Fachbereich Maschinenbau und Mechatronik
Refine
Year of publication
Institute
- Fachbereich Maschinenbau und Mechatronik (880) (remove)
Document Type
- Article (493)
- Conference Proceeding (209)
- Book (99)
- Part of a Book (32)
- Lecture (21)
- Report (8)
- Bachelor Thesis (5)
- Contribution to a Periodical (3)
- Doctoral Thesis (3)
- Master's Thesis (2)
Keywords
- Rapid Prototyping (8)
- Rapid prototyping (6)
- Übungsklausur (5)
- Additive manufacturing (4)
- Gamification (4)
- additive manufacturing (4)
- Fertigungsverfahren (3)
- Mikrosystemtechnik (3)
- Regelungstechnik (3)
- SLM (3)
- 3D-Printing (2)
- Actuators (2)
- Additive Manufacturing (2)
- Aktor (2)
- Aktoren (2)
- Brake set-up (2)
- Digital Twin (2)
- Freight rail (2)
- Geschichte (2)
- IO-Link (2)
- L-PBF (2)
- LPBF (2)
- Lasermesstechnik (2)
- Lasertechnologie (2)
- Microfabrication (2)
- Rapid Manufacturing (2)
- Sensor (2)
- Sensoren (2)
- Sensores (2)
- Stereolithographie (2)
- Virtuelles Laboratorium (2)
- Werkstoffkunde (2)
- factory planning (2)
- fused filament fabrication (2)
- manufacturing flexibility (2)
- rapid manufacturing (2)
- rapid tooling (2)
- 10BASE-T1L (1)
- 316L (1)
- 3D nonlinear finite element model (1)
- 3D printing (1)
- 3D-printing (1)
- 802.15.4 (1)
- Abtragen (1)
- Adaptive Systems (1)
- Arduino (1)
- Assembly (1)
- Assessment (1)
- Asset Administration Shell (1)
- Augmented Reality (1)
- Balanced hypergraph (1)
- Biegeumformen (1)
- Binder Jetting (1)
- Blended-Learning (1)
- Bluetooth (1)
- Brake test (1)
- Braking curves (1)
- Business Simulations (1)
- Collaborative robot (1)
- Computersimulation (1)
- Data-driven models (1)
- Designpraxis (1)
- Digital Twins (1)
- Digital manufacturing (1)
- Digitale Regelungstechnik (1)
- Directed Energy Deposition (1)
- Distributed Control Systems, (1)
- Driver assistance system (1)
- Druck-Umformen (1)
- Drucksensor (1)
- Duality (1)
- E-Learning (1)
- Effective modal mass (1)
- Einbetten in das Internet der Dinge (1)
- Elektronik (1)
- Elektrotechnik (1)
- Energietechnik (1)
- Error Recovery (1)
- Ethernet (1)
- Eutectic Silver Copper alloy (1)
- Excel und VBA (1)
- Extrusionsverfahren (1)
- FLM (1)
- Fertigungsprozess (1)
- Field device (1)
- Funktionsmodelle (1)
- Fused deposition modelling (1)
- Fuzzy Regelung (1)
- Generative Fertigungstechnik (1)
- Gießen (1)
- Gießharzwerkzeuge (1)
- Glass powder (1)
- Hall’s Theorem (1)
- Hand-on-training (1)
- Hochschule / Lehre / Evaluation (1)
- Human factors (1)
- Human-Robot interaction (1)
- Humidity (1)
- Hypergraph (1)
- Incident analysis (1)
- Industrial Automation Technology, (1)
- Industrial Communication (1)
- Industry 4.0 (1)
- Innenströmung (1)
- Kawasaki (1)
- Knowledge Transfer (1)
- Koenig’s Theorem (1)
- LabVIEW (1)
- Laminat Verfahren (1)
- Laminated-Object-Manufacturing (1)
- Laser (1)
- Laser processing (1)
- Laser-Doppler-Velozimetrie (1)
- Laser-Powder Bed Fusion (1)
- Laseroptische Strömungsmessung (1)
- Lasersintern (1)
- Laserstrahlsintern (1)
- Lernprogramm (1)
- Level system (1)
- MAG-Schweißen (1)
- MEMS ; education and training foundry (1)
- MIG-Schweißen (1)
- MST (1)
- Matching (1)
- Materialbearbeitung (1)
- Mechatronik (1)
- Melting (1)
- Minimal-Ansatz für Embedded-Systeme (1)
- Modellkanäle (1)
- Multi-agent Systems (1)
- Natural frequency (1)
- Oberflächentechnik (1)
- PROFINET (1)
- Path planning (1)
- Porositat (1)
- Powder Material (1)
- Prediction of molecular features (1)
- Produktentstehung (1)
- Produktenwicklung (1)
- Protein structure complexity (1)
- Prototypen (1)
- Prototyper (1)
- Prototyping (1)
- Pulvermetallurgie (1)
- Quantitative structure activity relationship (1)
- Rapid Technologie (1)
- Rapid manufacturing (1)
- Rapid prototyping <Fertigung> (1)
- Rapid-prototyping (1)
- Reinraumpraktikum (1)
- Response Surface Method (1)
- Roboter (1)
- Roboter-Schweißen (1)
- Robotik (1)
- SOA (1)
- Safety concept (1)
- Scalar parameters (1)
- Schweißen (1)
- Selective Laser Melting (SLM) (1)
- Selektives Laser Schmelzen (1)
- Sensors (1)
- Serious Games (1)
- Shape and surface properties (1)
- Shunting (1)
- Silber (1)
- Spanlose Fertigungsverfahren (1)
- Strömungsanalyse (1)
- Support System (1)
- Suspension bridge (1)
- Technologietransfer (1)
- Thermal conductivity (1)
- Thin shell finite elements (1)
- Train composition (1)
- Training (1)
- Umformverfahren (1)
- Urformen (1)
- User study (1)
- VDI-Wärmeatlas (1)
- VM (1)
- Vakuumgießen (1)
- Vertex cover (1)
- Virtual Technology Lab (1)
- Virtual reality (1)
- Virtuelle Maschine (1)
- Virtuelle Sensor-Fertigung (1)
- Virtuelles Labor (1)
- Werkzeuge (1)
- Werkzeugeinsätze (1)
- Wireless Networks (1)
- Workspace monitoring (1)
- Wärmeübertrager (1)
- Wärmeübertragung (1)
- Zugdruckumformen (1)
- Zugumformen (1)
- adaptive systems (1)
- additive manufactureing (1)
- assistance system (1)
- autonomous navigation (1)
- batch reproducibility (1)
- biopharmaceutical production process (1)
- blended learning (1)
- cobald chrome (1)
- compression behavior (1)
- crystallization (1)
- cyber-physical production systems (1)
- dental bridges (1)
- digital factory (1)
- downstream processing design (1)
- environmental correlation (1)
- event-based simulation (1)
- experiment quality (1)
- fluorescent protein carrier (1)
- gamification (1)
- generative Fertigungsverfahren (1)
- glass (1)
- greenhouse cultivation (1)
- hands-on cleanroom training (1)
- hybrid model validation (1)
- industrial agents (1)
- infill strategy (1)
- large-scale inspection (1)
- laser based powder fusion (1)
- manufacturing (1)
- manufacturing data model (1)
- manufacturing process (1)
- mechatronics (1)
- mix flexibility (1)
- mobile manipulation (1)
- mobile robots (1)
- multi-agent systems (1)
- plant molecular farming (1)
- polyetheretherketone (1)
- polyetheretherketone (PEEK) (1)
- product development (1)
- product emergence (1)
- production planning and control (1)
- prototyper (1)
- prototypes (1)
- scan strategy (1)
- service-oriented architectures (1)
- surface-orthogonal path planning (1)
- technology diffusion (1)
- technology planning (1)
- technology transfer (1)
- virtual (1)
- virtual clean room (1)
- virtual machines (1)
- virtual sensor fabrication (1)
- virtuelle Maschinen (1)
- volume flexibility (1)
- welded joint (1)
- welding (1)
- wind turbine production (1)
- working models (1)
Application of polymers in textile reinforced concrete : from the interface to construction elements
(2006)
Trotz fortschreitender Automatisierung bleiben manuelle Tätigkeiten ein wichtiger Baustein der Fertigung kundenindividueller Produkte. Um die Mitarbeiter(innen) zu unterstützen und um eine effiziente Arbeit zu ermöglichen, werden zunehmend auf Augmented Reality (AR) basierende Systeme eingesetzt. Die vorgestellte Arbeit konzentriert sich auf die Entwicklung ganzheitlicher AR-Arbeitsplätze für den Einsatz in kleinen und mittleren Unternehmen (KMU). Das entwickelte AR- Handarbeitskonzept beinhaltet eine Just-in-time-Darstellung der Arbeitsaufgaben auf Werkstücken mit automatisierter Fertigungskontrolle. Als
Reaktion auf kurze Produktlebenszyklen und hohe Produktvielfalten sind alle Komponenten auf maximale Flexibilität ausgelegt. Ein Umrüsten auf neue Produkte kann innerhalb von Minuten erfolgen.
The implementation of IO-Link in the automation industry has increased over the years. Its main advantage is it offers a digital point-to-point plugand-play interface for any type of device or application. This simplifies the communication between devices and increases productivity with its different features like self-parametrization and maintenance. However, its complete potential is not always used.
The aim of this paper is to create an Arduino based framework for the development of generic IO-Link devices and increase its implementation for rapid prototyping. By generating the IO device description file (IODD) from a graphical user interface, and further customizable options for the device application, the end-user can intuitively develop generic IO-Link devices. The peculiarity of this framework relies on its simplicity and abstraction which allows to implement any sensor functionality and virtually connect any type of device to an IO-Link master. This work consists of the general overview of the framework, the technical background of its development and a proof of concept which demonstrates the workflow for its implementation.
In den letzten Jahren hat der Einsatz von graphischen Datenverarbeitungsanlagen auf dem technischen, naturwissenschaftlichen und kommerziellen Sektor immer mehr an allgemeinem Interesse und Bedeutung gewonnen. Diese Entwicklung hat neue Aspekte und Probleme in bezug auf Anwendungsmöglichkeiten, Programmierung, Datenstrukturen sowie der Hard- und Software dieser Anlagen hervorgerufen. Zur Zeit werden von verschiedenen Institutionen die Einsatzmöglichkeiten graphischer Datenverarbeitungsanlagen in den Funktionsbereichen Konstruktion und Arbeitsvorbereitung untersucht. Der folgende Beitrag zeigt eine kurze Übersicht über die verschiedenen programmiertechnischen Probleme sowie eine Auswahl von Programmbeispielen, die am Laboratorium für Werkzeugmaschinen und Betriebslehre der RWTH Aachen entwickelt wurden. Bei den Bildschirmsystemen wird zwischen zwei Arten unterschieden. Aktive Bildschirmeinheiten besitzen als äußeres Merkmal einen Lichtstift und eine Funktionstastatur zur Programmverzweigung. Passive Bildschirmeinheiten lassen demgegenüber einen Eingriff in das Programm in der oben aufgeführten Form nicht zu. Zwischen diesen extremen Formen gibt es noch eine Reihe Mischformen. Die in Aachen zur Verfügung stehende Anlage arbeitet aktiv und wird im nachfolgenden Kapitel näher beschrieben.
Für Auftragschweißaufgaben existiert eine Vielzahl an verfahrenstechnischen
Prozessvarianten, die je nach Charakteristik und Anwendungsfall
ausgewählt werden. Ein Nachteil der vorwiegend verwendeten Metall-
Schutzgasschweißprozesse (MSG) für das Auftragschweißen ist durch die
direkte Kopplung von Drahtvorschub zu Energieeintrag gegeben. Die vorgestellte
Zweidraht-Prozessvariante kann durch die Ausbildung eines übertragenen
und eines nicht-übertragenen Lichtbogens die elektrische Leistung
beider Lichtbögen variieren und damit einen direkten Einfluss auf
die Prozessgrößen Abschmelzleistung und Aufschmelzgrad nehmen. Im
Speziellen besteht über die Entkopplung von Drahtvorschub zu Schweißstromstärke
die Möglichkeit eines niederenergetischen Betriebs trotz hoher
Drahtvorschubgeschwindigkeit. Damit lassen sich Aufschmelzgrade
unter 2% umsetzen und Abschmelzleistungen bis zu 15 kg/h realisieren.
Eine SPS im Kraftfahrzeug? Das geht ja gar nicht – da gibt es doch all die Hersteller für Kfz-Steuergeräte, die konfigurierbare Hardware anbieten. Im Prinzip ja, aber leider sind gerade die Sensoren oder Aktoren nicht ansteuerbar, die der Entwickler genau für sein aktuelles Projekt benötigt. Dieser Beitrag gibt einen kleinen Einblick in neue Möglichkeiten des Rapid Prototyping für mechatronische Systeme auf der Basis von Speicherprogrammierbaren Steuerungen (SPS).
We present an automated pipeline for the generation of synthetic datasets for six-dimension (6D) object pose estimation. Therefore, a completely automated generation process based on predefined settings is developed, which enables the user to create large datasets with a minimum of interaction and which is feasible for applications with a high object variance. The pipeline is based on the Unreal 4 (UE4) game engine and provides a high variation for domain randomization, such as object appearance, ambient lighting, camera-object transformation and distractor density. In addition to the object pose and bounding box, the metadata includes all randomization parameters, which enables further studies on randomization parameter tuning. The developed workflow is adaptable to other 3D objects and UE4 environments. An exemplary dataset is provided including five objects of the Yale-CMU-Berkeley (YCB) object set. The datasets consist of 6 million subsegments using 97 rendering locations in 12 different UE4 environments. Each dataset subsegment includes one RGB image, one depth image and one class segmentation image at pixel-level.
Das Forschungsprojekt Produktionseffizienz in der Kleinserie (ProeK) erarbeitet kostengünstige und effiziente Lösungsansätze für Prozessketten im Zukunftsfeld der Elektromobilität. Das Teilprojekt Karosserie setzt diese Zielsetzung durch innovative und praxisorientierte Produkt- und Prozesskonzepte mit neuartigen bauteilintegrierten Vorrichtungsfunktionen (BiV) um. Im Teilprojekt Außenhaut sollen Toleranzen adaptiv durch Anpassungen der Prozessparameter sowie Bauteilmanipulation kompensiert werden.
Berücksichtigung von No Fault Found im Diagnose- und Instandhaltungssystem von Schienenfahrzeugen
(2020)
Intermittierende und nicht reproduzierbare Fehler, auch als No Fault Found bezeichnet, treten in praktisch allen Bereichen auf und sorgen für hohe Kosten. Diese sind häufig auf unpräzise Fehlerbeschreibungen zurückzuführen. Im vorliegenden Beitrag werden Anpassungen der Vorgehensweise bei der Entwicklung und Anpassungen des Diagnosesystems vorgeschlagen.
Bluetooth in der Klemme
(2008)
The first and last mile of a railway journey, in both freight and transit applications, constitutes a high effort and is either non-productive (e.g. in the case of depot operations) or highly inefficient (e.g. in industrial railways). These parts are typically managed on-sight, i.e. with no signalling and train protection systems ensuring the freedom of movement. This is possible due to the rather short braking distances of individual vehicles and shunting consists. The present article analyses the braking behaviour of such shunting units. For this purpose, a dedicated model is developed. It is calibrated on published results of brake tests and validated against a high-definition model for low-speed applications. Based on this model, multiple simulations are executed to obtain a Monte Carlo simulation of the resulting braking distances. Based on the distribution properties and established safety levels, the risk of exceeding certain braking distances is evaluated and maximum braking distances are derived. Together with certain parameters of the system, these can serve in the design and safety assessment of driver assistance systems and automation of these processes.
Bussysteme
(2006)
CAD/CAM - Compass Maschinenbau. Ein Leitfaden für die optimale Systemauswahl CAD/CNC/CAM/CAE/PPS
(1993)
Today, the assembly of laser systems requires a large share of manual operations due to its complexity regarding the optimal alignment of optics. Although the feasibility of automated alignment of laser optics has been shown in research labs, the development effort for the automation of assembly does not meet economic requirements – especially for low-volume laser production. This paper presents a model-based and sensor-integrated assembly execution approach for flexible assembly cells consisting of a macro-positioner covering a large workspace and a compact micromanipulator with camera attached to the positioner. In order to make full use of available models from computer-aided design (CAD) and optical simulation, sensor systems at different levels of accuracy are used for matching perceived information with model data. This approach is named "chain of refined perception", and it allows for automated planning of complex assembly tasks along all major phases of assembly such as collision-free path planning, part feeding, and active and passive alignment. The focus of the paper is put on the in-process image-based metrology and information extraction used for identifying and calibrating local coordinate systems as well as the exploitation of that information for a part feeding process for micro-optics. Results will be presented regarding the processes of automated calibration of the robot camera as well as the local coordinate systems of part feeding area and robot base.
Chancen im Maschinenbau
(2002)
The objectives of the present work are to characterize the Gas Metal Arc Welding process of DP 600 sheet steel and to summarize the modelling techniques. The time-temperature evolution during the welding cycle was measured experimentally and modelled with the softwaretool SimWeld. To model the phase transformations during the welding cycle dilatometer tests were done to quantify the parameters for phase field modelling by MICRESS®. The important input parameters are interface mobility, nucleation density, etc. A contribution was made to include austenite to bainite transformation in MICRESS®. This is useful to predict the microstructure in the fast cooling segments. The phase transformation model is capable to predict the microstructure along the heating and cooling cycles of welding. Tensile tests have shown the evidence of failure at the heat affected zone, which has the ferrite-tempered martensite microstructure.
The manufacturing share of laser powder bed fusion (L-PBF) increases in industrial application, but still many process steps are manually operated. Additionally, it is not possible to achieve tight dimensional tolerances or low surfaces roughness. Hence, a process chain has to be set up to combine additive manufacturing (AM) with further machining technologies. To achieve a continuous workpiece flow as basis for further industrialization of L-PBF, the paper presents a novel substrate system and its application on L-PBF machines and post-processing. The substrate system consists of a zero-point clamping system and a matrix-like interface of contact pins to be substantially connected to the workpiece within the L-PBF process.
Composite improvement of textile reinforced concrete by polymeric impregnation of the textiles
(2006)
In times of short product life cycles, additive manufacturing and rapid tooling are important methods to make tool development and manufacturing more efficient. High-performance polymers are the key to mold production for prototypes and small series. However, the high temperatures during vulcanization injection molding cause thermal aging and can impair service life. The extent to which the thermal stress over the entire process chain stresses the material and whether it leads to irreversible material aging is evaluated. To this end, a mold made of PEEK is fabricated using fused filament fabrication and examined for its potential application. The mold is heated to 200 ◦C, filled with rubber, and cured. A differential scanning calorimetry analysis of each process step illustrates the crystallization behavior and first indicates the material resistance. It shows distinct cold crystallization regions at a build chamber temperature of 90 ◦C. At an ambient temperature above Tg, crystallization of 30% is achieved, and cold crystallization no longer occurs. Additional tensile tests show a decrease in tensile strength after ten days of thermal aging. The steady decrease in recrystallization temperature indicates degradation of the additives. However, the tensile tests reveal steady embrittlement of the material due to increasing crosslinking.