features of the motor stamping die

Do You Know The Four Structural Features Of the Motor Stator And Rotor Iron Core Stamping Die?

Do you know the four structural features of motor iron core stamping die?  The motor iron core stamping die plays a pivotal role, in influencing the efficiency and performance of electric motors.

In this blog, we explore the four key structural features that define its performance and durability. From the innovative double guide structure to the strategic use of more block structures and combined structures, and the incorporation of special and fixed structures.

What Is Motor Iron Core Stamping Die?

The motor stator rotor core stamping die technology is a high-tech integration of equipment, die, material, and technology.

Serving as a fundamental component in the production of laminated iron cores, this die is designed with precision to shape and form the core layers with accuracy and consistency.

The stamping die crafts laminated iron cores for stators and rotors. These cores are integral to electric motor function. They create a path for magnetic flux, contributing significantly to motor efficiency

Essentially, the mold allows manufacturers to produce laminated cores that meet stringent specifications for size, shape, and material.

This process is crucial for achieving the desired performance characteristics in electric motors, ensuring optimal efficiency and reliability.

motor iron core stamping die

Stator And Rotor Punching Toolings Type

Progressive Die

Progressive punching dies are a common type used in motor iron core production.  The high-speed precision punching machine has an advanced design structure and high manufacturing precision. It is suitable for high-speed stamping stator and rotor iron core parts of the motor adopt multi-station progressive die. This enhances die service life significantly.

The progressive die facilitates a streamlined stamping process: as the strip emerges from the coil, it undergoes leveling by a leveling machine and is then fed by an active feeding device.

Once inside the mold, the strip undergoes a sequence of operations, including blanking, forming, finishing, trimming, and active lamination of the iron core.

This method allows for efficient and continuous processing, increasing overall productivity. Known for speed and cost-effectiveness, progressive stamping dies are preferred in high-volume manufacturing.

Compound Toolings

Compound stamping dies perform multiple operations simultaneously within a single stroke. This type of die is particularly useful for intricate motor iron core designs that require multiple processes.

Integration of operations in one die enhances efficiency and reduces tooling needs. Ideal for complex medium and large-sized motor cores.

motor iron core compound stamping die

Notching Die

Rotary notching dies specialize in creating notches in laminated iron cores, a crucial aspect in reducing core losses and improving motor efficiency. This type of die utilizes a rotary motion to make notches in the core material.

The notching dies to optimize magnetic flux pathways and minimize energy losses, enhancing electric motor performance with precision and speed.

Other Related Molds

In addition to stamping dies, die casting molds are another essential type in motor manufacturing. These molds are employed in the process of die casting, where molten metal is injected into the mold cavity to create intricate shapes. Die casting is commonly used for producing complex motor components with high dimensional accuracy and surface finish.

Four Structural Features of Motor Iron Core Stamping Die

The main structural features of the stamping die for the stator and rotor core of the motor are:

1. Double Guide Structure:

At the core of motor iron core stamping die design is the implementation of a double guide structure. Both the upper and lower die bases are meticulously guided by more than four large spherical guide pillars. This deliberate choice ensures enhanced stability and precision during the stamping process.

Each discharge device and the upper and lower die bases are guided by four small guide posts to minimize the risk of misalignment, promoting reliable guiding accuracy throughout the entire mold. This structural feature is instrumental in maintaining the integrity and dimensional accuracy of the stamped components.

2. More Block Structures and Combined Structures:

For enhanced convenient manufacturing, testing, maintenance, and assembly, the motor iron core stamping dies embrace more block structures and combined structures.

These design choices ensure a technical approach that simplifies processes and promotes efficient production.

The adoption of more block and combined structures underscores a commitment to practicality, allowing for streamlined operations and facilitating ease of use throughout the lifecycle of the stamping die.

3. Special Structure:

The incorporation of a special structure in motor iron core stamping dies showcases the adaptability of these tools to diverse manufacturing requirements. Special structures can include innovative features tailored to specific stamping needs.

These may involve custom-designed components, advanced cooling systems, or unique arrangements to address intricate geometric requirements.

The flexibility offered by special structures allows manufacturers to tailor the die to the nuances of their production processes, fostering efficiency and versatility.

transformer core stamping die

4. Fixed Structure:

The motor stator and rotor punch embrace a fixed structure with a pressing plate, utilizing cemented carbide for durability and cost-effectiveness. The die, on the other hand, features an embedded structure, enhancing convenience for assembly and replacement.

This thoughtful design balances processing characteristics and material costs while ensuring efficient maintenance in motor manufacturing.

Industry Trends and Innovations

As motor varieties evolve and assembly processes undergo constant innovation, the demand for higher precision in motor iron cores is escalating. This trend has led to significant advancements in the die stamping technology for motor stators and rotor cores. Key industry trends and innovations include:

Innovative Die Structures:

The innovation of die structure should be the main melody of the development of modern punching die technology of motor stator and rotor core.

Ultra-High Precision:

Stamping die technology is advancing toward ultra-high precision, meeting the ever-increasing technical demands of motor iron core accuracy.

Large Slewing and Twisted Oblique Riveting:

Innovations in motor stator and rotor iron core technology are exploring large slewing and twisted oblique riveting technology, pushing the boundaries of design and functionality.

Layout Efficiency:

Stamping dies for motor stator and rotor cores are moving towards layouts with fewer overlapping edges, optimizing efficiency in the stamping process.

High-Speed Precision Punching:

With the continuous development of high-speed precision punching technology, the dies should be suitable for the needs of higher punching speed.

Lamnow Stamping Die Design And Manufacture Capabilities

stamping die design and manufacture

Our punching die design and manufacturing capabilities exemplify precision and innovation. With a team of skilled engineers and state-of-the-art technology, we specialize in crafting stamping dies that meet the highest industry standards. 

From intricate designs to large-scale production, our capabilities span diverse industries. We leverage cutting-edge software for meticulous design, ensuring optimal functionality.

Our manufacturing process combines craftsmanship with advanced techniques, delivering dies characterized by durability, precision, and efficiency.

Whether it’s progressive dies, compound dies, or specialized configurations, our capabilities reflect a commitment to excellence in providing tailor-made solutions for all stamping needs.


In conclusion, the exploration of the four structural features of motor iron core stamping die has unraveled the intricate craftsmanship behind electric motor manufacturing.

From the stability endowed by the double guide structure to the ingenuity of more block structures and combined structures, the special configurations, and the stability offered by fixed structures, each element plays a vital role in shaping the precision and efficiency of the stamping process.

As the secrets of these structural features are unveiled, it becomes evident that they collectively define the essence of excellence in motor iron core production, ensuring a seamless blend of innovation, durability, and precision in the ever-evolving world of electric motor technology.


Why is material selection important in motor core laminations stamping die design?

Material selection is crucial for durability and performance. Commonly, materials like cemented carbide are chosen for their hardness and wear resistance, ensuring a longer lifespan for the stamping die.

What are the application areas of motor lamination for stamping die forming?

Motor lamination stamping finds applications in electric motor manufacturing for various industries, including automotive, appliances, industrial machinery, and renewable energy.

The precision and efficiency of stamping die forming in creating laminated iron cores make it indispensable for producing high-performance electric motors in these diverse sectors.

What are the benefits of stamping die?

Stamping dies offer numerous benefits, including precise and repeatable part production, high-speed manufacturing capabilities, and cost-effectiveness for large production volumes. They ensure dimensional accuracy and consistency in complex shapes, contributing to product quality.

Additionally, stamping dies are versatile, accommodating various materials and part sizes. Their efficiency reduces material waste and labor costs, making them a preferred choice for industries requiring mass production of components with tight tolerances.

How often does an electric motor lamination stacks stamping die need maintenance?

The frequency of maintenance depends on factors like production volume and the materials being stamped. Regular inspections and maintenance are essential to ensure consistent performance and extend the lifespan of the stamping die.

Look for quality motor lamination

To learn more about our motor lamination manufacturing capabilities for your industry, contact our team today.