Podcasts about stator

A process for complete machining of stator housings for electric motors, developed by Chemnitz machinery manufacturer NILES-SIMMONS and tool manufacturer MAPAL, has reached series production. Suppliers and OEMs now use it to produce components for drives in battery-powered electric vehicles and hybrid models. Both manufacturers recently proved in a development project that highly cost-efficient and precise production of stator housings is possible on a pick-up lathe. The parts feature external ribs for cooling circuits and are installed in the larger motor housing. Whilst NILES-SIMMONS used a converted modular lathe during development, a machine specifically designed for stator production has now entered the market. The basis for development was the vertical machining centre from the RASOMA brand, which, like NILES-SIMMONS, is an NSH Group brand. The RASOMA DZS 400-2 indicates operation with two workpiece spindles. For series production, the machine features side-mounted pickup and drop-down areas for finished parts. Components are supplied and removed via conveyor belts. With manual assembly, 10 to 20 components can be buffered through automation, allowing multiple systems to operate simultaneously while workers attend to other processes. “We've realised highly simple automation as standard. No robots or blocks on the machine are required.Operators can place parts directly on the pallet belt,” explains Thomas Lötzsch, Sales Manager at NSH TECHNOLOGY. The machine integrates easily into existing production environments, with compact installation dimensions of 7.50 by 2.60m. The RASOMA DZS 400-2 design was developed in collaboration with LTH Castings, a partner with extensive casting experience and expertise in machining complex, high-quality, thin-walled pressure die-cast aluminium components. The design, therefore, directly incorporates practical experience and user requirements. Complete machining in two clamping systems Finishing occurs on the vertical machine in two clamping systems. A clamping device picks up the workpiece from above and moves it to various machining stations. At a re-clamping station, the part is rotated 180 degrees and picked up by the second workpiece spindle for finishing. During second clamping, machining of the next component begins simultaneously at the first pick-up. The process begins with pre-roughing the component's various inner diameters. The tool remains stationary whilst the workpiece rotates. “Unlike conventional turning with a blade, machining with a four-blade ISO boring tool on an HSK-A 100 spindle takes just a quarter of the productive time,” says MAPAL regional sales manager André Ranke. The inner tool also rotates. Tool speed and workpiece speed differences produce cutting speed at the inner blades. The bell-shaped outer tool remains stationary. The component is placed in the gap between inner and outer tools for machining. This patented process reduces forces on the clamping system, avoiding the need for complex workpiece clamping devices with vibration-damping for precise machining of thin-walled components. “When designing the tool, particular attention was paid to the large chip volume and significant forces generated, as simultaneous inner and outer diameter machining is unusual,” explains Michael Kucher, Component Manager E-Mobility at MAPAL. During finishing, only the fine boring tool is driven whilst the component remains stationary. This prevents non-rotationally symmetrical workpiece shapes from causing material imbalances with negative impacts. The workpiece is then re-clamped and the outer area previously clamped in the flange area is machined. The re-clamping station can also relax the material before fine boring. The machine has two tool revolvers for driven tools carrying out further machining based on component requirements. Faster and more stable than expected “The RASOMA DZS 400-2 combines turning speed for pre-machining inner and outer contours with fine boring accuracy for finishing inner contours,” says Daniel Pilz, Project Leader at NSH TECHNOLOGY. With machine, tool technology, and process serialisation, positive prototype results were improved further. Process reliability exceeded expectations, allowing the targeted cutting speed of 700 m/min to be increased. “For aluminium machining, NILES-SIMMONS' experience positively impacts tool technology and machine reliability,” explains Michael Kucher. The RASOMA DZS 400-2 achieves much shorter chip-to-chip time than milling centres because all tools are already in the working area. This reduces non-productive time. Using this technology, studies anticipated 50% cycle time reduction. Parts were initially measured, current guidance recommends testing one part per shift. Daniel Pilz uses figures to demonstrate this is more than adequate: “The RASOMA DZS 400-2 with special MAPAL tools achieves a process capability index over 1.67 for critical characteristics such as cylinder shape, diameter, and concentricity, meeting industrial specifications.” Customers already using the machine achieve annual outputs of up to 180,000 components in a three-shift operation. Success at high volumes LTH Castings in Slovenia is among the first to adopt the serial process for stator production on the RASOMA DZS 400-2. The traditional casting company has over 100 casting cells and processes raw parts on more than 250 CNC machining centres. Around 3,800 employees work across six sites. Dr Primož Ogrinec, CTO of LTH Castings, says: “With our all-in-one solutions from design to series production, we're a key strategic partner for the automotive industry. Our range includes components for drives, motors for battery-powered electric and hybrid vehicles, steering and braking systems.” Robots load and unload the RASOMA DZS 400-2 machines in ultra-modern production. Like most automotive suppliers, LTH Castings produces components for various vehicle models. The RASOMA DZS 400-2's flexibility, which only requires retooling of the clamping device and tool, makes it suitable for stator housing production. “With a single system using the new process, an optimal solution, tailored to manufacturer-specific needs in both quantity and quality, was developed and brought to series production maturity,” says André Ranke. Stator housing production can be carried out for diameters up to 500mm and components up to 500mm in length. “Every housing type we've seen can be manufactured on the RASOMA DZS 400-2—and we've seen plenty,” says Thomas Lötzsch. The project team was surprised when a major car manufacturer's housing design required an internal component indentation. The sample component from MAPAL, specially designed for the process, didn't present this challenge. Yet MAPAL quickly had a joint solution ready with NSH Group specialists: instead of the tried-and-tested fine boring tool, an ultra-precise actuating tool with four slides from MAPAL's product portfolio created the desired inner contour. Machine-side, a connection designed in coordination with MAPAL was ready within days and achieved series production maturity during the ongoing order. With tightly networked development structures, both companies react quickly to newly developed contours. New benchmark for low costs per part The RASOMA DZS 400-2 with MAPAL tool technology has become established in series production, addressing quality issues seen on traditional turning and milling machines. Thomas Lötzsch describes cases where required shape and position tolerances were not met with reliable processes, resulting in up to 50% scrap. When quality was sufficient, cycle times were inefficient, leading to higher workpiece costs. A proven manufacturing process was missing. As price competition is tough among automotive suppliers, RASOMA DZS 400-2 development focused on minimising unit costs from the outset. This goal was achieved through high machine availability, short cycle times, machined component quality, and production with reliable processes.

Wie Drehstrommotoren aufgebaut sind und arbeiten, das ist nicht sonderlich kompliziert. Stator und Rotor bilden zusammen den groben Aufbau und durch die drei Phasen unseres Drehstromnetzes, welche um 120° Phasenverschoben sind, entsteht das sog. Drehfeld, welches den Rotor in eine Drehbewegung bring.Aber leider ist ein Drehstromanschluss nicht der Standard in jedem Raum. Aber dennoch braucht es Motoren die sich drehen und mit denen gearbeitet werden muss. Wie kann man also die Einphasen-Wechselspannung unserer Schutzkontaktsteckdosen nutzen, um das nötige Drehfeld zu erzeugen?Giancarlo the Teacher klärt in dieser Folge des Elektrotechnik Podcast auf, wie ein deutsch-amerikanischer Ingenieur es geschafft hat, mittels eines Kondensators und ein wenig Erfindergeist Abhilfe zu schaffen, sodass jeder Haushalt bis heute von der Antriebstechnik profitieren kann.https://www.paypal.com/donate/?hosted_button_id=9UW85PQWLBWZSSupport this podcast at — https://redcircle.com/elektrotechnik-podcast/donationsAdvertising Inquiries: https://redcircle.com/brandsPrivacy & Opt-Out: https://redcircle.com/privacy

Generators and motors are exposed to various stress factors during operation, which can cause damaging faults. Periodic tests are recommended to determine whether machine components must be repaired or replaced. In this episode, OMICRON rotating machines testing expert, Fabian Öttl, talks about electromagnetic imperfection measurements (also known as ELCID testing), which are performed to assess the condition of and detect damaging faults in the stator cores of large machines.

What is a cam? How do cams fit into mechanical systems, and why do we use them? See omnystudio.com/listener for privacy information.

To prepare for an upcoming interview with a pilot who needs a scooter to bring on the airplane and get around towns he is unfamiliar with, Dagwood relied on the Electric Scooter Guide's "Top 10 best lightweight Scooters" video to narrow down the field of candidates.Dagwood also comments on fat tire scooters as we take a look at the Stator LE from NantMobility which has a few unique design features and costs around 4K USD.ESG Lightweights:https://youtu.be/HC2TIxWSM2UStator LE:https://youtu.be/5nyp55tQPK8

Kyle runs us through a list of nearly free mods he has done to his bike to see if they'll make it past an automotive engineer. Turns out he's onto something and these really are mods you actually should do! Here is the list to remind you after the show! Silicone shifter lever end Keihin carb fuel bowl drain holes DDS clutch easier pull lever Silicone the bolt hole on the top of the chain slider Cable from neg. battery to starter Stator side wet mod (Bendix Bikes) Upper Carb hoses into air box/up high Chain master link clip on inside Hockey tape on levers for cold weather steering stops! Small feet brake tip hack --- Send in a voice message: https://anchor.fm/hardendurohosers/message

Industry Pro Tips & Tricks - Brian talks with the Experts at Rick's Motorsport Electrics on the ALL NEW Double Shot Stator for Polaris RZR/General/Ranger, Correct Use of Di-Electric Grease and Battery Tender vs. Charger

Entrevue avec Bruno Pitard, spécialiste des vaccins à ADN et à ARN, sur l'efficacité du vaccin à ARN messager, qui n'a jamais été utilisé chez l'humain; reportage de Chantal Srivastava sur une nouvelle Boîte bleue permettant de mesurer à distance les émotions des utilisateurs de technologies; reportage de Marie-Pier Elie sur la vitesse avec laquelle nous voyageons dans le cosmos et sur la direction que ces voyages prennent; reportage de Gino Harel à propos d'autopsies réalisées sur des personnes décédées à cause de la COVID-19;chronique de Renaud Manuguerra sur l'histoire de l'éclairage au néon; entrevue avec la pédiatre Fatima Kakkar à propos des conséquences de la COVID-19sur les enfants; et reportage d'Alexandre Touchette sur un superstatoréacteur conçu en Chine qui peut atteindre la vitesse de 19000kilomètres-heure.

durée : 00:58:18 - Par les temps qui courent - par : Marie Richeux - Une exposition lui est consacrée à la BPI du Centre Pompidou, jusqu’au 5 mars 2018 : "Jean Echenoz, Roman, Rotor, Stator". L’univers de l’écrivain y est représenté à travers un ensemble d'archives ; tapuscrits, manuscrits originaux, carnets de notes, réflexions sur l’écriture, photographies, etc. - réalisation : Lise-Marie Barré, Charlotte Roux - invités : Jean Echenoz Ecrivain

durée : 00:58:18 - Par les temps qui courent - par : Marie Richeux - Une exposition lui est consacrée à la BPI du Centre Pompidou, jusqu’au 5 mars 2018 : "Jean Echenoz, Roman, Rotor, Stator". L’univers de l’écrivain y est représenté à travers un ensemble d'archives ; tapuscrits, manuscrits originaux, carnets de notes, réflexions sur l’écriture, photographies, etc. - réalisation : Lise-Marie Barré, Charlotte Roux - invités : Jean Echenoz Ecrivain

VSR004 Rotor/Stator EP 1. Dailiv & Cryptogrpahic - Rotor 2. Dailiv & Cryptogrpahic - Stator Produced by @Cryptographic & @Dailiv Mixed by Virulent Green Mastered by Richie @ binaryfeedback.com Cover art/design by Dasha Efflorescence Patreon label's campaign: patreon.com/vykhodsily_podcast Released by: Vykhod Sily Recordings Release date: 27-09-2019

Tracks produced by Dailiv & Cryptographic Release: 27-09-2019

A jó időre való tekintettel, most egy tömörebb description-t kaptok, hogy annyival is kevesebb időt töltsetek a képernyőtök nézegetésével, inkább pattanjatok rollerre, biciklire, görkörira, monociklire, bármire, aminek van kereke, és hallgassátok az adást a szabadban. Ma betekintést nyerhettek a kulisszák mögé, és a palást alá. Kiderül, hogy mi derül ki száz kilométer alatt, és miket képzelünk a következő százról. Ha még nincs rolleretek, szerezzetek egyet: Razor A5 Air a mai ajánlatunk Ha nem tudtok rollerezni, JP megtanít: Ha szeretnétek tovább álmodozni, itt a Stator, ami nem kapható, de jól néz ki Rollerezéshez, sőt minden egyéb élethelyzetre is, itt találtok zsákot, szütyőt, táskát, tarsolyt. Ha már visszaértetek a gurulásból, hallgassatok Trónok harca zenét Keressetek bennünket mindenfelé, de itt vagyunk leginkább megtalálhatóak: Laci instán, Tomi twitteren, van hashtagünk is mindkét helyen, sőt email címünk is: vegtelensegfiai@gmail.com, ahova várjuk szeretettel a hozzászólásokat, meglátásokat, meg amit csak ki tudtok találni.

Episode 14, in which we talk with youthful traveller and college student Evan Laing. The news is back, but it's all Harley-Davidson this episode, with news about their recent earnings call, plant closures and an exciting new motorcycle on their horizon. Chasing the Horizon is a podcast by, for and about motorcyclists brought to you by the BMW Motorcycle Owners of America. Learn more at our NEW WEBSITE horizon.bmwmoa.org and sign up for our mailing list at tinyletter.com/chasingthehorizon.

Gudrun unterhält sich mit Tabitha Hoffmann über ihre im Dezember 2017 vorgelegte Masterarbeit mit dem Titel: On the Applicability of Computational Fluid Dynamics on the Determination of Elements in the Thermal Circuit of Electrical Machines. Das Projekt war eine Zusammenarbeit mit der Firma SEW-Eurodrive in Bruchsal. Das Temperaturverhalten von Elektromotoren ist von großem Interesse, denn kennt man die Temperaturverteilung im Elektromotor, kann man Aussagen über das Betriebsverhalten treffen und einzelne Komponenten effektiv vor Überhitzung schützen. Besonders interessant ist dabei der Raum zwischen Rotor und Stator der elektrischen Maschine, der als Luftspalt bezeichnet wird. Um die Auswirkung von Geometrieänderungen auf den thermischen Widerstand am Luftspalt abschätzen zu können, könnten ergänzende Computersimulationen große Vorteile bringen. Im Rahmen der Arbeit von Tabitha wird erstmals prinzipiell untersucht, ob aktuell die numerische Strömungsrechnung (engl. Computational Fluid Dynamics, kurz CFD) - gekoppelt mit Wärmeübertragungssimulationen - den thermischen Widerstand am Luftspalt genau genug bestimmen kann, um hier von Nutzen zu sein. In erster Näherung lässt sich der Luftspalt relativ elementar als Ringraum darstellen. Noch interessanter wären natürlich Ergebnisse, die auf einer möglichst präzisen Geometrienachbildung des Luftspaltes im Computer beruhen. Eine umfangreiche experimentelle wie theoretische Studie liegt zum Glück in Form der Dissertation von Becker aus dem Jahr 1957 vor. Beckers experimentelle Daten sind fundiert und präzise und bilden somit eine gute Grundlage für die Validierung der Simulationsergebnisse in der Masterarbeit. Exemplarisch werden von Tabitha zwei typische CFD-Zugänge gewählt: Einerseits Ansys CFX, da es ein weit verbreitetes und bei SEW gut eingeführtes kommerzielles Softwarepaket ist (es arbeitet als Black box auf der Basis von Finite-Volumen-Methoden ) und andererseits OpenLB, welches eine open source Forschungssoftware ist (auf der Basis von Lattice Boltzmann Methoden (LBM)), die in der Gruppe von Mathias Krause ständig weiterentwickelt wird. Beide Softwarepakete haben je eigene Vor- und Nachteile und stellen zwei typische Fälle dar. Das betrifft z. B. die anwenderfreundliche Benutzeroberfläche in einer kommerziellen Software, die jedoch auf den konkreten Anwendungsfall nur eingeschränkt speziell zugeschnitten werden kann vs. ein in der Schnittstelle nicht so ausgereiftes Produkt, für das jedoch recht schnell konkrete Module für das vorliegende Problem programmiert werden können. Außerdem sind auch die numerischen Paradigmen beider Pakete grundlegend unterschiedlich. Ansys CFX ist klassisch auf die numerische Lösung von kontinuierlich formulierten partiellen Differentialgleichungen spezialisiert, während LBM ein diskretes Modell für Strömung wählt und dieses dynamisch entfaltet. Als möglichst einfacher Einstieg in die Thematik wird in der Arbeit zunächst von Wärmeübertragung zwischen konzentrischen Zylindern mit rotierendem Innenzylinder ausgegangen und das Problem ohne axiale Strömung betrachtet. Man spricht von einer Taylor-Couette Strömung. Ist die Geschwindigkeiten des inneren Zylinders hoch genug, entstehen Taylor-Wirbel. Die Simulationsergebnisse wurden mit den Messergebnissen von Becker und der Theorie zur freien Konvektion in horizontalen Ringen validiert. Anschließend wurden die Löser auf eine realistischere Geometrie angewendet mit Schlitzen am Stator (allerdings wieder ohne axiale Strömung). Zusammenfassend kann gesagt werden, dass die Simulationsergebnisse in guter Übereinstimmung mit den Messergebnissen und der Theorie sind, aber nicht genau die gleiche kritische Taylorzahl liefern. Ein grundlegendes Problem für beide numerische Zugänge ist, dass der Luftspalt im Vergleich zu den Radien von Rotor und Stator sehr klein ist. Literatur und weiterführende Informationen ANSYS, Inc.: Innovative Turbulence Modeling: SST Model in ANSYS CFX/ ANSYS Inc. Version: 2011, Forschungsbericht ANSYS, Inc.: Ansys CFX Documentation 25th November 2017 Batchelor, G. K.: An introduction to fluid dynamics. Cambridge Univ. Press 1967. Becker, K. M.: An experimental and theoretical study of heat transfer in an annulus with an inner rotating cylinder, M.I.T., Diss., 1957 Chorin, A. J. ; Marsden, J. E.: A mathematical introduction to fluid mechanics. 2. ed. Springer Lancial, N. e.a.: Taylor-Couette-Poiseuille flow and heat transfer in an annular channel with a slotted rotor. In: International Journal of Thermal Sciences 112 (2017), Nr. Supplement C, 92 - 103. Hydrodynamische Instabilität

Fri, 1 Jan 1677 12:00:00 +0100 http://epub.ub.uni-muenchen.de/2810/ http://epub.ub.uni-muenchen.de/2810/1/2Vetus118.pdf Hagen, Joachim Heinrich Hagen, Joachim Heinrich: Quod Deus Optimus Maximus, Rerum Humanarum Stator Et Assertor Unicus, Serenissimae Domui Ac Genti Brandenburgicae, Omnes