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Method for repairing spline abrasion

A spline and spline pair technology, applied in the field of repair, can solve the problems of wasting labor, cost, and high cost, and achieve the effects of long service life, large strength margin, and reduced scrap rate of worn parts

Inactive Publication Date: 2016-07-13
HARBIN DONGAN ENGINE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since splines are often designed integrally with transmission components, reworking requires a lot of labor and cost, resulting in high repair and refurbishment costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0016] The internal spline at the left input gear of a certain helicopter transmission system transmits the power of the rear input gear to the left input gear through the spline shaft, and the power transmission is realized uniformly by the left input gear. It is often found that the internal spline is worn during renovation, resulting in excessive fit clearance and cannot be used any longer. The specific steps to repair it are:

[0017] 1. Decompose the worn spline pair;

[0018] 2. Analyze the cost of the two parts of the inner and outer splines, namely the left input gear and the spline shaft. The cost of the left input gear is relatively large, so take the left input gear with a large cost and measure the cost of the inner spline after it is worn out. The actual tooth thickness is at least 1.9mm (2.4mm required by the drawing);

[0019] 3. According to the measured tooth thickness value, the strength calculation is carried out. The result shows that the spline can still...

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PUM

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Abstract

The invention relates to a method for repairing spline abrasion.By means of cost analyzing, measuring and calculating, parts with large cost are preferably kept, parts with small cost are prepared, fewer parts can be machined, and periods and cost are saved.By means of the method, the abraded part scrappage of a mechanical device can be effectively reduced during repairing, and manpower, material resources and cost can be saved.

Description

technical field [0001] The invention relates to a repair method, in particular to a repair method for spline wear, which can shorten the repair cycle and save costs. Background technique [0002] Among many mechanical devices, spline is a commonly used transmission structure, which is generally used for positioning and torque transmission. With the prolongation of the working time, due to the splines bearing torque, the splines will inevitably wear out, resulting in the increase of the fit gap between the splines, the decrease of positioning and transmission accuracy, and the increase of vibration, which will cause the entire mechanical The working performance of the device decreases, and in severe cases, it directly leads to the failure of the mechanical device to work normally. When the splines are worn out, in order to avoid the degradation of the working performance of the mechanical device, it is often necessary to scrap the parts beyond the wear limit and replace them...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16D1/10
CPCF16D1/10
Inventor 宁涛李宏冯磊那国雨徐海英徐晶莹聂必成欧阳可平陈婷王伟斌
Owner HARBIN DONGAN ENGINE GRP
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