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Device for checking meshing clearance of central transmission bevel gear

A bevel gear, central technology, applied in the field of aero-engine assembly, can solve the problems of cumbersome and inefficient adjustment of the loading force, and achieve the effects of precise controllable axial loading force of bevel gears, good repeatability, and easy operation

Active Publication Date: 2021-03-12
AECC SICHUAN GAS TURBINE RES INST
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Although this loading method can load relatively accurate axial force, the adjustment of the loading force is cumbersome and inefficient

Method used

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  • Device for checking meshing clearance of central transmission bevel gear
  • Device for checking meshing clearance of central transmission bevel gear
  • Device for checking meshing clearance of central transmission bevel gear

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Embodiment Construction

[0022] The central transmission device is the main transmission device for power extraction of the jet aircraft engine. It is usually installed on the front journal of the compressor. It has the characteristics of high power transmission, high speed, and large impact load. The meshing clearance value of the central transmission bevel gear is unreasonable or Bad meshing marks will directly lead to incorrect meshing of bevel gears, which will damage or break the teeth when the engine is started or working.

[0023] At present, in the practice of aero-engine assembly, the coloring inspection of spiral bevel gears is the only way to ensure that the tooth surface contact marks of the gear pair under the rated load are distributed symmetrically along the pitch line along the entire length of the tooth width with the expected coloring marks. The central transmission bevel gear meshing clearance inspection device generally has engineering problems such as complex structure, poor repeat...

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Abstract

The invention belongs to the field of aero-engine assembly, and particularly relates to a device for checking the meshing clearance of a central transmission bevel gear. The device comprises a supporting seat, a first axial force loading mechanism, a second axial force loading mechanism, a third axial force loading mechanism, a central shaft, a centering seat, a multi-path pressure junction box and a sensor pressure display instrument, wherein the first axial force loading mechanism, the second axial force loading mechanism and the third axial force loading mechanism are arranged on the supporting seat, micro pressure sensors are arranged in the three axial force loading mechanisms, the central transmission driving bevel gear is installed on the centering seat, and the central shaft is installed on the central transmission driven bevel gear. The first axial force loading mechanism and the second axial force loading mechanism are respectively connected with two ends of the central shaftthrough bull eye bearings; the third axial force loading mechanism is connected with the centering seat through a bull eye bearing; and the micro pressure sensor is electrically connected with the multi-path pressure junction box and the sensor pressure display instrument. The axial loading force of the bevel gear can be accurately controlled.

Description

technical field [0001] The invention belongs to the technical field of aero-engine assembly, and in particular relates to a device for checking the meshing gap of a central transmission bevel gear. Background technique [0002] Assembling work is a late process in the manufacturing process of aero-engines, occupies a very important position in the entire production process, and is an independent production stage. The engine assembly process is not a simple accumulation process of parts (groups), but is carried out according to the specified technical standards, technical requirements and a series of process procedures and quality control procedures of different complexity. These procedures are implemented through the use of special or general tooling fixtures. Whether the design of tooling and fixtures for aero-engine assembly is scientific and reasonable directly affects the assembly progress of the engine, and is also related to the performance, life and reliability of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B5/14G01B5/00
CPCG01B5/003G01B5/14
Inventor 王力付玄赵文馨闫文吉
Owner AECC SICHUAN GAS TURBINE RES INST
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