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Power Tools

In the research field of power tools, we are investigating methods to support the development process of handheld power tools. The term power tool is understood to mean the system made up of handheld tools (hammer drills, angle grinders etc.), tools (drills, grinding wheels etc.) and consumables (dowls, screws etc.). We focus on the development of measurement, modeling and validation methods. We use the system-independent IPEK-X-in-the-loop approach.

In the development of measurement, modeling and validation methods, the understanding of the overall system, consisting of user, machine, environment and application, plays a central role. This understanding is the basis for the derivation of the design targets to the machine elements used in the product and a driver for innovations in hand-held power tools.


Research Focus

 

  • Investigation of the interaction between user and hand-held device
  • Validation environments for power tools and their components
  • Research and Development of workpiece substitution systems
  • Investigation of impact torque procedures
  • Machine Learning and Industry 4.0 in the environment of hand-held power tools

 

Systems

 

  • System Power tools
    • angle grinders, hammer drills, cordless drill drivers, impact drivers, direct fastening tools etc.
  • Subsystems
    • Gear units
    • Clutch systems
    • Drive motors
    • Commutator systems
    • Mechatronic systems
    • Battery systems

 

Methods

 

Methods of validation for:

  • Hand-held power tools
  • Subsystems and components of hand-held power tools
  • Tools and consumables
  • Identification and modeling of the interaction with the user
  • Identification and modelling of the interaction with the environment
  • Identification of functional quality and usability

 

  XiL-Framework for the consistent validation of technical systems:

  • Innovative simulation environments
  • Innovative testing environments
  • Innovative systems to substitute the systems user and workpiece

 

Processes

  • Development and validation processes
  • Processes for evaluating the usability of power tools

 

Equipment

 

Test benches and laboratories

 

  • Test benches of user interaction for investigation of user properties
  • Test benches of automatised power tools for robot-controlled device validation
  • Test benches of power tool components
  • Scaled-components-in-the-Loop testbench for the development of performance scaling models
  • Power tool test center for hand-held tests and evaluation of usability
  • Laboratory for construction and wear analysis of power tools and their components

 

     Portable Measurement equipment
 

  • Portable capacitive pressure measuring foils for force measurement between user and hand-held power tool
  • Force measurement in machine handles for force measurement between user and hand-held power tool
  • 6-axis force plate for measuring the forces from the user to the ground
  • Dust sensor for measuring application-related emissions
  • Portable data acquisition system for data acquisition in the field
  • 3D scanner for reverse engineering on power tools
  • Fiber optic measuring device for detecting strain in power tool housings
  • 3D motion tracking system to track user movement and posture while working with the power tool

 

Further equipment of the institute you findhere

 

Publications within the Research Field


2019
Objective usability evaluation of drywall screwdriver under consideration of the user experience.
Germann, R.; Jahnke, B.; Matthiesen, S.
2019. Applied ergonomics, 75 (75), 170–177. doi:10.1016/j.apergo.2018.10.001
2018
Modelling of Tool Workpiece Interactions—Coefficient of Restitution for Hammer Drilling of Concrete [in press].
Bruchmueller, T.; Huegel, N.; Wacker, S.; Matthiesen, S.
2018. Forschung im Ingenieurwesen, 10
Eine qualitative Untersuchung der Reibungsverhältnisse und des Oberflächenverschleißes in schlagend angezogenen Schraubenverbindungen.
Matthiesen, S.; Wettstein, A.; Sturm, C.
2018. Schraubenverbindungen 2018 - 6. VDI-Tagung, Würzburg, 21. - 22. November 2018, VDI- Verlag
Analysis of dynamic system behaviour using sequence modelling with the C&C-Approach - a case study on a power tool hammer mechanism.
Matthiesen, S.; Wettstein, A.; Grauberger, P.
2018. Proceedings of NordDesign: Design in the Era of Digitalization, NordDesign 2018, The Design Society
Testfallgenerierung – Vorgehen zur Lastkollektivermittlung durch Data Mining am Winkelschleifer.
Matthiesen, S.; Dörr, M.; Zimprich, S.
2018. 29. DfX-Symposium 2018, Tutzing, 25.-26. September. Hrsg.: D. Krause, 12
Adjustable impedance elements for testing and validation of system components.
Heyden, E.; Lindenmann, A.; Oltmann, J.; Bruchmueller, T.; Krause, D.; Matthiesen, S.
2018. Book of Abstracts. Symposium Lightweight Design in Product Development (LWD-PD18), Zurich, CH, June 14-15, 2018, 44–46, CMASLab, Zurich. doi:10.3929/ethz-b-000283432
Anforderungen an ein Messsystem zur Ermittlung der Rotationsimpedanz von Hand-Arm Systemen.
Matthiesen, S.; Lindenmann, A.; Bruchmüller, T.
2018. 7. VDI-Tagung Humanschwingungen 2018, Würzburg, 24.-25. April 2018, 91–106, VDI Verlag GmbH, Düsseldorf
Objective Usability Evaluation of Power Tools under Consideration of the User Experience [in press].
Matthiesen, S.; Germann, R.; Jahnke, B.
2018. Applied ergonomics
From Reality to Simulation – Using the C&C²-Approach to Support the Modelling of a Dynamic System.
Matthiesen, S.; Grauberger, P.; Sturm, C.; Steck, M.
2018. Procedia CIRP, 70, 475–480. doi:10.1016/j.procir.2018.03.039
Modellbildung mit dem C&C²-Ansatz in der Gestaltung - Techniken zur Analyse und Synthese.
Matthiesen, S.; Grauberger, P.; Hölz, K.; Nelius, T.; Bremer, F.; Wettstein, A.; Gessinger, A.; Pflegler, B.; Nowoseltschenko, K.; Voß, K.
2018. KIT, Karlsruhe. doi:10.5445/IR/1000080744
Hand-arm models for supporting the early validation process within the product development of single impulse operating power tools.
Matthiesen, S.; Mangold, S.; Germann, R.; Schäfer, T.; Schmidt, S.
2018. Forschung im Ingenieurwesen, 82, 1–12. doi:10.1007/s10010-018-0265-1
2017
Realitätsnahe Komponententests zur Unterstützung der Produktentwicklung bei der Validierung von Power-Tools.
Matthiesen, S.; Gwosch, T.; Mangold, S.; Dultgen, P.; Pelshenke, C.; Gittel, H.-J.
2017. Konstruktion, 69 (7-8), 76–81
Frontloading in der Produktentwicklung von Power-Tools durch frühe Validierung mit Hilfe von leistungsskalierten Prototypen.
Matthiesen, S.; Gwosch, T.; Mangold, S.; Grauberger, P.; Steck, M.; Cersowsky, S.
2017. Stuttgarter Symposium für Produktentwicklung 2017 (SSP 2017) : Produktentwicklung im disruptiven Umfeld, Stuttgart, Deutschland, 29. Juni 2017
2016
Prozessmodell zur anwendungsorientierten Entwicklung von Power-Tools.
Matthiesen, S.; Germann, R.; Schmidt, S.; Hoelz, K.; Uhl, M.
2016. Technische Unterstützungssysteme, die die Menschen wirklich wollen : Zweite Transdisziplinäre Konferenz - Hamburg, Germany, 12.-13. Dezember 2016. Hrsg.: R. Weidner, 223–232, Helmut-Schmidt-Universität, Hamburg
Ein anpassbares Hand-Arm-Modell mit rotatorischem Freiheitsgrad zur Validierung handgehaltener Geräte.
Matthiesen, S.; Mangold, S.; Zumstein, T.
2016. 6. VDI-Tagung Humanschwingungen 2016 : Würzburg, Germany, 26.-27. April 2016, 95–110, VDI Verlag, Düsseldorf
2014
Der Mensch als zentrales Teilsystem in Wechselwirkung mit handgehaltenen Geräten - Ein problemorientierter Ansatz zur Untersuchung dieser Schnittstelle.
Matthiesen, S.; Mangold, S.; Bruchmüller, T.; Marko, A. M.
2014. Design for X : Beiträge zum 25. DfX-Symposium. 25th Symposium Design for X, DFX 2014, Bamberg, Germany, 1. October - 2. October 2014, 193–204

Overview of all IPEK Publications

An overview of all IPEK publications can be found here.