Development of an autonomous ultra-precision machine tool having functions of on-machine measurement and tool shaping

2017 Fiscal Year Final Research Report

• Project/Area Number: 15H03900
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Production engineering/Processing studies
• Research Institution: Tokyo University of Agriculture and Technology
• Principal Investigator: NAKAMOTO Keiichi 東京農工大学, 工学(系)研究科(研究院), 准教授 (90379339)
• Co-Investigator(Kenkyū-buntansha): 笹原 弘之 東京農工大学, 工学(系)研究科(研究院), 教授 (00205882)
• Co-Investigator(Renkei-kenkyūsha): TAKEUCHI Yoshimi 中部大学, 工学部, 教授 (50107546)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 超精密切削加工 / 機上計測 / ダイヤモンド工具 / 精密部品加工

Outline of Final Research Achievements

The shapes to be machined shift to more complicated curved surface such as a non-axisymmetric and non-spherical shape. In order to realize on-machine scanning measurement by multi-axis control, the machining error is estimated and the machined shape is compared with the measurement result obtained with a confocal microscope. NC program is also modified to compensate the estimated machining error to improve machining accuracy of micro complicated shapes. Moreover, in order to confirm the possibility of on-machine shaping of diamond cutting tools, sapphire, cemented carbide and quartz crystal are firstly adopted as workpiece material. From the experimental result, stable tool wear is observed along the cutting edge in quartz crystal cutting. Shaping conditions are also investigated to speed up the wear of diamond cutting tool. As a result, it is found that a circular edge is created by the suitable motion of diamond cutting tool based on the proposed on-machine shaping.

Free Research Field

生産工学・加工学