High-strength steel laser-assisted incremental forming technology

Abstract

The invention belongs to the technical field of material machining, and relates to a high-strength steel laser-assisted incremental forming technology. The purpose of the invention is that through thelaser heating assisted high-strength steel incremental forming process, laser precisely heats a high-strength steel plate material along the machining trajectory, accordingly, resistance to deformation of the high-strength steel in the incremental forming plastic deformation process is reduced, the formability of the high-strength steel is improved, and the working efficiency is improved. An implementation method mainly comprises the steps that the machining trajectory is designed, the high-strength steel plate material is installed and fixed, a laser is started to heat the starting point ofthe trajectory to a certain extent, then, the laser slowly moves along the trajectory at the constant speed, meanwhile, a machining pressure head conducts machining along the trajectory, and after machining is completed, the performance of a part is tested and evaluated. According to the high-strength steel laser-assisted incremental forming technology, a program controlled laser emitting device is additionally arranged on original incremental forming equipment, the plate material is subjected to laser assisted heating in the incremental forming process, the formability of the high-strength steel is improved, the tendency of cracking even fracturing occurring in the machining process is reduced, and the machining efficiency is improved. The problems that the high-strength steel is difficult to deform and prone to cracking in the machining process can be effectively solved, and accordingly, a reliable machining method through which the productivity is improved in the actual production process, and the production cost is reduced is provided.

Description

technical field [0001] The invention belongs to laser-assisted incremental forming technology, aiming at the difficult deformation problem of high-strength steel, the incremental forming is assisted by laser heating technology. Background technique [0002] The numerical control incremental forming technology of sheet metal is a forming process proposed in the 1990s. It applies the "layered manufacturing" theory in rapid prototyping technology to decompose the three-dimensional overall forming method of complex parts into a series of two-dimensional local parts. , point-by-point plastic forming, it does not require special molds in the forming process, which can effectively reduce production costs and improve the flexibility of the processing process. [0003] However, for high-strength steel plates, since their strength is much higher than that of traditional materials, incremental local forming requires a very high single-point forming force. It is difficult for current pr...

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Problems solved by technology

[0003] However, for high-strength steel plates, since their strength is much higher than that of traditional materials, incremental local forming requires a very high single-point forming force. It is difficult for current processing tools and equipment to meet the processing requirements. Accidents occurred, so it is urgent to explore an effective cumulative forming technology and method for high-strength steel

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