November 06, 2012 Volume 08 Issue 41

Motion Control News & Products

Designfax weekly eMagazine

Subscribe Today!
image of Designfax newsletter

Buyers Guide

Archives

View Archives

Partners

Manufacturing Center
Product Spotlight

Modern Applications News
Metalworking Ideas For
Today's Job Shops

Tooling and Production
Strategies for large
metalworking plants

Low-cost hexapod 6-axis positioner

The PI H-820 hexapod from Physik Instrumente (PI) was developed for applications that require multi-axis motion and high flexibility but do not need sub-micron precision. This new model caters to these needs with linear travel to 100 mm, rotary travel to 60 deg, and a load capacity of 20 kg. High velocity and long service life are guaranteed by direct-drive brushless servo motors. Position repeatability is in the low micron range. A controller and software are included with all PI hexapods.
Click here to learn more.


Expanded planetary gearbox offering

Pittman Motors has significantly expanded its gearbox offerings with the introduction of PLG24, PLG42K, PLG42S, PLG52, and PLG63 planetary gearboxes. These gearboxes are now available with Pittman brush and brushless DC motors and complement Pittman's existing spur and planetary gearbox lines. The new products add 35 standard motor-gearbox family combinations to the Pittman offerings. The PLG planetary gearboxes deliver high torque loads with excellent efficiency and are small, durable, and quiet. These features make them suitable for a variety of OEM precision motion-control applications, including pan/tilt functions, indexing, pumping, conveying, and traction applications.
Click here to learn more.


All-new CadMouse for CAD professionals

Designed using extensive CAD-user input, the 3Dconnexion CadMouse is the first mouse made specifically for CAD professionals. It combines powerful, ergonomic hardware and smart, easy-to-use software. It features a dedicated, full-size middle mouse button; QuickZoom; a smart scroll wheel; an advanced laser sensor; a gesture/radial menu button; and optimally shaped PTFE feet. Power users will have the CadMouse in one hand and the 3Dconnexion wireless SpaceMouse Pro or SpaceNavigator in the other.
Click here to learn more.


Hydraulic motors generate 4X more torque

Dayton Lamina hydraulic motors feature a unique, three-moving-part design that allows four times more torque to be produced at one-quarter the speed without gear reducers. With torque ratings comparable to larger motors, they save size, weight, and cost over larger, similarly rated motors. These low-speed/high-torque, high-speed/low-torque motors feature instant forward and reverse. Six motors are available with a torque range from 0 to 656 in-lb. and speeds from 0 to 2,255 RPM, providing the selectivity required to meet exact project parameters. These proven models are ideal for a wide range of applications, including conveyor drives, hose reel extraction, fan drives, pipe valve openers, thread core removal for plastic injection molding, box sealing equipment, and more.
Click here to learn more.


Compact encoders for OEM designs

Pittman Motors has introduced the PITTMAN E30C and E30D optical incremental encoders to satisfy the demands of volume OEMs for encoders in precision motion control applications. The E30C and E30D encoders are small in diameter and low in profile, yet offer high resolutions and multichannel outputs in an economic design. The E30C and E30D are 5V, 2-and 3-channel optical encoders and are available in 64 different configurations. These encoders are available in kit form and adapt easily to many Pittman motors.
Click here to learn more.


Cool Tools: Wireless 3D SpaceMouse

SpaceMouse Pro Wireless' patented 6-degrees-of-freedom (6DoF) controller cap creates a natural connection between you and your 3D content, while the advanced 2.4-GHz wireless tech puts an end to unsightly cables on your desktop. With 3Dconnexion's SpaceMouse Pro Wireless, users can smoothly pan, zoom, and rotate models and camera views while 15 conveniently positioned buttons provide access to application commands, standard views, and more. Battery life is two months. 3DxWare 10 allows you to customize and optimize your SpaceMouse Pro Wireless for peak performance and tailor settings and buttons to your application and needs.
Click here to learn more.


High-speed motors for medical and dental hand pieces

The new FAULHABER 2057...BHS Brushless DC Servo Motors are designed to address the specific requirements of the medical and dental hand-piece markets. While remaining cool to the touch, the high-efficiency, slotless design features smooth speed control with a wide, continuous duty speed range up to 40,000 rpm. The motors are capable of handling intermittent overload conditions to address highly dynamic motion over shorter cycle times. Low vibration, which reduces user fatigue, and low audible noise are ideal for long periods of use in sensitive medical and dental patient environments. The new motors come standard with digital hall sensors, and analog hall sensor feedback is available on request.
Click here to learn more.


Flyweight motor, heavyweight performance

In the fight for high performance with minimum weight, FAUL-HABER's 3274 BP4 available from MICROMO is the new champion in the ring. This brushless DC servo motor, measuring 32 mm in diameter and 74 mm in length, has massive continuous torque of 165 mNm. Surprisingly, it weighs in at just under 320 g, which is half the weight of conventional motors with comparable power.
Click here to learn more.


How Universal Robots optimized production by 35%

Watch how Universal Robots optimized production by 35% at the milling machine while offering an ROI of 18 months at OTV Plast. Letting the robot arm take over many repetitive manual tasks enabled OTV Plast to bid for orders not possible before.
View the video.


eBook: Compare 11 collaborative robots

Robotic-gripper specialist Robotiq has put together a really informative eBook that includes a review of 11 popular and emerging collaborative robots for industrial applications. An extra comparative chart with all the main specifications of each robot makes the publication all the more useful. Learn key features, pros and cons, and main specifications of robots from KUKA, Bosch, ABB, Universal Robots, Rethink Robotics, and more.
Click here to learn more.


Micro series lead screws in 24 hr

Haydon Kerk Motion Solutions has added Kerk Micro Series lead screws to the Haydon Kerk Express Web store, with three different options available for 24-hr shipment. Standard and "prototype" style nuts also are available. Haydon Kerk lead screws and nuts can be modified to suit an application's dimensional needs. Prototype kits allow engineers to have parts in hand within 24 hr after placing an order. Custom screw materials, such as heat-treated 400 series stainless steel, are available, while custom nut materials, including PEEK and PPS, can be used to meet specific application requirements.
Click here to learn more.


Catalog: Latest Clippard mini pneumatics

Clippard Instrument Laboratory, manufacturer of the industry's most complete line of miniature pneumatic products, has just released their all-new full-line catalog. This edition features over 10 new product lines and includes specifications, technical drawings, and application highlights. Clippard has been serving the needs of design engineers around the world since 1946.
Click here to learn more.


DC tachometer catalog

The new Servo-Tek tachometer catalog includes detailed specifications of all Servo-Tek high-performance DC tachometers for precision speed control applications. A Servo-Tek DC tachometer generator provides a convenient and economical means of converting rotational speed into an isolated analog voltage signal suitable for remote indication and control. While the catalog contains information on their most popular models, Servo-Tek also manufactures countless special tach generators. The 8-page catalog also includes technical info, outline drawings, and assembly and maintenance information.
Click here to learn more.


Tools: Universal Robot launches URCaps 'app store' for UR robots

With URCaps, Universal Robots has created the equivalent of an app store for its lightweight, easily teachable, and highly competent robots. URCaps is a platform where distributors and integrators can present accessories that run successfully in UR robot applications to end users. The online platform features useful accessories, hardware, and software extending the capabilities (or "caps") of the robot arms developed by the Danish robot manufacturer. The first 43 caps, a combination of workbenches, vision solutions, cables, jaws, and grippers, are already featured on the platform and have been through thorough trials and integration testing.
Click here to learn more.


Mini voice coil actuator packs a punch

The small, yet powerful model LAH04-10-000A Linear Voice Coil Actuator (VCA) from BEI Kimco Magnetics delivers a peak force of nearly 0.5 lb and measures just 0.375 in. OD. With a total weight of 0.37 oz, the moving-magnet design produces over 20 times its own weight in terms of force with an operating stroke of 4 mm (0.157 in.). No moving wires and a high heat dissipation make this VCA particularly well-suited for high-duty cycle applications such as pick-and-place machines, remotely controlled switching, medical and laboratory equipment, military and aerospace.
Click here to learn more.


DARPA tests UAV-to-UAV refueling at 45,000 ft

DARPA completes close-proximity flight tests of two modified RQ-4 Global Hawk unmanned aerial vehicles, demonstrates technology enabling autonomous aerial refueling.

Global military aviation currently relies on a key enabler: aerial refueling. Fighters, bombers, reconnaissance, and transport aircraft use "flying gas stations" to go the extra mile.

Increasingly, UAVs are conducting combat and ISR operations, but they aren't designed to be refueled in flight. In 2007, DARPA teamed up with NASA to show that high-performance aircraft can easily perform automated refueling from conventional tankers, yet many unmanned aircraft can't match the speed, altitude, and performance of the current tanker fleet. The 2007 demonstration also required a pilot on board to set conditions and monitor safety during autonomous refueling operations.

But DARPA has been working to close this capability gap.

Global Hawk UAVs demonstrate close-proximity test flight.

 

 

DARPA's two-year Autonomous High-Altitude Refueling (AHR) program, which concluded Sep. 30, explored the ability to safely conduct fully autonomous refueling of UAVs in challenging high-altitude flight conditions. During its final test flight, two modified Global Hawk aircraft flew in close formation, 100 ft or less between refueling probe and receiver drogue, for the majority of a 2.5-hr engagement at 44,800 ft. This demonstrated, for the first time, that High Altitude Long Endurance (HALE) -class aircraft can safely and autonomously operate under in-flight refueling conditions.

The flight was the ninth test and the first time the aircraft flew close enough to measure the full aerodynamic and control interactions for unmanned-to-unmanned connections. Flight data was analyzed over the past few months and fed back into simulations to verify system safety and performance through contact and fuel transfer, including the effects of turns and gusts up to 20 knots.

Since HALE aircraft are designed for endurance at the expense of control authority, the program started with the expectation that only one in six attempts would achieve positive contact (17%). The final analysis, however, indicated that 60% of the attempts would achieve contact.

Multiple autonomous breakaway contingencies were successfully triggered well in advance of potentially hazardous conditions. Fuel systems were fully integrated and ground tested, demonstrating a novel "reverse-flow" approach with the tanker in trail. This approach opens valuable trade space for future developers to choose between various fixed and modular implementations of proven probe and drogue hardware.

"The goal of this demonstration was to create the expectation that future HALE aircraft will be refueled in flight," says Jim McCormick, DARPA program manager. "Such designs should be more affordable to own and operate across a range of mission profiles than systems built to satisfy the most stressing case without refueling. The lessons from AHR certainly extend beyond the HALE flight regime, and insights into non-traditional tanker concepts may offer further operational advantages."

Using this capability, U.S. military Global Hawk UAVS could fly nonstop for days or maybe even weeks.

Source: DARPA

SIDEBAR: Some basic Global Hawk stats courtesy of Northrop Grumman.

Q. How far can Global Hawk fly?

A. It has an inter-continental range (~11,500 miles). This means the aircraft can fly from New York and land anyplace in the world.

Q. How high can Global Hawk fly?

A. About 12 miles high -- an altitude almost twice that of airliners. From this height, you can see over 300 miles to the horizon.

Q. How long can Global Hawk fly?

A. More than 32 hours -- the longest of any high-altitude operational aircraft in the world.

Q. How much can Global Hawk carry?

A. It can carry equipment weighing 3,000 lb -- that's the weight of a Ford Focus.

Published November 2012

Rate this article

[DARPA tests UAV-to-UAV refueling at 45,000 ft]

Very interesting, with information I can use
Interesting, with information I may use
Interesting, but not applicable to my operation
Not interesting or inaccurate

E-mail Address (required):

Comments:

Copyright © 2012 by Nelson Publishing, Inc. All rights reserved. Reproduction Prohibited.
View our terms of use and privacy policy