With the development of technology, computers are being increasingly widely applied to various practical work and life situations. The motor industry is one of the major industries in today’s society, and integrating computer and information technology into its development is in line with the requirements of the times and is a product of this development. Relatively speaking, the prospects for the motor industry are quite promising. Therefore, China has increased its investment in the motor industry in terms of material and financial resources. Furthermore, in the process of developing the motor industry, it is essential to maintain advanced equipment, effective management systems, and a high level of technical expertise among personnel. It is also necessary to analyze the current state of motor manufacturing processes and the development trends of the motor industry, and to solve the problems existing in the motor manufacturing process, addressing the key issues currently facing the industry.
Firstly, based on the specific methods used in manufacturing the iron core through core punching, layered iron cores can be divided into layered and pressed types. Enterprises typically use a layered approach. Depending on the type of iron core and its fixing and connection methods, they can also be categorized as core die casting, riveting, welding, and casting with aluminum molds. Small and medium-sized enterprises primarily employ production processes such as mass production, stamping, sorting, weighing, and cumulative fixing. The manufacturing of high-performance composite iron core plates often requires fully automated material punching and iron core stacking processes; large and medium-sized manufacturers typically produce stator cores through lamination, automated arc welding, and automated laser welding, avoiding additional capital investment.
Secondly, integral electrical metallurgical iron cores are manufactured by welding all the materials used in various integral magnets. This method is commonly used to weld all the materials used in the production of various electrical metallurgical iron cores, such as pure iron, iron-nickel, other aluminum alloys, and plates, eliminating the need for manual stamping, pressing, or folding processes. While this process produces high precision in terms of dimensions and overall shape design, it also results in significant material loss during the core production process, making it unsuitable for medium-batch and large-scale production of electrical iron cores.
1.2 Winding Manufacturing Process
The manufacturing process of concentrated windings for micro motors varies depending on the type. Common types include: hollow cup-type concentrated slot windings, embedded wireless hollow concentrated slot windings, hollow cup-type concentrated windings, and slotless concentrated windings. Because these types of windings differ in their component structure, the manufacturing processes also vary. Currently, in small-batch industrial production in China, the commonly used mechanical winding manufacturing process mainly involves manually producing the upper and lower conductors. However, in large-scale industrial production in my country, the commonly used mechanical winding manufacturing process mostly utilizes specialized industrial machinery with a high degree of integration of industrial mechanization and automation technologies, with the winding components directly driving the mechanical production control.
Firstly, for small-batch, multi-process welding production, embedded continuous-wound welding windings are commonly used. The production process and inspection mainly involve: raw material preparation, coil welding and winding, embedded connection, wiring and component welding, shaping, insulation and heat treatment, and product quality inspection. The most common methods are brazing and automatic spot welding.
Secondly, the shaping and manufacturing of slotless stator windings. According to the winding manufacturing working method, it can be further subdivided into winding inlay type stator windings, winding control type stator windings, winding type stator windings and hollow metal rotatable cup type stator windings. When shaping and manufacturing inlay type stator windings or hollow slotless stator windings, hollow inlay type stator windings and hollow stator slotless windings are usually carried out in a specially designed hollow inlay type stator winding shaping and manufacturing mode [2] .
Finally, there is the shaping and manufacturing of the hollow, slotless winding. When designing and producing various hollow cup-shaped windings, a dedicated cup-shaped winding machine is typically used to directly form a hollow cup-shaped rotor. The entire hollow cup body is then fixed onto the rotor frame, and its internal structure is secured. Finally, various methods such as cup body bonding and welding, potting, or adhesive molding are used to bond and encapsulate the entire hollow cup body. When using adhesive potting or plastic molding for cup body encapsulation, special mold materials must first be used for bonding and shaping, and the dimensional accuracy of the cup body must be controlled. This ensures that the encapsulated winding has a smooth and uniform hollow cup shape and rotor cup wall after processing.
1.3 Structural Manufacturing Process
In industrial production of components such as stamped shafts, housings, end covers, brush holders, stators, and rotors, due to the large number of parts required and the high precision of the machining process, stamping, plastic part stamping, and casting are generally not used. This not only improves production efficiency and meets the market demand for mass production but also satisfies the need for raw material storage. This processing technology is widely used in special industrial equipment, primarily represented by CNC machine tools for industrial data processing, process control centers, hydraulic converters, and hydraulic rectifier parts, significantly improving equipment production efficiency and product quality while reducing production costs. In the industrial manufacturing of complex parts such as motor housings and end covers, the housing is used as a substitute for traditional manufacturing methods. Therefore, the difference in processing technology and cost is significant, seriously affecting not only the overall subsequent raw material production and processing technology of the entire enterprise but also directly impacting the efficiency of subsequent production cost management and the enterprise’s production and operating costs.
The main manufacturing processes for electric motors currently include:
First, a roller welding kit is used, which is made by pumping and welding plates.
Second, the rivets on the steel plate are made by welding steel plate rivets.
Third, the outer shell is made of cast iron, steel, or forged aluminum.
Fourth, new extrusion material technology is used to extrude integral profiles or
form hollow shells.
Fifth, the stator core is used to insert into the plastic structure, and the stator shell is formed by a plastic mold.
Sixth, use seamless steel pipes or other tubular transistors to select standard transistors. When the number of hours is reached, special transistors can be directly manufactured within the required pipe size.
Seventh, during material stretching, a stamping process is used to stretch the material and fill the voids in the outer shell or shell. Different types and processes should be used in this process; generally, they are used for small-scale production.
Eighth, select methods suitable for both single-item and small-batch production. Under normal conditions, methods such as steel rolling and welding, steel rolling and riveting, and pipe forming are commonly used for removing straight pipe shells. Methods for manufacturing hollow bottom shells are often used to pull out the hollow core; the remaining process can be applied to cylinders and lower shells. This method is more suitable for small-scale production, reducing production costs through simple processes and casting extrusion.
2.2 Heat Treatment
Various integral heat treatment manufacturing processes for metallic materials mainly involve heating, holding, and cooling the obtained metallic material to alter its overall surface and internal structure, thereby improving its magnetic field adaptability and motion performance. In the field of general-purpose power motor transmission machinery processing and manufacturing, to efficiently improve the transmission stability, machining motion stability, and overall dimensional stability of transmission machinery components such as motor transmission gear shafts and housings, it is necessary to perform magnetic heat treatment on their outer shells. Similarly, for magnetically permeable metallic materials, such as permanent magnet pulse buffer plates, permanent magnet DC tubes, and other general-purpose motor transmission housings, conductive tubes, and electromagnetic rings, it is essential to perform necessary magnetic heat treatment on their outer shells to efficiently improve their magnetic field adaptability and motion performance. In the oxidation annealing, extinguishing, and oxidative heat treatment of industrial products using magnetic materials such as silicon steel sheets with high performance and quality requirements, such as the oxidation annealing heat treatment of materials such as high-manganese ferric sulfate and high-fluorine chromate high-nickel alloy used in the magnetic material motors of automated magnetic corner straighteners, this technology is widely applied in various annealing and heat treatment processes and equipment for products containing oxidants-free materials, such as the thermal oxidation annealing of household air furnaces and vacuum furnaces, and the thermal oxidation annealing of hydrogen-filled thermal oxidation furnaces and protective furnaces, thus avoiding the thermal oxidation of magnetic materials.
Therefore, one of the development directions that enterprises need to strive for is to closely integrate advanced production processes with modern enterprise organization and production management methods, so as to improve the efficiency of enterprise production management and reduce the production costs of traditional processes.
3.2 Promote the application of intelligent numerical control technology and precision machining manufacturing technology in the general micro-motor equipment manufacturing industry.
Currently, the market’s technical requirements for the design and manufacturing processes, design precision, and product production reliability of various specialized small micro-motors are constantly increasing. The manufacturing industry is also continuously advancing with the continuous development of modern science and information technology. In order to fully guarantee the reliability of the technical performance and quality of our company’s manufactured products, and to simultaneously meet the various technical requirements of the current international market, it is necessary to utilize various modern and automated advanced enterprise internal production and management models in the research, development, design, and production of various specialized small micro-motors. This must be combined with technologies such as CNC technology, various new specialized manufacturing machinery and equipment used in the manufacture of industrial precision machinery, and the manufacturing of industrial specialized small micro-motors. This is also a major inevitable trend driving the rapid and healthy development of my country’s specialized micro-motor product design, manufacturing, and equipment R&D industry.
3.3 Fully meet the actual needs of the chemical market and improve the overall economic benefits of chemical enterprises.
As industry researchers continue to develop and promote the application of new process principles and structures in the manufacturing materials industry for new micro-motor parts, traditional motor manufacturing materials processes can no longer fully meet the latest demands of the modern manufacturing market.
Therefore, the manufacturing processes and materials for micro-motor components, as well as the manufacturing technology for motors, have faced new market challenges. To effectively address these technical issues, it is essential to promptly implement the following technical actions:
First, it is necessary to conduct in-depth research on the new design and manufacturing basic materials, new design and manufacturing production processes, and new design and manufacturing machinery and equipment, to understand the basic technical performance and functions of the related motor products and the manufacturing processes of practical motor equipment, so as to effectively meet the latest technical requirements of the current modern industrial market for motor manufacturing equipment enterprises.
Secondly, as research on the basic materials technology of new industrial motors and the application cost technology of new industrial motors continues to develop and deepen, the raw material production process and equipment for manufacturing new practical motor equipment need to be mass-produced and launched. Therefore, it is necessary to conduct in-depth research on the basic technical issues of practical industrialization of motor products, the realization of efficient and low-cost application technology, and the basic technical issues of industrialized motor equipment manufacturing.
Post time: Apr-13-2026