A kind of technological method of processing automobile stator or rotor with silicon steel sheet

Abstract

The present invention relates to a process method capable of processing stator(s) or rotor(s) of an automobile with silicon steel sheets. The method comprises the following steps: (1) performing inserting connection between silicon steel sheet units via special-shaped hole(s) and special-shaped shaft(s) and locking the silicon steel sheet units via pin(s), and forming the silicon steel sheets of 0.25-0.38 mm thickness after two punching processes; (2) placing the punched silicon steel sheets in a holding furnace to perform heating treatment, taking out the silicon steel sheets from the furnaceto perform natural cooling; (3) determining the height(s) of the stator(s) or the rotor(s) to be processed; (4) coating an adhesive on both sides of the silicon steel sheets, arranging the silicon steel sheets coated with the adhesive on fixing shaft(s), and placing the silicon steel sheets in mould(s) to fix, wherein the shape(s) of the silicon steel sheets are matched with the shape(s) of the mould(s); (5) mounting the mould(s) on a oil press machine, heating the silicon steel sheets and the adhesive to 50 DEG C with an electrical heating unit, applying pressure in two steps, and bonding the stator(s) or the rotor(s) into a whole 12 hours later; (6) winding copper wire(s) from the stator(s) or the rotor(s); and (7) winding the other two phases according the step (6). The stator(s) or the rotor(s) of the automobile manufactured by the process method has the advantages of high connection strength and electrostatic resistance, the stiffness of the motor rotor(s) is improved, and the mechanical performance of the motor rotor(s) is greatly improved.

Description

technical field [0001] The invention relates to the field of automobile motor parts, in particular to a process method for processing an automobile stator or rotor with a silicon steel sheet. Background technique [0002] At present, high-efficiency motors have become the mainstream of the development and application of small and medium-sized motors, especially industrialized countries such as Europe and the United States are very concerned about energy conservation and environmental protection. The traditional automobile stator or rotor is formed by stacking and pressing multiple anti-silicon steel sheets that are cut and formed in one piece. Since the silicon steel sheets are in a ring structure, a lot of material is wasted when the silicon steel sheets are cut and formed. In the existing design, there are also multiple fan-shaped silicon steel sheet units welded together. Although the problem of material waste is solved, it has internal stress, and the strength of welding...

AI Technical Summary

Problems solved by technology

The traditional automobile stator or rotor is formed by stacking and pressing multiple anti-silicon steel sheets that are cut and formed in one piece. Since the silicon steel sheet is a ring structure, a lot of material is wasted when the silicon steel sheet is cut and formed.

In the existing design, there are also multiple fan-shaped silicon steel sheet units welded together. Although the problem of material waste is solved, it has internal stress, and the strength of welding is not as high as that of integral molding; in addition, the existing silicon steel sheet cannot Effective anti-static, can not meet customer requirements

Therefore, in many designs, the outer surface of the silicon steel sheet is electrostatically coated, which virtually increases the complexity of the process.

At the same time, in the manufacture of rotors or stators, the winding method of the copper wires in the existing motor is the inner winding type. The copper wires in the motor stator made by this method are concentrated in the silicon steel sheet and the contact area with the air is small, so the motor stator The heat dissipation effect of the motor is not good, which will increase the axial length of the motor and greatly reduce the mechanical performance of the motor

In addition, the stator or rotor core is usually fixed by tooth pressure plate. In this fixing method, the pressure cannot be evenly transmitted to both ends of the laminations, resulting in different pressures at both ends of the core laminations. The stator core laminations at the lower end with looser pressure Electromagnetic force, vibration force, thermal stress, etc. will cause relative displacement to the center of the stator core in the radial direction, and even scratch the stator bar, resulting in grounding accidents

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