A Method of Reducing Axial Forming Force During Single Point Incremental Forming

Abstract

The invention discloses a method for reducing axial forming force in a single-point incremental forming process. The method comprises the steps that firstly, calculation is carried out according to the magnitude of axial force required to be reduced in the single-point incremental forming process, an adjusting value phi is obtained, and according to the adjusting value, an overflow valve of the corresponding specification is selected to be connected into a transformed hydraulic system; secondly, a clamp on an existing single-point incremental forming numerical control machine tool is transformed, a hydraulic cavity in the clamp is connected with the hydraulic system, the hydraulic cavity is filled with the hydraulic oil, an upper board is arranged on the upper portion of the hydraulic cavity, and sealed space is formed between the upper board and the hydraulic cavity; and thirdly, after the first step and the second step are executed, the hydraulic system is started, the negative pressure relative to the atmospheric pressure is generated in the hydraulic cavity, the single-point incremental forming numerical control machine tool is started, and the mounted board is formed until forming is completed. According to the method for reducing the axial forming force in the single-point incremental forming process, the axial force in the single-point incremental forming process can be reduced, and the quality of a forming part is improved.

Description

technical field [0001] The invention belongs to the technical field of sheet material plastic forming methods, and in particular relates to a method for reducing axial forming force in a single-point incremental forming process. Background technique [0002] Single-point incremental forming technology is a new type of sheet metal plastic forming technology. It is based on the idea of ​​layered manufacturing in rapid prototyping. The accumulation of forming replaces the overall forming. [0003] The single-point incremental forming technology is a good combination of sheet metal forming technology, computer-aided manufacturing technology and numerical control technology, using three-dimensional software to establish the CAD model to be formed and process it into an NC program that can be recognized by the numerical control system, and import it into the numerical control machine tool to combine Fixtures can form the corresponding parts. In addition, in practical application...

AI Technical Summary

Problems solved by technology

Although the forming force is relatively small compared with the existing stamping technology, since the single-point incremental forming technology uses CNC machine tools, the forming force during the forming process is a large load for the CNC machine tool, and the forming strength is higher if used For example: aluminum alloy, iron plate, steel plate or even titanium alloy, the axial force will be greater, which puts forward higher requirements for the strength of the single-point incremental forming CNC machine tool, especially the strength of the machine tool spindle

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