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Fast repairing method of internal screw

A technology of internal thread and internal thread sleeve, which is applied in the field of quick repair of internal thread, can solve problems such as repairing difficult threaded holes, and achieve the effects of improving repair speed, reducing repair workload, and reducing workpiece scrapping

Inactive Publication Date: 2007-02-14
QISHUYAN LOCOMOTIVE & ROLLING STOCK WORKS CSR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the disadvantage that it is difficult to repair the threaded hole when methods such as blocking the hole and re-drilling, eccentric drilling, etc. cannot be used for repairing the threaded hole.

Method used

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  • Fast repairing method of internal screw
  • Fast repairing method of internal screw

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Experimental program
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Effect test

specific Embodiment 1

[0011] as attached figure 1 The internal thread quick repair method, first reaming the worn original threaded hole on the workpiece 1; then prepare the internal thread sleeve 2, the internal thread of the internal thread sleeve 2 is adapted to the original bolt, and the outer diameter of the internal thread sleeve is consistent with that on the workpiece The diameter of the reamed hole is matched; then the internal thread sleeve is placed in the reamed hole, and the mouth of the matching part is fixed by welding to prevent the internal thread sleeve from rotating or falling off relative to the workpiece. Before welding, the inner opening of the workpiece 1 and / or the outer opening of the internally threaded sleeve 2 may be chamfered to facilitate welding, and ground after welding.

specific Embodiment 2

[0012] as attached figure 2 The quick repair method of the internal thread, first reaming and tapping the worn original thread hole on the workpiece 1; then prepare the internal thread sleeve 2, the internal thread of the internal thread sleeve 2 is adapted to the original bolt, and the outer diameter of the internal thread sleeve is processed The thread matches the reaming and tapping on the workpiece; after the cooperation, a small threaded hole is axially arranged at the mouth of the thread and then a small screw is screwed in to prevent the internal thread sleeve 2 from rotating or falling off relative to the workpiece 1.

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Abstract

The present invention relates to mechanical repair technology, and is especially fast internal thread repairing process. The fast internal thread repairing process includes the following steps: 1. reaming the thread hole with worn thread; 2. machining internal thread sleeve with internal thread fitting the available screw bolt and outer diameter fitting the reamed hole; and 3. fixing the internal thread sleeve into reamed hole in the workpiece firmly. The said repair process can repair worn internal thread quickly and avoid discard of workpiece caused by worn internal thread.

Description

technical field [0001] The invention relates to the technical field of mechanical maintenance methods, in particular to a quick repair method for internal threads. Background technique [0002] In the field of machinery, many mechanical structural parts are connected by threads. During use, the bolts of the components are screwed in and out of the internal threaded holes, which is easy to cause mutual wear and tear, resulting in loosening or failure of the connection. Sometimes it is very difficult or expensive to repair the bolts. At this time, we can only consider repairing the internal threaded holes. For some internal threaded holes such as the fuselage and the casing, it is not possible to consider replacing the parts itself, and we can only try to repair the threaded holes. The hole is repaired, and methods such as plugging and re-drilling and ectopic drilling are used in the repair. However, this kind of re-drilling requires that the diameter of the bolt be increased ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/00
Inventor 邱国荣
Owner QISHUYAN LOCOMOTIVE & ROLLING STOCK WORKS CSR
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