Rexroth Linear Motion System
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Tuesday, 11 January 2011 02:37

Rexroth Linear Motion System: Linear Drive Solution for Vacuum Environments

Rexroth’s complete solution for material handling in cleanroom and vacuum applications simplifies high-precision workpiece transport under demanding process conditions. The innovative technology greatly simplifies the design of highly complex production lines and eliminates the need for failure-prone seals on motors, mechanical subassemblies and supply lines.

(Pleasanton, CA) In the semiconductor and solar industry tools need a reliable mechanism to transport wafers into, within and out of chambers for various processes like deposition or etching. Rexroth’s Linear Motion System has a proven track record as a high-precision drive solution in PECVD (Plasma Enhanced Chemical Vapor Deposition) applications under vacuum conditions on photovoltaic cell production lines. A coil mounted outside the process chamber drives the carrier with a magnet track mounted on it. Hall sensors ensure excellent repeatability. The solution is highly modular and scalable: by simply adding more coils, the carriers can be driven over longer distances. The Rexroth NYCe 4000 integrated drive & control system can handle a wide power range. The carriers are driven independently and can have different motion profiles, providing a solution which can handle complex motion operations.

The linear drive system delivers reliable operation under any of the process conditions which are needed to manufacture displays, optical components, photovoltaic cells and semiconductors including vacuum, inert gas or temperatures up to 110°C. The innovative technology greatly simplifies the design of highly complex production lines and eliminates the need for failure-prone seals on motors, mechanical subassemblies and supply lines.

The Rexroth NYCe 4000, which has been optimized for semiconductor and solar applications, controls high-precision positioning and motion profiles which are gentle on the process material. Every node in the distributed network controls up to 10 linear drive coils and communicates via a bus system with the control software which is loaded in a PC. High-end motion control featuring open software architecture provides an extremely flexible automation solution for modules and complex machines, and it offers OEMs excellent know-how protection.

Programming using the flexible C-interface shortens the development cycle. Users have comprehensive motion functionality at their fingertips which enables them to meet demanding speed and precision requirements. Up to 120 digital and analog I/Os are available to connect sensors and handle very complex process steps. The modular system design is ideally suited for large machine engineering projects.

Bosch Rexroth AG is one of the world’s leading specialists in the field of drive and control technologies. Under the brand name of Rexroth the company supplies more than 500,000 customers with tailored solutions for driving, controlling and moving. Bosch Rexroth is a partner for industrial applications and factory automation, mobile applications and renewable energy. As The Drive & Control Company, Bosch Rexroth develops, produces and sells components and systems in more than 80 countries. In 2009 Bosch Rexroth, part of the Bosch Group, achieved sales of around $5.7 billion (4.1 billion Euro) with 34,200 employees.

Cranfield Precision's Friction Drive Range
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Saturday, 25 December 2010 12:53

Precision Linear Drive

Cranfield Precision's Friction Drive Range - linear drive systems for ultra smooth, backlash free linear motion.

Cranfield Precision has developed a range of friction drive units which are totally backlash free offering higher levels of accuracy than achievable with conventional linear drive systems. The friction drive unit's main advantage is in the positioning accuracy, which is not affected by backlash like conventional ballscrews or rack and pinion systems. Backlash can be modelled as pure time delay in a mechanical system and combined with mechanical resonances, restricts the ability to extend the position loop band-width. Accuracy with the friction drive is such that it can fully exploit the resolution attainable from a position sensor, such as a laser interferometer to less than 2.5 nanometres.

Friction drive units are most suited to applications which require extremely smooth motion and nanometer repeatability. Typical applications are; Scanning Machines, Precision Feed Drives (for turning and grinding machines) and High Accuracy Co-ordinate Measuring Machines.

Friction drive units can be built to suit various applications with varying requirements. The profile and size of the "drive bar" and "drive roller" can give different charcterisitcs for traction, acceleration and maximum velocity. Cranfield Precision has used friction drives on small in-feed carriages to large 26 tonne bridges used as seen on the Large Off Axis Grinding Machine.

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Thursday, 23 December 2010 13:41


Cimcorp’s research and development work for LCD manufacture has resulted in a modular traverse unit, which can be used for glass robots as well as other articulated arm robots.

In LCD manufacture more than half of all robots need a traverse unit. The traverse unit increases the working area of the robots and enables the same robot to serve several process machines.

Last year Cimcorp started a new research and development project. The aim was to develop equipment for the handling and moving of seventh-generation glass substrates in the LCD manufacturing process. The traverse unit and a glass substrate robot have been developed hand in hand.

Now Cimcorp’s traverse unit is ready for mass production. The prototype has been tested and accepted. The tests have proven that the traverse unit is rigid and vibration-free, and is particularly suitable for LCD production. The modular traverse unit can easily be adapted for stroke lengths of 0.3 m – 10 m.

This successful development project was completed quickly, thanks to Cimcorp’s vast experience as a manufacturer of linear robots.

Southwire Agrees to Acquire Assets of American Insulated Wire from Leviton
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Monday, 20 December 2010 14:33

Click here to find out more!Southwire Co., Carrollton, Ga., announced this week that it has signed a definitive agreement to purchase certain assets of Rhode Island-based American Insulated Wire Corp. (AIW), a subsidiary of Leviton Manufacturing Co.

Southwire will acquire the AIW brands and two manufacturing facilities — one in Douglas, Ga., and one in Coffeyville, Kan. Both plants produce a variety of electrical wire and cable products for commercial, industrial, retail and OEM markets. The purchase is expected to close by the end of February.

“Acquiring AIW will allow us to diversify our product offering while continuing to strengthen our position in our core copper building wire business,” said Stuart Thorn, Southwire CEO, in a Southwire release.

Leviton, Melville, N.Y., has owned AIW since purchasing it in 1936, and has built the company over time into a visible brand selling portable cords and other products through retail home centers as well as electrical distribution. Selling AIW to Southwire signals a shift in Leviton's focus, said Don Hendler, president and CEO of Leviton, in a separate release.

“As we continue to shift our offering to more value-added systems and solutions, we no longer see AIW's wire and cable products as strategic to the future direction of the Leviton Company,” said Hendler.

At Southwire, AIW joins a large and still growing product base of wire and cable and related products, including building wire and cable, metal-clad cable, FlatWire Ready products, cord products, utility cable products, industrial power cable, OEM wire products, copper and aluminum rod and continuous casting technology.

Southwire last year also became a supplier of wire and cable installation tools for commercial, industrial and utility construction markets with the acquisition of Phoenix-based Maxis.

Last Updated on Monday, 20 December 2010 14:39
Interwire 2011 is alive with possibilities
Written by Administrator   
Sunday, 19 December 2010 16:25

Interwire 2011 is alive with possibilities

Relocated and familiar, Interwire returns to the city of its origin—Atlanta, Georgia, USA—May 3-5, 2011, for the most complete program offered in its 30-year history.
With a streamlined profile reduced from four days, to three, the agenda is lively and the content is relevant representing every industry sector—the result of the skillful guidance of senior executives from more than 25 key industry corporations.

The exhibits feature technology and information from the more than 500 companies that are represented. Exhibit space in Hall A of the Georgia World Congress Center, now 97% accounted for, is rapidly approaching sold out status.

Interwire Show Floor
Interwire Show Floor

Theme days are new. Metals & Materials; Manufacturing Best Practices; and Green Initiatives are the backbeat themes that set the rhythm of activities each day from technical sessions and roundtable discussions to speakers and networking topics.
More than 90 distinct elements comprise the technical conference, which is the most robust offering ever, featuring technical paper and operational presentations, courses, production solutions, a productivity workshop, panel discussions, guest speakers, and an engaging keynote speaker who will be announced in the coming weeks.

On the nonferrous front: A Global Continuous Casting Forum is a standalone program for copper practitioners, running May 2-5 in conjunction with Interwire.

Southwire will host a tour of its nearby facility as part of the preliminary program on Monday, May 2.

From the ferrous perspective:  Support for Interwire extends to the American Wire Producers Association (AWPA) and its 2011 Symposium which will be held May 2-3, 2011, at the GWCC.

The opening reception on Tuesday, May 3, is a much-anticipated networking event which will reunite familiar colleagues and provide a valuable opportunity for visitors from 50 countries to meet and greet other guests and discuss the international wire and cable industry.

Last Updated on Sunday, 19 December 2010 16:31
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