Motion Control


C-Flex Bearing Co. (Frankfort, NY) offers a Super Plastic torsional damping coupling that stabilizes high-precision systems by dampening transient torque variations. The patented design offers high-torque loads with zero backlash for positioning in industries such as medical, packaging, and semiconductor. The standard flexible coupling is made up of two high-strength aluminum ends with glass-impregnated polyamide flexures. They are available with both set screws and “No Mark” steel clamp bushings. English and metric versions are available. Bore sizes range from 0.125" to 1.25", and 4 mm to 32 mm. Lattice and servo styles are available in both the Super Plastic and all stainless steel versions. For Free Info Visit

Posted in: Products, Joining & Assembly


Brushless Motor Drive

The DPFlex™ II digital, sensorless, brushless motor drive series from Allied Motion (Amherst, NY) offers speed capability to 150,000 RPM, the ability to drive lower-impedance motors, and software settable rotation direction. Features include outputs up to 48 V and 30 A peak (1200W output power) to drive a wide range of motors, 20:1 speed control range, and detection of motor rotor position at standstill for reliable starting without rotor movement and while under load. For Free Info Visit

Posted in: Products, Motors & Drives


Motion Controller

ACS Motion Control (Bloomington, MN) released the SPiiPlusCMHV line of EtherCAT master motion controllers that can manage networks with up to 32 axes and thousands of I/Os. The modules control networks with one or two axes of integrated drives that operate from 3-phase 230Vac to 480Vac, or 320Vdc to 670Vdc. The controllers offer currents from 5/10A (continuous/peak) to 20/60A (continuous/ peak). For Free Info Visit

Posted in: Products


Robotic Tool Changer

The QC-160 Robotic Tool Changer from ATI Industrial Automation (Apex, NC) has a high moment capacity in a lightweight design, and features internal lock/unlock sensing and five 3/8 NPT and four ½ NPT pass-through air connections. It mounts directly to most 200-kg robots and enhances the robot’s ability to switch end-effectors automatically. The tool changer handles payloads of up to 600 pounds, and features integrated pneumatic ports and electrical connections. Other features include a patented failsafe locking mechanism to ensure high-moment capacity and strength. For Free Info Visit

Posted in: Products, Robotics


Positioning Assemblies

UniSlide assemblies from Velmex (Bloomfield, NY) deliver movement in one, two, or three dimensions with linear motion. The systems also can be customized for specific requirements. They are compact, and the design allows for construction of multi-axis systems. They are available in an array of standard manual or motor-driven models and sizes, including linear assemblies, elevating tables, and XY tables. They can be customized with rapid/fine motion, thumbscrew locks, special finishes, way covers, revolution counters, position encoders, or other options. The assemblies are constructed of a hard aluminum alloy and PTFE bearings. Linear UniSlides have a maximum load capacity up to 400 pounds horizontally, and 100 pounds vertically. Straight-line accuracy with precision lead screws is 0.0015" per 10" or better of the screw motion. The elevating tables and XY tables can lift up to 100 pounds. For Free Info Visit

Posted in: Products, Positioning Equipment


Reactionless Drive Tube Sampling Device and Deployment Method

Springs and a counter-mass create a powerful and stable sampling device. NASA’s Jet Propulsion Laboratory, Pasadena, California A sampling device and a deployment method were developed that allow collection of a predefined sample volume from up to a predefined depth, precise sampling site selection, and low impact on the deploying spacecraft. This device is accelerated toward the sampled body, penetrates the surface, closes a door mechanism to retain the sample, and ejects a sampling tube with the sample inside. At the same time the drive tube is accelerated, a sacrificial reaction mass can be accelerated in the opposite direction and released in space to minimize the momentum impact on the spacecraft. The energy required to accelerate both objects is sourced locally, and can be a spring, cold gas, electric, or pyrotechnic. After the sample tube is ejected or extracted from the drive tube, it can be presented for analysis or placed in a sample return capsule.

Posted in: Briefs, TSP, Motors & Drives


Developing Ceramic-Like Bulk Metallic Glass Gears

This technology has applications in gears, bearings, and gearboxes for automotive, spacecraft, and robotics. NASA’s Jet Propulsion Laboratory, Pasadena, California This invention describes systems and methods for implementing bulk metallic glass-based (BMG) macroscale gears with high wear resistance. This invention creates bulk metallic glasses (BMGs) with selected mechanical properties that are very similar to ceramics, such as high strength and resistance to wear, but without high melting temperatures. Ceramics are high-strength, hard materials that are typically used for their extremely high melting temperatures. Because of their extreme hardness, ceramics are optimal materials for making gears, due to their low wear loss. Unfortunately, ceramics suffer from low fracture toughness (typically <1 MPa·m1/2), and their high melting temperatures prevent them from being cast into net-shaped parts. Ceramic gears, for example, must be ground to a final shape at great expense.

Posted in: Briefs, Ceramics, Metals


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