As humanoid robotics advances from prototype development to industrial-scale deployment, demand for compact, high-efficiency, and fast-response coreless motors is surging. These motors play a critical role in robotic actuators, enabling precise motion control for dexterous fingers, robotic hands, and multi-axis joints. Behind every smooth and accurate movement is a high-performance coreless motor delivering the speed, precision, and responsiveness required by next-generation humanoid robots.

 

 

Coreless motors can be regarded as one of the key components that enable the dexterity and precision of humanoid robots.

 

As humanoid robotics moves toward large-scale commercialization, manufacturers face increasingly demanding requirements for joint actuators, including ultra-compact dimensions, rapid dynamic response, high efficiency, and cost competitiveness. These challenges are driving the need for scalable coreless motor production with greater efficiency, higher consistency, and lower manufacturing costs.

 

Among all production processes, coil winding remains one of the most critical factors affecting both motor performance and production economics. The precision and consistency of the winding process directly influence motor efficiency, reliability, and overall product quality.

 

As a result, choosing the right winding machine is no longer simply a manufacturing decision—it can be a key competitive advantage for companies seeking to establish a strong position in the fast-growing humanoid robotics market.

 

When coreless motor production enters the stage of high-volume manufacturing, a winding machine is no longer just a piece of equipment capable of producing coils. It becomes a highly automated production unit designed for maximum reliability, productivity, and minimal operator intervention.

 

Its primary mission is to continuously produce high-quality coils with exceptional consistency and yield at short cycle times, while seamlessly integrating with upstream and downstream manufacturing processes. Only through stable, efficient, and automated production can manufacturers meet the rapidly increasing demand for coreless motors in next-generation humanoid robots.

 

 

The evaluation focus of winding machines is shifting from “whether the precision is sufficient” to whether the system offers strong stability, high single-machine output, and low overall operating cost.

 

Accordingly, coreless motor winding machines must be equipped with the following six core capabilities:

 

1. Multi-station & high-speed operation:

High-volume production equipment typically adopts a multi-station design, enabling multiple coils to be wound simultaneously and significantly reducing cycle time. At the same time, the spindle must be capable of continuous high-speed rotation to achieve fast, stable winding even with ultra-fine wire diameters.

 

2. Fully automated loading, unloading, and line integration:

The system must integrate automatic loading (cores or tooling fixtures), automatic unloading, and automatic transfer functions.

 

3. Closed-loop tension control and real-time wire break detection:

Coreless motor coils typically use ultra-fine polyester-coated wire. During high-speed winding, even slight fluctuations in tension may cause wire breakage or insulation damage. A production-grade winding machine must therefore be equipped with an active closed-loop tension control system, which dynamically adjusts tension based on wire diameter, speed, and winding position to maintain stable tension.

 

At the same time, the equipment should feature high-sensitivity, real-time wire-break detection. Once a wire break occurs, the system must immediately stop and trigger an alarm, preventing continuous defective production and limiting losses to a single coil.

 

4. Extremely low failure rate and high yield:

A qualified mass-production winding machine must maintain a consistently high yield during long-term operation, which requires full validation of its mechanical structure, servo drive system, and control software. Mean time between failures (MTBF) is a key indicator of equipment reliability. High-quality winding machines, using precision ball screws, mature servo motors, and optimized vibration suppression design, can achieve long-term continuous operation without unplanned downtime.

 

5. Fast changeover capability:

The system should support rapid changeover by replacing winding fixtures, loading pre-stored process parameters, and switching wire materials, enabling quick transitions between different specifications. Advanced recipe management is also essential, allowing key parameters such as tension curves, winding paths, and rotation speed for different coil types to be stored in the system and recalled with a single click, significantly reducing manual setup time and human error.

 

6. Data traceability and intelligent monitoring:

Modern mass production lines require full traceability for every coil. The winding machine should be capable of recording key process data for each batch or even each individual coil, including tension, rotation speed, winding time, and alarm history. It should also support integration with Manufacturing Execution Systems (MES) for factory-level production data management.

 

For high-volume production, winding machines can be broadly classified into several categories based on coil size and output requirements (not limited to coreless motors):

 

Multi-station fully automatic needle winding machine:
This is the mainstream equipment type for large-scale production. It is widely used for most small- to medium-sized coreless motor coils. Featuring multi-station design, high-speed operation, and fully automated loading and unloading, it is the preferred solution for small and medium coreless motor production lines.

 

Ultra multi-station high-speed winding machine:
Designed for ultra-high-volume production (e.g., annual output of several million units or more), this type further increases the number of stations and operating speed, delivering extremely high single-machine capacity. However, the equipment investment cost is also significantly higher.

 

Flyer winding machine:
Primarily used for larger-diameter coreless coils, such as those in automotive motors and industrial drive motor applications.

 

When selecting equipment, the following key considerations should also be taken into account:

 

※ Define production capacity requirements clearly: Based on estimated annual output, determine the required number of stations and level of automation. Avoid blindly pursuing the highest specification; instead, ensure the equipment capability is properly matched with actual production demand.

 

※ Reserve integration interfaces: Even if only a winding machine is purchased at the initial stage, the equipment should be designed with compatibility for future downstream processes (such as hot pressing, welding, and testing), enabling seamless integration when building a fully automated production line later on.

 

 

※ Focus on after-sales service: For mass production equipment, the cost of unexpected downtime is extremely high. Therefore, a supplier’s response speed, spare parts supply capability, and on-site engineering support should be evaluated even more carefully than the equipment price itself.

 

The humanoid robotics industry is driving coreless motors from traditional precision components toward large-scale, low-cost, and high-consistency manufacturing at a consumer-electronics level. As a core process equipment, the winding machine has evolved from a “critical process machine” into the efficiency core of the entire production line.

 

At this critical stage of industrial development, it is especially important to choose an equipment supplier with a deep understanding of motor manufacturing processes. Starting from independent R&D of customized winding machines, HONEST Automation has grown through continuous technological breakthroughs into a global provider of intelligent motor manufacturing solutions. It has also been recognized as a National High-Tech Enterprise and a National Specialized and Sophisticated “Little Giant” Enterprise for five consecutive certifications.

 

Today, its product portfolio covers the full range from multi-station winding machines to complete intelligent motor production line solutions. Its customers include leading global enterprises such as BYD, Geely, DENSO, and Nidec.

 

If you are looking for a coreless motor winding machine, feel free to share your requirements with us for further discussion.