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A sawtooth aircraft skin clamping and CNC shape milling method

A technology for aircraft skinning and milling, applied in clamping, positioning device, milling machine equipment and other directions, can solve the problems of repeated parts positioning, low efficiency, and low trimming accuracy.

Active Publication Date: 2021-07-30
JIANGXI HONGDU AVIATION IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the defects of low milling and trimming precision of parts, high labor intensity and low efficiency, the present invention provides a sawtooth aircraft skin clamping and CNC shape milling method, the purpose of which is to adopt a new CNC shape milling technology It is used to solve the chatter and phenomenon in the process of milling and cutting the shape; on the other hand, it can design and manufacture special fixtures to solve the inaccurate problems caused by repeated parts positioning and error accumulation, etc.

Method used

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  • A sawtooth aircraft skin clamping and CNC shape milling method
  • A sawtooth aircraft skin clamping and CNC shape milling method
  • A sawtooth aircraft skin clamping and CNC shape milling method

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Embodiment Construction

[0020] The present invention is described in detail below in conjunction with accompanying drawing: a kind of sawtooth aircraft skin clamping and numerical control shape milling method, this method comprises the following steps:

[0021] When the skin part 2 is drawn, the first movable fixture 4 and the second movable fixture 5 are removed. After the skin part 2 is drawn, the blank is cut, the skin positioning hole 1 is drilled, and then the skin part 2 is After positioning on the drawing mold 3, use the first movable fixture 4 and the second movable fixture 5 to clamp in turn, and after clamping, carry out CNC contour milling on the skin part 2 on the modified drawing mold tooling on the CNC milling machine Cutting, in order to prevent the vibration of the skin part 2 after milling, leave the thickness of the skin part 2 without milling, and remove the skin part 2 after milling, and the fitter will trim the edge.

[0022] The milling sequence is:

[0023] First use the first...

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Abstract

The invention relates to a sawtooth aircraft skin clamping and numerical control shape milling method, which belongs to the aircraft skin clamping and numerical control shape milling technology, and belongs to the technical field of aviation manufacturing. The method comprises the steps of: removing the first movable fixture and the second movable fixture when the skin part is drawn, cutting the blank after the skin part is drawn, drilling the skin positioning hole, and then placing the skin part After positioning on the drawing die, use the first movable fixture and the second movable fixture to clamp in turn, and after clamping, carry out CNC milling on the skin parts on the CNC milling machine on the modified drawing die tooling, in order to prevent The skin part vibrates after milling, leaving the thickness of the skin part without milling. After milling, the skin part is removed, and the fitter trims the edge.

Description

technical field [0001] The invention relates to a sawtooth aircraft skin clamping and numerical control shape milling method, which belongs to the aircraft skin clamping and numerical control shape milling technology, and belongs to the technical field of aviation manufacturing. Background technique [0002] Skin parts, as the key parts constituting the aerodynamic shape of aircraft, have complex shape, large size range and low stiffness. The manufacturing accuracy of modern aircraft products requires not only lamination, but also no knocking and forming (such as civil aircraft sheet metal parts), and stable shape accuracy, surface quality and performance status. Due to the need for structural stealth of my country's next-generation military aircraft products, the zigzag skin joint requires further reducing the error control of skin parts, and the non-surplus assembly technology puts forward high requirements for the manufacturing accuracy of skin parts. That is, the digita...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23C3/00B23Q3/06
CPCB23C3/00B23Q3/062
Inventor 曾斌朱乐宗龚甘霖文松涛廖可高荣涛熊勇李旸汪洋华
Owner JIANGXI HONGDU AVIATION IND GRP