts in the axial direction and is directed in such a way that it separates the pump unit from the stator in the axial direction.

Abstract: A pump unit includes a pump housing with an inlet and an outlet and a rotor arranged in the pump housing. The pump unit is designed for a non-contact magnetic levitation of the rotor and for a non-contact magnetic drive of the rotor by the stator. The vanes of the rotor are arranged around a central inlet area of the rotor, and the rotor includes a relief opening for generating a recirculation flow which is directed from a back side of the rotor facing away from the inlet in the direction of the central inlet area of the rotor, and a separating element arranged in the central inlet area, which redirects the recirculation flow in a radial direction perpendicular to the axial direction. The, the separating element and the relief opening of the rotor are a one-piece unit.

Abstract: A pump unit includes a pump housing and a rotor in the pump housing. The rotor includes vanes for conveying a fluid. Each vane extends in the axial direction to an end face. The pump unit is designed for non-contact magnetic levitation of the rotor and non-contact magnetic drive of the rotor by the stator. The pump housing has a cover part and a bottom part, the bottom part having a cylindrical cup to receive the rotor, and the cup can be inserted into the cup-shaped recess of the stator. The inlet has a lip which forms an axial end of the inlet, and projects into the pump chamber and, when viewed in the flow direction, ends in front of the end face of the rotor when the rotor is centered with respect to the axial direction in the operating state.

Abstract: A plug-in connection comprises a plug-in connector (1) and a mating plug-in connector that can be plugged together with the latter. The plug-in connector (1) has a housing (2) into which an electrical conductor (3) is inserted. The electrical conductor (3) is electrically contacted with a contact partner (4) likewise arranged in the housing (2) by means of their surfaces coming to rest on each other. The contact partner (4) is contacted via its circumferential end face (5) with a contact partner of the mating plug-in connector in such a way that the end faces come to rest on each other. The plugging-together is effected and supported by a screw (6). The screw includes insulation (e.g., insulating element (12) or a coating) such that the screw (6) does not touch voltage-carrying parts such as the electrical conductor (3) and/or the contact partner (4).

Abstract: An imaging device for imaging a process zone of a laser machine tool includes an image sensor and an optical imaging system. The optical imaging system includes a system axis extending between the image sensor and the process zone, a first aperture spaced radially from the system axis and delimiting first light beams emitted from the process zone at a first imaging angle, a second aperture delimiting second light beams emitted from the process zone at a second imaging angle, and a first imaging lens arranged between the first and/or the second aperture and the image sensor and configured to image the first light beams and the second light beams on the image sensor. The first imaging angle is different from the second imaging angle. The optical imaging system is configured to image the first light beams spatially separately from the second light beams.

Abstract: A pump unit for a centrifugal pump includes a pump housing with an inlet and with an outlet for a fluid to be conveyed, and a rotor arranged in the pump housing to convey the fluid, the rotor configured to be rotated about an axial direction, the pump unit capable of non-contact magnetic levitation of the rotor and non-contact magnetic drive of the rotor by a stator. The pump housing has a cover part and a bottom part to enclose the cover part, the bottom part having a cylindrical cup to receive the rotor, the cylindrical cup configured to be inserted into the cup-shaped recess of the stator. Both the inlet and the outlet of the pump housing are arranged at the cover part.

Abstract: A secondary cell is provided. The secondary cell comprises a solid electrolyte to conduct oxygen ions, a positive electrode configured to be in contact with the solid electrolyte, and a negative electrode configured to be in contact with the solid electrolyte. The positive and the negative electrode comprise a mixed ionic and electronic structure for conducting oxygen ions and electrons. The mixed ionic and electronic structure comprises an ABO3 structure, wherein the A site corresponds to a first chemical element with a first covalent radius, wherein the B site corresponds to a second chemical element with a second covalent radius; and/or a CeMO2 structure, wherein the Ce is Cerium and M is a metal.

Abstract: A device for changing a pump unit of a centrifugal pump is proposed. The centrifugal pump includes the pump unit and a stator extending in an axial direction. A cup-shaped recess is provided at the first axial end of the stator into which the pump unit is capable of being inserted. The device includes an actuating device with which a mechanical force is capable of being exerted on the pump unit. The mechanical force acts in the axial direction and is directed in such a way that it separates the pump unit from the stator in the axial direction.

Abstract: A device for changing a pump unit of a centrifugal pump is proposed. The centrifugal pump includes the pump unit and a stator extending in an axial direction. A cup-shaped recess is provided at the first axial end of the stator into which the pump unit is capable of being inserted. The device includes an actuating device with which a mechanical force is capable of being exerted on the pump unit. The mechanical force acts in the axial direction and is directed in such a way that it separates the pump unit from the stator in the axial direction.

Abstract: A pump unit includes a pump housing and a rotor in the pump housing. The pump unit contactless magnetic levitating and driving the rotor. The pump housing has a bottom part and a cover, the bottom part having a cylindrical cup to receive the rotor and a substantially ring-shaped first sealing surface for a sealing interaction with the cover. The cover has a substantially ring-shaped second sealing surface for a sealing interaction with the first sealing surface. One of the first and second sealing surfaces is a ribbed surface with a radial sealing rib, which extends in the circumferential direction along the entire sealing surface, while the other of the first and second sealing surfaces is a smooth surface.

Abstract: A laser machining method includes defining at least one threshold value S0 with respect to a light-intensity-dependent first process variable F in at least one working range KAB or at a working point KAP, detecting a light-intensity-independent second process variable K during operation of a laser machine tool in the at least one working range KAB or at the working point KAP, determining a change in the first process variable F in the at least one working range KAB or at the working point KAP when process conditions change, and changing the at least one threshold value S0 to a second threshold value S0R according to the change of the first process variable F from a first value F0 to a second value F0R.

Abstract: A centrifugal pump for conveying a fluid, includes a pump housing, a rotor configured to convey the fluid disposed within the housing; and a stator which, together with the rotor, forms an electromagnetic rotary drive configured to rotate the rotor about an axial direction. The stator is a bearing and drive stator with which the rotor capable of being magnetically driven without contact and magnetically levitated without contact with respect to the stator. The rotor is passively magnetically levitated in the axial direction, and actively magnetically levitated in a radial plane perpendicular to the axial direction. The pump housing includes comprising a bottom and a cover, and the rotor is arranged in the pump housing between the bottom and the cover with respect to the axial direction. An indentation is disposed in the bottom or in the cover, the indentation being configured to generate a local turbulence.

Abstract: A laser cutting method using a laser cutting machine includes a) cutting a workpiece using a laser cutting beam having a high power along a cutting line, b) scanning the cutting line on the workpiece using a laser scanning beam having a low power or using an illumination beam, and recording scanning data, c) changing at least one parameter of a plurality of parameters the laser cutting machine, repeating steps a) and b), and evaluating the scanning data with respect to the plurality of parameters of the laser cutting machine in a control device. The scanning of the cutting line on the workpiece using the laser scanning beam of the low power is carried out during a return travel of a laser machining head.

Abstract: A beam cutting method includes conducting at least one cutting procedure while capturing at least one quality parameter. The at least one cutting procedure is intermittently implemented with an operation not subject to a closed-loop control and intermittently implemented with an operation subject to the closed-loop control. The beam cutting method further includes defining a process window in a parameter space of at least one process parameter, and choosing the at least one process parameter within the process window during the operation not subject to the closed-loop control. The at least one process parameter is allowed to be outside of the process window during the operation subject to the closed-loop control. The beam cutting method further includes adapting the process window based on changes in the at least one process parameter during the operation subject to the closed-loop control and/or changes in the at least one quality parameter.

Abstract: A method for positioning a first component relative to a second component by a robotic arm system, comprising: providing at least a first robot arm arranged to hold and move a first component relative to a second component, wherein the robot arm is arranged to be moved coordinate-based; providing at least one laser scanning unit to detect a distance between the first component and the second component; picking up the first component by the first robot arm and moving the first component relative to the second component according to a coordinate-based calculated position; detecting a distance of the first component in its coordinate-based calculated position to the second component by the laser scanning unit; providing a position correction value based on the detected distance of the first component to the second component; moving at least one of the components to an end position based on the provided position correction value.

Abstract: Multiple POS checkout system efficiency factors, based in part upon actual contents of shopping containers and time sequences of images of facial expressions of individual shoppers, are iteratively calculated using computer-based analytics responsive to randomized individual shopper arrivals at a set of point of sale (POS) checkout systems within a store. At least one of a change to a different queue or a change to a different position within a queue of at least one shopping container associated with an individual shopper is identified that results in a more consistent distribution of the calculated multiple POS checkout system efficiency factors across the set of POS checkout systems. At least one shopping container is directed to the different queue or the different position within the queue to improve overall POS checkout system efficiency across the set of POS checkout systems.

Abstract: Multiple POS checkout system efficiency factors, based in part upon actual contents of shopping containers and time sequences of images of facial expressions of individual shoppers, are iteratively calculated using computer-based analytics responsive to randomized individual shopper arrivals at a set of point of sale (POS) checkout systems within a store. At least one of a change to a different queue or a change to a different position within a queue of at least one shopping container associated with an individual shopper is identified that results in a more consistent distribution of the calculated multiple POS checkout system efficiency factors across the set of POS checkout systems. At least one shopping container is directed to the different queue or the different position within the queue to improve overall POS checkout system efficiency across the set of POS checkout systems.

Abstract: Method for encapsulating in a plastics material part of a plug-in connector that is arranged on an electrical conductor of a cable having an outer sheath, wherein a surface treatment is carried out in a region of the plug-in connector that is encapsulated, characterized in that the surface treatment is carried out with a laser.

Abstract: A centrifugal pump for conveying a fluid, includes a pump housing, a rotor configured to convey the fluid disposed within the housing; and a stator which, together with the rotor, forms an electromagnetic rotary drive configured to rotate the rotor about an axial direction. The stator is a bearing and drive stator with which the rotor capable of being magnetically driven without contact and magnetically levitated without contact with respect to the stator. The rotor is passively magnetically levitated in the axial direction, and actively magnetically levitated in a radial plane perpendicular to the axial direction. The pump housing includes comprising a bottom and a cover, and the rotor is arranged in the pump housing between the bottom and the cover with respect to the axial direction. An indentation is disposed in the bottom or in the cover, the indentation being configured to generate a local turbulence.

Abstract: A service catalog system where patterns in a service catalog (respectively corresponding to various available services) are modified based on consumption data (that is, how other users have used the services in the past). Also, a service catalog system where a pattern is added to a service catalog based on consumption data. Some embodiments use artificial intelligence (AI), machine learning (ML), cognitive processing and/or advanced analytics to modify existing patterns and/or recommend new patterns to be added to the service catalog.