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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.

Türkiye endüstrisine, alana özel, spesifik yayınlar üreten MONETA Tanıtım’ın sektörel dergilerinin editörlüğünü yapmaktayım. Yeni nesil, dinamik yayıncılık anlayışıyla, dijital ve basılı mecralarda içerik geliştirmek için çalışmaktayız.

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Motors

Bonfiglioli launches ECGenius, its Continuously Variable Transmission

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High-power, efficient and cost-effective, ECGenius is dedicated to telehandler applications.

ECGenius is a high-power, efficient and cost-effective continuously variable transmission dedicated to telehandler vehicles, and also suitable for other equipment. The Patented Mechanical Variator (Europe, United States and Asia) at the core of this product is the result of over 15 years of development at CVTCORP, Bonfiglioli’s Canadian partner. It enables OEMs to downsize engine while providing unmatched operational ease, and overall vehicle performance improvements in the 20-30% range. Torque and power are transferred seamlessly through 6 actuated rollers, thanks to the electrohydrodynamic lubrication, which prevents metal to metal contact while ensuring the correct torque transfer without slippage.

Thanks to its special technical features, ECGenius is the highest reliable and efficient Continuously Variable Transmission on the market.

The robust design is conceived to handle typical application shock loads, while the precise and stable control system is not at all affected by load variations, all tested by experience with over 500,000 cumulative test hours completed in the lab and by OEMs in real life applications.

The Transmission Control Unit algorithm use, engine and transmission data ensure maximum vehicle efficiency and overall system optimization. The software is easy to integrate and to include special operating modes for specific applications resulting in maximum productivity. The open architecture and customizable software allows maximum flexibility, to adjust to different geographic requirements.

The traction drive mechanical CVT architecture offers smooth, seamless shifting with no steps through an infinite number of effective forward speeds. And the innovative transmission design with advanced control and clutch reduces the number of mechanical components, therefore reducing mechanical and viscous losses. Seamless shifting allows the engine to operate at its optimal operating point translating into fuel efficiency.

ECGenius is the result of an exclusive licensing agreement between Bonfiglioli and CVTCORP, a world leader in the design and development of revolutionary, high-efficiency mechanical Continuously Variable Transmissions (mCVT) for the off-highway market. Included in this licensing agreement are the production transfer of the ECGenius150, along with the CVTCORP current sales pipeline with commercialization volume anticipated at the beginning of 2020.

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Bauer BK Series Geared Motors for Pizza Packaging Line Conveyors

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One of the world’s largest food and beverage companies needed an efficient, reliable drive for a pizza packaging line in one of its plants in Italy. The drives power shrink wrapping machine infeed conveyors. The facility had been using traditional stainless steel motors rated at 70-80 Hz. However, to boost production, the speed was increased to 80-90 Hz which created excessive heat causing the drives to fail.

After a careful analysis of the conveyor application demands, Bauer engineers recommended a BK Series right angle bevel geared motor for improved efficiency compared to worm gear solutions. The Model BK06 supplied features a PMSM (permanent magnet synchronous motor) that reduces heat losses from the rotor by 100% and total losses by approximately 25%, while increasing total efficiency by 10% or more. This improved performance translates into lower total cost of ownership, a reduction in CO2 emissions, and ongoing savings that buffer against future increases in energy costs.

Because PMSM motors provide efficiency at a wide range of speeds, it allowed the conveyor line speed to be adjusted up to 80 RPM when needed to meet production schedule targets.

Compact Bauer BK Series models are completely enclosed and sealed against dust and moisture. A hardened wear sleeve and spray ring ensure leak-free performance.

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Motors

NORD smooth motors ideal for the food and beverage industry

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From its own production, NORD DRIVESYSTEMS offers ventilated and unventilated motors with smooth surfaces for areas with high hygiene standards. Their washdown-optimised cast aluminium housings make them easy to clean.

The smooth surface motors from NORD are available in sizes BG 80, 90 and 100. They are based on the NORD modular construction system and therefore offer maximum flexibility for versatile application areas. The motors are provided with protection class IP66 and they are compatible with every gear unit type. In addition, the use of energy-saving three-phase motors ensures high efficiency with low operating costs.

Optionally, the smooth surface motors are available with the nsd tupH surface treatment, which is a special process making the aluminium surface corrosion-resistant and particularly hard, similar to the qualities of stainless steel. In contrast to protective painting or coating, nothing can detach or flake off.

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