New Sinamics G120X drive series specializes in infrastructure pump, fan, and compressor applications
Siemens has introduced the new Sinamics G120X drive, a simple, seamless, and easy-to-use drive designed for use in pump, fan, and compressor applications in industries such as water/wastewater, HVAC/R, irrigation/agriculture, and in industrial environments. Sinamics G120X has a power range of 1 to 700 hp (0.75 to 630 kW) and can operate in temps from -4 to 140 F (-20 to 60 C) with any standard motor, including synchronous reluctance motors (SRM). It has an integral DC choke that improves harmonics and EMC performance. Sinamics G120X meets all the latest and upcoming UL, NEMA, and EN/IEC standards for 2019 and beyond and offers up to 100-kA short-circuit current rating (SCCR), ensuring enhanced product safety and energy efficiency.
High-speed, high-precision mechanical gantry system
PI has added to its family of precision automation sub-systems with the A-351 MGS, a compact mechanical gantry system engineered to deliver maximum throughput for applications that require controlled precise overhead motion. The gantry is driven by linear motors, and each axis is equipped with preloaded linear bearings. Applications include high-precision 3D printers, assembly, pick-and-place, alignment, inspection, and other industrial automation applications. The A-351 MGS gantry system is designed for high load capacity of 20 kg, twice the amount of its A-341 air-bearing-based sibling. Absolute-measuring linear encoders with nanometer resolution are optional.
See PI automation platforms in action.
New inductive-technology position sensors
Novotechnik's TF1 Series touchless linear position sensors overcome issues with legacy magnetostrictive technology. They are unaffected by strong magnetic fields and metal flakes or filings present in a user's environment. The TF1 Series consists of an inductively coupled position marker attached to a moving rod/piece of the user's application that requires a position measurement and the sensor with operational and programming status LEDs. While operating, LEDs indicate whether the sensor is operating and the marker within measuring range or out of range, as well as indicating results of internal diagnostics for valid output from the sensor. Can also measure speed and temperature.
High-traction robot goes underground
Recent developments in motion control and engineering make it possible to inspect and perform maintenance in compact sewers from the inside. The underground sewer robot is equipped with a swiveling camera and an air-powered milling machine driven by FAULHABER miniature DC motors from MICROMO.
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How to convert from hydraulic to electric high-force linear actuators
Machine designers are converting existing linear motion systems from hydraulic to electric due to the technology's many benefits, but the process involves considering the actual force output of the cylinder, the duty cycle, and the motion profile. Specialists at Tolomatic tackle these points. Includes a very informative video.
Read the Tolomatic blog.
Gain more torque with a cooler-running motor
The slim-design G3718V whisper torque motor from Lin Engineering incorporates a heat-sink design within the stator laminations to allow for passive cooling. When your motor operates cooler, you can increase power to gain more torque without overheating, or you can save energy and still perform at optimal performance. At only 22.8 mm long, this motor produces 25 oz-in. of torque.
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Quiet 3-to-1 speed reducers use traction drive technology for 98% efficiency
Rolling Motion Industries (RMI) has released two new traction drive speed reducers. With only six moving parts, they typically outlast conventional gearboxes and speed reducers by a factor of three. The MAR17-1-3.1 Speed Reducer is designed for input speeds up to 3,600 rpm with 10 to 20 in.-lb of torque, and the MAR-23-1-3.1 Speed Reducer is rated for the same speeds but with an input of 20 to 30 in.-lb of torque. As the output speed is reduced by a factor of three, the output torque increases by a factor of three. These high-efficiency speed reducers generate up to 72 percent less heat because they use a special engineered fluid that cools and lubricates the traction drive.
Smart Sensor checks condition of bearings
ABB has launched the ABB Ability Smart Sensor for Dodge mounted bearings, part of the ABB Ability Digital Powertrain, that enables "health checks" for bearings. The smart sensor technology provides an early indicator of any potential problems by assessing the condition of bearings from vibration and temperature information. Eighty percent of bearing failures are lubrication related, and a bearing "running hot" can indicate that proper lubrication procedures are not in place. Monitoring a bearing's vibration can also indicate potential system problems. Prevent downtime on applications such as bulk material-handling conveyors as well as applications in the food-and-beverage and air-handling sectors.
New industrial-grade optical encoder from Quantum Devices
The Model QDH20 encoder provides an improved feedback solution in applications typically using a standard size 20 package. It features superb mechanical and environmental protection. Outputs consist of a quadrature A & B with reference pulse Z as a standard feature. The output can be configured with either the industrial standard 5- to 26-V OL7272 line driver or open collector outputs. Two heavy-duty bearing sets hold the output shaft, and two more bearings (along with an integral flexible spring mount) isolate the working pieces of the encoder from mechanical stresses. Features include 500-kHz fundamental frequency response, high operating temp option (100 C), and resolutions up to 5,000 lines per revolution direct read. Available through Servo2Go.
Single-cylinder engines for combustion research
Southwest Research Institute (SwRI) has designed and manufactured two advanced single-cylinder engines for combustion research and friction analysis, as well as alternative fuel, wear, optical, crank offset, and bore-to-stroke relationship studies. The engines, one for light- and medium-duty applications and one for heavy-duty applications, can accommodate either multi-cylinder or single-cylinder heads through a custom cylinder barrel and head support shelf. They include several unique patent-pending innovations, including mechanisms that adjust compression ratios and crankshaft offsets without the need for disassembling the engine. Optical access, dynamic cam phasing, secondary balancers, and floating liner devices can be added to the standard configurations. Specs available in online "Single-Cylinder Research Engine" flyer.
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Hybrid gantry stage provides precision XY/XYZ motion with linear motors, air bearings, and ball bearings
PI's new A-341 hybrid gantry XY/XYZ positioning stage provides the framework for controlled precise overhead motion that is often sought after for 3D printing, assembly, pick-and-place, alignment, inspection, and industrial automation applications. The A-341 HGS hybrid gantry is designed to combine maximum throughput with smooth and highly accurate motion in a compact envelope. It features a unique hybrid bearing design. The cross axis utilizes a frictionless air bearing guiding system, which allows for excellent velocity control, repeatability, straightness, and cleanliness. The lower dual-motor axis uses precision mechanical linear bearings for rigidity and reduced size. This combo offers an overhead gantry motion platform optimized for step and scan applications in the smallest possible form factor.
Micro-brakes for precise motion control applications
The ultra-compact 112 Model Electromag-netic Micro-Brakes from Miki Pulley ensure fast response in high-torque, demanding applications. The simple design features a stator with integrated mounting flange, proprietary composite friction liner, and armature complete with ring plate spring and hub. These brakes halt rotation mechanically by utilizing an electromagnetic field to create mechanical friction. With fast response, the brake's armature engages the stator when the coil is energized. A constant-force plate spring transfers torque to the rotating brake body, halting all motion.
Electric high-force linear actuator choices: Ball vs. roller screw
Many applications require high-force linear actuators -- from moving equipment in a foundry to powering a press in metal forming to guiding heavy logs in a sawmill. Whatever the application, a machine designer is faced with a choice: whether to specify a ball or roller screw in the electric high-force linear actuator. Learn how to make the best decision for your application.
Read the Tolomatic blog.
Using SmartMotor data to diagnose linear actuator performance problems
Effective troubleshooting of a motion control system problem can be a daunting and time-consuming process, even for seasoned automation professionals. However, the Moog Animatics SmartMotor fully integrated servo, with built-in controller and firmware, is constantly monitoring a variety of operating parameters. This case study investigates how that data can be used to quickly and effectively troubleshoot and resolve a motion control system problem.
Read the Moog Animatics article.
Advantages of electroformed metal bellows
Servometer metal bellows manufactured using our patented electro-deposition process create flexibility, protection, motion, and balance for systems requiring precise, repeatable results. This exclusive manufacturing technology produces electroformed bellows that offer unique characteristics such as high-strength but lightweight construction and custom engineered geometries. Learn more by viewing our "Electroforming Basics of Miniature and Specialized Components" white paper.
Read the white paper (no registration required).
Researchers create nanoscale inchworm motor
Just as a person would grab and pull a rope hand over hand, a new micromechanical motor developed at the University of Maryland pulls a tiny silicon beam with enough force to lift a toothpick.
Assistant Professor Sarah Bergbreiter (ME/ISR) and her student Ivan Penskiy of the University of Maryland, College Park, developed an inchworm motor that is simple to manufacture and provides significantly greater force than similar efforts.
Flexible arms are used to alternately grab and pull a tiny silicon beam thousands of times per second, moving only a couple micrometers at a time. This action is similar to that used in muscle. These motors can be used to someday power a tiny insect-size robot or provide autofocus and zoom in a smartphone camera.
Flexible arms help the shuttle (center) of this nanomotor move.
The motor is also very efficient due to its use of electrostatic actuation, in which two tiny silicon plates are pulled toward each other when a voltage is applied. Penskiy and Bergbreiter optimized the layout of these plates along with the flexible arms that they drive to improve efficiency in addition to force output. The researchers made the device in the University of Maryland's Fab Lab, where only a single etch was required to pattern these plates and flexible arms on a silicon chip.
The researchers will next work on integrating this motor with mechanical structures like legs along with tiny power supplies for integrated microrobots.
Source: University of Maryland
Published February 2013
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