Cold-rolled steel sheet metal part bending process

Abstract

The invention discloses a cold-rolled steel sheet metal part bending process, and belongs to the field of bending technology. A hollow bending-resistant straight knife is adopted for extruding and bending a cold-rolled steel sheet metal part, on one hand, the hollow bending-resistant straight knife can correspondingly bend and deform along with touch of the cold-rolled steel sheet metal part, self-adaptive avoidance of the cold-rolled steel sheet metal part is achieved, compared with the bending process of first quantitative bending and then edge pressing in the prior art, direct bending operation of multiple bends can be achieved, the bending efficiency is greatly improved, meanwhile, the accuracy of the bending size is also improved, and on the other hand, the hollow bending-resistant straight knife synchronously drives cooling liquid therein to circulate during self-adaptive avoidance, self-circulating cooling of the cooling liquid and circulating cooling of the cold-rolled steel sheet metal part and the hollow bending-resistant straight knife are achieved, the influence of heat on the hardness and strength of the cold-rolled steel sheet metal part is reduced, and the cold-rolled steel sheet metal part is not prone to springback after being bent.

Description

technical field [0001] The invention relates to the field of bending technology, and more specifically, relates to a bending technology of cold-rolled steel sheet metal parts. Background technique [0002] Cold rolling is a product made of hot-rolled steel coils as raw materials, after pickling to remove scale, and rolling at room temperature below the recrystallization temperature. Cold-rolled sheet has good performance, that is, through cold-rolling, cold-rolled strip and steel sheet with thinner thickness and higher precision can be obtained, with high flatness, high surface finish, clean and bright surface of cold-rolled sheet, and easy for coating It has many kinds of processing and various uses, and has the characteristics of high stamping performance, no aging, and low yield point. It is mostly used in automobile manufacturing and electrical products. [0003] After the cold-rolled sheet is rolled, it is often rolled into a cylindrical shape for easy transportation a...

AI Technical Summary

Problems solved by technology

[0004] In the bending process, if you only bend one bend, you don’t need to consider the issue of avoidance. Use a straight knife for bending. If you need to bend multiple bends; in some cases, you need to consider the issue of avoidance. Figure 10 And attached Figure 11 As shown (m represents a scimitar, n represents a cold-rolled plate), the prior art generally uses a small scimitar or a large scimitar to perform avoidance bending on the cold-rolled plate; When the position is in place, the following method is used for bending: as attached Figure 12 As shown (m means scimitar, n means cold-rolled plate, k means edge-holding equipment), first bend the cold-rolled plate to a certain angle (stop before touching the knife), and then press the edge to the specified angle Angle is required, but this method is not as effective as direct bending, and the size and angle are prone to deviation

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