Compliant joints for the improvement of the dynamic behaviour of a gantry stage with direct drives

• Autorzy: Pöhlmann Patrick , Peukert Christoph , Merx Marcel , Müller Jens , Ihlenfeldt Steffen

Identyfikatory

DOI

10.36897/jme/127103

• Języki publikacji: EN

Abstrakty

EN

Gantry stages, which consist of two parallel acting servo drives, are commonly used in machine tools. One drawback of this concept is the crosstalk between both drives due to the structural coupling that can cause stability issues and therefore limits the bandwidth of the position control. This paper deals with the development of compliant joints to solve the coupling between the drives. When compared to solutions containing bearings, the advantages of such flexible elements are low friction and the absence of backlash. To adjust the properties of the joints, packages of spring-steel-sheets are used as compliant links. One design aspect of the flexible joints is a low stiffness relating to the rotation around one specific axis, but a high stiffness relating to the other degrees of freedom. With this method, the dynamic behaviour of the gantry stage is modified and the bandwidth of the controllers can be increased. Additionally, by releasing the mechanical coupling of the drives, the reaction forces the actuators have to provide can be reduced. Both systems with flexible and with rigid connecting elements, are analysed by measured frequency response functions.

Słowa kluczowe

EN

compliant joint; direct feed drive; gantry stage; cascade control

• Wydawca: Wydawnictwo Wrocławskiej Rady FSNT NOT
• Czasopismo: Journal of Machine Engineering
• Rocznik: 2020
• Tom: Vol. 20, No. 3
• Strony: 17--29
• Opis fizyczny: Bibliogr. 21 poz., rys., tab.

Twórcy

autor

Pöhlmann Patrick

• Technische Universität Dresden, Faculty of Mechanical Science and Engineering, Institute of Mechatronic Engineering, Chair of Machine Tools Development and Adaptive Controls, Dresden, Germany

autor

Peukert Christoph

• Technische Universität Dresden, Faculty of Mechanical Science and Engineering, Institute of Mechatronic Engineering, Chair of Machine Tools Development and Adaptive Controls, Dresden, Germany

autor

Merx Marcel

• Technische Universität Dresden, Faculty of Mechanical Science and Engineering, Institute of Mechatronic Engineering, Chair of Machine Tools Development and Adaptive Controls, Dresden, Germany

autor

Müller Jens

• Technische Universität Dresden, Faculty of Mechanical Science and Engineering, Institute of Mechatronic Engineering, Chair of Machine Tools Development and Adaptive Controls, Dresden, Germany

autor

Ihlenfeldt Steffen

• Technische Universität Dresden, Faculty of Mechanical Science and Engineering, Institute of Mechatronic Engineering, Chair of Machine Tools Development and Adaptive Controls, Dresden, Germany
• Fraunhofer Institute for Machine Tools and Forming Technology IWU, Dresden, Germany

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