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Aviation structural part high-precision lug group machining method

A technology for aerospace structural parts and processing methods, which is applied in metal processing equipment, metal processing mechanical parts, manufacturing tools, etc., to improve processing efficiency, ensure high-precision ear size requirements, and improve processing efficiency and processing stability.

Active Publication Date: 2020-07-10
CHENGDU AIRCRAFT INDUSTRY GROUP
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Problems solved by technology

[0007] The purpose of the present invention is to propose a processing method for the high-precision lug group of aviation structural parts, aiming at the quality and efficiency problems existing in the size of high-precision lugs of aviation aluminum alloy structural parts in the process of using traditional processing schemes. Using this processing method can Fast and high-quality processing of lug set parts

Method used

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  • Aviation structural part high-precision lug group machining method
  • Aviation structural part high-precision lug group machining method
  • Aviation structural part high-precision lug group machining method

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Embodiment Construction

[0026] The technical solutions for realizing the object of the present invention are further described below through specific examples. It should be noted that the technical solutions claimed in the present invention include but are not limited to the following examples.

[0027] This embodiment provides a high-precision (tolerance zone within 0.05mm) numerical control machining method for lugs, such as Figure 1-5 The aerospace aluminum alloy structure shown has 3 lugs and 5 high-precision dimensions need to be processed, among which L1=39.20±0.05mm, L2=31.53±0.05mm, L3=107.61±0.05mm, L4=42.52±0.05 mm, L5=168.84±0.05mm.

[0028] The part is processed by a horizontal machine tool, and the installation direction of the part is perpendicular to the axis of the machine tool spindle. The rough machined part is first processed by an end mill to form a figure 2 For the lug size shown, a margin of △1=0.20mm is left on the side of each lug, and then the surface A is finished in plac...

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Abstract

The invention relates to an aviation structural part high-precision lug group machining method, and belongs to the technical field of machinery. The method comprises the following steps that firstly,a part lug group is subjected to rough machining and semi-fine machining through a milling cutter; then, a machining allowance is measured through a probe and is compared with a theoretical allowanceto form a program offset allowance P; and finally, the offset allowance P is automatically called by a program to finish high-precision lug group machining in place. According to the method, in the machining process, the manual intervention is not needed, high-quality machining on the high-precision lug group is rapidly completed, the machining efficiency is improved, the machining risk is reduced, the characteristics of simple operation method, reliable use, easy and wide use and the like are achieved, the machining quality of the part high-precision lug group can be effectively guaranteed, the rejection rate of parts is reduced, and therefore the cost is reduced.

Description

technical field [0001] The invention relates to a processing method of a lug set, in particular to a processing method of a high-precision lug set of an aeronautical structural part. Background technique [0002] With the continuous development of aeronautical technology, in recent years, aeronautical structures have increasingly shown an obvious trend of integration, compactness and precision, and aeronautical structural parts with complex features are widely used. These parts usually include lugs, deep grooves, etc. Complex structures such as fine holes, sealing grooves, etc., difficult positioning and clamping during processing, especially the processing of fine holes, lugs and lug grooves that have precise assembly coordination requirements, is a technical bottleneck that has long plagued the development of this part. [0003] For the processing of these complex and high-precision dimensions, the traditional processing method is to use an end mill or a disc mill to semi-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23C3/00B23C9/00B23Q17/22
CPCB23C3/00B23C9/00B23Q17/22
Inventor 杨吉飞谭伟民卢朝琴张安顺杜文军
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
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