March 12, 2019 Volume 15 Issue 10

Mechanical News & Products

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Miniature MGX gearheads for precision devices

The SDP/SI compact gear train provides excellent accuracy with optional torsional spring anti-backlash design. Ratios available from 5:1 to 1,521:1. Miniature sizes from 0.5 in. O.D. to 1.75 in. O.D. Stock sizes and customized solutions with special gear ratios and near-zero backlash gearing also available. MGX gearheads are designed, precision manufactured, and assembled with world-class quality by SDP/SI.
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AutomationDirect adds GAM helical racks and pinions

Rack-and-pinion systems are a type of linear actuator consisting of a rotating pinion that drives a linear rack, converting rotary motion to linear motion. The new GAM helical racks and pinions, along with a broad offering of gearboxes, can provide a complete linear solution for your application. High-precision helical racks provide smooth, quiet operation. Pinions can be mounted to SureGear gearboxes, are hardened, and work with ISO 10 hardened racks. Components with module pitches of 1.5, 2.0, and 3.0 are available.
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Did you know you can tint chrome?

Push the boundaries of design. SRG Global, a leading manufacturer of chrome-plated and painted plastic parts for the automotive, commercial truck, and household appliance industries, has introduced its G-Coat tint-over-chrome process solution. G-Coat delivers distinct metallic surface finishes for both exterior and interior applications and regularly improves paint adhesion to any chrome-plated plastic part. It offers nearly unlimited custom color options, including a high-optical-density deep black finish not achievable by other technologies. The process also provides enhanced corrosion protection and fingerprint resistance and meets multiple automotive OEM performance standards for basecoat and clear-coat paint systems.
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Micro molding material selection and design concerns

Design engineers can create the most incredible parts using the micro molding process, but any design at the micro scale (ranging in size from just microns to a half inch) requires careful attention to things that might not be a big deal for larger parts. This article by Aaron Johnson from Accumold focuses on important issues concerning material choice.
Read the full article.

Desktop Metal qualifies titanium for its Studio System 2

Desktop Metal has qualified the use of titanium alloy Ti-6Al-4V (Ti64) for its Studio System 2, a metal 3D-printing platform that offers customers an easy way to print high-performance metal parts in low volumes for pre-production and end-use applications. Desktop Metal is the first and only company to make the material commercially available for extrusion-based bound metal additive manufacturing technologies. Ti64 is the most widely used titanium alloy and is characterized by its high tensile strength, corrosion resistance, and biocompatibility.
Learn more about the Ti64 offering.
Learn about the Studio System 2.

More compact and adaptable side thrust pins

Side thrust pins for part holding are practically indispensable elements of jig construction and are available in a wide range of variants. Nevertheless, there are applications that demand particularly compact designs that should also be easy to adapt to different requirements. These are exactly the situations JW Winco had in mind with the new standard parts family GN 415. GN 415 is available in three sizes between 0.87 and 1.54 in. (22 to 39 mm) wide, each with two spring strengths. The two available slide types and the wedge-shaped or cylindrical, rounded thrust pad not only hold parts with side pressure but also exert an additional downward force.
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Xometry launches instant quoting for binder jet 3D printing of metals

Xometry, a leading AI-enabled marketplace for on-demand manufacturing, has just announced the availability of instant quoting on metal binder jetting in its Instant Quoting Engine. The parts will be made through Xometry's partner ExOne, an industry-leading metal 3D-printing company. Metal binder jetting is a 3D-printing technology used to make complex metal parts with excellent mechanical properties. Machines bond layers of metal powder together with a binding agent before final sintering in a furnace. It can produce metal parts at a fraction of the cost of other methods with virtually no design limitations.
Learn all about this exciting 3D-printing tech.

Mini shock absorbers: High energy damping in tight spaces

ACE Controls' MC75 Miniature Shock Absorbers (length of 2.77 in.) can provide high energy damping in tight installation spaces in industrial manufacturing, material handling, packaging, medical, electronics, and robotics applications. They are perfect for decelerating loads quickly and without recoil in machines, among other uses. They include a robust construction and one-piece outer body filled with temperature-stable oil. They're also self-compensating, so they react to changing energy conditions without adjustment.
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Conserve precious liquids in non-pressurized systems with Siphon Fed No Drip Nozzle

EXAIR's new 1/8 NPT No Drip Siphon Fed Air Atomizing Spray Nozzles provide consistent and even flow of non-pressurized liquid for applications like marking, lubricating, rinsing, cooling, quenching, wetting (moistening), dust control, and humidification. The intelligent design of this Siphon Fed spray nozzle allows for the absence of liquid pressure and, in turn, uses gravity fed liquids or lifted liquids from a siphon height of 36 in. (91 cm) with the added benefit of positively stopping liquid flow when compressed air is shut off. Available in round and flat fan liquid patterns.
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New! Revolutionary Revolox™ Self-Locking Retaining Ring

Rotational capacity requirements for modern applications are higher than ever, especially in electric motors, gearboxes, and automotive transmissions. Smalley's latest retaining ring innovation, the Revolox Self-Locking Ring, features a "dimple and slot" design that safely and efficiently secures your application at high speeds.
Read the full article.

Bring production-ready nylon 3D printing to your benchtop

Formlabs has released the world's first benchtop industrial selective laser sintering (SLS) 3D printer, the Fuse 1, along with Fuse Sift (a post-processing system for the Fuse 1) and Nylon 12 and Nylon 11 powders. SLS technology has long been trusted by engineers and large manufacturers for its ability to print strong, functional prototypes and end-use parts, but its high cost and complex workflow have historically confined access to big companies. The Fuse 1 and Fuse Sift improve on the unique advantages offered by SLS while bringing it within reach for companies of all sizes and types through affordability and ease of use.
Learn more.

How to choose: Linear shafts vs. posts vs. rotary shafts

According to Carlicia Layosa at MISUMI, "Linear shafts, posts, and rotary shafts are used when you need to control some type of motion, either linear or rotary, or a combination of the two," but do you know the difference between these options and what applications are best for each?
Read this informative MISUMI blog.

Magnetic couplings 'mechanically isolate' shafts and motor

Magnetic couplings from Miki Pulley are ideal for machine designs involving food, pharma-ceutical, and laboratory applications requiring clean, non-contact connection between motor and shafts. The mechanically isolated magnetic coupling transmits torque through the air. This occurs through both input and output hubs of the coupling, which contain powerful rare-earth magnets. These magnets create a magnetic field that transmits torque through plastic, glass, aluminum, and other minimally ferrous materials without physical engagement. There is no dust, debris, or mechanical wear using this coupling compared to conventional couplings. It can also act as a torque limiter in an over-load event.
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New adhesive for aerospace manufacturers

AeroPaste is Solvay's new generation of epoxy-based structural paste adhesives that provide film-like property and performance, comparable or superior to leading film adhesives on the market. AeroPaste 1006, 1009, and 1100 are now available commercially. These products are suitable for both metal and composite bonding or repair in a variety of application requirements and are designed specifically to enable rapid assembly and automation. AeroPaste is aimed at increasing manufacturers' efficiency and output by enabling fast and easy application, and offering excellent tolerance to variations in bondline thickness.
Learn more.

Handle basic misalignments starting at 10 bucks

Automation-Direct has added SIM drive couplings to their line of mechanical power transmission products. SIM drive couplings are power transmission components used to couple the shafts of various mechanical devices, often of different sizes, and compensate for shaft misalignment. Four different styles of couplings are available: Jaw/Spider couplings provide a wide range of fitment and higher torque, Oldham couplings provide a higher speed rating and allow for a higher misalignment of mated shafts, servo beam-style couplings add a significant increase to speed rating and have zero backlash, while high-gain couplings offer the highest speed ratings, excellent vibration absorption, and zero backlash.
Learn more.

Fireproof, self-powered sensor can track firefighters in burning buildings

McMaster University researchers in Ontario, Canada, working with partners at other universities, have created a motion-powered, fireproof sensor that can track the movements of firefighters, steelworkers, miners, and others who work in high-risk environments where they cannot always be seen.

The low-cost sensor is about the size of a button-cell watch battery and can easily be incorporated into the sole of a boot or under the arm of a jacket -- wherever motion creates a pattern of constant contact and release to generate the power the sensor needs to operate.

The fireproof sensor can track the movements of firefighters and others who work beyond the line of sight in high-risk environments. [Credit: McMaster University]



The sensor uses triboelectric, or friction-generated, charging, harvesting electricity from movement in much the same way that a person in socks picks up static electricity walking across a carpet.

The sensor can track the movement and location of a person in a burning building, a mineshaft, or other hazardous environment, alerting someone outside if the movement ceases.

The key material in the sensor, a new carbon aerogel nanocomposite, is fireproof, and the device never needs charging from a power source.

"If somebody is unconscious and you are unable to find them, this could be very useful," says Ravi Selvaganapathy, the professor of mechanical engineering who oversaw the project. "The nice thing is that because it is self-powered, you don't have to do anything. It scavenges power from the environment."

The research team -- from McMaster, UCLA, and University of Chemistry and Technology Prague -- describes the new sensor in a paper published March 1, 2019, in the journal Nano Energy.

The researchers explain that previously developed self-powered sensors have allowed similar tracking, but their materials break down at high temperatures, rendering them useless,

A self-powered sensor is necessary in extreme heat because most batteries also break down in high temperatures. The researchers have successfully tested the new technology at temperatures up to 300 C -- the temperature where most types of wood start to burn -- without any loss of function.

"It's exciting to develop something that could save someone's life in the future," says co-author Islam Hassan, a McMaster PhD student in mechanical engineering. "If firefighters use our technology and we can save someone's life, that would be great."

The researchers hope to work with a commercial partner to get the technology to market.

Source: McMaster University

Published March 2019

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