Positioning and clamping tool and method for inner hole laser cutting of thin-walled annular sheet metal part

A laser cutting and positioning fixture technology, which is applied in the field of sheet metal forming, can solve the problems of low processing accuracy, achieve the effects of improving processing accuracy, eliminating cutting force, and reducing positioning errors

Active Publication Date: 2016-12-21
AECC AVIATION POWER CO LTD
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Problems solved by technology

[0005] The object of the present invention is to provide a positioning clamping tool and method for laser cutting inner holes of thin-walled annular sheet metal parts. Sim

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  • Positioning and clamping tool and method for inner hole laser cutting of thin-walled annular sheet metal part
  • Positioning and clamping tool and method for inner hole laser cutting of thin-walled annular sheet metal part
  • Positioning and clamping tool and method for inner hole laser cutting of thin-walled annular sheet metal part

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Embodiment Construction

[0039] The present invention will be further described in detail below in conjunction with specific embodiments, which are explanations of the present invention rather than limitations.

[0040] The invention discloses a process method for laser cutting an inner hole of a thin-walled annular sheet metal part. A positioning and clamping scheme based on the outer surface of the part is proposed, and a cross-shaped horizontal cage is used to clamp the part to improve positioning accuracy. It can solve the problems of clamping deformation and low machining accuracy of thin-walled ring-shaped sheet metal parts, and ensure high concentricity requirements. The specific content involves:

[0041] The positioning fixture using the outer surface of the part, such as figure 2 and Figure 3-1 , Figure 3-2 shown. The outer surface of the part fits and positions with the inner surface of the positioning fixture. One problem that needs to be overcome is that the size of the positionin...

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Abstract

The invention discloses a positioning and clamping tool and method for inner hole laser cutting of a thin-walled annular sheet metal part, belongs to the technical field of metal plate forming and provides a positioning and clamping scheme using the outer profile of a part as standard. The part is clamped by adopting a cross-shaped horizontal retainer to improve the positioning precision. The problem that a thin-walled annular sheet metal part deforms during clamping and is low in machining precision can be solved, and the higher concentricity requirement is ensured. The method can be applied to manufacture of stator inner rings of an aero-engine gas compressor, can be popularized and applied to the manufacturing field of thin-walled annular parts with similar structures. The clamping tool is simple in structure and convenient to operate, rapid and accurate positioning is achieved, and the machining precision and production efficiency are improved.

Description

technical field [0001] The invention belongs to the technical field of sheet metal forming, and in particular relates to a positioning clamping tool and method for laser cutting inner holes of thin-walled annular sheet metal parts. Background technique [0002] Based on economic considerations, the stator inner ring of a new type of aero-engine compressor adopts a titanium alloy sheet metal forming process, and its structure is as follows figure 1 shown. Since the diameter of the part is about Φ800mm and the wall thickness is 1mm, the rigidity of the formed part is weak, and the roundness error in the free state is relatively large. When processing the inner hole, the part must be rounded to ensure that the concentricity of the shape facing the inner hole is not greater than 0.1 mm requirements. According to the requirements of the forming process, an appropriate margin must be left in the inner holes at both ends of the part, but it must be removed after finishing. [00...

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Application Information

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IPC IPC(8): B23K26/70
CPCB23K26/702
Inventor 李新孝申键柳万珠王卫峰颉文峰江涛
Owner AECC AVIATION POWER CO LTD
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