Archive | Medical applications RSS for this section

Custom DC motor for maximum power density

New brushed DC motor design from maxon motor.

maxon motor Australia have configured a combination of brushed DC motor, planetary gearhead and digital incremental encoder with completely customised features for a prominent medical manufacturer and have produced it in 11 working days.

An interactive 3D model of the entire assembled combination showing all modifications and final production part numbers can now be generated within an hour of specification request along with data sheets showing the working points of the application. The new process eliminates large amounts of traditional internal procedures, with the robotic production line and parts procurement all linked together with the new design tool. The new motor pictured below shows a unique stepped planetary gearhead that uses a 26mm diameter on the high speed input stage and a 32mm on the high torque output stage. Focusing the wear and strength attributes by placing components specific to their role also increases the motors power density. In order to allow for the full use of shaft length that is tailored for the application, a new process of laser welding the inner race of the output bearing directly to the shaft material has been used over the traditional methods of c-clips and shaft collars. This is also naturally stronger than glue and press fit methods. The motor is capable of producing over 10,000rpm and the gearhead up to 12Nm with ratios to 1526:1. Zero cogging and linear characteristics combined with new encoder resolutions up to a staggering 65,536cpt open new position control possibilities for automation, tool and robotics applications.

Contact maxon motor Australia for assistance. Ph: +61 2 9457 7477.

Maxon motor posts record revenues.

Throughout 2016 maxon invested significantly in expanding its facilities, bringing a large number of new technologies & innovations to market and expanded on their market leading position.

Sachseln/Switzerland – The maxon motor group further increased its revenues in 2016. Compared with the previous year, revenues grew by 5% to a new record level of CHF 422.5 million (from CHF 402.5 million in the previous year). The number of employees rose to 2,500 and for the first time in company history, maxon employs more people abroad than in Switzerland. The highest revenues were achieved in medical technology (43% market share), followed by industrial automation & robotics (26%) and aerospace industries (6.5%). Investment in R&D rose to CHF 28.5 million in 2016 (up from 27.1 million).

Maxon is increasingly becoming a specialist in mechatronics and systems, launching the first fully sterilisable drive system this year. Drive combination units consisting of brushless DC motor, gearhead and sensor are designed to withstand 1000 autoclave cycles. Maxon’s new DC motor controllers also stand up to extreme ambient conditions. The electronics are protected against contaminants and corrosion by a polymer coating. In addition, the device is highly resistant against vibrations and shocks.

For the e-bike market, maxon motor developed a new S-Peledec motor with a 500 Wh battery and intuitive operation for urban applications. The bike reaches speeds of up to 45 km/h and the device stands out because it can convert any regular bicycle into an e-bike. maxon is also active in the field of autonomous delivery robots. This is a market where the energy-efficient and lightweight drive systems by maxon are in particularly high demand.

For more information on DC motors and accessories please contact maxon motor Australia tel +61 2 9457 7477.

Discontinuation of maxon EC19 DC motor and GP19 planetary gearhead.

With the introduction of the ECX 19 SPEED brushless DC motors, maxon are phasing out the EC 19 and Planetary Gearhead GP 19.

The EC 19 and the GP 19 M were officially introduced in 2014. They will be replaced with brushless DC motors – the ECX SPEED 19 series. Final orders will be received up to December 22, 2017 with last delivery scheduled for March 30, 2018.

The alternative is the brushless ECX range of DC motors. Configurable online, these brushless DC motors are sterilisable, have ceramic bearings and are available with or without hall sensors. With an ironless winding these DC motors have an exceptionally large speed range, high power, excellent control characteristics and are highly durable. Choose from matching gearheads and with the option to configure the electrical connection.

For more information on an alternative DC motor or for application assistance, please call maxon motor Australia on tel. +61 2 9457 7477.

World First: robotic system for eye surgeries

Dutch company Preceyes developed a world first robotic system for retina disorders, using haptic feedback and maxon DC motors.

Detached retina surgery requires precision to an nth degree where the stability of human hands are no match compared to robotic systems. This is why Dutch company, Preceyes, developed a completely new robotic system for eye surgery. Especially designed for the treatment of retina disorders, the robotic device improves precision up to 20 times more than a Surgeons hand, making operations once deemed impossible due to lack of precision now being successfully performed.

Surgeons operate via a joystick while looking through a microscope. The joystick controls a robotic arm, controlled by maxon DC motors, assisting surgery in millimeter increments. A haptic feedback function allows the surgeon to see and feel their actions and the robotic system supports quick retooling. This is an important factor because it reduces operation time bringing a multitude of benefits to the patient.

For more information on DC motors and drive systems in robotic medical applications, please contact maxon motor Australia tel. +61 2 9457 7477.

Preceyes_450px.jpg

The new robotic system is used in surgery to treat disorders of the retina. © Preceyes

The first of the new breed ultra-small 6mm and 8mm DC servo motors arrive in Australia

Close inspection of the gear motor combination reveals the extent of motor customisations possible, normally for niche hand built servo motor and gearhead combinations that the Swiss engineers have become famous for.

Completely configured by the end user, maxon motors new micro DC motors system of online motor design and fully automated construction is set to change the future of motor manufacturing technology. Without human interference the tiniest of microdrives can be tailored to the application via an online tool. From the shaft length, diameter and flat features to the mounting method, gearhead reduction, winding characteristics, cable length and connector type. All direct from the motor design portal to the automated manufacturing line. Laser welded steel construction, dual stainless ball bearings and integral strain relief on a motor with only 6mm outer diameter beguiles Australian engineers. Over 17,000rpm at much lower noise levels than previously attained and torque levels to 200mNm make the new 6mm and 8mm servo gear motors incredibly power dense.

The ultra-small DC servo motors have linear control characteristics, zero magnetic detent (cogging) making them suitable for applications such as micro pumps, medical and laboratory dosing devices and robotics.

Contact maxon motor Australia for application, engieering or project assistance.
Ph: +61 2 9457 7477.

New DC motor and drive catalogue

maxon motor have released the digital edition of the new 2017 / 2018 catalogue. Answering the how to’s of motor control it contains valuable motor and motor control reference material.

Containing 480 pages of motor, gearhead and controller information and useful educational material including a technology breakdown, calculation examples and conversion tables the manual is available now for downloading or online reading. New technology listed includes the customisable stainless steel DC motors in 6mm and 8mm. Information on the new very high speed 13mm BLDC brushless DC motor technology that can be sterilised for medical applications. Ultra-small diameter planetary gearing and high speed gearbox designs and the very latest in motion control, explaining modular decentralised DC motor position controllers and high power density DC servo amplifiers.

The link directly to this free information is http://epaper.maxonmotor.com.au/ or contact our Sydney, Australia office on +61 2 9457 7477.

 

More choice from maxon: sterilisable brushless DC motors

Maxon now offer more sizes in their sterilisable range of brushless DC motors, gearheads and an all new encoder.

Now available in a 13mm diameter is the brushless DC motor (ECX SPEED range) with accompanying planetary gearheads (GPX 13 SPEED) and the first of its kind sterilisable Encoder (ENX 13 EASY INT). All fully configurable, sterilisable and optimised for high speeds and low vibration output, making them perfect for demanding speed and positioning control tasks in surgical applications.

A stand-out feature of the sterilisable encoder is the chip used for generating the commutation signals in the Hall sensor version. When coupled with the brushless DC motor ECX SPEED 13 it facilitates extremely precise commutation and reduces heat. The encoder can be integrated within the motor to optimise costs and assists in applications with tight space restrictions. The DC motor combination can be configured online and ready to ship in 11 working days.

For more information please contact maxon motor Australia tel. +61 2 9457 7477.

New! Maxon release the first sterilisable encoder.

maxon motor have unveiled the first sterilisable encoder for brushless DC motors. This will create many opportunities for advances in medical technology.

The first steam sterilisable encoder has been released by maxon motor. The ENX EASY is available in two versions, as an incremental (1024 CPT) and an absolute version (4096 CPT). It can be integrated into suitable motors without increasing the length. The encoder has allowed maxon to create the first sterilisable drive system with brushless DC motor, gearhead and integrated encoder.

Ideal for demanding medical / surgical applications where speed and positioning control tasks are performed. Available with ball bearings or in a ceramic version. The encoder delivers high speeds, extremely precise commutation, low vibration and reduction of heat build-up. To optimise costs and space restrictions, the encoder is integrated in the brushless DC motor.

For more information please contact maxon motor Australia tel. +61 2 9457 7477.

New! Brushed DC micro motors and gearheads in 6mm and 8mm diameters.

For applications requiring a DC micro motor that is robust, powerful and delivers high performance.

maxon have released two new brushed DC micro motors available in 6mm and 8mm diameter as part of their DCX range. The DC motors have a robust design with maximum power density from the high-performance neodymium magnets.

Also available are matching gearheads, the planetary gearhead 6mm and planetary gearhead 8mm, as well as two motor controllers, the ENX 6/8 OPT (optical) and ENX 6/8 MAG (magnetic). The matching planetary gearheads are welded directly to the motor and offer reduction ratios of up to 1000:1. Both are able to transmit short-term torques of 60 and 150 mNm respectively. The motor encoders are available in two versions for each diameter and work with voltages as low as 3V, therefore making them highly suitable for medical devices. The encoders come in a magnetic version and for magnetically sensitive applications, the optical encoder is available.

These micro motors are configurable online and available for dispatch in 11 working days from date order placed.

For more information please contact maxon motor Australia on tel. +61 2 9457 7477.

A first: complete sterilisable motor, gear and encoder drive system.

The first of its kind! Brushless DC motor (BLDC motor), Planetary Gearhead and a choice of incremental and Absolute encoder all assembled to order in sterilisable form.

This is the first time a sterilisable encoder has been offered and it opens up new possibilities for the medical automation, laboratory automation and dental fields. A full position controllable system that is sterilisable.

The new encoder will have the optional output formats of both incremental to 1024 counts per revolution or Absolute with a 4096cpt (12 Bit). In standard combination with high speed brushless motors in 13mm and 16mm diameter speeds of 120,000rpm are possible and power levels over 100W. The high input speed gearheads can be selected with the correct ratio so match the applications speed and torque requirements and are of a robust stainless steel laser welded construction. Medical hand tools and specialist tools for controlled environments will benefit from this new development.

For more information please contact maxon motor Australia tel. +61 2 9457 7477.

%d bloggers like this: