A wire cutting method for three-dimensional sheet metal parts

Abstract

The invention discloses a linear cutting method for a three-dimensional sheet metal part. A linear cutting process is formulated by manufacturing a simple tooling fixture and being combined with a three-dimensional diagram of the sheet metal part, simple tooling manufactures a supporting fixture according to the section inner contour, a plurality of sets of flexible suction cup fixing parts are adopted, and meanwhile, a cutting coordinate system is established, the contour line is obtained through a projection method to form a cutting path. The linear cutting method changes the sheet metal part cutting track with the three-dimensional surface into one or several two-dimensional cutting track according to the scheme, the cutting process can be completed through an input line cutting machinetool and by being combined with the specific tooling fixture, the cutting quality and efficiency are ensured while the cost in the research and development manufacture process of the sheet metal partis reduced, and the linear cutting method is especially suitable for cutting forming of special small batches and trial samples.

Description

technical field [0001] The invention relates to the field of cutting sheet metal parts, in particular to a wire cutting method for three-dimensional sheet metal parts. Background technique [0002] Sheet metal parts are processed from metal sheets by stamping, bending, stretching, etc., and have important applications in various fields such as transportation, aerospace, electronic appliances, medical equipment, petrochemicals, and daily life. In applications such as aircraft, spacecraft, and deep-sea exploration, complex curved surfaces can obtain better streamlines, which meet the requirements of fluid mechanics and aerodynamics. Strict surface requirements ensure the flight speed, orbit or dive of the whole machine Depth and other important technical indicators. [0003] The last processing step in the production and manufacture of three-dimensional sheet metal parts with complex profiles is cutting and forming. The commonly used technical solutions in the industry are: h...

AI Technical Summary

Problems solved by technology

Domestically, for the small batch production of three-dimensional sheet metal parts with complex profiles, the patents mainly focus on the three-dimensional cutting device and are more suitable for laser cutting in mass production. For example, CN201721280085.9 and CN201510538139.6 disclose a mechanical transmission type The advanced three-dimensional cutting device can better play the excellent characteristics of laser vector cutting, but the cost of laser is high and the quality requirements of the personnel who write the processing trajectory are also extremely high, and at the same time, it will have a certain thermal impact on the cutting edge

The high-pressure water three-dimensional cutting method provided in CN201410701674.4 requires high requirements for the design and manufacture of avoidance-type support tooling, and has poor versatility for small batches and multiple types

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