Simultaneous Wireless Power and Data Transmission Over One Pair of Coils for Sensor-Integrated Rotating Cutter

Jixuan Zhu,Bo Tao

doi:10.1109/access.2020.3019695

Abstract

Tool condition monitoring is becoming particularly important in the cutting process. More and more researchers start to integrate the sensors into the tool holder due to its convenient use and wide applicability. However, it is difficult to transmit out the condition data and supply stable power to the sensor-integrated systems through the traditional wired way as the tool holder is under high-speed rotation in milling or drilling process. In this paper, a novel simultaneous wireless power and data transfer system over one pair of coils for sensor-integrated rotating cutter is presented, and the eddy effect caused by the metal handle that impacts the system performance is solved with ferrite shielding. To transmit out the cutting condition data wirelessly, the synchronous detection and envelope detection technology are employed. Meanwhile, the synchronous rectification technology is adopted to improve the performance of the wireless power transfer. Eventually, the experimental platform has been set up and the cutting tests have also been carried out. The results show that the designed new wireless power and data transfer system over one pair of coils is stable and practical to track and transmit out the condition data of the rotating cutter.

Highlights

Cutting tool plays a vital role in the cutting process, whose abnormal changes directly affect the machining accuracy and workpiece surface quality [1]–[3]
EXPERIMENTAL PLATFORM 1) TEMPERATURE MEASUREMENT WITH INTEGRATED THERMOCOUPLE As an illustrative example of the sensor data source, the cutting condition of temperature is employed to verify the performance of designed power and data transfer system
The most used K-type thermocouple is selected to measure the cutting temperatures of rotating cutter, which needs to be integrated into the cutting tool

Summary

Introduction

Cutting tool plays a vital role in the cutting process, whose abnormal changes directly affect the machining accuracy and workpiece surface quality [1]–[3]. INDEX TERMS Tool condition monitoring, rotating cutter, simultaneous wireless power and data transfer, one pair of coils, ferrite shielding.

Results

Conclusion