Thermoforming and edge-cutting integrated technique and mold of high-duty steel part

Abstract

The invention provides hot-forming and edge-cutting integral technology and a hot-forming and edge-cutting integral die for high strength steel parts. The integral technology comprises the following steps: arranging an edge-cutting tool on a hot-forming die of the high strength steel parts; placing high strength steel plate materials which is heated to be completely austenized into the hot-forming die for punching before hot stamping forming of the high strength steel plate materials; and utilizing the edge-cutting tool on the hot-forming die to perform edge-cutting operation on workpieces subjected to stamping after the hot-forming die is closed. The integral die comprises an upper die, a lower die, an upper edge-cutting tool and a lower edge-cutting tool, wherein an upper die oil cylinder is arranged at the upper end of the upper die; a piston rod of the upper die oil cylinder is connected with the upper edge-cutting tool; a lower die oil cylinder is arranged at the bottom of the lower die; and a piston rod of the lower die oil cylinder is connected with the lower end of a mandrel of which the upper end is connected with the lower edge-cutting tool. The hot-forming and edge-cutting integral technology and the hot-forming and edge-cutting integral die for the high strength steel parts reduce the equipment investment and the production cost of hot forming, and shorten the production period; and the parts have high edge-cutting quality and high dimension precision and shape precision.

Description

technical field [0001] The invention relates to a hot stamping forming and edge trimming process and a die of high-strength steel, advanced high-strength steel and ultra-high-strength steel stamping parts, and belongs to the technical field of forming high-strength steel plate metal parts. Background technique [0002] At present, in the field of automobile manufacturing, people's demand for high safety, low dead weight and good fuel economy has become an important driving factor for technological progress. Manufacturers are making consumers' wishes come true by introducing new safety concepts and lightweight body structures. Especially in terms of body structure, through the use of high-strength steel, advanced high-strength steel and ultra-high-strength steel, the crash performance of the car is improved and the requirement of lightweight is also achieved. However, with the increase of steel strength, the elongation rate decreases, and the formability of the material is a...

AI Technical Summary

Problems solved by technology

[0008] Chinese patent document CN2617549 discloses a "new hot punching and trimming die", which is used for hot punching and trimming dies for forgings. The die disclosed in this patent can only use the slide block movement of the press to complete a single Punching, trimming, but not for forming, trimming or punching composite, in addition, the mold structure is used for steel block forging, which belongs to the field of volume forming, and cannot be used for high-strength sheet metal belonging to the field of sheet metal forming punching or trimming

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