Tightening Solution Provides Advanced
Providing full wireless programming, diagnostics, and data collection, Bosch Rexroth’s
latest solution enables versatile, highly-efficient results in tightening applications.
by Laura Davis
IIndustry 4.0 is already the hot topic at plants across the globe, and it’s still coming of age and even experts are learning something new about it every day. It’s impossible to know everything about it with so many companies unveiling new smart solutions and trying to fgure out exactly what will be useful is even more diffcult.
First, you have to decide what issue the IIo T needs to solve, and then how it’s going to do that. These vary widely, so from the solution
manufacturer’s perspective, product fexibility is the most important trait. This is the defning feature of the Nexo cordless Wi-Fi nutrunner
from Bosch Rexroth. Using an onboard control unit, the battery-powered fastening tool ensures accurate measurements of torque and
angle of rotation by measuring and recording these values during operation, making it a versatile tool for several applications.
We asked Dan Cejka, Bosch Rexroth’s Product Engineering and Sales Manager for Joining Technologies, why this new smart tool
stands out in the crowded feld.
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NED: WHAT IS THE NEXO AND WHAT INDUSTRY/WORKERS WILL USE IT?
DC: The Bosch Rexroth Nexo wireless nutrunner was developed for industrial applications where ergonomic assembly of safety or func-tion-critical fastening is required. Nexo is state-of-the-art—often referred to as intelligent—fastening technology where electronic sensors
continuously monitor the torque and angle while controlling tool speed and tool reaction. These products are typically used in high-volume
manufacturing such as automotive, aerospace, RV, motorcycle/ATV, and marine.
NED: WHAT ARE THE MAIN FEATURES OF THE NUTRUNNER?
DC: The Nexo provides wireless Li-Ion-powered, intelligent fastening via its fully integrated controller and digital torque/angle transducers. This means it can tighten up to 256 different products and record the results and torque curves automatically to satisfy
quality control requirements. It further features integrated Wi-Fi support providing the ability to fully interact with the factory network
or other i4.0 related software/hardware.
NED: WHAT IS YOUR FAVORITE FEATURE AND WHY?
DC: The fully integrated tightening controller with color HMI display would be my pick. This is a game changer because it allows the
tool to be used in wireless dead spots or completely independent of a factory control system without any loss of functionality or operator
feedback. The full-color display is interactive, allowing the operator to choose programs, review results, receive work instructions, images,
messages, etc. Nexo is really unmatched in its fexibility.
NED: HOW IS THE NEXO DIFFERENT THAN SIMILAR WIRELESS TOOLS?
DC: Other wireless tools require a connection to an external controller. As a result, they do not work well in areas with poor or no wireless
signal. They are also subject to range issues on networks such as Bluetooth or when moving around the production assembly. Nexo avoids these problems via the fully integrated controller and on-board memory. It can work as long as needed without connectivity and transmits results when back in range. By including a full-color HMI directly on the tool, the operator also has a clear advantage
in that all the information needed is directly in their hands, so they can remain focused and effcient.
NED: IN PILOT PROJECTS, WHAT DID YOU FIND WERE THE MOST USEFUL FEATURES OF NEXO?
DC: WWhen developing the wireless Nexo, Rexroth knew it wanted to remove the tool cable to improve fexibility. But, we knew we could do more if we completely integrated the controller into
the nutrunner. This would allow us to remove the cost/space requirements and the installation complexity of an external controller, while drastically improving the startup time from unboxing
to production. With Nexo, users can insert a battery, assign an IP address, and begin fastening within minutes. The onboard controller also allows for extremely fexible deployment, as you can
quickly move tools without the need to rewire and relocate traditional external controllers.
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