The results of research using the semiconductor strain sensor STREAL were presented at the 2022 Annual Conference of the Japan Society of Mechanical Engineers. This research is the result of an industry-academia collaboration between Shizuoka University, NT Tool Corporation, and Macnica, and the presentation at Shizuoka University on September 12th marked the sixth time the results have been presented. The research, titled "Development of a Wireless Torque and Thrust Measurement System Mounted on a Cutting Tool Holder," presented the results of successful wirelessization of a system to prevent machining defects in precision machine tools.

In the cutting of high-quality metal products, machining defects and reduced productivity due to tool wear, cutting edge fractures, and chip jamming are major issues. Research and development has been carried out to develop technology to detect these abnormalities using STREAL, which has high sensitivity with a minimum sensitivity of 1με, as well as compactness, energy saving, and low cost, along with tool holders manufactured by NT Tools, and knowledge from Shizuoka University.

Below are the photos and data from the experiment.
Data was obtained showing that STREAL can detect abnormalities during drilling.

The announcement of the development of a system that can realize long-term monitoring of machining status and abnormality detection by wirelessly transferring data communication and power supply to sensors (wireless power supply board, Macnica application development product), which had previously been done via wires, received a great response. Please continue to pay attention to the efforts of these three companies, who aim to develop systems that support manufacturing sites.

[Professor Sakai of Shizuoka University after his lecture and the Toyama University building where the lecture was held]