Miniature spindle for linear positioning tasks

The maxon GP 6 S spindle gear

The maxon GP 6 S spindle gear

The maxon GP 6 S spindle gear

The GP 6 S micro spindle gear has a diameter of six millimeters and is now also available in a metal version to provide a spindle drive with optimized value.

Spindle drives are the perfect solution for linear positioning systems, lens adjustment, or syringe pumps. If the drive also has to be compact, then maxon motor’s GP 6 S spindle gear is the perfect choice. To provide a cost-effective alternative to the ceramic version, it is now also available with a metal spindle.

Combinations with maxon DC motors

The GP 6 S spindle gear is suitable for a wide variety of linear drive solutions. The maximum feed velocity is 15 mm/s, at a force of 10 N. Integrated ball bearings ensure that this drive stands up to high axial loads. The gear easily combines with the maxon DC brushed motor (RE 6) and DC brushless motor (EC 6).

More data and details about the new metal version of the GP 6 S spindle gear are available online at www.maxonmotorusa.com.

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A brushless DC motor for demanding operating room applications

A sterilizable EC-4pole 30 from maxon motor

A sterilizable EC-4pole 30 from maxon motor

A sterilizable EC-4pole 30 from maxon motor

maxon’s new brushless electric motor, the EC-4pole 30, delivers high torque (106 mNm) and is sterilizable – a perfect drive for hand-held surgical tools.

Swiss drive specialist maxon motor has developed a robust brushless DC motor for hand-held surgical tools: the EC-4pole 30. Featuring two pole pairs, this DC motor provides a nominal torque of 106 mNm and an output of 150 W. It has a hermetically sealed rotor, meaning that it can withstand over 1000 autoclave cycles.

Need to operate at overload? No problem!

The EC-4pole 30 is equipped with the special ironless maxon winding, which makes it highly efficient. Another key feature is that the torque and current behave linearly and the drive can be overloaded. It is available with an optional Hall sensor, as well as with a hollow shaft with a diameter of up to 4.1 millimeters.

With the EC-4pole 30, engineers get a first-class drive for surgical hand tools that work flawlessly under the tough conditions of operating rooms.

maxon offers a complete line of dc brushed and brushless motors, gearheads and controllers. Contact us to help find the right solution for your application. info@maxonmotor.com

Brushless DC motors for down hole and directional drilling.

Directional Drilling

Directional Drilling

The recovery of petroleum and natural gas requires constant innovation and improvement of technology. This technology used for deep drilling processes are exposed to extreme environmental conditions. Temperatures of 200+°C, high pressure and extreme shock and vibration. Brushless DC motor technology from maxon motor is utilized in various drilling applications, hydraulic valve control, communication mechanisms and measuring instrumentation.

Today over 85 percent of the world’s energy use is based on fossil fuel sources such as coal, oil and gas. However, reaching these resources requires the need to drill deeper than ever before which is not a simple exercise. Down hole deep drilling equipment opens the possibility of recovering resources from depths greater than 2.5km. Recent developments allowing down hole drilling equipment to be directionally controlled has given access to formerly inaccessible oil reserves. Now drilling to 5km down and 11km across is even possible.

Extremely tough environmental conditions are commonplace globally for drilling equipment, the demands on the drill head in particular are at their highest. Brushed and brushless DC motors need to withstand the intense vibration, pressure and heat. The heavy duty brushless DC motor range produced by maxon motor are not only designed for but are rated and tested to meet these conditions. Combined with new electronics technology they allow for improved control and monitoring of drilling procedures.

Mud flow power and more.

Using magnetic couplings a back driven motor becomes a generator. Using the mud flow for the drill turbine the brushless DC motor power is then harnessed for localized electronics in the drill head avoiding the need for batteries. The drill head position can also be detected and adjusted on the fly. This process is called Measurement While Drilling (MWD). This technology converts sensor data into pulses that are transmitted to the drilling platform. maxon heavy duty motors can actuate the mechanism, forming the communication pulses. maxon heavy duty DC motors also actuate hydraulic valves within the drill head.

Heavy Duty Brushless DC Motor. © 2012 maxon motor

Heavy Duty Brushless DC Motor. © 2012 maxon motor

maxon heavy duty motors are also available with corresponding gearboxes. The gearboxes are manufactured with the same extreme operating environments in mind. The applications typically require elevated torque for very low duty cycles. For example: Generating the mud pulses and actuating the hydraulic valves. A unique feature of the heavy duty gearbox is the through holes in the gear housing. These are ports that allow the gearhead to be submerged in oil and they facilitate the possibility for oil to circulate through the gearbox and provide elevated heat-sinking. The heavy duty DC motor also contains the oil ports and may also be used submerged in oil or in free air. The gearmotors are manufactured entirely without structural adhesives giving it the capability of withstanding extreme temperatures. This is also of particular importance when using the motor in vacuum conditions avoiding the contamination of the vacuum via outgassing. The heavy duty motor range is designed to withstand temperatures over 240°C at pressures up to 1,733 atmospheres. They can withstand vibrations to 25 Grms, impacts to 100 G.

High efficiency DC motors at great depths
The maxon heavy duty motor range features efficiencies of up to 88% in air and over 70% submerged in oil. This makes it an ideal solution for any extreme environment such as aerospace and heavy industry. They have zero cogging making them easy to control and suitable for precise positioning.

maxon’s ESCON Controllers

Roger Hess, Sales Engineer, discusses maxon’s line of ESCON motor controllers. These controllers were designed for dc brushed and brushless motors. You can configure the drive using maxon’s ESCON studio.

High performance drive in a small package

maxon's NEW brushless EC4mm motor and gearhead

maxon’s NEW brushless EC4mm motor and gearhead

maxon sets new standards in micro drives

maxon’s smallest DC brushless motor is only four millimeters in diameter and comes in two different lengths. Certified in accordance with ISO 13485, the new brushless micro drive is ideal for medical applications.

The EC 4 brushless DC motor is maxon motor’s ultra-compact solution to the market’s needs. As the smallest micromotor to come from the Swiss manufacturer, the EC 4 is only four millimeters in diameter. It is available in two lengths, with power ratings of 0.5 and 1 W. Equipped with an ironless maxon winding, the EC 4 stands out for its robust design, high power density, and energy efficiency.

EC4 measuring tool

EC4 measuring tool

maxon has the matching gearhead

Combined with the GP 4 planetary gearhead, the EC 4 becomes a compact drive for use in micropumps, analytic and diagnostic devices, and laboratory robots. Precise and reliable, it can adjust lenses, dispense fluids, or position sensing devices. All units meet the ISO 13485 medical standard, which makes this maxon micro drive the perfect choice for applications in medical technology.

maxon offers a complete line of dc motors, gearheads and controllers. Contact us to help find the right solution for your application. info@maxonmotorusa.com

Circulatory Support without Surgery for Heart Failure Patients

The cardiac pump is a mere 6 millimeters and 6.5 centimeters long. Image ©Procyrion

The cardiac pump is a mere 6 millimeters and 6.5 centimeters long. Image ©Procyrion

Intra-aortic pump powered by miniature brushless DC motors provides heart failure patients an aid to help hearts rest and heal.

Chronic heart failure patients draw hope from a new technology. A team of life science entrepreneurs in Houston, Texas has developed the first catheter-deployed circulatory assist device intended for long-term use. Procyrion, Inc.’s Aortix™ provides a minimally invasive treatment option for the more than two million chronic heart failure patients in the USA alone who are too sick for medication. This pre-clinical cardiologist tool dramatically reduces risks associated with circulatory support devices and enables treatment of younger, healthier patients before progressive damage occurs.

Assisting the natural function of the heart, the intra-aortic pump has been thoughtfully designed as an alternative to large, cumbersome surgical devices currently providing full circulatory support. Unlike these devices, Aortix provides minimal procedural risk. Measuring approximately 6 mm in diameter and 6.5 cm long, a cardiologist can deliver Aortix via a catheter in the femoral artery to the descending thoracic aorta. Once the catheter sheath is retracted, the self-expanding nickel-titanium anchors deploy to affix the pump to the aortic wall.

Aortix accelerates a portion of the body’s native blood flow within the pump and pushes it through fluid entrainment ports directed downstream. The jets entrain native aortic flow, transferring energy to the cardiovascular system and increasing blood flow to vital organs such as the kidneys. Additionally, in a model of chronic heart failure, Aortix decreased energy consumption of the heart by 39 percent, allowing the heart to operate more efficiently, encouraging cardiac rehabilitation and recovery.

The cardiac pump is a mere 6 millimeters and 6.5 centimeters long. Image ©Procyrion

The cardiac pump is a mere 6 millimeters and 6.5 centimeters long. Image ©Procyrion

Procyrion has been working with maxon for almost two years to develop a motor for this unique and demanding application. The basis for the Aortix device is a maxon EC6 motor with some customization including the electrical lead, shaft length, and bearing assemblies – all designed to make the pump durable and biocompatible. maxon also designed a high efficiency motor core for this application, which extends battery life and produces less heat so it doesn’t adversely affect the circulating blood. In addition, maxon is working closely with Procyrion to implement a magnetic torque drive, so the motor could be mounted inside a hermetically sealed chamber. This configuration eliminates the possibility of blood entering the motor core. The magnetically coupled pump arrangement is a method sometimes used for giant pumps in the oil field, but because of maxon’s breadth of experience across multiple industries, the company was able to help the Procyrion team successfully transfer this technology to a miniature scale medical application.

Each Aortix device consists of a small, continuous flow pump mounted within a self-expanding anchoring system. The anchored pump attaches to a flexible power lead, which can be tunneled to a desired transdermal exit site or to a Transcutaneous Energy Transfer (TET) system for subcutaneous implantation without an indwelling power lead.

Presently, the device can operate for over eight hours on a single battery pack. The external battery pack and control unit have been designed to be “hot swappable”, meaning the battery can be changed without needing to stop the device. A variety of charging devices can be used.

“Aortix reduces the heart’s energy consumption by 39 percent.”

The Procyrion team has also built a TET charging system that enables the battery to be charged wirelessly. This design has the potential to significantly reduce the risk of infection, common with other implantable heart pumps.

Because traditional assist devices replace heart function rather than support it, device failure can be fatal. With Aortix, a partial support device which doesn’t obstruct native blood flow, failure is not life threatening. Should the pump fail, the device can easily be retrieved and replaced in another minimally invasive, catheter-based procedure.

They gliding over water – on solar power

Image © TU Delft

Image © TU Delft

At the world’s biggest solar boat regatta in the Netherlands, everything revolves around sustainable high technology. This year, maxon motor benelux supported two of the leading teams and has thus become part of a completely new technology in the boating industry.

The Netherlands is developing into a hub for solar boat technology. This summer, the world championship for solar boats was hosted there for the fifth time. The DONG Energy Solar Challenge takes place every two years. Starting out as a local initiative, it has developed into a global competition. In 2014, 40 teams from around the world faced the 240 km challenge. The companies and universities that participate are specialists in innovation and sustainability. All are battling from June 28 to July 5 for the first place in several races.

maxon motor benelux supported two of the leading teams in the top class: the CLAFIS Private Energy Solar Boat Team with the boat Furia III and the TU Delft Solar Boat Team of the Delft University of Technology. Both teams have won the race in the past. The CLAFIS team was victorious in 2010. TU Delft won the first race in 2006 and repeated this feat two years later. This year, the TU Delft team built a spectacular boat with a completely new approach that makes use of hydrofoils.

Principles from aircraft engineering
For the TU Delft boat, maxon motor helped to engineer the front hydrofoil. This technology makes use of principles that are common in aircraft engineering. By means of a height sensor combined with a maxon RE 25 spindle drive, the lightweight boat is kept at the optimal elevation above the water as it speeds along. The part of the boat that is underwater is so small that its drag is roughly equal to that of a human hand.

Team spokesman Lenny Bakker does not really know where to start when he is asked about the biggest challenge during the development of the boat: “Our goal was to develop, build and test a boat that had the potential to win and was as easy to handle as a bicycle – with a team of 29 students from different disciplines, all within just a year.”

A setback and an award
The race was indeed a challenge. On the first day, all hydrofoil boats had problems, as they got caught in the seaweed. After that, all went well for the TU Delft team – up until the last day, when a gust of wind capsized the boat just 1000 m from the finishing line. The skipper was rescued quickly. However, the water damaged some of the electrical systems and it was no longer possible to monitor the battery power. Unfortunately just at this time the battery was almost empty. These complications caused the team to lose second place; instead, they came in fourth. Yet TU Delft’s new concept with the special hydrofoils won the Design Award. “It’s a radical new and unique concept with innovative technologies and an elegant design,” praised Douwe Huitema, chair of the jury for the Design Award.

The CLAFIS Private Energy Solar Boat Team, on the other hand, had a very successful race: Their boat won by a long stretch, winning them the World Champion 2014 title.

“It’s a radical new and unique concept with innovative technologies and an elegant design.”
Douwe Huitema, member of the Design Award jury

Work whets the appetite for adventure
Gerwin Geukes, managing director of maxon motor benelux, has a positive view of the experience: “Participating in these high-end projects gives us the opportunity to take a look at new technologies and to learn what’s going on in the minds of the next generation of engineers. Things that are commonplace for our engineers might be new for the students, and vice versa. Apart from that, the fun is of course important too. Solving technical challenges in a team and taking part in events like these not only helps us discover our inner inventor, but also our inner adventurer.”

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