Modern Machine Shop

OCT 2017

Modern Machine Shop is focused on all aspects of metalworking technology - Providing the new product technologies; process solutions; supplier listings; business management; networking; and event information that companies need to be competitive.

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28 MMS October 2017 RAPID TRAVERSE Machining Technology in Brief CNC Technology Advances Factory Digitalization BY M A R K A LB E RT RAF system for production might look different than one for prototyping, and how the process might be better integrated with machining, pos- sibly via a hybrid additive/subtractive machine. Size capabilities will most certainly expand, he says, with the next-generation systems increasing the limit from 70-cm to 3-meter parts. Prodways, call 763-568-7966 or visit All of this work is being conducted in Europe, but Mr. Strebelle says the company could easily supply blanks produced via RAF technology from its North American headquarters in Minneapolis, Minnesota. As the process matures, he says the technology will likely follow the same path as the company's other, mostly plastics-focused additive manufacturing offerings, with Prodways eventu- ally moving to offer the RAF systems themselves in addition to RAF production services. I t is becoming increasingly difficult—and inad- equate—to evaluate developments in CNC technology outside of a larger scenario. This is a scenario in which smart, connected devices and machines share data and interact in order to speed production and improve quality. In this context, the CNC has a key role beyond driving machine tool axes to execute a part program prepared by CAM software. The CNC is a hub around which and from which vital data streams are flowing. For example, recent enhancements to the Siemen's Sinumerik CNC software, as well as the introduction of MindSphere, the company's cloud- based platform for hosting applications, enable manufacturing companies to more fully digitalize their operations. In Siemens' vision of the digital factory, these operations cover the major steps in manufactur- ing: initial product design, production planning, production engineering, production execution, and managing services related to the product's lifecycle under the customer's ownership. All of these steps are included in Siemens' digital enterprise product of ferings. For this reason, Siemens calls this a holistic approach to integrat- ing and digitalizing a company's entire value chain. For machine tool users, advances recently intro- duced in the production-execution step include a new release of Sinumerik CNC software. This release (version 4.8) adds compensation for unwanted axis-nodding movements and pro- tection against machine, tool and workpiece collisions. Nodding compensation is used to adjust for dynamic position deviations in one or more linear axes caused by acceleration processes. Nodding compensation counteracts the dominant In the digital enterprise, the CNC is a data hub that makes it a critical link to the Industrial Internet of Things. Siemens has updated its Sinumerik CNC to fulfill this purpose.

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