Cutting and fixing device and cutting method of sheet part

Abstract

The invention relates to a cutting and fixing device of sheet parts, comprising a supporting base used for supporting and fixing a part to be cut. The cutting and fixing device also comprises a first backing part and a second backing part, wherein the first backing part and the second backing part can be rotatablely installed on the supporting base and are used for compacting the part to be cut; the inner side edge of the first backing part has the same shape with an expected exterior outline of the part; the outer side edge of the second backing part has the shape complementary with the expected exterior outline of the part; a gap between the first backing part and the second backing part forms a cutting passageway; and the cutting passageway is used for guiding a cutting tool to cut thepart in the direction vertical to the part in the cutting passageway. The invention also relates to a cutting method of the sheet parts by using the cutting and fixing device. The invention is characterized by adopting a double backing structure to cause the cutting tool to vertically cut the part between two backings so as to effectively avoid the phenomenon of jump.

Description

technical field [0001] The invention relates to a cutting and fixing device for thin plate parts. Furthermore, the invention also relates to a cutting method in which thin-plate parts are cut using the cutting fixture. The thin plate part is, for example, a skin part on an aircraft, mainly an aluminum alloy thin plate. Background technique [0002] Usually, the cutting for skin parts, that is, aluminum alloy sheet, is mainly composed of two parts. One part is to install the part on the cutting fixture, which is mainly used to keep the part stable during the cutting process, so that the tool can mill out the correct shape of the part according to the pattern of the milling fixture; the other part is to use the pneumatic cutting tool to cut the part Cutting, in this process to ensure that the cutting angle is very important for the cutting effect of the part. [0003] At present, most of the cutting methods of parts adopt the form of unilateral profiling, that is, the cutti...

AI Technical Summary

Problems solved by technology

The main reasons are as follows: 1. The tool jumps when milling due to impurities on the cutting edge during travel; 2. The cutting angle during milling changes due to improper operation of the worker, causing the milling tool to jump; 3. 1. During the cutting operation, the unstable pneumatic pressure causes the milling tool to jump; 4. Due to the plasticity of the aluminum alloy material, the built-up edge occurs during the cutting process, causing the milling tool to jump; 5. The knife breaks during the cutting process. In some cases, it will cause the milling tool to jump, etc.

The phenomenon of knife jumping will cause the tool to cut the shape of the part by mistake, and the part will be scrapped due to the shape defect

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