Analysis of Coupled Dynamic Behavior between Machine Tool Dynamics and Cutting Force

2020 Fiscal Year Final Research Report

• Project/Area Number: 18H01350
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 18020:Manufacturing and production engineering-related
• Research Institution: Kobe University
• Principal Investigator: SATO Ryuta 神戸大学, 工学研究科, 准教授 (60376861)
• Co-Investigator(Kenkyū-buntansha): 西田 勇 神戸大学, 工学研究科, 助教 (40776556) ; 白瀬 敬一 神戸大学, 工学研究科, 教授 (80171049)
• Project Period (FY): 2018-04-01 – 2021-03-31
• Keywords: NC工作機械 / 切削加工 / 振動特性 / シミュレーション

Outline of Final Research Achievements

NC machine tools are widely used for to generate desired shapes from materials. It is a key facility in the industrial fields. Although vibration characteristics of the machine tools influences the machining ability and quality, the vibration characteristics during the cutting operations have not been clarified up to now. This study newly proposes an evaluation method for the frequency characteristics during the cutting operation which influenced by the contact between tool and workpiece. A mathematical model which considers the influence of the contact is developed in this study. It is confirmed that the proposed model can simulate the actual vibration characteristics during the cutting operations.

Free Research Field

生産工学・加工学

Academic Significance and Societal Importance of the Research Achievements

本研究によって，切削加工中の工作機械の周波数特性を直接測定する方法が確立された．これは，より優れた加工条件の探索や工作機械の開発につながるものであり，加工能率や品質の向上による生産工程におけるCO2排出量の削減につながるなど，大きな社会的意義がある．また，工具と工作物間の接触による影響を考慮した切削加工中の工作機械の振動特性のシミュレーションが可能となったことで，これまで明らかにすることができなかった，工具と工作物との間における加工中の接触剛性や振動減衰性の解明が可能になると考えられ，学術的に大きな意義がある．