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Honing machining method for carburizing hole of tappet guide sleeve of aero-engine

A technology for aero-engine and honing processing, which is applied to honing machine tools, metal processing equipment, and parts of grinding machine tools, and can solve the problems of large grinding force, unevenness, and low efficiency of carburizing holes in aero-engine tappet guide sleeves.

Active Publication Date: 2021-05-04
AVIC POWER ZHUZHOU AVIATION PARTS MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method for honing the carburized hole of the lifter guide sleeve of an aero-engine to solve the technical problems of low efficiency, large and uneven grinding force of the carburized hole of the lifter guide sleeve of the aero-engine in ordinary internal grinding machine processing

Method used

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  • Honing machining method for carburizing hole of tappet guide sleeve of aero-engine
  • Honing machining method for carburizing hole of tappet guide sleeve of aero-engine
  • Honing machining method for carburizing hole of tappet guide sleeve of aero-engine

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Embodiment 1

[0060] The honing method of the carburizing hole of the lifter guide sleeve of the aero-engine uses the CNC machining boring tool to grind the carburizing hole of the lifter guide sleeve to 0.215mm, install the lifter guide sleeve on the honing machine, and align the lifter For the carburized hole of the guide sleeve, the carburized hole is divided into four honing processes until the surface finish of the carburized hole is Ra≤0.02. The four honing processes include rough honing, semi-finishing honing, fine honing and super-finishing honing. And optimize the honing processing parameters, so that there is no burn or crack defect in the carburized hole of the tappet guide bush, and the internal surface finish of the carburized hole of the tappet guide bush is close to the mirror level;

[0061] The four-pass honing process includes the following steps:

[0062] S1: Carry out rough honing processing, the removal allowance is 0.15mm, the reciprocating single feed rate is 0.01mm, ...

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Abstract

The invention discloses a honing machining method for a carburizing hole of a tappet guide sleeve of an aero-engine. The honing machining method comprises the following steps that the carburizing hole of the tappet guide sleeve is machined by adopting a numerical control boring cutter to remove the allowance to 0.2-0.3 mm, the tappet guide sleeve is mounted on a honing machine, the carburizing hole of the tappet guide sleeve is aligned, the carburizing hole is honed for four times until the surface smoothness Ra of the carburizing hole is less than or equal to 0.02, the four times of honing machining comprise rough honing machining, semi-fine honing machining, fine honing machining and super-fine honing machining, and honing machining parameters are optimized, so that the carburizing hole of the tappet guide sleeve does not have burn and crack defects, and the internal surface smoothness of the carburizing hole of the tappet guide sleeve is close to the level of a mirror surface. The honing machining method for the carburizing hole of the tappet guide sleeve of the aero-engine has the advantages of being high in machining efficiency, even in grinding force, high in cooling frequency, sufficient in cooling and free of burn and crack defects, and the surface smoothness of the inner hole is close to the level of a mirror surface.

Description

technical field [0001] The invention relates to the field of aero-engine processing, in particular to a method for honing a carburized hole of a tappet guide sleeve of an aero-engine. Background technique [0002] As a heat treatment process for metal materials, carburizing and quenching makes the surface of the parts have higher hardness and better wear resistance after carburizing and quenching. It is widely used in the field of aero-engine manufacturing, but it is difficult to process. problem. The dimensional accuracy and surface quality of aero-engine parts are very high, but the parts are deformed after carburizing and quenching heat treatment, and the surface finish becomes poor, so the carburized holes need to be ground. Ordinary grinding wheels grind carburized holes, the heat of the grinding part is concentrated, and secondary burns are prone to occur. At the same time, the grinding force is large, the parts are unevenly stressed, and they are subjected to grindin...

Claims

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Application Information

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IPC IPC(8): B24B33/02B24B47/20B24B1/00B24B55/02B24B49/00
CPCB24B33/02B24B47/20B24B1/00B24B55/02B24B49/006
Inventor 汤涛杨鹏王熔罗思洁袁新华
Owner AVIC POWER ZHUZHOU AVIATION PARTS MFG
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