Characterization of Tool Eccentricity of a CNC Milling Machine Using High Speed Imaging

Vidya, SRS and Jonnalagadda, P and Biswas, A (2023) Characterization of Tool Eccentricity of a CNC Milling Machine Using High Speed Imaging. In: 16th International Conference on Sensing Technology, ICST 2023, 17 December 2023 through 20 December 2023, Hyderabad.

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Abstract

Tool eccentricity is a common phenomenon in the milling process and has a significant impact on machining precision and surface quality. This paper presents a cost-effective eccentricity measuring system using high-speed imaging technique for a CNC end mill in its dynamic conditions. Traditional methods such as capacitance and eddy current sensing techniques, require close placement of the sensing probe to tool, whereas high-speed imaging offers a relatively remote, easy to calibrate and affordable solution. Capture of sharp and high-resolution video or image sequence of a high- speed rotating tool enables us to accurately measure its eccentricity. We present a system configured for 37 μm resolution and a test case of eccentricity measurement of 366 μm at the tip and 293 μm at the center of the tool while it is rotating at 6000 rpm. The novelty of this system lies in the utilization of high-speed synchronous strobing of illumination, allowing it to work seamlessly with various commercial compact cameras that do not offer access to their shutter trigger electronically. © 2023 IEEE.

Item Type:	Conference Paper
Publication:	Proceedings of the International Conference on Sensing Technology, ICST
Publisher:	IEEE Computer Society
Additional Information:	The copyright for this article belongs to IEEE Computer Society.
Keywords:	Computer control systems; Eddy currents; High speed cameras; Milling (machining); Milling machines, CNC machine; CNC milling machine; Eccentricity; High speed imaging; Machining precision; Machining surfaces; Milling process; Shutter synchronization; Stroboscopy; Whirling vibrations, Cost effectiveness
Department/Centre:	Division of Mechanical Sciences > Department of Design & Manufacturing (formerly Centre for Product Design & Manufacturing)
Date Deposited:	04 Sep 2024 05:50
Last Modified:	04 Sep 2024 05:50
URI:	http://eprints.iisc.ac.in/id/eprint/84980

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