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Perforation method and perforation apparatus

一种穿孔装置、振动装置的技术，应用在焊接设备、激光焊接设备、金属加工设备等方向，能够解决难以可靠地防止激光反射到内壁、内壁损坏等问题

Inactive Publication Date: 2009-02-04
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the related art, disadvantageously, it is difficult to reliably prevent laser light from being reflected to the inner wall
[0009] In the related art described in Japanese Unexamined Patent Publication No. 2001-526961 (PCT), part of the scattered laser light may reach the inner wall, and therefore, the inner wall may be damaged due to the output of the laser light

Method used

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  • Perforation method and perforation apparatus
  • Perforation method and perforation apparatus
  • Perforation method and perforation apparatus

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Embodiment Construction

[0030] According to the present invention, preferred embodiments of the perforating method and device are described in detail below with reference to the accompanying drawings.

[0031] figure 1 is an enlarged longitudinal sectional view showing the main part of the end portion of the fuel injection nozzle 1 into which the perforating device 10 according to the first embodiment of the present invention is inserted. The perforating device 10 includes a laser emitting mechanism (not shown), an oscillating mechanism having an ultrasonic oscillator 12, and a zirconia ball 16 (filler) inserted into the end and driven by a probe 14 of the ultrasonic oscillator 12 support.

[0032] as in figure 1 As shown in , the end portion of the fuel injection nozzle 1 has a hollow structure. In fuel injection mechanisms, the valve is inserted into the hollow end.

[0033] The laser emitting mechanism may emit laser light whose output is sufficient to form the injection hole 2 through the w...

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PUM

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Abstract

The invention discloses a perforation method and an perforation apparatus, in which a hollow member of a fuel injection nozzle (1) is filled with a filler such as a zirconia ball (16), and a laser light (L) is applied to the hollow member to form an injection hole (2) while vibrating the zirconia ball using an ultrasonic vibrator (12). After the injection hole (2) is formed, the laser light (L) is introduced through the injection hole (2) to the inside of the fuel injection nozzle (1), and thereby is applied to the vibrated zirconia ball (16).

Description

technical field [0001] The present invention relates to a perforation method for forming a through hole in a wall of a hollow member by laser irradiation, and an apparatus for perforation. Background technique [0002] exist image 3 shows the end of the fuel injection nozzle 1 to be mounted on an automobile. Such as image 3 The end portion of the fuel injection nozzle 1 shown in has a hollow structure. [0003] A plurality of injection holes 2 extend through the wall of the end of the fuel injection nozzle 1 . In recent years, such holes have been formed by laser L. [0004] The end portion is irradiated with laser light L from the outside. Thus, the walls of the ends are melted by the laser L from the outside to the inside. Finally, the inner wall surface is melted to form the injection hole 2 . [0005] After the inner wall is melted to form the injection hole 2, the irradiation with the laser light L is continued even for a short time, and the laser light L reaches...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/38B23K26/18B23K26/60B23K26/382B23K26/70
CPCB23K26/388B23K26/18B23K26/389
Inventor 小林崇根本章宏山岸弘昭中岛克幸
Owner HONDA MOTOR CO LTD