Integrated in-process chatter monitoring and automatic suppression with adaptive pitch control in parallel turning

作     者：Shuntaro Yamato Yuki Yamada Kenichi Nakanishi Norikazu Suzuki Hayato Yoshioka Yasuhiro Kakinuma 

作者机构：Department of System Design Engineering Keio University3-14-1 Hiyoshi Kohoku-ku Yokohama 223-8522 Japan Nakamura-Tome Precision Industry Co. Ltd. 15 NetsunoHakusan Ishikawa 920-2195 Japan Department of Mechanical Science and Engineering Nagoya University Furo-cho Chikusa-ku Nagoya 464-8603 Japan Precision and Intelligent Laboratory Tokyo Institute of Technology 4259-G2-19 Nagatsuta Midori-kuYokohama 226-8503 Japan 

出 版 物：《Advances in Manufacturing》 (先进制造进展（英文版）)

年 卷 期：2018年第6卷第3期

页      面：291-300页

核心收录：

学科分类：08[工学] 

基　　金：supported by the SIP Innovative Design and Production Technology Project commissioned by the New Energy and Industrial Technology Development Organization (NEDO) 

主　　题：Chatter Multitasking machine tool Parall elturning Adaptive control Sensorless Disturbance observer 

摘      要：Simultaneous processes such as parallel turningor milling offer great opportunities for more efficientmanufacturing because of their higher material removalrates. To maximize their advantages, chatter suppressiontechnologies for simultaneous processes must be devel-oped. In this study, we constructed an automatic chattersuppression system with optimal pitch control for shared-surface parallel turning with rigid tools and a flexibleworkpiece, integrating in-process chatter monitoring basedon the cutting force estimation. The pitch angle betweentwo tools is tuned adaptively in a position control system inaccordance with the chatter frequency at a certain spindlespeed, in a similar manner as the design methodology forvariable-pitch cutters. The cutting force is estimatedwithout using an additional external sensor by employing amulti-encoder-based disturbance observer. In addition, thechatter frequency is measured during the process by per-forming a low-computational-load spectrum analysis at acertain frequency range, which makes it possible to cal-culate the power spectrum density in the control system ofthe machine tool. Thus, the constructed system for automatic chatter suppression does not require any addi-tional equipment.