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SUPPLEMENT FEATURE MANUFACTURING TECHNOLOGY


Integrating additive manufacturing with standard CNC machining


Hybrid Manufacturing Technologies has developed a CNC-based hybrid tool control solution with the help of Beckhoff Automation that enables virtually any CNC machine or robotic platform to deploy both metal-cutting and metal-adding heads in the spindle and conveniently change between them


F


ounded as a commercial entity in 2012 by Dr Jason Jones and Peter Coates,


Hybrid Manufacturing Technologies actually began life in 2007 when the active use of a high-speed milling machine was initiated at De Montfort University’s Additive Manufacturing (AM) and 3D printing research laboratory. The cross-pollination of additive and subtractive technologies led to a four year, UK-based research project named RECLAIM (REmanufacture of high-value products using a Combined LAser cladding, Inspection and Machining system) with support from the Technology Strategy Board and a number of industrial collaborators.


ADDITIVE MANUFACTURING Key to the technology is its ability to provide both metal adding and metal removal tools on the same spindle; operations undertaken by discrete machines and requiring lengthy additional changeovers and programming steps. This also means that the majority of metal parts made by additive manufacturing can have post-processing operations, such as polishing, milling and surface blasting, without having to locate to another manufacturing cell, resulting in fabrication and surface finishing being achieved in a single setup. The hybrid approach also allows different compositions of materials to be used in the same component, while in-process inspection can assure quality levels otherwise impossible to evaluate. The company initially had issues – relating to both the Ethernet communications and the HMI – with its original control solution, which lead to the first contact with Beckhoff Automation in 2014. The result of this


S8 APRIL 2016 | 20TH ANNIVERSARY SUPPLEMENT


Hybrid Manufacturing Technologies, named as the inaugural winner of the International Additive Manufacturing Award, the largest 3D printing award in history, is already looking to the future and is considering the next steps in the development process


collaboration was a control solution that not only addressed the communication and HMI issues, but also facilitated easier connection at customer sites and offered greater capability to expand the solution as the technology and the customers’ needs evolve. The technology is compatible with most CNC machine configurations and robotic platforms and can be supplied in collaboration with an OEM as an option on a new machine or added as a retrofit to new or used machines already in the field. A machine tool builder adopting Hybrid’s system can use it to add additive manufacturing to the capabilities of a standard machine. Hamuel, for example, first introduced an additive-capable model to a line of their machine tools in 2013 and several other machine tool builders have followed suit. The current Hybrid system supports a


Beckhoff worked really well with Hybrid, forming a strong relationship. The project itself was very smooth, with very few issues encountered during the development phases


range of AMBIT processing heads with different geometries, laser profiles, powder delivery configurations and de- focused energy beams to support tasks including 3D deposition, cladding, marking, cutting, drilling, pre-heating, annealing/stress relieving, surface re- melting and cleaning among others. The default setup accommodates up to 15 processing heads, but it can be expanded indefinitely, subject to space in the tool changer and controller capacity. Beckhoff’s motion control solution


comprised a number of elements. These included the EK1100 EtherCAT Coupler and other EtherCAT terminals and a Beckhoff CP2218 panel PC running Microsoft Windows 7 and TwinCAT 3 software for programming and control. Hybrid Manufacturing Technologies was particularly impressed by the Beckhoff HMI solution and the ability to deploy EtherCAT in the machine head. Peter Coates, co-founder of Hybrid


Manufacturing Technologies, elaborates on the technology and its capabilities: “We can make bespoke heads for customers, depending on their precise


application needs, and these heads can be attached to virtually any machine tool. Looking beyond the machine, Beckhoff’s use of EtherCAT means that connection to other cells is straightforward, and being based on a Window platform makes interfacing with Enterprise Systems far simpler from a protocol perspective and can leverage existing communication backbones. We will be looking to deploy Beckhoff systems in our standard product offerings as we expand worldwide, in step with the granting of foundational patents and intellectual property rights around the globe.”


EASY TO USE Commenting on the move to a new control solution, Coates adds: “It was a bit of a culture shock, as we were used to working with software and hardware from another supplier, but we were able to do all the programming using the TwinCAT 3 software with minimal training. We found it incredibly easy to use and will exploit further training opportunities to improve our knowledge of the system’s capabilities. The beauty of the structured text programming is that we don’t have to change the platform, this also allows us to expand it seamlessly by simply adding new PLC code and all of the controls run the same code, which is unbelievably useful. The connectivity will also allow us to license the software in a way that allows users to deploy it on a pay-per-use basis.” By offering an open architecture running


on off-the-shelf software solutions, Beckhoff products can be used as separate components or integrated into a complete and seamless control system. This open approach also facilitates integration into customer sites, especially in relation to the deployment of Ethernet-based control and ERP solutions.


Beckhoff Automation T: 01491 410539 www.beckhoff.co.uk


/AUTOMATION


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