Determination of thermal deformation compensation formula for heat distortion, focusing on robustness and cost-efficiency

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K14632
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 18020:Manufacturing and production engineering-related
• Research Institution: Fukui National College of Technology
• Principal Investigator: Ise Taisei 福井工業高等専門学校, 機械工学科, 講師 (20734594)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: all pair法 / 工作機械 / 熱変形補正

Outline of Final Research Achievements

This study proposes a method to compensate for thermal deformation errors by deriving a predictive formula for heat distortion from temperature measurements. Experimental designs based on the all-pairs method are employed. The thermal deformation of each component is analyzed under determined experimental conditions, and the behavior of heat distortion is visualized. The ability to replicate the thermal deformation behavior is demonstrated during actual machine tests. The nonlinearity of thermal deformation is attributed to temperature differences between the main spindle motor and various machine components. This confirms the relationship between the experimental conditions set by the all-pairs method and thermal deformation. Furthermore, an experimental design and analysis methodology are established using the all-pairs method. The accuracy of the predictive formula is evaluated through tests on machine tools, resulting in a reduction in the required number of tests.

Free Research Field

センサ工学

Academic Significance and Societal Importance of the Research Achievements

本研究では、少数の温度測定値から予測式を導き、all pair法に基づく実験計画を活用することで、熱変形誤差を効果的に補正する手法を提案した。all pair法による実験計画と分析手法を確立し、工作機械実機での試験で予測式の精度を評価し、試験回数を削減できることを確認した。
この成果は工作機械全般の品質向上や高精度化のためのコスト削減に貢献し、より信頼性の高い工作機械の開発や産業技術の発展に寄与するものである。