Category Archives: Motion

Modular and flexible servo press

FlexiPRESS is the name given to the new flexible servo-press from Parkem. Its progressive modular design enables optimisation of costs and generation of maximum added value for the integrator as well as the end customer.

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The user therefore only purchases the equipment and functions really necessary. FlexiPRESS clearly distinguishes itself from the turnkey servo presses which often propose too many unnecessary functions and add-ons with a consequent negative effect of the utility-price ratio.
FlexiPRESS is based on Parkem linear actuators, either with screw and planetary gear rollers or tooth and ball gear, with a stroke of 25 to 1,600 mm. The torque ranges from 0.1 to 180 kN. When required, a load sensor may be incorporated and protected in the module.
The multifunctional load measurement control system comPRESS combines a load regulator and a servo regulator in a single control system to reduce communication time and obtain a high level of precision. It is foreseen with all common field busses and may be incorporated into all environments. Depending on the applications, the load measurement functions of the easyPRESS software package may be combined with the comPRESS control system.
FlexiPRESS is perfectly suitable for integration into any production lines, installations or presses as required in an advantageous, fast and flexible manner. The easyPRESS software package may be used in subsequent projects without the purchase of an additional licence.

Flexible und modulare Servopresse
flexiPRESS ist die neue, flexible Servopresse von Parkem. Dank mehrstufigem Aufbau garantiert sie Kostenoptimierungen und maximale Wertschöpfung beim Integrator und Endkunden. Denn es soll nur in die effektiv benötigte Hardware und Funktionalität investiert werden. Dadurch unterscheidet sich die flexiPRESS deutlich von schlüsselfertigen Servopressen, welche oft zu viele Funktionen und Features bieten und so ein schlechtes Kosten/Nutzen-Verhältnis darstellen.
Parkems Elektrozylinder mit Planetenrollen- oder Kugelgewindetrieb mit 25 bis 1600mm Hub bilden die Basis der flexiPRESS. Das Kraftspektrum reicht von 0.1 bis 180 kN. Der Kraftsensor ist auf Wunsch geschützt im Modul integriert.
Die multifunktionale Kraftmess-Steuerung comPRESS vereint Kraftregler und Servoregler in einer Steuerung. Dies reduziert die Kommunikationszeit und sorgt für hohe Genauigkeit. Sie verfügt über alle gängigen Feldbusse und lässt sich in jede Umgebung integrieren. Je nach Applikation werden die miteinander kombinierbaren Software-Kraftmessfunktionen easyPRESS in der comPRESS-Steuerung eingesetzt.
flexiPRESS eignet sich ideal für die Integration in Produktionslinien und Anlagen oder für Pressenapplikationen, welche günstig, schnell und flexibel realisiert werden sollen. Die easyPRESS-Software kann für identische Folgeprojekte wiederverwendet werden, es entstehen keine weiteren Lizenzkosten.

www.parkem.ch

More versions, more power – the new DCX motors and GPX gearboxes

Now even stronger, more efficient and with yet more combination options: There are new additions to the maxon family of X drive products. Several long versions of brushed DC motors, with higher torques and more power, are being added to the product range, together with matching planetary gearheads. Each of the 3-stage versions can now be combined with the next smaller motor. This saves space, weight and costs.
Overview_maxon
Two years ago, maxon motor presented a new generation of brushed DC motors – the maxon X drives. These are extremely powerful, easy to configure online, and ready for shipment within 11 days. Now, four more motor sizes are being added to the existing portfolio. The 14, 16, 22 and 26 mm diameter models are now each available in a long version (L), which offers higher continuous torque and higher continuous output power.

Motors, planetary gearheads
At the same time, maxon motor is presenting four new GPX planetary gearheads, in the sizes 14, 19, 26 and 37 mm, which feature perfect compatibility. All of these gearheads are designed with scaled gear stages. The biggest news is that each of the new 3-stage gearheads can be driven with the next smaller motor. This brings many advantages, as the resulting drive system is smaller, lighter and more economical.

..and much more
That’s not all: Starting immediately, the existing GPX 16 and GPX 32 models are available in various versions and can be equipped with ceramic axles to reduce wear. Customers looking for a particularly low-noise gearhead have the option of choosing plastic planet gears. maxon has also expanded the encoder portfolio. The new ENX 16 Easy absolute encoder is available as an SSI or BiSS-C version, according to the customer’s requirements. All new products are available in the online shop starting immediately. They can be easily configured together with the other maxon X drive products: Customers choose the desired motor, the matching winding, brushes and shaft length, as well as the gearhead and encoder. The configured product is ready for shipment in 11 days or less. For more information, go to dcx.maxonmotor.com.

maxon motor ag
Brünigstrasse 220
P.O. Box 263
CH-6072 Sachseln
Tel:+41 41 666 15 00
Fax:+41 41 666 16 50
[email protected]
www.maxonmotor.com

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…brought to you by Eurotec-Online.com

Innovative two-channel NC system for machine tools with up to five axes

NUM is showing its new two-channel CNC kernel for the first time in the US at IMTS.  There are still two days available to discover it there!

NUM’s latest Flexium+ 8 CNC kernel offers two CNC channels and accommodates up to five axes, four of which can be interpolated.
NUM’s latest Flexium+ 8 CNC kernel offers two CNC channels and accommodates up to five axes, four of which can be interpolated.

Designed specifically for developers of small to medium sized machine tools with four or five axes, the Flexium+ 8 CNC provides an exceptionally cost-effective control solution that in many cases eliminates the need for a second CNC kernel. NUM is also launching a new version of its 3D simulation software which now includes kinematic equations to support advanced 5-axis machining applications.

As if many kernels
The Flexium+ 8 CNC kernel offers two CNC channels and accommodates up to five axes, four of which can be interpolated. At any one time, either CNC channel can be used to control a spindle motor and four axes, instead of the full complement of five axes. This control flexibility helps designers to lower the cost of machines with complex synchronisation requirements. For example, on a grinding machine, one channel could control two X/Z axes and a spindle to perform the grinding functions while the other channel controls two rear mounted U/W dressing axes. Each channel can either run its own part program asynchronously and operate autonomously – much as if it had a dedicated CNC kernel – or the two channels can be synchronised. Control of one to five axes, or a spindle, can be passed on-the-fly from one channel to the other, to maximise use of available hardware resources.

Dedicated simulation software
For maximum flexibility, NUM offers two versions of Flexium+ 3D simulation software. One is designed for standalone use without a CNC system, as a production planning tool for verifying part programs. The other is fully integrated with the Flexium+ HMI (human machine interface) and is connected to the machine’s CNC system. Unlike many competitive CAD/CAM visualisation systems, this uses the NC code that is being processed by the CNC interpolator to create a true real-time representation of machine operation. Part programs can be simulated at the same time that other programs are being executed on the machine, and the same part program can be executed and simulated simultaneously. The simulator visualises the tools, the machine’s kinematic properties and the work piece blank as 3D volumes, and shows the TCP (tool centre point) and material removal as the tool moves along the machining path defined by the part program.

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The latest release of NUM’s Flexium+ 3D simulation software includes algorithms for the RTCP function to support advanced 5-axis machining applications.
The latest release of NUM’s Flexium+ 3D simulation software includes algorithms for the RTCP function to support advanced 5-axis machining applications.

NUM AG
Battenhusstrasse 16
CH-9053 Teufen
Tel: +41 71 335 04 11
[email protected]
www.num.com

 

NUM is active in social media. To become a follower visit https://twitter.com/NUM_CNC

Chase to catch up with a comet

After more than ten years of travel through space, the European space probe Rosetta has reached the comet Chury. Three months from now, for the first time in the history of space travel, a lander will touch down on the surface of the four-kilometer-wide comet. DC motors manufactured by maxon are part of this pioneering feat.

Churyumov-Gerasimenko is the destination of the European Space Agency's Rosetta mission, launched on 2 March 2004.[8][9][10] The Rosetta spacecraft rendezvoused with the comet on 6 August 2014, with plans to enter orbit after approaching to within 30 km (19 mi) five weeks later.[11][12][13] Rosetta will study the comet and identify a suitable landing site for its lander, Philae; the landing is scheduled for November 2014.
Churyumov-Gerasimenko is the destination of the European Space Agency’s Rosetta mission, launched on 2 March 2004. The Rosetta spacecraft rendezvoused with the comet on 6 August 2014, with plans to enter orbit after approaching to within 30 km five weeks later. Rosetta will study the comet and identify a suitable landing site for its lander, Philae; the landing is scheduled for November 2014.

On August 6, the big day came: After a journey of more than ten years, the Rosetta space probe reached the comet 67P/Churyumov-Gerasimenko, known as “Chury” for short. The mission team at the European Space Agency (ESA) jumped for joy. For the first time in the history of space travel, a probe has rendezvoused with a comet. It will now orbit and map the comet and gather various types of data. Already, the first images received have yielded astonishing new insights: The comet Chury, which is four kilometers wide, is not round or oval, but instead looks like two rocks loosely stuck together. At minus 70 °C, the surface is much warmer than expected and the first information indicates that it is covered with a black layer of dust.

First choice for space missions
Rosetta will now gradually approach the comet, until a distance of only 10 kilometers separates them. The most difficult part of the mission will take place in mid-November 2014, when the Philae lander is scheduled to touch down on Chury. It will be the first controlled landing on a comet. A real pioneering feat – and maxon motor is part of it, with a DC motor on board. This is not the first time that the micro drives from Switzerland have been the first choice for space missions. SpaceX’s Dragon spacecraft, which transports cargo to the ISS station, also contains maxon motors. The same holds true for the Mars rovers, which have been diligently traveling across the surface of the red planet for many years.

maxon motor ag
Brünigstrasse 220
Postfach 263
CH-6072 Sachseln
Phone +41 666 15 00
Fax +41 666 16 50
www.maxonmotor.com

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CNC advances to be demonstrated at BIMU and IMTS 2014

Exciting new developments in machine tool CNC hardware and software technology will be demonstrated by NUM at IMTS. Highlights will include a highly cost-effective dual channel CNC kernel for designers of small to medium size machines with up to five axes, a functional safety architecture that can easily be scaled to suit any type of machine, and new grinding software for complex geometry tools.

On show at IMTS 2014: NUM will be demonstrating exciting new developments in machine tool CNC hardware and software technology on booth E-5135.
On show at IMTS 2014: NUM will be demonstrating exciting new developments in machine tool CNC hardware and software technology on booth E-5135.

Forming the latest addition to NUM’s market-leading Flexium+ CNC platform, the dual channel Flexium+ 8 CNC kernel provides an exceptionally high level of control flexibility. At any time, either CNC channel can be used to control a spindle motor and four simultaneously interpolated axes – and control can be passed on-the-fly from one channel to the other. This simplifies the design of complex machines with multiple synchronisation requirements, such as thread or gear cutters, and in many cases eliminates the need for a second CNC kernel. NUM will also be providing software demonstrations of complete conversational and cycle solutions developed specifically for the North American market. Based on Flexium+ systems, these include solutions for gear hobbing, shaping and grinding, OD/ID grinding and metal spinning.

Functional safety
The functional safety architecture, known as Numsafe, is compatible with all NUM Flexium+ CNC systems. It provides machine builders with a highly flexible means of implementing functional safety functions and can be scaled to suit almost any type of machine tool, regardless of complexity or the number of axes. Key benefits include minimal additional hardware and wiring.

Tool grinding software
For the first time in the USA, NUM will be showing the new version of its market-leading Numroto tool grinding software, which now includes functions for complex geometry tools such as multi-helical end mills with variable width flute areas.

NUM’s booth – E-5135 – is located in the East Building at McCormick Place.

NUM will also be exhibiting at Asiametal – Guangzhou and Bimu – Milano in September.

NUM AG
Battenhusstrasse 16
CH-9053 Teufen
Tel: +41 71 335 04 11
[email protected]
www.num.com

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Repeatability of 0.5 µm over a 500 mm travel range

For precise positioning tasks in precision fabrication and automation, PI (Physik Instrumente) now offers the M-417 stage with a repeatability of 0.5 µm over a 500 mm travel range.

The new positioning stage from PI for high precision with 500 mm Travel Range.
The new positioning stage from PI for high precision with 500 mm Travel Range.

The drive of the M-417 comprises an efficient ActiveDrive DC motor with integrated 24 V amplifier that acts on the ball screw. Thanks to this structure, the stage achieves a velocity of 100 mm/s and is at the same time designed for high duty cycles. The recirculating ball bearings allow for a very high guiding accuracy of 100 µrad over the entire travel range. An incremental, motor-shaft-mounted rotary encoder controls the position with a unidirectional repeatability of 0.5 µm. The M-417 stage is 120 mm wide and 56 mm high. Its stress-relieved aluminum base ensures the stage’s high stability.

Efficient Drive Principle: DC Motors with ActiveDrive
By eliminating power losses between the amplifier and motor, the ActiveDrive System achieves an increased efficiency. The motor is controlled via pulse-width-modulated (PWM) signals. The operating voltage is obtained with an amplifier integrated in the motor case. Costs are reduced and the setup is more compact, because no external linear amplifier is needed. In addition, noise radiation is eliminated, since amplifier and motor are mounted together in a single shielded case.

Assets:

  • High duty cycles and velocity to 100 mm/s
  • Low crosstalk, ±100 µrad over the entire travel range
  • Efficient ActiveDrive DC servo motor
  • Direction-sensing reference point switch
  • Design resolution to 0.5 µm
  • Min. incremental motion to 0.5 µm
  • Noncontact limit switches

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Further Information available at:
http://www.physikinstrumente.com/…

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…brought to you by Eurotec-Online.com

Opportunity celebrates 10 years on Mars

Ten years ago, the NASA rovers Opportunity and Spirit landed on Mars. It keeps going and going and going. “It is equipped with maxon brushed DC motors” the company proudly announced recently.

Mars rover Opportunity. Image credit: NASA/JPL-Caltech
Mars rover Opportunity. Image credit: NASA/JPL-Caltech

Today, Opportunity is still exploring Mars – an unbelievably long time, considering the robot was only designed to last about 90 days. It has covered a distance of approximately 39 kilometers so far and continues to roam around a vast area. On board, 39 maxon brushed DC motors can be found.

On January 25, 2004, the Mars rover Opportunity landed in the Eagle crater. Since then, it has been investigating the planet for NASA (National Aeronautics and Space Administration), a USA agency responsible for the exploration of space. It has examined a number of craters, dunes, and flats, always searching for traces of water. It did not take long before Opportunity found first indications (sediment structures, minerals) that there used to be water on Mars. The Mars rover is able to take photos, brush the ground and drill into stone and it continues to do so today. “The rover is in exceptionally good condition for its age”, says John Callas, a manager at NASA. However, things haven’t always been easy for the rover in the past ten years. Its wheels have become stuck in the sand requiring a very difficult maneuver to release them once again. Sand storms disabled the solar panels and prevented the batteries from recharging. Opportunity is now starting to show a few small symptoms of aging: the 185 kg robot has a bit of “memory loss” – every now and again, its hard disk shows signs of wear caused by the long period of use.

39 km and 39 maxon drives
With drives manufactured by maxon motor, Opportunity has been able to safely navigate the surface of Mars for ten years. The rover contains a total of 39 brushed DC motors that are all still operating reliably. They are used to drive the robotic arm, the Rock Abrasion Tool (RAT), the cameras, the control mechanism and the wheels of the rover. The motors are standard products with diameters of 20 to 25 millimeters and an efficiency of over 90 percent. Minor modifications were necessary to adapt the DC motors for the harsh environmental conditions: the temperature on the surface of Mars fluctuates between approximately -120 °C and +25 °C.

This speaks about reliability of maxon motors (as well as all other pieces of equipment on the robot) indeed, but also about human genius. We at Eurotec haven’t thought to use Opportunity to spread the microtechnology messages of our customers to the red planet!

www.maxonmotor.ch

The RE 25 and RE 20 DC brushed motors from maxon motor have been working on Mars for an entire decade.
The RE 25 and RE 20 DC brushed motors from maxon motor have been working on Mars for an entire decade.

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…brought to you by Eurotec-Online.com