Double-wheel spinning die and machining process thereof

Abstract

The invention discloses a double-wheel spinning die and a machining process thereof. The double-wheel spinning die comprises an upper die assembly driven by an upper die driving mechanism to move up and down, a lower die assembly driven by a lower die driving mechanism to rotate, and spinning assemblies symmetrically arranged on the two sides of the upper die assembly and capable of rotating. The spinning assembly is driven by a spinning driving mechanism to move up and down and move back and forth in the left-right direction. The upper die assembly is of a hollow structure, the top of the lower die assembly is inserted into the upper die assembly, after a blank is placed on the lower die assembly, a pressing block of the upper die assembly is pressed downwards to abut against the shoulder of the blank, and a bearing is arranged between the upper die assembly and the pressing block. Openings communicated with the middle cavity are formed in the two sides of the upper die assembly, the spinning assemblies are arranged at the openings of the upper die assembly respectively, and pressing wheels of the spinning assemblies spin blank cup openings from bottom to top.

Description

technical field [0001] The invention relates to a cup body processing mold, in particular to a double-wheel spinning mold specially used for cup mouth processing and a processing technology thereof. Background technique [0002] The existing metal cups are usually divided into large cup cups and small cup cups. The diameter of the cup mouth of the small cup cup is smaller than the diameter of the cup body, and the cup mouth is generally only processed by shrinking. The size of the mouth of the cup is reduced or shrunk into a certain shape. Since the pipe material used to make the cup has a welding seam, the welding seam is higher than the outer surface of the cup material. Generally, the welding seam should be sandblasted before shrinking, and the welding seam should be smoothed. If the sandblasting seam is not properly processed , After the thread rolling and rib pressing in the subsequent sequence, due to the existence of threads and rib grooves, the welding seam will be ...

AI Technical Summary

Problems solved by technology

It can be seen that in the existing shrinking technology, the upper and lower positions of the cup are limited when shrinking, and the margin of shrinking is all accumulated in the mouth of the cup, which will increase the thickness and hardness of the mouth of the cup, which not only increases the number of rolls in the subsequent sequence. Processes such as threading or rolling are difficult to process, and a lot of material is wasted

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