5G technology on the shop floor

When high-speed machining, excessive vibrations can cause unacceptable surface defects. Can 5G, the latest generation of cellular mobile communications, transmit critical machining data fast enough to slash the number of such part defects in industrial settings?

One partnership aims to find out. Fraunhofer Institute for Production Technology, Aachen, Germany, has joined forces with telecommunications firm Ericsson, Stockholm, and machine tool builder GF Machining Solutions Management SA, Geneva, to create an extremely fast-acting process monitoring system based on 5G technology.

Fraunhofer IPT, which researches production technology, developed the system’s wireless sensor. It is basically an accelerometer attached to a workpiece during milling, explained Niels König, the institute’s head of production measurement. Ericsson supplies the 5G communication technology that transmits sensor data, and GF is responsible for making the wireless sensor technology work in machine tools.

Fraunhofer IPT has a test bed for developing 5G machining technology. Image courtesy of Fraunhofer Institute for Production Technology

GF machines can house more than 200 sensors, but none are placed on the part being machined, noted Roberto Perez, the company’s head of innovation for digital transformation. “Sensors with wireless 5G connectivity are a new means of providing information about (part) vibration and potential defects,” he said.

According to the partners, wired sensing systems and even wireless LAN cannot meet the speed demands of this application. 5G, they say, is the only option for transmitting production data in under one millisecond, thereby minimizing troublesome latency. The goal is to allow real-time monitoring of sensor vibration data and dramatically shorten reaction times when cutting parameters need to be adjusted to prevent defects.

With its high-value components and stringent quality standards, the partners believe that the aeronautics industry may be an early adopter of 5G production technology. In this industry, any small defect is a risk, Perez said. In their battle against part defects, he said, aircraft companies spend a good deal of time and money reworking parts and incur the cost of high scrap rates.