Drawing process of arc corner connecting rib of metal box shell

Abstract

The invention discloses a drawing process of an arc corner connecting rib of a metal box shell. The drawing process comprises the following steps that the metal rectangular shell is prepared, and arc corner transition portions are arranged at the vertex corners of the metal rectangular shell; a first metal drawing die is used for drawing a top face plate of the metal rectangular shell for the first time, so that a plurality of first convex strips are formed in the first area between the two arc corner transition portions of the top face plate; and a second metal drawing die is used for drawing a side face plate and arc corner transition portions of the metal rectangular shell obtained after first-time drawing molding for the second time, so that a plurality of second convex strips are formed in the second area between the two arc corner transition portions of the side face plate. The drawing process has the beneficial effects that through two times of drawing, arc corners can be orderly, and the stress capacity of the arc corners is improved; meanwhile, convex grain can be formed on the shell, especially on the arc corners, and attractiveness and durability are achieved; especially, die stripping is facilitated in the whole manufacturing process, the production process is simplified, and the occurrence rate of defective goods is lowered.

Description

technical field [0001] The invention belongs to the field of manufacturing metal boxes, and in particular relates to a stretching process for connecting ribs at arc corners of metal box shells. Background technique [0002] Rigid shaped luggage is widely used by people because it can maintain the shape of the appearance and protect the contents of the box to a certain extent, especially the aluminum alloy luggage, which can protect the internal components, with reasonable design and strong structure. Beautiful, easy to use and other characteristics, widely used in instruments, meters, electronics, communications, automation, sensors, precision machinery and other industries, is an ideal box for high-end instruments. Most of the existing boxes and covers are integrally drawn structures, with corrugated grooves or convex lines on the upper and lower surfaces, but there are no boxes with corrugated grooves or convex lines on the sides at the same time. If such a box is stretche...

AI Technical Summary

Problems solved by technology

Most of the existing boxes and covers are integrally drawn structures, with corrugated grooves or convex lines on the upper and lower surfaces, but there are no boxes with corrugated grooves or convex lines on the sides at the same time. If such a box is stretched at one time, the mold will be relatively difficult Complicated, it is very difficult to remove the mold during the molding process, especially it is not easy to stretch out the convex line between the arc corner transition parts, and it is easy to jam the mold during the stretching process, resulting in defective products

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