High-feed side milling cutters boost ISO S material machining ideal for aerospace industry.
To enhance milling performance on ISO S materials, cutting tool and tooling system specialist Sandvik Coromant is introducing a series of end mills featuring unique geometries and grades. The CoroMill® Plura HFS (High-Feed Side milling) ISO S cutters deliver reliable and productive results on workpieces made from titanium and nickel-based alloys, bringing benefits to both aerospace engine and frame applications.
To help address the predicted growth in aerospace business in the coming years, the CoroMill Plura HFS range comprises two end-mill families optimised for titanium alloys, and one for nickel alloys. As chip evacuation and heat are specific challenges when machining titanium, Sandvik Coromant has developed a solid version for normal chip evacuation conditions, and another featuring internal coolant and a new cooling booster (patent pending) for optimum swarf and temperature control.
The end mills for titanium are available in GC1745 grade, which is based on a tough, fine-grained (sub-micron), cemented-carbide substrate with sharp, controlled edges for very tough milling operations. Furthermore, a new multi-layer coating that contains silicon provides excellent wear resistance and low thermal conductivity. The geometry of the cutters is based on a six-flute concept with no centre cut and uneven tooth pitch. Additionally, the core dimension has been optimised for higher stiffness in titanium alloys, while the corner radius, rake angle and relief are all designed specifically for machining these challenging materials.
For nickel alloys, grade GC1710 is deployed, which also features sharp, controlled cutting edges. A hard, wear-resistant, fine-grained substrate is optimised to resist high working loads when machining hard, highly adhesive, work-hardened materials such as aged Inconel 718. Here, a new coating produced with innovative HIPIMS (high power impulse magnetron sputtering) technology also offers adhesion reducing properties to avoid the formation of BUE (built up edge) and increase tool life.
“The new cutters are designed to offer high-feed side milling with large axial depths of cut (ap) and low radial depths of cut (ae), along with a controlled maximum chip thickness, so that the cutting forces are managed and provide a smooth cutting action” explains Tiziana Pro, Global Product Manager Solid End Mills at Sandvik Coromant. “The result is two-fold: increased productivity provides higher output, while greater tool life and reliability reduces scrap rates in what are typically high-value components. Further customer benefits include reduced tool cost per component and greater safety levels.”
Target aerospace components include titanium wings and pylon parts, as well as engine cases made from Inconel 718. Applications in sectors such as oil and gas, medical and motorsport, where titanium and nickel alloys are becoming increasingly prevalent, will also benefit.
To highlight the potential gains on offer, a customer trial was performed involving an LPT (low-pressure turbine) case made from aged Waspaloy 420 nickel-based alloy. Using a horizontal machining centre, axial depth of cut was increased and radial depth of cut reduced (high radial forces are known to create deflection issues). Comparing a 12mm diameter CoroMill® Plura HFS end mill against a competitor cutter of the same size, metal removal rate increased substantially, leading to an impressive 198% increase in productivity. As a result of this success, the customer has committed to ordering the new cutters from 1 October 2017.
Bonfiglioli develops sustainable digital solutions to continuously optimize the plant life cycle
Benefits of the integration of synchronous reluctance motors and dedicated frequency inverters.
Bonfiglioli is constantly looking for optimizations to offer innovative solutions for industrial motion control to increase the machine performance and its competitiveness, high control performance and high energy efficiency. Nowadays, this last aspect becomes increasingly relevant, both because of environmental considerations and for cost savings related to the plant life cycle.
To address these requirements, Bonfiglioli has developed a Power Drive System in its research centers; this system combines BSR series reluctance synchronous motors with Active Cube frequency inverters with dedicated sensorless vector control. The motor is compatible with the wide range of Bonfiglioli industrial geared units.
This solution is available in two packages, with optimized compactness for small spaces or operation costs reduction respectively, both with excellent efficiency levels (Class IE4 for the motor, and class IES2 for the Power Drive System, according to the actual Ecodesign Standard EN 61800-9-2).
In comparison to conventional motor-frequency inverter solutions, the Bonfiglioli Power Drive System allows minimizing the overall energy consumption in the different operation points. The motor control is realized with a complete mathematical characterization of the motor, which also ensures a simple and reliable system configuration.
The full package integration and the wide range of available software control strategies bring additional performance benefits: accurate sensorless speed control, stable torque control, high torque even at low or zero speed and excellent overloading characteristics.
Overall, this solution is ideal for a wide range of industrial applications; it can be fully integrated in Industry 4.0 plants, thanks to the advanced drive digital connectivity and Bonfiglioli IOT platforms, presented during the 2019 SPS Italia (District 4.0) in combination with this Power Drive System.
What do your motors really do?
In 1969, the first home security system was born, consisting of four peepholes and a camera that could be moved to look through any of them, broadcasting the images to a monitor. Nowadays, we can now stream and view a feed of our home security cameras on our mobiles, giving homeowners greater piece of mind. Here, Markus Brettschneider, of ABB’s food and beverage program, explains how food plant managers can add a similar level of connectivity to retrofit most motors with smart sensors to bring their plants to the digital age.
Industry as a whole is utilizing technologies and solutions enabled through the industrial internet of things (IIoT). Gartner predicts that 25 billion devices will be connected to the internet of things by 2020, with some agencies predicting even double this amount. This presents plant managers with a conundrum. Most food manufacturing and processing plants currently have motors powering essential equipment such as mixers, conveyors and packaging machines. These motors are just motors and do not play in the same league as the other intelligent devices in their factories. With years of service often left in the motors, it’s difficult for plant managers to justify replacing motors that work effectively for the sake of an upgrade with any smart features. However, there are alternatives to a complete overhaul in order to connect motors to the IIoT. Instead of investing in new, more intelligent or smart equipment, plant managers should invest in sensors that provide similar functionality to connected devices. For example, ABB offers smart sensors, which can be fitted to almost any standard low voltage induction motor. The pocket-sized sensor, dubbed ABB Ability Smart Sensor, is directly attached in a couple minutes to the motor’s frame, without wiring. By using sensors that feed performance data to the cloud through a smartphone or gateway solution to a secure server, plant managers can bring their motors up to date with the IIoT. This data gives plant managers a full picture — even on mobile devices — of how their motors are working, without having to carry out dangerous hands-on monitoring. Plant managers can then carry out condition based or predictive maintenance, rather than periodic maintenance. Using the right method to monitor motor condition, enables plant managers to reduce unplanned downtime by up to 70 per cent. This is particularly important in the food and beverage industry, where even a short downtime can be extremely costly. Infrastructure failures in this industry cost up to $75,000 per hour and have a serious impact on seasonally produced items such as sugar. This is a cost that plant managers can avoid by using the right performance insight and awareness. An increased awareness of the condition of any motor also leads to a better awareness of how an entire system is performing. For example, a motor overheating or burning out may indicate a problem elsewhere in the production line, such as a line moving too fast and producing waste. Eliminating this problem could improve energy efficiency by up to ten per cent. Motors, the heart of the food and beverage plant, don’t have to be left behind in the age of the IIoT. Just like a home security camera being connected to your mobile phone, a smart sensor could give a motor a new lease of life, making it perform as an integral part of the data-rich factory and providing all the additional benefits that this creates.
STOBER presents its new product configurator
With the new STOBER Configurator, users have an online tool to intuitively build the right drive solution from STOBER’s extensive product range with just a few clicks. Technical information and drawings are readily available after quickly and easily configuring a product. Users can even request a quote with a simple click. The configurator is one of many projects in STOBER’s commitment to supporting customers with additional digital services.
With the new STOBER Configurator, engineers and designers will save time in product selection and designing. Before the configurator, they searched through catalogs to find the right solution, requested information in multiple places, and used type code values. Now, everything is a simple click away.
Quickly and easily search for gear units, geared motors, motors, and electronics! Intuitive navigation and modern design make using the tool fast and easy. Numerous filters and comparison options are available. Results can be sorted based on price, performance, or size. Users can then configure the product to meet their application requirements. For example, with geared motors, users can pick their shaft and housing style along with mounting position.
Designers can access technical data sheets, dimensional drawings, and 3D models. They can also request a quote. All configurations can easily be shared or saved.
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