Motor core production process

Core is one of the effective portion of the motor core manufacturing process a great impact on motor performance. Core manufacturing process, including manufacturing and core punching press fit into two parts. Punching the punching stamping process belongs Fan shoulder. This chapter first describes the general types of punch core problem and its application, stamping process sheet material, and then describes the core laminations manufacturing, core press-fit, creating core inspection and their impact on the quality of product quality and other issues. Due to the high permeability soft magnetic materials, hysteresis loss and ease of manufacture, therefore, generally soft magnetic core manufacturing materials. Variety of soft magnetic materials are ordinary carbon steel, silicon steel, electrical and magnetic iron alloys. In addition to DC motors and synchronous motors pole cores commonly used ordinary carbon steel plate, the motor core punching most commonly used material is silicon, also used in some motor or electric iron magnetic alloy (such as iron-nickel alloy, a wok station gold, etc.). The thinner the silicon, the core loss is smaller, but the mechanical strength decreases punching, core manufacturing hours increased. After stacking, punching due to the increased proportion of occupied insulation thickness, so that stacked core coefficient is reduced, resulting in effective length and cross-sectional area of the core is reduced. Therefore, the mechanism should not be used in moderate electricity through a thin electrical steel (sheet), the thickness of 0.5mm and usually 0.35mm. Features cold stamping process a simple operation. Mainly rely on punch and die work, the operator only simple feeding work on the operator's skill level required lower. 2, precision and reliability. The dimensional accuracy of the workpiece depends mainly on the mold, and the minimal relationship with the operator, so the size of the workpiece stability, good interchangeability. 3, high productivity. Punch work fast, and easy to implement stamping process mechanization and automation, high productivity. 4, high material utilization. Sets the workpiece can be cut, stamping parts only after cutting a small amount, even without cutting so that can be used directly. 5, mold manufacturing cycle principals, higher manufacturing costs.

  26, work big noise. Cold stamping belongs impact work, once for each punch, make a noise issue. Punching workshop is one of the hardest hit noise nuisance. 7, punching speed, pressure, prone to injury. Due to the long mold manufacturing cycle and high manufacturing cost, when the small number of parts, cold stamping process is not economical. Only when mass production, mold manufacturing costs on the cost of the work is very small, cold stamping process became economical and reliable processing methods.