April 09, 2019 Volume 15 Issue 14

Mechanical News & Products

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Top Product: Cross roller ring can swing the loads

Because it has orthogonally arranged cylindrical rollers, the cross roller ring from THK is a roller bearing with high rotation accuracy capable of bearing loads in every direction. Cylindrical rollers are arranged with each roller perpendicular to the adjacent roller, in a 90-deg V groove, separated from each other by a spacer retainer. This design allows just one bearing to receive loads in all directions including radial, axial, and moment loads. This component is optimal for applications such as joints and swiveling units of industrial robots, swiveling tables of machining centers, rotary units of manipulators, precision rotary tables, medical equipment, measuring instruments, and IC manufacturing machines. Available in several rotation configurations including inner/outer ring, inner ring only, and outer ring only. And now a new micro cross roller ring is perfect to handle smaller applications.
Learn more about THK cross roller rings.
Learn about the new Micro Cross Roller Ring RAU.


Solvay develops sustainable Halar ECTFE anti-corrosion coating system

Solvay's new waterborne Halar ECTFE coating system broadens metal corrosion-prevention applications for the chemical processing industry. The coating system is comprised of a high-adhesion primer and topcoat and is easily applied using standard liquid spray equipment. Solvay's Halar ECTFE powder coatings have been used for corrosion prevention for over 40 years for equipment in a range of industries including acids, mining, pulp and paper, pharmaceutical, food and beverage, and semiconductor, among others. The new waterborne Halar ECTFE liquid coating tech expands the range of end-use applications to those that are difficult or impossible to powder coat. This includes complex shapes, uneven surfaces, oversized vessels, pipe interiors, and tanks and containers. Moreover, it provides engineers an alternative protective metal coating option to corrosion-resistant alloys (CRAs).
Learn more.


Powerhouse gripper for collaborative applications

The SCHUNK Co-act EGL-C long-stroke gripper is a milestone on the way to a comprehensive human/robot collaboration (HRC): It is the world's first long-stroke gripper developed for collaborative operation. It achieves high gripping forces up to 450 N (handling weights beyond small parts assembly) and combines them with a long stroke of 42.5 mm per finger. The intelligent 24-V unit is suitable for handling workpiece weights up to 2.25 kg and can be flexibly used in a wide range of applications. The SCHUNK developers are particularly focused on the automotive-related supply industry, carmakers, and machine building, where powerful grippers may be able to achieve rapid success in HRC applications.
Learn more.


Xometry receives ISO 9001:2015 and AS9100D certifications

Xometry, the world's largest digital manufacturing marketplace, recently announced that it has received ISO 9001:2015 and AS9100D certifications. These certifications are among the industry's most rigorous and reflect the company's commitment to quality. ISO 9001 is the world's most widely recognized quality management standard and helps organizations to meet the expectations and needs of their customers. The AS9100 standard goes beyond the requirements of ISO 9001 to meet the rigorous demands of the aerospace and defense industries.
Learn more.


Lightweight, heavy-duty thermoplastic planks introduced

If you're told to walk the plank these days, you may find yourself walking on plastic. SABIC recently introduced its STADECK heavy-duty panels to the Americas. These high-strength but extremely lightweight panels are used for scaffolding and numerous other applications in the building and construction industries. They are made from glass fiber-reinforced thermoplastic resin and are up to 60 percent lighter than wooden planks, saving not only your back but also the gas or diesel it takes to tote heavier support materials around. They also never rot or corrode.
Learn more.


Completely updated new full-line catalog of fasteners

Micro Plastics introduces its new 300-page catalog #41 containing thousands of fastening solutions for engineers and product designers. Find hundreds of new problem-solving products including Spacers, Washers, Clips, Clamps, Ties, Bushings, Screws, Nuts, Rivets, and Plugs. Micro Plastics specializes in Nylon threaded fasteners, but the company also offers extensive product lines for wire management and circuit board hardware. Samples are available upon request.
Check out the new online catalog.


Plastic torque-limiting wing nuts

JW Winco, a leading supplier of standard industrial machine components, has now made available EN 5320 Plastic Torque Limiting Wing Nuts, which are used when manually applied torque is to be limited. Turn clockwise, and the torque of the wing nut triggers an "over-engagement" when the specified torque is reached. When tightening, this will ensure the maximum permissible torque is not exceeded. Turn counter-clockwise, and the torque needed for loosening will always be transmitted properly. The technopolymer plastic is glass fiber reinforced and temperature resistant up to 176 F (80 C). The wing nuts are available in either a black matte or orange matte finish. An aluminum version (GN 3663) is also available.
Learn more.


ICOMold: New CAD model design service partner

ICOMold has partnered with a professional design service with a large group of designers who specialize in designing for injection molding. If you need to get a quote but don't have a 3D CAD model (or need your file modified, repaired, or converted), ICOMold is now offering these services through its design partner ZVerse.
Learn more.


Victrex and Bond pioneer 3D printing for PAEK and PEEK parts

To help customers with an accelerated route to market for 3D-printed PAEK and PEEK parts, UK-based Victrex has secured a multi-million-euro investment in Dutch 3D-printing company Bond High Performance 3D Technology. What's significant is that Bond's technology is capable of printing complex, functional parts made of PAEK/PEEK with excellent mechanical properties, including in the z-direction. This enables the additive manufacturing of high-strength, isotropic parts with properties comparable to conventional molded or machined PEEK parts.
Read the full article.


New counterbalance hinge for heavy panels and lids

Southco has expanded its Positioning Technology portfolio with the addition of a new Counter-balance Hinge that neutralizes the weight of heavy panels and lids, reducing safety and liability concerns while improving end-user ergonomics. The aluminum, black anodized hinge provides precise control when opening and closing heavy panels, enabling the panel to be lifted and lowered effortlessly. Its compact, adjustable design provides for mounting inside enclosures with minimal protrusion, and it can be fine-tuned to precise requirements. Applications include transportation, military, industrial machinery, and medical equipment
Learn more.


Reduce component failure with the HELI-CAL Flexure

Discover how to eliminate vibrating failure, prevent premature component wear, prevent motor seizure, and stop bearing failure by incorporating Helical Products' flexure technology into your machinery components.
Learn more by downloading our white paper.


Top Tech Tip: Mechanical bellows components are an alternative solution

In today's digital world, mechanical components such as metal bellows serve as an extremely reliable mechanism to gather information. The movement of Servometer® electrodeposited metal bellows under hydraulic or pneumatic pressure (internal and external) can create the information needed for a system w/o electricity. Using bellows technology; temperature, gauge, barometric, and differential pressure can be compensated for. With miniature sizes available, Servometer bellows can be added to instrumentation and manifolds of almost any shape or size.
Request a free sample today.


Top Tech Tip: Save space and weight with Smalley Wave Springs

Smalley Wave Springs offer the unique advantage of space savings when used to replace coil springs. By reducing spring operating height, wave springs also produce a decrease in the spring cavity. With a smaller assembly size and less material used in the manufacturing process, a cost savings is realized. Over 4,000 springs available from stock or utilize Smalley's No-Tooling-Costâ„¢ manufacturing process on custom designs, available from .157" to 120". Samples available for testing.
Learn more.


Helpful tips for molding PEEK polymer

Are you a first-time molder of PEEK? Or maybe you've tried molding it and have run into problems? This article from Victrex presents five important considerations in the injection molding process that can help you avoid the need for troubleshooting when molding PEEK polymer. Following this advice can also help you optimize the full potential of this high-performance material.
Read the Victrex tips article.


Cool Tools: New Artec LEO 3D scanner

Exact Metrology is proud to announce the availability of its Artec LEO 3D scanner, the first scanner to offer onboard automatic processing with an integrated touch panel viewer. This frees users from being tied to a computer for data capture. The scanner has a 3D reconstruction rate of 80 frames per second, making it the fastest professional scanner on the market. With its large field of view, Artec LEO can scan and process large objects and scenes quickly and accurately, and it boasts a data acquisition rate of up to 4 million points per sec.
Learn more.


In bid to hush the flush, researchers invent quieter airplane toilet

Airplane toilets are loud. For some, they are downright terrifying. But chin up, frequent flyers, because a group of Brigham Young University (BYU) physicists have figured out how to make them quieter.

After two years of trial and error, three academic publications, and thousands of flushes, the BYU researchers have invented a vacuum-assisted toilet that is about half as loud as the regular airplane commode.

"People have told us they don't want their kids to be scared to use the bathroom on a flight," said lead researcher Kent Gee, BYU professor of physics. "So, we've used good physics to solve the problem."

It's been a really hard problem to solve, given the industry hasn't been able to improve vacuum-assisted toilets over the last 25 years. That's because getting airplane toilets to flush with very little water requires a partial vacuum, which at 38,000 ft, pulls air at nearly half the speed of sound. (According to research done in Gee and Scott Sommerfeldt's lab, an air-water mix in vacuum-assisted toilets travels more than 300 mph.) When things move at that speed, any disturbance at all to the flow -- like the bend of a pipe or a valve -- generates significant noise.

And now that newer airplanes come with much quieter interiors, toilet flushes reverberate much more throughout the cabin. It can make for very patchy sleep on a red-eye flight on a plane like the Airbus A380 that can have as many as 20 toilets.

"Airline companies have always had standards for the toilet noise, but they've never met those and there has never been much pressure to do so," Sommerfeldt said. "Now with the reduced cabin sound levels, the sound of the toilet flushing is more noticeable and customers are pushing back."

To solve the problem, the BYU team focused on three valve conditions during the flush cycle: the initial noise level peak associated with the flush valve opening, an intermediate noise level plateau associated with the valve being fully opened, and the final noise level peak associated with the flush valve closing. The researchers added additional piping to increase the distance between the toilet bowl and the flush valve and made the pipe attachment at the bowl more of a gradual bend as opposed to a sharp 90-degree angle. Tests of the new contraption show aeroacoustically generated noise dropped up to 16 decibels during the flush valve opening and about 5 to 10 decibels when the valve is fully opened.

"It's a great mix between physics and engineering," said grad student Michael Rose, lead author on the team's most recent vacuum-assisted tech publication in Proceedings of Meetings on Acoustics. "The toilet is much quieter, and now kids won't think they're going to get sucked out." Along with Scott Thomson, professor of mechanical engineering, the researchers have already filed three patents on the new toilet and are now working with an industry partner to bring it to market. Part of the lure of the BYU invention is that it works with existing airplane toilets -- only the elbow needs to be removed during a retrofit, while the valve and the bowl stay where they are.

The vacuum-assisted tech could also be used for toilets on cruise ships and trains and even in some new green building projects where housing units are looking at more and more ways to reduce water usage.

"At the end of the day, this is about using science to improve a user experience," Gee said. "It's an important part of making flights more comfortable for customers."

Source: Brigham Young University

Published April 2019

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