3 years ago

MDA Technologies 4/2016

MDA Technologies 4/2016

Rexroth’s motors

Rexroth’s motors powering the roller presses in cement industry In the cement industry, roller presses are all-rounders with a wide application spectrum – from raw powder production to crushing of burnt clinker to fine powder. That is why using them always needs to become more efficient and easier. The Austrian company Wopfinger Baustoffindustrie GmbH has therefore changed to Hägglunds CBM motors from Rexroth. With maximum torque of up to 2,000 kNm, the hydraulic direct drives are not only the strongest on the market – they can also increase performance and reduce maintenance as well as service costs. Hägglunds motors delivers their full torque right from the start, hence allowing the the roller presses to be turned at full force from the beginning. High power density CD couplings from Zero-Max Machine designers are continuously seeking new ways to reduce the machine size while increasing output. The CD coupling from the American company Zero-Max, provides precise and reliable shaft connections in less space than other couplings. It operates reliably without fatigue for 24/7 operation. The composite flex element is one of the key design aspects of this CD coupling. It provides high torsional stiffness, yet allows for misalignment in high stress applications. In addition, these zero-backlash CD couplings provide smooth operation at high speeds. The coupling’s high performance material is configured in a compact design, surpassing the performance of much longer couplings. The resulting space savings enables machine designers to reduce the machine foot print, saving the valuable floor space. Designed around Zero-Max’s unique composite center disc, compact CD couplings perform at peak torques in the most hostile operating environments – from extreme cold to hot weather conditions -57 ° to + 121 °C. Time-proven applications include drive trains, gear boxes and generators providing trouble-free operation in sea water and abrasive desert sand conditions. Insert, turn, done Aventics has launched a new sensor series under the name ST6 that can be used in a wide variety of applications. ST6 series proximity sensors are simply “dropped” into the T-slot on the profile cylinder. Next, the captive eccentric screw is fixed with a quarter turn using a flat tip screwdriver or an Allen wrench. In contrast to products from other manufacturers, the installer does not need any special tools. The screw also reliably keeps the sensor in place, even in the event of impact or vibration. Retaining ribs on the side of the sensor enable simple mounting, including in hard-to-reach locations or for overhead assembly. Proximity sensors detect the magnetic field of the piston magnet when the piston is moving within the sensor range. Once a defined threshold has been met, the electronics respond. The ST6 sensor series includes a wide range of versions with different line lengths and connections. Aventics also offers variants with ATEX certification and covers application temperatures from -40 to 120°C with its cold and heat-resistant versions. The sensors are “cULus” certified, protected against polarity reversal, and short-circuit-resistant. Wittenstein alpha unveils its new servo worm gearheads PRODUCT NEWS The newly developed V-Drive Basic will initially be available in two sizes and two standard output types, namely hollow or solid shaft, with a total of five different reduction ratios. A torsional backlash from 10 to ≤ 15 arcmin is specified for all models. The special design and geometry of the V-Drive Basic’s teeth not only provide high speed reserves and efficiency; they also make the servo worm gearhead very quiet and smooth-running – with a maximum of 65 dB(A) at full load and no more than about 50 dB(A) at medium speeds. Apart fromm the V-Drive Basic, There are V-Drive Value and V-Drive Advanced which are fully compatible with the proven V-Drive eco and V-Drive+, but with higher torques and significantly less torsional backlash. Both of these V-Drive upgrade versions are moreover specified for a service life exceeding 20,000 operating hours – roughly 25 to 50 % better than the current market standard. MDA Technologies 4/2016

Capacitive controllers for high speed and precision The new capaNCDT 6222 controller enables even faster displacement, distance and position measurements. The controller is designed for high speed measurements up to 20 kHz and is therefore considered the fastest capacitive controller currently available in the Micro-Epsilon range. This controller is suitable for the monitoring of highly dynamic processes, e. g. shaft run out, oscillation and vibration. The modular controller can be extended up to a maximum of four measurement channels. The integrated ethernet interface supports set up, configuration and measurements via web interface. The flexibility of the new controller is supported by various installation options: the standard product is designed as a benchtop unit; using a simple adapter allows the unit to be mounted on a top-hat rail or to the wall. All capacitive displacement sensors from Micro-Epsilon can be connected without requiring any calibration. In order to improve the accuracy of measurement results, custom characteristics can be stored. As capacitive capaNCDT sensors provide extremely stable results to nanometre accuracies, they are ideally suited to high precision industrial applications. CAD online database for Stauff products Stauff, the manufacturers of pipework equipment and hydraulic components, has successfully completed the expansion of its own CAD online database. Users now have direct access to 3D models and 2D drawings of more than 2,800 different tube connectors and accessory parts at The files provided are native CAD formats which are compatible with all common design and engineering software (SolidWorks, Catia, Pro/E, Inventor, AutoCAD). For designers, this eliminates not only the complicated measuring and drawing of components, but also the import of third-party formats that are not fully compatible with the individual requirements. This online database contains only components in the final assembly state – i.e. with fitting body, sealings, cutting rings and union nuts in their correct positions to each other – while all individual parts can be hidden in the CAD program as required. That saves valuable time and costs during the development process, for example when individual elements have to be replaced or integrated with other components. Stauff offers this service not only for tube connectors and accessories but also for pie, tube and hose clamps, test couplings, filter housings, pressure gauges and other tank and container accessories.