Brushless flat DC motor with hollow bore for air and light transmission.
Today we exhibit a new motor development featuring a Brushless DC (BLDC) flat motor. Flat motors are also commonly referred to as pancake motors. This unit has a body length of just 38mm and an output power of over 157W and 6000rpm at the shaft in the application. The average motor power rating for the series across 6 variants is 100W. The overall motor diameter is 68mm and it can be supplied with or without protective covers for IP rating. The motor is available with an internal encoder with resolutions up to 16,384qc per revolution making it suitable as a rotary stage of robotic joint actuator. The unique feature though is the motors hollow shaft. This is to enable customers to pass light or air through the bore of the motor. Air transmission is a common requirement for packaging and placement machinery and light or fibre is a common requirement for film and camera gimbal applications. This motor was also manufactured with the customers shaft length and bore specifications in combination with a custom rear shaft extension at the rear from the motor rotor.
Contact maxon motor Australia for motor specifications or assistance with a custom solution Tel. +61 2 9457 7477.
Maxon motor have supplied DC motor and gearhead combinations for NASA’s fifth Rover mission – the 2020 Mars Rover.
NASA’s Jet Propulsion Laboratory is building a Rover that will travel to Mars in 2020. The purpose of this operation is to collect dozens of soil samples, seal them and leave them on Mars for future pick-up. Nine brushless (flat) pancake DC motors and gearhead combinations from maxon’s standard range – that have been heavily customised to withstand the harsh conditions on Mars – are used in the sample handling arm, specifically developed for this mission.
The sample handling arm moves the containers from station to station within the sampling system. Additional DC motors are also in the Rover and assist with obtaining the samples and sealing the containers. Maxon’s brushless DC motors and gearheads need to survive the powerful entry, descent and landing sequence as well as the harsh daily conditions on Mars with sandstorms and temperatures ranging from -130 to +70ºC.
From the outside, the Mars 2020 rover looks similar to its precursor Curiosity, that is still operating on Mars. The 2020 mission will have several new instruments on board to deliver unique new data. A key objective will be to search Mars for bio-signatures. Another instrument on board will test whether it’s possible to generate oxygen from the atmosphere for possible future human visits. However, the most significant innovation is the ability to take rock samples in several locations and prepare them for return to Earth.
For assistance on customised DC motor technology for applications in harsh environments please contact maxon motor Australia tel. +61 2 9457 7477.
A Canadian company has developed a small robotic arm for industrial applications using brushless pancake motors, zero-backlash gearheads and encoders from maxon.
Introducing the Meca500: An Industrial Robotic Arm that is half the size of a regular industrial robot. Made by Mecademic in Canada and featuring brushless flat motors from maxon, the Arm has six degrees of freedom, weighs five kilos and spans a base around the size of your palm. With a repeatability of 0.005 millimeters, that is, 20 times less thicker than an A4 piece of paper, the Mecas500 has a load capacity of 500 grams.
Maxon’s brushless pancake motors were selected for this application. The EC45 flat brushless motors are renowned for their compact design, long lifespan, top quality and high torque. In the Meca500, the DC motors are combined with zero-backlash gearheads and high-resolution encoders for precise movements. The controller is integrated into the motor and gearhead combination, saving even more space and simplifying the drive operation.
If you would like application assistance or for more information please contact maxon motor Australia tel. +61 2 9457 7477.