With the continuous progress of science and technology and the rapid development of industrial production, the iron core stamping technology of electric motors has become one of the most advanced and efficient processing methods in the mechanical manufacturing industry. Its application scope is very wide, and it can not only process metal materials but also non-metal materials. In modern manufacturing such as automobiles, tractors, agricultural machinery, motors, electrical appliances, instrumentation, chemicals, toys and daily necessities, all occupy a very important position.

In actual production, it is not economical or even difficult to meet the requirements to use a single decentralized process for stamping when the production volume of the iron core stamping parts of the motor is large, the size is small, and the tolerance requirements are small. At this time, a centralized scheme is used in the process, that is, two or more single processes are concentrated in a single die, which is called a different combination method, and it can be divided into compound, step, and compound.-Three combinations. Composite stamping-A combination of two or more different single processes performed simultaneously at the same working position of the die during a working trip of the press. Step-in-press-A combination of two or more different single processes in a certain order on different work positions of the same mold during a work trip on a pressure machine. Composite-step-a combination of composite and step-step processes on a die.
Motor core stamping is a pressure processing method that uses molds installed on stamping equipment(mainly presses) to exert pressure on materials to separate or plastic deformation to obtain required parts(commonly known as stamping or stamping parts). The iron core stamping of the motor is usually a cold deformation process of the material at room temperature, and the main use of the sheet material to process the required parts, so it is also called cold stamping or sheet stamping. Motor core stamping is one of the main methods of material pressure processing or plastic processing, belonging to the material forming engineering.
In actual production, it is not economical or even difficult to meet the requirements to use a single decentralized process for stamping when the production volume of the iron core stamping parts of the motor is large, the size is small, and the tolerance requirements are small. At this time, a centralized scheme is used in the process, that is, two or more single processes are concentrated in a single die, which is called a different combination method, and it can be divided into compound, step, and compound.-Three combinations. Composite stamping-A combination of two or more different single processes performed simultaneously at the same working position of the die during a working trip of the press. Step-in-press-A combination of two or more different single processes in a certain order on different work positions of the same mold during a work trip on a pressure machine. Composite-step-a combination of composite and step-step processes on a die.
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