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Sensors 2016, 16(3), 405; doi:10.3390/s16030405

Development of a Tri-Axial Cutting Force Sensor for the Milling Process

1
The State Key Laboratory for Manufacturing Systems Engineering, Xi’an Jiaotong University, Xi’an 710049, China
2
School of EMU Application and Maintenance Engineering, Dalian Jiaotong University, Dalian 116028, China
*
Author to whom correspondence should be addressed.
Academic Editor: Gary R. Pickrell
Received: 5 January 2016 / Revised: 10 March 2016 / Accepted: 14 March 2016 / Published: 19 March 2016
(This article belongs to the Section Physical Sensors)

Abstract

This paper presents a three-component fixed dynamometer based on a strain gauge, which reduces output errors produced by the cutting force imposed on different milling positions of the workpiece. A reformative structure of tri-layer cross beams is proposed, sensitive areas were selected, and corresponding measuring circuits were arranged to decrease the inaccuracy brought about by positional variation. To simulate the situation with a milling cutter moving on the workpiece and validate the function of reducing the output errors when the milling position changes, both static calibration and dynamic milling tests were implemented on different parts of the workpiece. Static experiment results indicate that with standard loads imposed, the maximal deviation between the measured forces and the standard inputs is 4.87%. The results of the dynamic milling test illustrate that with identical machining parameters, the differences in output variation between the developed sensor and standard dynamometer are no larger than 6.61%. Both static and dynamic experimental results demonstrate that the developed dynamometer is suitable for measuring milling force imposed on different positions of the workpiece, which shows potential applicability in machining a monitoring system. View Full-Text
Keywords: three-component; fixed dynamometer; strain gauge; positional variation; milling force three-component; fixed dynamometer; strain gauge; positional variation; milling force
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Li, Y.; Zhao, Y.; Fei, J.; Zhao, Y.; Li, X.; Gao, Y. Development of a Tri-Axial Cutting Force Sensor for the Milling Process. Sensors 2016, 16, 405.

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