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Long and narrow girder honeycomb core part machining method

A technology of parts processing and honeycomb core, which is applied in the field of mechanical processing, can solve the problems of large tool wear, environmental pollution, and low processing efficiency, and achieve the effects of small deformation of parts, improved processing efficiency, and high material removal rate

Inactive Publication Date: 2019-02-05
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems that the parts are pulled up, overcut and scrapped during the processing of the narrow and long beam honeycomb core parts; the tool wear is large, the processing efficiency is low, and the environment is polluted, this patent provides a processing method for the narrow and long beam honeycomb core parts, which is used for Realize high-quality, high-efficiency, and low-pollution processing of long and narrow beam honeycomb core parts

Method used

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  • Long and narrow girder honeycomb core part machining method
  • Long and narrow girder honeycomb core part machining method
  • Long and narrow girder honeycomb core part machining method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as Figure 1 to Figure 4 , a kind of narrow and long class beam honeycomb core part processing method of the present invention, processing process is:

[0028] Hold the blank of the honeycomb core part 7 on the vacuum platform of the ultrasonic machine tool, use the ultrasonic disc cutter 1 to process the upper surface 2 of the part, and at the same time extend the processing surface to the boundary of the blank;

[0029] Turn the part 7 over and fix it, and rough and finish the lower surface 6 of the part;

[0030] A dagger knife 4 is used to axially cut out the contour of the honeycomb core part along the outer contour line of the part, so as to realize the processing of the narrow and long beam honeycomb core part 7 .

Embodiment 2

[0032] The blank of the long and narrow beam honeycomb core part 7 is held on the vacuum platform of the ultrasonic machine tool by adhesive tape;

[0033] Using a disc cutter 1, rough and finish machining the upper surface 2 of the long and narrow beam honeycomb core part, and extend the machined surface to the blank boundary, so as to increase the area for turning the part and ensuring the holding strength of the part;

[0034] On the basis that the surface 2 of the long and narrow beam honeycomb core part is processed, a wedge-shaped groove 3 is cut out on the contour edge of the surface 2 of the long and narrow beam honeycomb core part with a dagger knife 4;

[0035] Turn over and bond the upper surface 2 of the long and narrow beam honeycomb core part to the tooling 5 through adhesive tape, and process the lower surface 6 of the long and narrow beam honeycomb core part in place by using the disc cutter 1;

[0036] When using the dagger knife 4 to cut out the outline of th...

Embodiment 3

[0038] During the processing of the narrow and long beam honeycomb core part 7, when the dagger knife 4 is used to process the outer contour line of the narrow and long beam honeycomb core part 7, the honeycomb is cut out axially with one knife under the premise that the tip of the tool only exceeds the wedge tip of the wedge groove 3 Core part profile, to realize the processing of long and narrow beam honeycomb core parts.

[0039] When processing the profile of the part, a wedge-shaped groove is cut out on the edge of the profile with a dagger knife.

[0040] Wedge groove processing should prevent the interference between the tool and the tooling during processing.

[0041] Wedge groove processing should ensure the holding strength of the parts.

[0042] Wedge-shaped groove processing should ensure the positioning accuracy and strength of the parts.

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Abstract

The invention discloses a long and narrow girder honeycomb core part machining method. The method comprises the steps that an ultrasonic machine tool is adopted, a honeycomb core blank is fixedly clamped to a vacuum platform, the upper profile of the part is subjected to rough machining and fine machining through a cutter disk, and the machined surface of the part is expanded to the boundary of the blank; and a wedge groove is formed in the edge of the outline of the upper profile by adopting a dagger through cutting, the part is turned over so that the lower profile of the part can be machined, and the outline of the honeycomb core part is obtained axially through cutting by adopting the dagger along the outline line of the part at a time with the nose of the dagger only exceeding the topof the wedge. According to the long and narrow girder honeycomb core part machining method, rough machining and fine machining are directly conducted on the upper profile and the lower profile of thepart, the machined surface of the part is expanded to the boundary of the blank, the turning positioning area is ensured, and the fixed clamping strength is improved; the wedge groove is formed in the upper profile of the part through cutting, part turning positioning is facilitated, machining interference is prevented, the fixed clamping risk is reduced, pulling up and overcut of the part are avoided, and the machining quality is ensured; and one-time cutting machining is conducted on the outline of the part through the ultrasonic dagger, the material removal rate is high, part deformation is low, and the part machining efficiency is improved.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to the ultrasonic processing technology of honeycomb core. Background technique [0002] As a porous structure material, honeycomb core has excellent properties such as small mass, high specific strength, high specific stiffness, corrosion resistance, and impact resistance. Since its inception, it has been favored by the aerospace industry. Its components are thin and short aramid fibers with strong toughness; its axial orthogonal plane is easily deformed by force, and its machinability is poor. It is a typical difficult-to-machine material. At present, most of the honeycomb core parts are used in the interlayer position of the wing of the aircraft, and the size of the parts is different in different positions. In the traditional processing of the honeycomb core parts, the shape and size of the parts are not considered, and the honeycomb is cut by a disc cutter. After the upper...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 陈李学高清袁信满周进丁苏煜盛雷宋俊志
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
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