April 10, 2018 Volume 14 Issue 14

Mechanical News & Products

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New slim and ergonomic compression latch

Southco has launched the E3 Compact MIM compression latch, bringing new ergonomic and safety features to its durable family of latches in a low-profile package. The E3 Compact MIM compression latch is metal injection molded and has a shorter head (4 mm vs. the normal 6.4 mm), 180-degree ergonomic actuation, and visual indicators machined into the latch and color coded to easily show when it is open or closed. Features a sleek, low-profile, polished look.
Learn more.


Optimizing seal selection: From O-rings to press-in-place

What is the right seal for my application? The Sealing & Shielding Team at Parker Hannifin is looking to help you out in this blog. Learn some basics and possible modifications, including application and manufacturing considerations, gland options, mating hardware, and more. They are always very helpful over there at Parker.
Read the Parker blog.


Adjustable Spot Cooler provides precise industrial cooling

EXAIR's Adjustable Spot Cooler System offers a low-cost, reliable, and maintenance-free solution for industrial spot cooling needs. This tool offers precision control, versatility, and ease of use for a variety of applications including milling, machining, soldering, gas sampling, welding, and more. Utilizing cool and clean compressed air, the Spot Cooler allows users to precisely adjust temperatures from as low as -30°F (-34°C) to room temperature with the simple turn of a knob.
Learn more.


What can you secure with a retaining ring? 20 examples

From the watch dial on your wrist to a wind turbine, no application is too small or too big for a Smalley retaining ring to secure. Light to heavy-duty loads? Carbon steel to exotic materials? No problem. See how retaining rings are used in slip clutches, bike locks, hip replacements, and even the Louvre Pyramid.
See the Smalley design applications.


Fastest large-format SLA 3D printer in the world

Built on Formlabs' next-generation Low Force Display print engine, the new Form 4L SLA 3D printer delivers unmatched reliability with a 99% print success rate compared to other SLA 3D printers. These benefits, combined with a build volume nearly 5x the size of Form 4, allow Form 4L users to solve big problems and print smaller parts at high volume. Large-scale prints finished in under six hours.
Learn more.


SOLIDWORKS catch up: What's new in Assemblies?

The last couple of major releases of SOLIDWORKS each introduced significant new Assembly modeling features and workflows. Want to know what's new? Catch up on what you might have missed out on since your last upgrade -- and get a first look at highlights from the upcoming SOLIDWORKS 2025. Some very useful changes!
View the video.


Did you know you can 3D print rubber?

3D-printing materials just keep getting better -- and now there are more choices than ever. Watch as Walter Voit, SVP Polymer Materials, Desktop Metal, describes the 3D printing of DuraChain Elastic ToughRubber photopolymers, which produce tough and resilient end-use parts while eliminating the need for a two-part resin. DuraChain photopolymers also demonstrate a long pot life of roughly one year, depending on environmental conditions, making them more suitable for volume production and reducing waste from spoiled, unused material. These materials are offered exclusively on the ETEC Xtreme 8K top-down DLP systems. ETEC is a wholly-owned subsidiary of Desktop Metal.
Learn about this exciting material.
Learn about the ETEC Xtreme 8K DLP systems -- and what makes them so much better.


Best high-speed rotary bearing in THK history

THK has developed its best-performing, high-speed rotary bearing ever: the High-Speed, Double-Row Angular Contact Ring BWH. This rotary bearing has balls aligned inside a cage between the inner and outer rings and is part of the THK Rotary Series, along with the cross-roller ring. The main features of this product are its ability to receive loads in all directions as well as its high rigidity and rotational accuracy, which are equal to that of cross-roller rings. By adopting a new structure to change the rolling elements from rollers to balls, this product achieves the greatest high-speed performance ever offered by THK.
Learn more.


Large bore zero-backlash jaw couplings from Ruland

Ruland Manufacturing has expanded its jaw coupling line to meet the demands of high-torque applications, now offering bore sizes up to 1-3/4 in. or 45 mm and torque capacities of 2,655 in.-lb (300 Nm). Target uses are in precision systems with high deceleration and acceleration curves, such as semiconductor, solar, conveyor, and warehouse automation applications. Features include zero-backlash, industry-leading misalignment capabilities, and a balanced design that reduces vibration at speeds up to 8,000 rpm.
Learn more.


How Nord-Lock washers work

Can you get a design and functional edge with a wedge? In this animated video, Nord-Lock explains the principle behind their original wedge-locking technology, which secures bolted joints even when exposed to severe vibration and dynamic loads. The company says it is impossible for this washer type to loosen unintentionally, due to the wedge created underneath the bolt head and nut.
View the video.


Copper foam -- so many advantages

Copper foam from Goodfellow combines the outstanding thermal conductivity of copper with the structural benefits of a metal foam. These features are of particular interest to design engineers working in the fields of medical products and devices, defense systems and manned flight, power generation, and the manufacture of semiconductor devices. This product has a true skeletal structure with no voids, inclusions, or entrapments. A perennial favorite of Designfax readers.
Learn more.


New patented wave spring engineered for EV market and more

Rotor Clip has just launched its new, patented InterShim™ Wave Spring design, which has been engineered for high-acceleration electric motor applications. It features alternating turns between inactive (flat) and active (waved) turns to ensure reliable performance under torsional loads and precise rotational movement. The highly customizable wave spring's advanced design addresses physical challenges such as extreme forces and vibrations, making it a versatile solution for high-speed and high-stress applications across various industries.
Learn more.


Tube bending and cutting design guide

Xometry's just-launched downloadable Laser Tube Cutting and Tube Bending Design Guide covers design tips and tricks for cutting parts, including minimums, tolerances, and sizes. The guide also covers important rules for mandrel tube bending, like tolerancing, distance between bends, and bends to avoid. Interested in even more in-depth information? Watch the corresponding on-demand webinar, which introduces how Xometry is bringing AI and machine learning to provide instant pricing and lead time on tube bending and cutting to its Instant Quoting Engine.
Get the guide. No registration required.
Watch the extended Best Practices webinar.


Stratasys, BASF partner on new polypropylene for 3D printing

A new additive manufacturing material from Stratasys and BASF is aimed at driving greater part quality, versatility, and cost efficiency. SAF™ PP is recognized for its exceptional chemical resistance and airtight capabilities, making it the ultimate choice for complex applications across various industries. It can also be welded to other polypropylene components.
Read the full article.


Cam followers with space-saving polymer outer ring design

The new CFL Series cam follower from IKO International boasts a unique, space-saving outer ring design and polymer layer that exceeds the capabilities of conventional resin-type cam followers. Many conventional cam followers press-fit a layer of resin onto the unit's standard outer ring to maintain radial load capacity and provide quiet, clean, and durable operation. However, this thicker assembly makes it difficult to fit into constrained spaces. The CFL Series significantly improves on this design with a polymer layer that is molded directly onto the IKO exclusive thin-walled steel outer ring. This construction solves the dilemma of being able to install a cam follower with special polymers, offering self-lubricating and shock-absorbing properties into existing applications.
Learn more.


Finnish-Dutch business partnership says nanodiamonds boost 3D-printed polymer performance, will offer enhanced filaments

Finnish nanodiamond manufacturer Carbodeon and Dutch 3D-printing specialist Tiamet 3D have announced the first nanodiamond-enhanced filaments for 3D printing.

The Carbodeon/Tiamet 3D filaments are based on a jointly patented technology that significantly improves the mechanical and thermal properties of 3D-printed items.

"By joining forces, we've already developed filaments with a 100 percent increase in tensile strength, improved printability, and better thermal properties," said Reid Larson, CEO of Tiamet 3D. "Printing also runs more quickly and more reliably with the addition of Carbodeon polymer-tailored nanodiamonds."

"Nanodiamonds offer the potential to make 3D-printed components that perform as well as or better than comparable injection molded components, but with massive cost reductions and production speed improvements, especially for prototype, on-demand, and short-run production," said Carbodeon CEO Dr. Vesa Myllymäki.

3D printing using improved-performance thermoplastics has potential in almost all manufacturing environments, but especially in electronics, automotive, and aerospace industries. As well as improving thermal management, conductivity, and tensile strength of the base polymer, nanodiamonds can increase the glass transition temperature of the end product or component to achieve more robust and reliable polymer products, suitable for more challenging environments.

But how does adding nanodiamonds help the final result? Myllymäki told Designfax exclusively, "The way selected nanodiamond addition affects the polymer is affecting both its thermal and mechanical properties. Regarding thermal, both thermal conductivity and glass transition temperature are affected, resulting in enhanced printing speed (three- to fivefold looks possible for the PLA filaments), printed item isotropic strength (better layer-to-layer adhesion), and higher temperature range for said item use." Regarding mechanical properties, Myllymäki said the nanodiamond particles act as a nucleus for crystallization (if distributed well in parent matrix) to enable tailoring of the polymer crystallinity (strength). While tailoring the polymer structure, their dispersion strengthens the composite structure and prevents the movement of dislocations.

Myllymäki told Designfax the nano-sized particles are spherical and applied at very low concentrations -- the concentration varies per application and targeted property, but it is always less than 0.5 wt. percent. The particles don't cause wearing of production tools. From a safety point of view, they are not cytotoxic nor immunotoxic (on the contrary, they are heavily investigated as a drug carrier within many pending biomedical applications). Carbodeon's U.S. agent Silicon Sense and Carbodeon have received EPA registration as the first nano-diamond actor in the United States.

Myllymäki said the detonation nanodiamonds Carbodeon manufactures are 4 to 6 nm spherical diamond particles, with covalently bound surface termination. It is this tailored surface that allows perfect electrostatic coupling of these diamond particles to the applied parent polymer. "Here, we can now select between carboxylated, amine-terminated, and hydrogen-terminated nanodiamonds. In addition to nanodiamond development and manufacturing, Carbodeon has made significant investments in developing nanodiamond material use within various polymer thermal compounds, metal finishing, polymer coatings, CVD seeding, and within 3D-printing filaments."

The first Carbodeon/Tiamet 3D filaments will be PLA (polylactic acid) based, with further development focused on higher-performance thermoplastics. The companies have signed a strategic partnership agreement on joint filament development, along with an agreement for Carbodeon to supply nanodiamond materials to Tiamet 3D.

The newly developed PLA filament product will be available both from Carbodeon and Tiamet 3D. Carbodeon filament products will be sold under the uDiamond® brand.

Source: Carbodeon

Published April 2018

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