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IJAT Vol.18 No.3 pp. 374-381
doi: 10.20965/ijat.2024.p0374
(2024)

Research Paper:

Inner Modulation Controlled Process for Suppression of Chatter Vibration in Double Inserts Turning

Toshifumi Atsuta*,†, Hidenori Yoshimura** ORCID Icon, and Takashi Matsumura*** ORCID Icon

*Kagawa Prefectural Industrial Technology Center
587-1 Goto-cho, Takamatsu 761-8031, Japan

Corresponding author

**Program in Media and Product Design, Faculty of Engineering and Design, Kagawa University
Takamatsu, Japan

***Department of Mechanical Engineering, Faculty of Engineering, Tokyo Denki University
Tokyo, Japan

Received:
October 3, 2023
Accepted:
March 8, 2024
Published:
May 5, 2024
Keywords:
chatter vibration, turning, double inserts cutting, phase difference, low-rigid workpiece
Abstract

A novel cutting manner is presented to control regenerative chatter vibration in double inserts cutting, in which the forward and the backward inserts cut workpiece simultaneously with phase difference in the modulation of finished surface. In double inserts cutting, the forward insert is clamped above the backward insert. Both the inserts are positioned symmetrically with a height offset with respect to the workpiece rotation center. The forward insert mainly removes the material; while the backward insert cuts a part of the inner modulation to lose the regular excitation. The exciting force is also reduced with the cutting thickness of the forward insert after a workpiece revolution. Because the theoretical position offset of the inserts in the feed direction is small, the side cutting edges of inserts are aligned in the same position. The process parameters are determined by estimating the removal volume of the backward insert with the phase shift. The range of the cutting speed and the height offset are given by the frequency of the chatter vibration, which is nearly the same as the natural frequency of the workpiece in single degree of freedom. The proposed cutting manner is validated using comparison between the single insert and double inserts cuttings.

Cite this article as:
T. Atsuta, H. Yoshimura, and T. Matsumura, “Inner Modulation Controlled Process for Suppression of Chatter Vibration in Double Inserts Turning,” Int. J. Automation Technol., Vol.18 No.3, pp. 374-381, 2024.
Data files:
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Last updated on May. 19, 2024