November 17, 2020 Volume 16 Issue 44

Mechanical News & Products

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Monitor mounts and locking slide connectors

JW Winco's new monitor mounts GN 197, including VESA adapter plates and locking slide units GN 134.7 and GN 147.7, open up new possibilities for diverse customer needs. The monitor mount includes a connection stud that makes it extremely simple to fasten the mount to all tube clamp connectors. In combination with rotary or flanged joints, users can realize any number of degrees of freedom and adjustment options for touch screens, panels, displays, and monitors on production machines. Locking slide units based on universal or flanged tube clamp connectors allow for quick and easy movement to recurring positions on a square construction tube via a moving slide.
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New sealing solution for small appliances, power tools, and even drones

Freudenberg Sealing Technologies has launched series production of a modular sealing unit that combines a classic radial shaft seal with a plastic outer case. The design promotes better long-term seal performance and longevity, is easier to assemble, and significantly lowers manufacturing costs in comparison with traditional metal-encased radial shaft seal units. The innovative sealing concept has been developed for use in general industry applications that are especially focused on small, electric household appliances, but power tools and drones may benefit too.
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Low-viscosity epoxy coating features acid resistance

Master Bond EP21ARLV is a two-part epoxy that may be used as an adhesive, sealant, coating, or encapsulant. It bonds well to a variety of substrates including metals, ceramics, composites, and many plastics and rubbers. The product is capable of withstanding prolonged exposure to a wide range of chemicals, such as 70% sulfuric acid, 10% hydrochloric acid, 10% nitric acid, and butyl acetate. "With its low-viscosity and acid resistance, EP21ARLV is a go-to material for potting and encapsulations in battery applications," says Rohit Ramnath, Senior Product Engineer. "This combination is especially useful in applications where protection from acids is crucial."
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No. 1 reason for retaining ring failure -- and how to overcome it

Drills, saws, sanders, and grinders -- what do all of these power tools have in common? Retaining rings keep them from falling apart. A retaining ring's function is to hold components or assemblies in place. For a retaining ring in a power tool, this is no easy feat because it is regularly exposed to high axial and vibrational force. Understanding why failure happens and how to prevent it is imperative. The most common point of failure may surprise you.
Read this informative Smalley blog.

Automated deburring tool from SCHUNK uses proven blade tech

The CDB robot deburring tool from SCHUNK is suitable for robot-assisted deburring of workpieces made of plastic, aluminum, steel, brass, and other materials in a wide variety of geometries. It can be used for deburring stamped parts, for household and industrial fittings, as well as for plastic or metal components in the automotive or aviation industry. Being able to insert conventional deburring blades that were previously used manually 1:1 into the robot tool makes quick and uncomplicated changeovers from manual to automated operation possible. Compared to manual deburring, robot-assisted deburring offers a vast range of advantages, including that employees no longer need to endure difficult, dangerous, and lengthy deburring tasks.
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Reverse engineering with Geomagic

See how 3D Systems' Geomagic Design X software can break down a typical reverse engineering job. Geomagic Design X makes it easy to create CAD models from 3D scans faster, more accurately, and more reliably. It handles large scan data sets and makes complex 3D models with hybrid modeling for solid, surface, and mesh. Users can convert physical parts into CAD for new product designs or make existing parts fit with new parts. This short presentation is a helpful way to view the tool capabilities and functionality using real-world examples.
View the video.

Expanded range of bellows couplings

Ruland Manufacturing has expanded its line of bellows couplings to include an outer diameter of 2 1/4 in. (57 mm), allowing for larger bore sizes and increased torque and torsional stiffness capabilities. Designers prefer to specify bellows couplings in servo-driven systems due to their high accuracy and repeatability. This size expansion allows for bore sizes up to 1 1/4 in. (32 mm) in a clamp-style design with or without keyways. Ruland bellows couplings are an assembly of two hubs and a thin-walled metallic bellows. Hubs are manufactured from aluminum for light weight and low inertia. They are joined by a thin-walled stainless steel bellows, allowing the coupling to remain flexible under high torsional loads.
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New performance gasketing for the automotive industry

Loctite AA 5884 from Henkel is a new polyacrylate (liquid) gasketing technology that replaces the press-in-place (PIP) process using solid rubber gaskets or o-rings to accomplish plastic-to-metal sealing. The liquid gasket is cured by ultra-violet light within seconds and becomes a solid compression gasket with no knit line. Loctite AA 5884 also boasts higher oil resistance and proven lower gas permeability.
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Mini Drill press with precision program control

The Mini Drill press with 708-CNC control option is a new unit from SERVO Products Co. Unique to the market and made in the USA, this system is essentially a complete mini drill press with a motor programmed via CNC panel. Its higher-RPM brushless DC motor (no carbon dust) is ideal for continuous use. With the 708-CNC option, users get precision program control for drilling and reaming. Users also get the ability to download, upload, and store hundreds of integrated speed and motion direction programs on one controller.
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New catalog from High Pressure Equipment

High Pressure Equipment Company (HiP), a subsidiary of Graco Inc., has released a new 148-page full line catalog detailing their high-pressure valves, fittings, and tubing, as well as their complete family of reactors and pressure vessels. HiP products are used in a wide variety of industries, including waterjet cutting and blasting, oil and gas, chemical and petrochemical, research and development, universities and government, and general industry.
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Large-format 3D metal printer: Increases throughput 5x

VELO3D, an innovator in digital manufacturing, recently announced the expansion of its systems portfolio to include Sapphire XC, an "Extra Capacity" large-format printer that will increase production throughput by 5X and reduce cost-per-part by up to 75% when compared to the existing Sapphire system. The printer has a build volume of 600 mm x 550 mm and uses the laser powder-bed fusion (LPBF) process with patented capabilities to print without consideration of support structures. Compatible alloys include Aluminum F357, Titanium 6AI-4V, INCONEL 718, and HASTELLOY X.
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Tech Tip: Wave spring vs. coil spring -- what's the difference?

The key advantage of using a wave spring is in the axial space savings. Whether it is a static or dynamic application, a wave spring can provide the same force and deflection as a coil spring -- but in considerably less space. There are many other advantages of using wave springs, including cost savings when considering the whole assembly.
Learn more in this informative Smalley blog.

IKO expands line of CFKR cam followers

IKO International has expanded its line of CFKR series of Double Hex Hole Cam Followers. The outside diameter of the outer ring is now available in 22 and 26 mm, with current models as high as 90 mm. These bearings are designed for outer-ring rotation and have superior rotational performance with a small coefficient of friction and high load capacity. Consider the CFKR 90 model, which features a dynamic load rating in excess of 45,000 N, compared to 40,500 N for similar cam followers on the market. Because the structure of the CFKR series features hexagon holes on both stud ends, it can be tightened from the roller or stud end. Other variations available.
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Powder and e-coat-compatible seam sealant provides toughness and flexibility

Designed to prohibit liquids, solids, and gases from entering through gaps and voids in metal seams, Henkel's new Loctite EA 3501 HT is a one-part, heat-cure epoxy seam sealant that offers excellent adhesion to primed or bare oily metals. This grey sealant maintains its flexibility, adhesion, and color after exposure to paint bake processes up to 225 C, and is ideal for use on a range of outdoor power and heavy-equipment vehicles including agricultural, construction, utility, marine, and sports/leisure, as well as work trucks and trailers. This epoxy provides a tough, flexible bond on metal seams between welded or bonded joints, butt joints, and other visible seams to prevent rust and corrosion.
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Convert any standard pipe into a powerful, high-volume conveyor

EXAIR's new 2-1/2 NPT Heavy Duty Threaded Line Vac is a powerful in-line conveyor that transports high volumes of material through ordinary pipe. Designed for rugged, industrial applications, it has a hardened alloy construction that helps prevent premature wear when transporting abrasive or heavy materials like shot blast, tumbling media, or metal fittings. These units feature large throat diameters that make it possible to convey more material over longer vertical and horizontal lengths. The conveying rate is typically twice that of ordinary air-powered conveyors.
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Physicists circumvent centuries-old theory to cancel magnetic fields

The ability to cancel magnetic fields has benefits in quantum technology, biomedicine, and neurology.

A team of scientists, including two physicists at the University of Sussex in England, has found a way to circumvent a 178-year old theory, which means they can effectively cancel magnetic fields at a distance. They are the first to be able to do so in a way that has practical benefits.

The work is hoped to have a wide variety of applications. For example, patients with neurological disorders such as Alzheimer's or Parkinson's might, in the future, receive a more accurate diagnosis. With the ability to cancel out "noisy" external magnetic fields, doctors using magnetic field scanners will be able to see more accurately what is happening in the brain.

The study, "Tailoring magnetic fields in inaccessible regions," is published in Physical Review Letters. It is an international collaboration between Dr. Mark Bason and Jordi Prat-Camps at the University of Sussex, and Rosa Mach-Batlle and Nuria Del-Valle from the Universitat Autonoma de Barcelona in Spain.

Earnshaw's Theorem from 1842 limits the ability to shape magnetic fields. The team was able to calculate an innovative way to circumvent this theory in order to effectively cancel other magnetic fields that can confuse readings in experiments.

In practical terms, they achieved this through creating a device comprised of a careful arrangement of electrical wires. This creates additional fields and so counteracts the effects of the unwanted magnetic field. Scientists have been struggling with this challenge for years, but now the team has found a new strategy to deal with these problematic fields. While a similar effect has been achieved at much higher frequencies, this is the first time it has been achieved at low frequencies and static fields -- such as biological frequencies -- which could unlock a host of useful applications.

Other possible future applications for this work include:

  • Quantum technology and quantum computing, in which "noise" from exterior magnetic fields can affect experimental readings.
  • Neuroimaging, in which a technique called "transcranial magnetic stimulation" activates different areas of the brain through magnetic fields. Using the techniques in this paper, doctors might be able to address areas of the brain needing stimulation more carefully.
  • Biomedicine, to better control and manipulate nanorobots and magnetic nanoparticles that are moved inside a body by means of external magnetic fields. Potential applications for this development include improved drug delivery and magnetic hyperthermia therapies.

"We've discovered a way to circumvent Earnshaw's theorem, which many people didn't imagine was possible. As a physicist, that's pretty exciting," said Dr. Bason from the School of Mathematical and Physical Sciences at the University of Sussex. "But it's not just a theoretical exercise, as our research might lead to some really important applications: more accurate diagnosis for Motor Neurone Disease patients in the future, for example, better understanding of dementia in the brain, or speeding the development of quantum technology."

Source: University of Sussex

Published November 2020

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