An insert-type carbide rolling die for wheel rims

Abstract

The invention provides an insert type cemented carbide rolling mold for the rim, which can effectively improve the hardness, wear resistance and smoothness of the key parts of the mold, so as to improve the product quality and reduce the production cost. The rim of the invention includes the middle part The groove bottom section, one side of the middle groove bottom section is connected with a 5° slope section, the other side is connected with a flat peak section, the flat peak section is connected with another 5° slope section, and the outer sides of the two 5° slope sections are respectively connected with the rim section; The insert-type cemented carbide rolling mold includes an upper roll, a lower roll, an upper roll insert, and a lower roll insert. An annular step is provided on both sides of the outer circular surface of the upper roll and the lower roll. The upper roll insert Both the upper rolling insert and the lower rolling insert are ring-shaped parts, the two upper rolling inserts are matched with the annular steps of the upper rolling outer surface respectively, and the two lower rolling inserts are respectively matched with the annular steps of the lower rolling outer surface, and the upper rolling inserts Both the block and the rolling insert are made of carbide material.

Description

technical field [0001] The invention relates to the field of manufacturing molds for wheel rims, in particular to an insert type hard alloy rolling mold for wheel rims. Background technique [0002] With the advancement of automobile lightweight, the overall weight of steel wheels continues to decrease, while performance requirements continue to increase and improve. In order to meet the requirements, the design of steel wheels needs to optimize the product structure and increase the strength level of the material. With the optimization of the product structure, the manufacturing process becomes complex and difficult; the strength level of the material is improved, and the traditional mold materials show varying degrees of inapplicability or unusability. Therefore, it is necessary to continuously explore and try out new processes and new technologies to meet product process requirements. [0003] Passenger car steel wheels are welded by spokes and rims, and rims are proces...

AI Technical Summary

Problems solved by technology

During the rolling process, the edge of the rim is equivalent to a high-speed rotating tool. The working condition is poor, and problems such as burrs, flashes, crushing and large differences in the shape of the rim are prone to occur.

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