Application of Piezoelectric Fast Tool Servo for Turning Non-Circular Shapes Made of 6082 Aluminum Alloy

The paper presents the design and testing of a new servo drive for turning non-circular shapes. The presented solution is based on a commercially available piezoelectric drive unit with a stroke equal to 1000 µm and a resonant frequency of 150 Hz. The device was used in a conventional turning lathe...

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Bibliographic Details
Published in:Applied sciences 2021-08, Vol.11 (16), p.7533
Main Authors: Pelic, Marcin, Gapiński, Bartosz, Ptaszyński, Wojciech
Format: Article
Language:English
Subjects:
Accuracy
Aluminum
Contours
Coordinate measuring machines
Design
Fabrication
fast tool servo
Geometric accuracy
Manufacturers
mechatronics
non-circular turning process
piezoelectric actuator
Polynomials
Resonant frequencies
Servoamplifiers
Strain gauges
Turning (machining)
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Summary:The paper presents the design and testing of a new servo drive for turning non-circular shapes. The presented solution is based on a commercially available piezoelectric drive unit with a stroke equal to 1000 µm and a resonant frequency of 150 Hz. The device was used in a conventional turning lathe and installed in a tool turret. The performance of the proposed tool was tested while turning multiple non-circular contours from a cylindrical shaft made of 6082 aluminum alloy. The machining accuracy was tested online using a laser sensor and offline with a coordinate measuring machine. The additional aim of those tests was also to verify if the application of an online transducer can allow a confident preliminary assessment of as-machined geometry. The drive positioning accuracy was compensated using 6th order polynomial what resulted in the fabrication of non-circular contours with an accuracy of no less than 39.8 µm when operating below the limit frequency of the drive (
ISSN:2076-3417
2076-3417
DOI:10.3390/app11167533