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Machining Method of Micro-shaped Inner Hole of Fuel Injection Nozzle

A processing method and technology for fuel injection nozzles, which are applied in the field of processing small irregular-shaped inner holes of fuel injection nozzles, can solve the problems of low processing efficiency and processing accuracy, short tool life, large burrs, etc., so as to improve processing quality and production efficiency. , the effect of reducing processing costs

Active Publication Date: 2022-06-07
CHINA HANGFA SOUTH IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for processing the tiny special-shaped inner hole of the fuel injector to solve the technical problems of low processing efficiency and precision, large burrs after processing, and short tool life in the existing processing methods.

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  • Machining Method of Micro-shaped Inner Hole of Fuel Injection Nozzle
  • Machining Method of Micro-shaped Inner Hole of Fuel Injection Nozzle
  • Machining Method of Micro-shaped Inner Hole of Fuel Injection Nozzle

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Embodiment Construction

[0034] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered below.

[0035] refer to Figure 1-Figure 7 , the preferred embodiment of the present invention provides a method for processing a tiny special-shaped inner hole of a fuel injection nozzle. The special-shaped inner hole includes a conical hole 101 and a circular arc hole 102 that are sequentially arranged and communicated along the axis. The processing method includes the following steps:

[0036] The first drill 20 is used to perform rough drilling on the workpiece 10 to machine the through hole 103 .

[0037] The first section of the through hole 103 is milled and semi-finished by using the tapered milling cutter 30 to machine the tapered semi-finished hole 104 .

[0038] The tapered semi-finished hole 104 is milled and finished by using the first finishing kn...

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Abstract

The invention discloses a method for machining tiny special-shaped inner holes of an oil injector, which comprises the following steps: using a first drill bit to perform rough drilling on a workpiece to process a through hole. Semi-finish the first section of the through hole with a cone milling cutter to create a tapered semi-finish hole. Use the first finishing tool to mill and finish the tapered semi-finished hole to produce a circular arc hole. Use the second drill to rough drill the second section of the through hole to create a rough hole with an arc. Use a ball end milling cutter to perform milling and semi-finishing on the arc rough hole to process the arc semi-finishing hole. Use the second finishing tool to mill and finish the arc semi-finishing hole to process the arc hole. When the processing method of the present invention is adopted, the processing efficiency and processing accuracy of tiny special-shaped inner holes can be greatly improved, and the requirements of modern aero-engines on the inner walls of fuel nozzles can be met; the inner walls of conical semi-fine holes and arc semi-fine holes can be effectively removed Eliminate processing defects such as burrs, thereby improving processing quality.

Description

technical field [0001] The invention relates to the technical field of small hole processing, in particular, to a method for processing a small irregular-shaped inner hole of a fuel injection nozzle. Background technique [0002] As the heart of an aircraft, aero-engine is known as the "flower of industry". Its quality directly affects the performance, reliability and economy of the aircraft, and is an important manifestation of a country's scientific, technological, industrial and national defense strength. Among them, the engine fuel injector is the core component of the aero-engine. Its function is to atomize (or vaporize) the fuel, accelerate the formation of the mixture, ensure stable combustion and improve the combustion efficiency, and the processing of the inner wall structure of the engine fuel injector directly affects the The efficiency of fuel combustion, the new generation of engines requires higher combustion efficiency and power density, which puts forward hig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P17/00
CPCB23P17/00
Inventor 蔡荣宾吴时盛赵聪敏郝艳春易林峰李剑飞
Owner CHINA HANGFA SOUTH IND CO LTD