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Double-S-shaped double-curve thin-walled part manufacturing process

A manufacturing process and technology of thin-walled parts, which is applied in the field of double "S"-shaped hyperbolic thin-walled parts manufacturing technology, can solve the problem of wall thickness size, shape tolerance, high surface quality requirements, easy vibration, difficult to control processing deformation, etc. problems, to achieve the effect of enhancing clamping stability and processing rigidity, ensuring size and accuracy, and avoiding vibration problems

Active Publication Date: 2015-04-22
JIANGXI HONGDU AVIATION IND GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1) The part is a thin-walled part with complex curved surface, the profile is a double "S"-shaped hyperboloid, and the curvature changes greatly. It is a major difficulty to formulate a reasonable process plan; 2) The part structure is all space curved surface, without clamping and positioning reference, It is difficult to position and clamp the part, and it is easy to generate vibration during processing; 3) The surface structure of the part is complex, and there are many twisted ribs on the shape surface. Dimensions, shape tolerances, and high surface quality requirements make it difficult to customize the machining sequence, tool selection, programming, and cutting methods of structural parts

Method used

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Embodiment

[0031] Example: see figure 1 .

[0032] A manufacturing process of a double "S"-shaped hyperbolic thin-walled part, using five-coordinate high-speed milling to perform rough machining of inner surface 1, rough machining of outer surface 2, semi-finishing and finishing of inner surface 1, outer surface 2 and The ribs 3 are semi-finishing and finishing, the inner surface 1 is the concave part of the part, and the outer surface 2 is the convex part of the part with ribs, and the clamping and positioning are carried out by adding step pad positioning and gypsum filling method, Its manufacturing process is as follows:

[0033] 1) Rough machining of inner surface:

[0034] The bottom surface of the process boss around the outer surface with ribs is positioned, and the clamping and positioning method is adopted with two holes on one side, and the pressure plate groove is opened around the blank, and the pressure plate is clamped. After rough machining, a 4mm process allowance is l...

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Abstract

The invention relates to the technical field of mechanical machining, in particular to a double-S-shaped double-curve thin-walled part manufacturing process. A five-coordinate high-speed mill is adopted to conduct rough machining on an inner curve and an outer curve with ribs and conduct semi-finish machining and finish machining on the inner curve and the outer curve with ribs, and a step cushion block positioning and gypsum filling method is adopted to perform clamping and positioning. The part clamping and positioning problems are solved, and part clamping stability and machining rigidity are improved. Regional segmented and layered machining is adopted for parts, machining deformation of ultra-complicated thin-walled curved surfaces is effectively controlled, the vibration problem in the machining process is avoided, and part size and accuracy are ensured.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a manufacturing process of a double "S"-shaped hyperbolic thin-walled part. Background technique [0002] The double "S"-shaped hyperboloid thin-walled panel is a complex panel of the aircraft, that is, any cross-sectional view along the axis is a double "S"-shaped structure, and the thinnest part of the wall thickness is 1.5mm. In order to increase the structural strength, it is designed on the surface of the curved surface A number of ribs are installed, and the ribs are twisted shapes with coexistence of opening and closing angles. The special double "S"-shaped hyperboloid thin-walled panels have complex shapes and are difficult to process, and there is no reference manufacturing process for this structure. The processing technology of similar curved surface thin-walled parts and the difference from double "S"-shaped hyperboloid thin-walled panels: ① Use sheet m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 兰惠向兵飞曹爱萍傅勇冯亮黄洪斌方瑞黄晶熊勇
Owner JIANGXI HONGDU AVIATION IND GRP
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