Red edge-cutting and hole-punching manufacture technology of automobile generator finish forging claw pole

Abstract

The invention relates to a red trimming and punching manufacturing technique for finish forging claw poles of automobile generators, which comprises the following steps: a. blanking; b. heating; c. upsetting; d. dummying; e. finish forging; f. red trimming and punching; g. magnetic annealing; h. cold finishing; i. lathing the surface of excircle; j. finish boring holes. The red trimming and punching manufacturing technique is used for leading the five processes of heating, upsetting, dummying, finish forging and punching with red trimmings to form the flow line production, which reduces the logistic cost, and the temperature of products can reach 950 DEG C to 1050 DEG C when being punched, and the cutting strength of materials is low now. The invention reduces the tonnage of the equipment greatly, prolongs the service life of the equipment and reduces the noise. As the finish forging process and the process of red trimming and punching form the production line, the appearance quality of the finish forged products can be controlled effectively, thus improving the product quality. The punching can be finished when the red trimming is carried out, and the equipment and operators can be reduced; compared with the original art, the red trimming and punching manufacturing technique for the finish forging claw poles of the automobile generators can reduce the drilling processes, can reduce the production cost, enhance the safety and can improve the environment of production fields.

Description

technical field [0001] The invention relates to a red trimming punching manufacturing process for precision forging claw poles of automobile generators. Background technique [0002] Modern cars have generally adopted electrical components such as air conditioners, electric injection engines, electronically controlled doors and windows, and electrically adjustable seats, and the power consumption has risen sharply. The alternator is the key component of the car, which is responsible for the power supply of the car. The configuration of the car is different, the power consumption demand is different, the alternator is different, and the corresponding claw poles are different. The alternator is mounted next to the engine and is turned by the engine to convert mechanical energy into electrical energy. The alternator is composed of two parts, the stator winding and the rotor winding. The three-phase stator windings are distributed on the housing according to the difference of 1...

AI Technical Summary

Problems solved by technology

[0004] 1. Precision casting: The claws produced by this process are extremely prone to defects such as shrinkage cavities, looseness, inclusions, and chemical composition instability, which lead to increased reluctance and poor electromagnetic performance, which affects the power of the generator and cannot adapt to the volume of today's automotive generators. The development trend of shrinking and increasing power, moreover, casting is easy to produce hard spots, and it is not easy to machine

[0005] 2. Stamping process: This process must use large-scale forging equipment, which requires a large initial investment, and this process cannot produce claw poles with yokes, and an additional yoke must be equipped, resulting in an assembly air gap and increased magnetic resistance, which affects the generator. power

However, this process requires two heatings, and the production cost is relatively high

[0007] 4. Edge trimming process, the cold trimming process was used in the past. The temperature of the product after precision forging is 900 to 1000 degrees. The product must be loaded into the transfer box first. After the product is completely cooled, the product is poured out and trimmed. The consequences are: 1), precision forging is to assemble the box, turn over the box when cutting the edge, the product circulation time is long, the product is seriously damaged, and the logistics cost is high; 2), the product shear strength is high when the edge is cold cut, and the shear force Large, causing serious equipment damage and high maintenance costs; 3), loud noise during cold cutting

[0008] 5. Drilling process, the vertical drill used in the equipment, during operation, iron cutting and cutting fluid splash, poor safety, poor surrounding environment

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