Keyword: Gears

NASA Spinoff: Robotics, Automation & Control
A bulk metallic glass could slash prices of collaborative robots and lead to advanced 3D-printed metals.
Briefs: Nanotechnology
Oscillatory and rotational motions of different parts are combined to pave the way to developing super-miniaturized mechanical devices.
Briefs: Mechanical & Fluid Systems
A catalytic reaction causes a two-dimensional, chemically coated sheet to spontaneously morph into a three-dimensional gear.
Briefs: Aerospace
This lightweight material brings strength and durability to complex shapes.
Briefs: Mechanical & Fluid Systems

A set of five tiny fundamental parts can be assembled into a wide variety of functional devices including a tiny “walking” motor that can move back and forth across a surface or...

Briefs: Transportation

NASA Goddard Space Flight Center developed gear bearing technology that combines gear and bearing functions into a single unit that significantly improves gear drives for electrical, internal combustion, and turbine motors. The...

Application Briefs: Communications

EMAG L.L.C. is the U.S. subsidiary of a major German machine tool builder that specializes in machine tools for the production of automotive, off-highway, agricultural, and oil field...

Briefs: Mechanical & Fluid Systems

For many highly stressed engineering applications like bearings and gears, contaminated steel parts can lead to devastating outcomes such as an emergency shutdown or the end of a mission. Ensuring that these critical...

Application Briefs: Transportation

Materials testing and characterization is often a lengthy process. It can take more than a year and billions of testing cycles for a manufacturer to characterize the properties of a new...

Briefs: Manufacturing & Prototyping

CAD models have been developed that enable objects to be 3D-printed out of commercially available plastics; these objects can wirelessly communicate with other smart devices, including a...

Application Briefs: Motion Control

The launch, landing, and overall mission of NASA’s Mars Science Laboratory (MSL) is arguably one of the most daring — and successful — space exploration endeavors ever...

Articles: Robotics, Automation & Control
EJBot: Versatile Climbing Robot for Industrial Vessel Inspection Dr. Mohamed Gouda Alkalla and Mohamed Fanni
Mansoura University
Mansoura, Ad-daqahliyah, Egypt...
Briefs: Motion Control

Origami robots are composed of thin structures that can fold and unfold to change shape. They are compact and lightweight, but have functional restrictions related to size, shape, and...

Briefs: Robotics, Automation & Control

There are instances when items (e.g., supplies) need to be lowered from an aerial vehicle to the ground. For example, the United States military often lowers supplies from a rotary winged aircraft...

Articles: Motion Control

Scanning is a common technique in applications ranging from high-resolution microscopy to industrial material processing. Scanning involves moving either a workpiece or an...

Articles: Motion Control

Gears play an essential role in precision robotics, and they can become a limiting factor when the robots must perform in space missions. In particular, the extreme temperatures of deep space pose...

Articles: Motion Control
Positioning: Resolution and Accuracy

An application’s required positioning resolution dictates the choice of encoder resolution. A well-tuned system can maintain the position within one encoder state...

Briefs: Materials

NASA’s Glenn Research Center has developed a new method for producing a shock- and corrosion-proof, superelastic, intermetallic material, NiTiNOL 60 (60NiTi),...

Briefs: Mechanical & Fluid Systems

NASA Glenn researchers have developed a spoked drive mechanism for robots and other vehicles that is capable of two rotational modes. This robust ground traction (drive) assembly for remotely controlled vehicles...

Application Briefs: Robotics, Automation & Control

Motion control is essential for the digitization and automation of high-tech equipment, but bearings remain basic to frictionless movement. Bearing Engineers, a bearing...

Briefs: Materials

Ti-based bulk metallic glasses (BMGs) and matrix composites (BMGMCs) are a subset of the class of materials known synonymously as amorphous metals, liquid...

Briefs: Mechanical & Fluid Systems

A novel, miniature, low-mass vehicle has been created that is driven by piezoelectric stacks and a resonance structure. Preliminary tests on similar mechanisms that are used to transmit...

Briefs: Robotics, Automation & Control
Tension-Stiffened and Tendon-Actuated Space Manipulators

The Space Shuttle Remote Manipulator System (SRMS) and Space Station Remote Manipulator System (SSRMS) have proven the benefit of long-reach manipulators, with the reach of both manipulators in the l5-18-m class. Manipulators with greater reach provide many benefits. The SRMS’s limited...

Briefs: Imaging

Optical indexing wheels, sometimes called “filter wheels,” are used to locate various optics or filters in a beam path to change the observational mode. Large wheels a half-meter in size...

Briefs: Manufacturing & Prototyping
Process for 3D Printer Filament Fabrication

Conventional filament extrusion processes are unsuitable for recycling materials on the International Space Station due to requirements for continuous monitoring and tuning, as well as poor filament dimensional control. The Positrusion process recycles scrap or waste thermoplastics into filament for 3D...

Articles: Robotics, Automation & Control
Compact, Long-Reach Robotic Arm

William R. Doggett, John T. Dorsey, George G. Ganoe, Thomas C. Jones, and Cole K. Corbin, Langley Research Center...

Articles: Robotics, Automation & Control

Although there are a number of variations of drive technologies for motion applications, there are a few that are used for the majority of systems being built today. These most common drives do take a bit...

Articles: Motion Control

When first introduced, brushless DC motors, despite their many advantages, were cast as a costly alternative to brush-commutated motors, and were typically only specified for low-power...

Application Briefs: Robotics, Automation & Control

Expansion valves are flow-restricting devices present in any refrigeration system. The valve needle remains open during steady state of operation. The size of the opening, or position of the...