Check Out Schubert: The Complete Symphonies, Vol. 1 for $14.91

Schubert: The Complete Symphonies, Vol. 1 Best

Rate This Product :

Customer Reviews

*** Product Information and Prices Stored: Feb 15, 2012 13:43:17

Micromech Offers Complete Linear Motion Solution

Micromech's Promech linear actuators from Parker are for OEM instrument manufacturers looking to speed time to market and reduce the overall installed cost for linear motion axes. Promech Series LP28 and LD28 actuators come completely assembled and tested and include linear bearings, drive screw, thrust bearings, motor mount, coupling and motor. With a travel range from 5mm to 500mm, the LP28 has several linear bearing options and a variety of leadscrew and motor size options to match the positioner to the application requirements.

This compact actuator is suitable for positioning payloads up to 4.5kg and may also be fitted with optional seal strip, home and limit sensors. The LD28 is a complete linear actuator solution that offers greater screw and motor design flexibility, enabling OEMs to pursue optimal solutions for their applications. It offers a travel range from 5mm to 300mm and is offered with a variety of options to match the actuator to application requirements.

The LD28 is also suitable for thrusting applications requiring up to 4.5kg of thrust. The LP28 has a miniature cross section of 28mm x 28mm, is designed with an optimal length-to-travel ratio, has a high-performance leadscrew drive train and re-circulating linear bearing. Some competitive miniaturised drive trains use the radial bearings in the step motor to contain the motor rotor, manage thermal expansion as the motor heats, and bear the axial loads generated by the application.

In some cases this is an acceptable practice, but may prove to be a reliability risk further down the road. The LP28's bearing design results in a highly reliable and long life positioner, said Micromech. The leadscrew options are 1mm, 3mm and 10mm, and NEMA 11 or NEMA 17 stepper motors are included as standard. Fully adjustable home and limit sensors are available and the actuators can be configured for multi-axis platforms. The design has an extruded aluminium body that provides functionality and structural strength.

Internally, the drive train is highly integrated and includes the drive screw, screw nut, independent pre-loaded thrust bearing set, shaft coupling and motor. Externally, an optional linear bearing may be used to support heavier or cantilevered payloads. Installation is performed using toe clamp mounting. Home and limit sensors, which are triggered by a magnet in the carriage assembly, may be mounted using the T-slot and are fully adjustable over travel. The LP28 is engineered for transport of small payloads over distances as short as 5mm and as long as 500mm.

The LP28 is commonly used in life sciences, medical and semiconductor equipment although it is not limited to these markets. Typical applications include transport of 0.45kg to 0.9kg payloads such as microplates, vials and small syringe pumps. In inspection applications, the LP28 can be used as a focus axis for adjusting the position of a camera, optics or payload. The LP28's light weight also makes it suitable for mobile equipment. It is available with multiple lead options to match payloads over the life of the actuator.

The LD28 is also a miniature cross section actuator 28mm x 28mm and has an independent thrust bearing set resulting in a high thrust per package size. It can have either stepper (NEMA 11 or NEMA 17) or servomotor; it has backlash compensation and a high-performance leadscrew drive train with options of 1mm, 3mm and 10mm leadscrew. Designed for OEMs needing simple positioning solutions for instrument and light industrial applications, the Promech range of positioners offers a complete positioning solution.

The LD28 is also a packaged linear actuator having all the same 'completeness' attributes as the LP28 being fully assembled and tested. The Promech LD28 is engineered for thrusting small payloads over distances as short as 5mm and as long as 300mm. In addition to the standard configurations, the LD28 actuators can be customised to address the unique requirements of a particular high-volume application. These modifications may further reduce the installed cost and can include special motors (stepper, servo or DC), motors fitted with rotary encoders, special screws (finer leads, ballscrews, special nuts), and environmental preparation (vacuum, high temperature).

Here again the LD28 is commonly used in life sciences, medical and semiconductor equipment, although it is not limited to these markets. Typical applications include syringe pumps and positioning stages and its light weight makes it suitable for mobile equipment.

MAX2172 Provides Complete Digital-Tuner Solution

Maxim Integrated Products has introduced the MAX2172 digital radio tuner for FM and digital audio broadcast (DAB) signals, with a high sensitivity for the FM, VHF and L-band frequency ranges. This device integrates all components necessary to implement a complete tuner solution, including LNAs, mixers, an IF filter and a fully synthesised local oscillator.

Additionally, the IC integrates a front-end tracking filter to eliminate interference between the UHF, VHF and FM bands. An on-chip received signal-strength indicator (RSSI) and temperature sensor ensure fast and accurate scan and seek functions. The RSSI provides +/-2dB accuracy and outputs the measured level in digital form through the I2C bus. FM sensitivity is -111dBm (typ) and FM adjacent-channel performance meets ETSI EN 55020.

Drawing 61mA (typ) from a single 3V supply, the MAX2172 strikes an excellent balance between performance and power consumption, making it ideal for consumer and automotive applications. The MAX2172 utilises a standard 2.048MHz IF frequency that is compatible with most DAB digital demodulators. The device is packaged in a lead-free, 6 x 6mm 40-pin TQFN and is fully specified over the -40 to +85C extended temperature range. An evaluation kit is available to speed designs.

Hydrafeed Announces Complete Bar Feed Range

Hydrafeed has been working on expanding its range of conventional bar feeding products and its automated range of component handling products. The barfeed manufacturer now offers a complete range of short magazine bar feeds as well as full-length magazine type coupled with additional automation products for any CNC turning centre. The Multiservo short magazine bar feed is now able to complement the fastest of machine tools to minimise feeding cycles, with features that can remove the bar feed cycle time in some instances.

New methods now enable bars to be loaded, measured and prepared while the machine is working on an already loaded bar, thereby reducing dead time on the lathe to virtually zero. The benefits of this application are most apparent when the Multiservo is fitted to highly productive sliding head or twin-spindle fixed-head machines. The range has been expanded with the Autofeed long-magazine bar-feed set, which will be available with up to 65mm bar capacity by the end of the year.

A new quick-change guide channel means that bar changeovers can now be achieved within the allotted down time parameters of most lean manufacturing facilities. A short magazine bar feed was introduced earlier in 2009 and this has been developed from previous models to include extra features. Hydrafeed customers can now get a constant display of the length of the bar remaining plus linear rails throughout the bar feed on the MV65 model. This policy has been adopted across the complete range of products with research and development remaining an important part of Hydrafeed's business.

The manufacturer is also able to provide special bespoke systems with the most recent of these projects being a support system allowing a propeller shaft manufacturer in the south of England to support duplex material up to 7m long and 150mm in diameter. The project is said to have allowed the Hydrafeed customer to offer improved lead times on products and cut costs.

The company is currently working on a project to feed special shaped extrusion and assisting a medical manufacturer with improving the general automation of its CNC turning centres. The Rota-Rack is one of the latest additions to the Hydrafeed stable. The stand-alone product is designed to safely collect finished components as they come off CNC equipment, providing true lights-out production.

It has been specifically designed to manage large volumes of components where traditional methods of conveying do not adequately protect the parts. Available since March, the Rota-Rack is being used with one customer now using six systems that are all coupled with the Multifeed short-magazine bar feed. This allows the customer to free up staff for other shop-floor tasks while the machines run unmanned.

Install, Connect – Done! "Solutionising": Complete Solutions Improve Efficiency

Individually designed, complete packages of solutions comprising products, services and tested, ready-installed subsystems (modules) – with its "solutionising" concept, Lenze is helping to create more efficient processes for its customers. As a result, it is also reducing the costs of plant and machinery throughout the value-added chain. Lenze's "solutionising" idea is one of the three columns that it uses, in its capacity as a trusted partner specialising in drive and automation technology, to make a positive contribution to improving its customers' competitiveness.

The other columns are skilled drive optimisation, or "optimising", and a scalable product portfolio that means all tasks, whether simple or demanding, can be solved perfectly and that costs can be optimised by applying the "rightsizing" principle. Ready-installed, tested subsystems simplify logistics, data maintenance and resource management and provide effective support when implementing systems and complex machinery concepts. This frees up capacity for strategically important tasks.

Electronic modules combine frequency inverters, small control systems, contactors, relays, control software and the required wiring, for example, to give a control cabinet solution that is ready to be connected - and of course they come with the necessary certifications such as CE, UL or cUL. The specialist in drive and automation technology also offers appropriate customised, tested system cables to run from the control cabinet all the way to the drive axis.

As for electromechanics, Lenze Group's Geared Motors are efficiently combined at the factory with spring-applied brakes, manual releases, customer-specific mechanisms, flanges or sprockets, for example. As all the components are already fully wired in the terminal box, these solutions can be connected to a frequency inverter straightaway.

Example applications from the field include drives used in revolving doors and paternoster lifts, as well as control cabinets used to control actuating drives in solar engineering. "With our "solutionising" concept we are making a valuable contribution to the value-added chains of our customers," says Thomas Jaufmann, Head of Lenze Component Manufacturing at Waiblingen.