Laser cutting vs. stamping are currently common motor lamination processing methods. They have obvious differences in processing methods, processing accuracy, cost, etc. Which method to choose needs to be comprehensively considered based on actual needs and economic conditions to achieve the best processing effect.
Laser Cutting
The laser cutting process is a non-contact cutting method. The laser cutting machine utilizes a highly focused laser beam to cut through motor rotor and stator laminations with precision and accuracy.
One of the key advantages of laser cutting laminations is their versatility. It is very attractive for situations where parts need to be manufactured in multiple materials or different material thicknesses.
The laser cutting has high accuracy, with minimal material distortion, allowing for intricate and complex shapes. Which is very cost-effective for lamination prototype fabrication and small batch production. In addition, laser cutting does not require mold design, and it takes only a few days from design to production.
Disadvantages include a slower rate of production per piece as well as laser cutting dross which requires an additional process to remove excess material.
Stamping
Stamping involves the use of dies and presses. This method is highly efficient and cost-effective, particularly for high-volume production. The stamped motor laminates have the smallest tolerances, and the process produces the product faster than laser cutting, reducing the cost per piece.
But for lamination prototype or small batch production, stamping is not the best choice, because it needs to die design and fabricated in the early stage, usually The time of making the mold is 3-6 weeks, and the mold is not change once formed, if you want to deal with different thickness or type of materials, you need to redesign the mold.
It is a preferred method when producing a large quantity of parts with the same specifications. Stamping product electric motor core applied in automotive, industrial area, aerospace, wind/fire power generator, etc.
Differences Between Laser Cutting Vs. Stamping Motor Laminations
Processing Methods
Stamping is the extrusion of metal through a mold, while laser cutting is the cutting of metal through high-energy laser beams.
Precision and Tolerance
Laser cutting has higher processing accuracy than stamping and can cut complex shapes, while stamping is suitable for processing regular shapes.
Tooling
Laser cutting requires minimal tooling and setup compared to stamping, which involves creating custom dies and configuring presses.
Cost Considerations
Laser cutting is cost-effective for low-volume produce laminations stacks runs, while stamping becomes more cost-efficient for large production volumes.
Lead Time
Laser cutting generally has shorter lead times(3-5 week) due to reduced tooling and setup requirements. Stamping may have longer lead times(5-18 week) initially but becomes more efficient for large-scale production.
A wide range of electric motor solutions manufacturers in China
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Conclusion
Both processing methods have their own advantages and disadvantages. Before manufacturing a product, it needs to be analyzed and selected based on the specific situation. If mass production, simple shape, and price-sensitive products are required, stamping technology is a better choice. If high precision, multi-material processing and parts of different shapes are required, laser cutting is the preferred choice.
FAQS
What are the stmping methods?
Compound stamping, also known as compound die stamping, involves a single die with multiple stations or operations within it, allowing for the creation of stator rotor lamination in a single stroke.
Progressive stamping is a highly efficient and continuous process used to produce large quantities of parts with repetitive shapes. It utilizes a series of stations or dies, each performing a specific operation as the electrical steel sheet strip progresses through the machine. It offers high-speed production, reduced material waste, and consistent part quality.
Rotary notching, also known as rotary punching or notching, is a method used to create notches or perforations in silicon steel sheets. It involves a rotary tool or die that rotates and cuts the desired notches into the metal. This method is advantageous for its speed and accuracy in creating repetitive notches or patterns.
In addition to laser cutting, what other processes are used for prototyping motor lamination?
Wire Electrical Discharge Machining, commonly known as Wire EDM or simply EDM, is another precise and versatile process employed in prototyping motor laminations. In this method, an electrically charged wire is used to precisely cut through the material, typically metal, by creating a spark discharge that erodes the material in the desired shape.
What Are The Types Of Industrial Dies?
Stamping dies are workhorses, cutting, shaping, or forming metal sheets.
Extrusion dies are vital in creating continuous shapes from metal or plastic.
Progressive dies efficiently handle high-volume production with multiple operations in one pass.
Transfer dies allow part transfer for multi-step operations, while roll-forming dies craft consistent, long profiles.
Compound dies are versatile, and ideal for intricate parts with multiple actions. These dies, tailored to metal stamping, enable precise production across diverse industries.
The process of industrial die service and maintenance is a vital aspect of ensuring the longevity, quality, and efficiency of manufacturing operations.
