Rear axle locking gasket die capable of punching 24 holes in two steps and machining process of die

Abstract

The invention discloses a rear axle locking gasket die capable of punching 24 holes in two steps. The die comprises an upper die body and a lower die body. The upper die body comprises a die shank, an upper die plate, an upper base plate and a male die fixing plate. The male die fixing plate is of a step structure with the upper portion being large and the lower portion being small. The step of the lower portion of the male die fixing plate is cylindrical. 12 punching male die bodies are uniformly arranged on the male die fixing plate in the circumferential direction of the cylindrical step. The lower die body comprises a female die fixing plate, a lower die base plate and a lower die plate. 12 female die positioning holes are uniformly formed in the female die fixing plate in the circumferential direction of the center. A punching female die body is arranged in each female die positioning hole. An automatic correction guiding mechanism and a discharging mechanism are arranged between the male die fixing plate and the female die fixing plate. Punching stations are arranged between a punching male die body and punching holes of a punching female die body. According to the rear axle locking gasket die, the service life is long, the punching process is stable, secondary punching is adopted so that a set of dies is omitted, positioning for the secondary punching is convenient, and the appearance of a product is regular.

Description

technical field [0001] The invention belongs to the field of mechanical processing equipment, and in particular relates to a two-step punching die with 24 holes for a rear axle lock washer. Background technique [0002] The rear axle assembly is connected to the half shaft through the main reduction assembly, the half shaft is connected to the rear hub assembly, and the lock washer plays the role of locking the bearing nut to prevent the bearing nut from loosening, which directly affects the half shaft and the rear hub Assembly connection strength. According to the current traditional punching die structure, the guide pillars and guide sleeves directly guide the upper and lower templates, which are greatly affected by the precision of the machine tool and the machining precision of the mold. Because the thickness of the workpiece is relatively thick, up to 4.0mm, and 12 Φ7 holes must be punched at the same time, each punching punch is easy to move during the production proc...

AI Technical Summary

Problems solved by technology

According to the current traditional punching die structure, the guide pillars and guide sleeves directly guide the upper and lower templates, which are greatly affected by the accuracy of machine tools and mold processing accuracy.

Because the thickness of the workpiece is relatively thick, up to 4.0mm, and 12 Φ7 holes must be punched at the same time, each punching punch is easy to move during the production process, so that the punching convex and concave gaps are uneven, and sometimes even the The punching convex and concave die edges are missing, so there are more burrs in each hole when punching (the punching burrs of the workpiece will directly affect the assembly function), so it is difficult to guarantee the product quality, and generally every 1000-1200 pieces of products are produced. Demolding and sharpening punching convex and concave die cutting edges

In addition, the workpiece plate is thick, and the holes are punched at the same time, and the hole diameters are small. Generally, the punching punch will break every time 2,000 products are produced, so the punching punch must be replaced frequently, resulting in a decrease in mold accuracy, thereby reducing the service life of the mold.

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