Control of a workpiece holder with piezo-electric-mechanical actuation

• Autorzy: Bakker O. J. , Popov A. , Ratchev S.
• Języki publikacji: EN

Abstrakty

EN

The main focus of research in part-fixture mechanics has been in the static deformation and part constraints. Little attention has been paid to the dynamic behaviour of these systems. However, the dynamics of the system largely determines the obtained precision during the machining process. The part is modelled as a lumped mass-spring model and the clampers and locators of the fixture are modelled as spring-dampers. The fixture frame is considered to be much stiffer than the locators, such that it provides zero displacement boundary conditions to the locators. In this study a piezoelectric actuator is utilized to provide adaptive clamping forces. The analysis has shown that position feedback can be used to minimize unnecessary displacement of the workpiece. Additionally, a lag filter can improve the steady state response.

Słowa kluczowe

EN

fixturing technology; active fixture; fixture control; dynamics modelling; piezoelectric actuation

• Wydawca: Wydawnictwo Wrocławskiej Rady FSNT NOT
• Czasopismo: Journal of Machine Engineering
• Rocznik: 2008
• Tom: Vol. 8, No. 3
• Strony: 17--28
• Opis fizyczny: Bibliogr. 17 poz., tab., rys.

Twórcy

autor

Bakker O. J.

• Mechanics, Materials & Structures Division and Manufacturing Division, Faculty of Engineering, University of Nottingham, University Park, Nottingham, NG7 2RD, UK

autor

Popov A.

• Mechanics, Materials & Structures Division and Manufacturing Division, Faculty of Engineering, University of Nottingham, University Park, Nottingham, NG7 2RD, UK

autor

Ratchev S.

• Mechanics, Materials & Structures Division and Manufacturing Division, Faculty of Engineering, University of Nottingham, University Park, Nottingham, NG7 2RD, UK

Bibliografia

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