Exclusive Launch! Ultra-Light, High Torque, Super Smooth Backdrive: The Most Suitable AKE Collinear Drive Motor for Lightweight Exoskeletons is Now Available Today
重磅首发！极致轻量、高扭矩、超丝滑反驱：最适合轻量外骨骼的 AKE 准直驱电机今日上线！
CubeMars officially launched the AKE40-6 and AKE50-8 two new lightweight collinear drive joint modules at this year's China Industrial Fair. Through small gear ratio design, shellless and drive-integrated solutions, as well as ultra-low backdrive resistance, it solved the core issues of exoskeleton power systems in terms of lightweight, smoothness, and spatial constraints, providing more human-centric solutions for medical rehabilitation, outdoor sports, and consumer-grade assistive walking devices.
CubeMars AKE series collinear drive joint modules solved the core issues of exoskeleton power systems in terms of lightweight, smoothness, and spatial constraints through small gear ratio design, shellless and drive-integrated solutions, as well as ultra-low backdrive resistance, providing more human-centric solutions for medical rehabilitation, outdoor sports, and consumer-grade assistive walking devices.
Source: RoboSpeak — WeChat · Read original article ↗
Article text · Machine translation into English
“
Say goodbye to bulkiness, exoskeleton power gets a new solution
。
In the current rapid development of the robot and embodied intelligence industry, besides the humanoid robots in the spotlight, another billion-dollar track is also experiencing explosive implementation ——
exoskeletons and smart wearable devices
, which are now blooming across fields such as medical rehabilitation, mountaineering, special load-bearing, and elderly care assistance.
However, the core bottleneck that has long restricted exoskeletons from "moving from the lab into everyday life" still lies in the joint power source.
"Wearing it feels like being dragged by an iron frame"
—— the high level of reverse drag resistance caused by excessive gear ratio remains, and the wearer has to fight against the motor violently whenever they make a slight active effort; traditional joint motors are too thick and their shells are rigid,
making the whole machine bulky and protruding, with a huge self-weight, greatly reducing the wearing experience; while the integrated module seems convenient, it locks the installation structure firmly, which in turn limits the design space of the exoskeleton machine as a whole.
What kind of power joint does an exoskeleton really need?
At this year's China International Industry Fair (CIIF), the robot power brand
CubeMars Kude Intelligence
has provided a perfect solution ——
the AKE series quasi-direct drive joint module, specifically designed for exoskeletons and wearable devices, and has globally launched two ultra-compact new members: AKE40-6 and AKE50-8 at the exhibition site.
01.
Small gear ratio + integrated reducer: compressing lightness and high torque into the palm
In exoskeleton applications, the axial size of the motor directly determines the degree of equipment fitting the naturalness of the human skeleton and aesthetics.
The traditional "servo motor + large reducer" serial structure is often thick and clumsy,
while the CubeMars AKE series adopts an innovative quasi-direct drive (QDD) architecture design.
First, the precise reducer mechanism is directly embedded in the geometric center of the motor,
breaking the traditional structure's longitudinal stacking, significantly reducing the axial size, making the entire module present an ultra-flat flywheel shape. More importantly, the small gear ratio does not sacrifice power
—— relying on CubeMars' long-term accumulation in the optimization of the stator and rotor magnetic circuit and high slot fill rate, the AKE series demonstrates amazing torque density, capable of instantly generating thrust in high-frequency swinging scenarios such as walking assistance and mountain climbing assistance, easily providing sufficient power compensation.
02.
"No shell, no drive" design philosophy: returning the integrated freedom completely to the customer
In the current trend where many manufacturers pursue high integration, the AKE series takes the opposite approach, choosing a somewhat engineering-sighted subtraction:
removing the shell, removing the integrated drive board.
Why do such a subtraction?
Exoskeletons are essentially the "second layer of bones" tightly attached to the human body, with each brand's binding system, carbon fiber frame, protection sealing level, and aesthetic design being vastly different.
AKE removes the heavy universal shell, allowing the whole machine manufacturer to follow their product's biomimetic curve, designing the lightest, most distinctive, and most efficient custom outer frame
. Removing the drive board is also for space and weight distribution considerations: if each joint has its own drive board, it will not only occupy the limited lateral space of the joint, but also place the weight on the end of the limb;
by concentrating the electronics in the core control area such as the waist or back, the wiring is more compact, the whole machine weight distribution is more balanced, and the wearing fatigue is reduced to the minimum.
03.
Ultimate smooth reverse drive: letting the algorithm truly become a seamless human-machine fusion
Exoskeletons not only need to be able to "apply force", but also need to "comply".
The core technical barrier of exoskeletons is the "smoothness of human-machine interaction" —— when the wearer steps, changes direction, or even loses power, the joint must be able to be driven in the opposite direction with extremely low resistance. If the reverse drive resistance is high, every step the user takes feels like wading through mud, making the wearing not only not effortless, but also increasing the consumption.
The AKE series quasi-direct drive module is inherently equipped with ultra-low reverse drive torque.
On one hand,
the small gear ratio structure leads to extremely low transmission loss and high mechanical transparency,
the mechanical internal resistance of the motor is negligible; on the other hand,
the seamless resonance between algorithm and hardware,
when the engineer's intention recognition and smooth control algorithm issue instructions, the AKE can achieve millisecond-level response, moving with the user's movement and stopping when the user stops. The user feels no stiffness or resistance from the mechanical transmission, as if a bundle of natural human tendons has grown on the skeleton.
04.
CIIF major release: AKE40-6 and AKE50-8 make a stunning debut, full matrix launch
Previously, CubeMars has successfully mass-produced
AKE60-8、AKE80-8、AKE90-8
three large and medium-sized specifications, widely applied in heavy-load exoskeletons, quadruped robots, and industrial handling equipment.
And at this year's CIIF site, in order to fully penetrate the lightweight consumer-grade assistance, lightweight outdoor mountaineering, and medical-grade lightweight rehabilitation markets,
CubeMars officially released two new specifications: AKE40-6 and AKE50-8.
What are the strengths of these two new products? Let's look at several highlights from the on-site testing.
AKE40-6: the "lightweight sprite" that breaks the self-weight limit
The whole machine weighs only 140g
, with an outer diameter of about 51mm and a thickness as thin as 24.5mm; gear ratio 6:1, rated voltage 24V, rated torque 1.8 N·m,
Peak burst torque reaches up to 5.5 N·m
. Most notably, its reverse drive resistance is as low as
0.05 N·m
, allowing the rotor to smoothly idle with just a light touch of the finger.
In terms of application scenarios, it mainly targets three directions:
First, daily lightweight gait guidance and foot drop correction
, for example, foot drop assist orthoses, anti-trip ankle dorsiflexion assistors, and high-sensitivity lightweight gait adaptive correction devices;
Second, upper limb end-effectors and lightweight rehabilitation exoskeletons
, such as the power source for dexterous flexion and extension of the wrist joint, finger grasp exoskeletons, and lightweight upper arm synergistic muscle force compensation devices;
Third, ultra-light and thin consumer-grade assistive walking orthoses
, with its self-weight of 140g and ultra-low reverse drive resistance of 0.05 N·m, it can seamlessly integrate into daily pants or knee braces, achieving a sensation-free, zero-drag assistive support.
AKE50-8: The 'Powerful Little Steel Cannon' in the Golden Size
With a self-weight of only 190g
, an outer diameter of approximately 61.2mm, and a thickness of only 22.5mm; gear ratio of 8:1, rated torque of 2.5 N·m,
peak burst torque jumps up to 7.5 N·m
; reverse drive torque is only
0.09 N·m
, with backlash of only 9 arcmin.
Application scenarios: in
knee joint micro-assist and walking assistance
, it can be used for daily lightweight assistance, elderly step assistance, and knee joint load relief devices; in
industrial and rehabilitation upper limb exoskeletons
, it can be used for shoulder lifting on production lines, tool carrying, and elbow joint muscle force compensation devices; and in
lightweight flexible gait guidance and rehabilitation orthoses
, with its ultra-low reverse drive resistance, it achieves a zero-drag gait rehabilitation training experience.
From small to large, from the ultra-lightweight 140g to the large-torque flagship of 170 N·m, the CubeMars AKE series has established a highly competitive quasi-direct drive exoskeleton power matrix within the industry.
05.
On-site check-in: Come to the Industrial Fair, and personally experience the mechanical charm of quasi-direct drive
From 'human-machine confrontation' to 'human-machine integration', every iteration in the exoskeleton industry originates from the millimeter-level refinement of the underlying power joints.
During this year's China International Industrial Fair, CubeMars full series robot power modules, as well as two new flagship
AKE40-6、AKE50-8
prototypes have been on display. Welcome all exoskeleton R&D teams, robot engineers, and industry professionals to visit the booth on-site, personally turn the rotor, and feel the ultimate smoothness of reverse drive, as well as jointly explore deep customization solutions.
Exhibition name: China International Industrial Exhibition (CIIF)
Exhibition date: October 12th—October 16th
Booth location: National Exhibition and Convention Center (Shanghai) 7.1H-C070
Prototype application and technical exchange: Welcome to follow CubeMars official WeChat official account or leave a message in the backend to get the latest AKE series 3D drawings, technical specifications, and prototype application channels.
END
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Source：RoboSpeak — WeChat · mp.weixin.qq.com