Motion Control

Weldable Couplings and Collars

A line of weldable shaft collars, couplings, and mounts is available from Stafford Manufacturing Corp. (North Reading, MA). The components are made from ANSI 1018 steel and stainless steel to allow users to modify parts and create assemblies without fasteners. Typical modifications include brackets, cams, lever arms, mounts, pins, and rods. They are suited for the design and repair of special machinery, conveyors, packaging systems, and racks. The weldable shaft collars are available in one- and two-pieced, and hinged styles. Flange mounts are offered in ¼" to 6" bore sizes, and weldable shaft couplings are available in ¼" to 2" bore sizes. Smooth-, hex-, and square-bores for shafts, pipe, and tube can be supplied.

Posted in: Products, Manufacturing & Prototyping, Motion Control

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Linear Guide Kit

To simplify product selection of self-lubricating linear guides, igus (East Providence, RI) has developed a modular construction kit for belt-driven DryLin ZLW linear axes. The ZLW toolkit enables users to customize their solutions, including rail widths, system length, etc., even for small installation spaces. Cross beams, rails, and/or carriages are available in either aluminum or stainless steel to suit a wider range of application requirements. The ZLW system enables loads up to 165 lbf. to be lifted with stroke lengths of up to 3 meters (118"). Wide drive belts can also permit speeds of more than 5 m/s (16 ft./s), depending on the load. Underwater applications are possible via a special toothed belt.

Posted in: Products, Manufacturing & Prototyping, Motion Control

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Actuators

Curtiss-Wright Sensors & Controls Division (Gilbert, AZ) announced Exlar® brand FTX Series actuators. The high-force electric rod style actuators replace hydraulics in highforce, high-duty-cycle applications in harsh environments. Based on planetary roller screw technology, the actuators offer a compact form factor. With continuous force rating to 178 kN (40,000 lbf), speed to 875 mm/sec (34 in/sec), and stroke lengths from 150 mm (6 inches) to 900 mm (3 feet), the actuators can be applied across a range of linear motion applications.

Posted in: Products, Manufacturing & Prototyping, Motion Control

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Automation Cables

Molex, LLC (Lisle, IL) offers Flamar industrial automation cables for signal and control equipment and servomotors. The cables are available in multiple jacket materials (PVC, WSOR, PUR, TPE). The standard cables range from 26 AWG to 10 AWG for applications in food and beverage, material handling, automotive lines, and other manufacturing operations. The cables are rated for temperature ranges down to -40 °C (-40 °F) and up to 105 °C (221 °F). They are compatible with all standard industrial connectors, including RJ45, the Brad® range of circular connectors (M8, M12, M23) for servomotors, and mPm® DIN valve and Molex Heavy Duty connectors.

Posted in: Products, Manufacturing & Prototyping, Motion Control

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Precision Ball Screws

Thomson Industries (Radford, VA) has introduced miniature metric precision ball screws in three interface styles: flanged, threaded, and rounded. The FSI metric ball screws are flanged, and the RSI style is rounded. Both feature a multi-liner ball return system that provides smooth operation and increased load capacity. The miniature ball screws are available in a range of standardized diameters from Ø6 mm – Ø14 mm. Flexible ball nut mounting configurations and rapid prototyping are options for the ball screws.

Posted in: Products, Manufacturing & Prototyping, Motion Control

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Servo Drives

The MR-J4-TM multi-network servo drives from Mitsubishi Electric Automation (Vernon Hills, IL) are available with Ether Net/IP™ and EtherCAT® interfaces. The drives feature dual 100BASE-TX Ethernet ports in line, tree, and star topologies; One-Touch Auto-Tuning; 2.5 kHz speed frequency response for short settling time; high-resolution 4,194,304 pulse/revolution absolute encoders; and Advanced Vibration Suppression Control II for vibration suppression on both the load and the machine base. The drives also come with add-on instructions for EtherNet/IP networks using ControlLogix® or Compact - Logix® controllers.

Posted in: Products, Manufacturing & Prototyping, Motors & Drives

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Process for Forming a High-Temperature Single Crystal Preloader

Non-contacting, acoustic pressure seals and preloader superalloys prevent fluid leakage.Friction has long been a thorny problem for sealing-device designers. Traditional sealing devices rely on a contacting relationship between surfaces and sealing elements to prevent fluid leakage, but in the case of moving elements, this contact produces friction that causes wearing and eventual failure of the sealing system. Friction also consumes energy and produces harmful debris. In a new breakthrough, however, researchers at NASA’s Glenn Research Center have patented an acoustic seal that generates a pressure barrier to prevent fluid leakage from a high-pressure area. Instead of using contacting components as a seal, the patented seal employs acoustic technology to generate pressure waves that control, mitigate, or prevent fluid leakage. The result is a very low-leakage, non-contact seal that eliminates problems associated with friction. In addition, when traditional seals are needed in extremely high-temperature environments, Glenn innovators have developed new processes to enable the fabrication of single-crystal superalloys that can increase the upper limit of thermal seals to greater than 2000 °F.

Posted in: Briefs, Mechanical Components, Mechanics, Fluid Handling

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