Punching mold of railway truck bearing sealing cover cold punching process

Abstract

The invention discloses a punching mold of a railway truck bearing sealing cover cold punching process. The punching mold comprises a base; a support rod is fixed above the top of the base; a mounting base is fixed above the top of the support rod; a positioning column and a spring are fixed above the top of the mounting base; the spring is positioned on the inner side of the positioning column; the top of the spring is fixedly connected with a limiting connecting plate; the limiting connecting plate is positioned above the top of the mounting base; the top of the limiting connecting plate is fixed with a connecting block; and a bottom screw of the limiting connecting plate is fixedly connected with an upper convex mold. Through matching use of such structures as a servo motor, a first gear and a second gear, a thread hole can be screwed out from a lower concave mold structure, so that a lower concave mold body is convenient to take or replace, the disassembly and the assembly are convenient, meanwhile, the replacement of the lower concave mold body needs no replacement of the whole mold, and the use is flexible.

Description

technical field [0001] The invention relates to the technical field of stamping dies, in particular to a stamping die for the cold stamping process of bearing sealing covers of railway wagons. Background technique [0002] The sealing cover is an important part of the bearing sealing device of railway freight cars. The sealing device is composed of a sealing cover, an inner oil seal, an outer oil seal and a sealing seat. Among them, the big end of the sealing cover and the circumferential surface of the teeth are embedded in the outer ring of the bearing, the small end is pressed into the outer oil seal, and the inner oil seal is closely matched with the sealing seat. After the bearing is assembled, there is no contact between the inner and outer oil seals, but the unevenness between them cooperates to form a labyrinth, the main function is to seal the bearing lubricating oil and prevent dust from entering. Once the sealing device fails, the temperature of the bearing will...

AI Technical Summary

Problems solved by technology

The traditional stamping die has many internal openings, which is not only inconvenient to process, but also high in production cost

The traditional stamping die does not have a good guiding and positioning structure, and it will deviate during the pressing process of the upper punch, which will affect the molding quality of the sealing cover

At the same time, the lower die of the traditional stamping die is set in one piece and cannot be replaced. Once replaced, the entire die will be replaced, which is not flexible enough to use

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