Engine connection rod remanufacturing method

An engine connecting rod and remanufacturing technology, which is applied in the field of engine remanufacturing, can solve the problems of difficulty in repairing distortion and deformation, out of tolerance, bending deformation of the rod body, etc., and achieves the effect of ensuring reliability.

Inactive Publication Date: 2013-09-25
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide a method for remanufacturing the engine connecting rod, so as to solve the out-of-tolerance phenomenon of relevant important dimensional parameters in the toothed connecting rod after engine replacement, and the bending deformation and twisting of the rod body at the same time Deformation causes technical problems that are difficult to repair

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A method for remanufacturing an engine connecting rod, comprising the following steps:

[0048] (1) Repair the defects on the tooth profile surface of the connecting rod body and the connecting rod cover with oilstone respectively, the defects include the high bumps and burrs on the tooth profile;

[0049] (2) Based on the original tooth shape, the milling method is used to remove a processing amount on the original tooth shape, so as to repair the defects such as bumps and wear on the tooth shape, and reserve reasonable processing for the subsequent big head hole processing margin;

[0050] (3) Use connecting rod bolts to assemble the connecting rod body and connecting rod cover that have completed tooth shape repair;

[0051] (4) Take out the small head hole bushing of the connecting rod on the press, deburr and clean the bottom hole of the small head hole, and press another bush into the small head hole on the press;

[0052] (5) Simultaneously process the bushing ...

Embodiment 2

[0059] A method for remanufacturing an engine connecting rod, comprising the following steps:

[0060] (1) Use a file to repair the defects on the tooth profile surface of the connecting rod body and the connecting rod cover, such defects include high bumps, burrs, etc. on the tooth profile;

[0061] (2) Based on the original tooth shape, the broaching method is used to remove a processing amount on the original tooth shape, so as to repair the defects such as bumps and wear on the tooth shape, and reserve reasonable space for subsequent big head hole processing machining allowance;

[0062] (3) Use connecting rod bolts to assemble the connecting rod body and connecting rod cover that have completed tooth shape repair;

[0063] (4) Take out the small head hole bushing of the connecting rod on the press, deburr and clean the bottom hole of the small head hole, and press another bush into the small head hole on the press;

[0064] (5) Use a coordinate boring machine to process...

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PUM

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Abstract

The invention discloses an engine connection rod remanufacturing method and belongs to the technical field of engine remanufacture. The method includes maintaining defects on the tooth-shaped surfaces of a connection rod body and a connection rod cover, removing a machining quantity of an original tooth shape with the original tooth shape as the reference, utilizing a connection rod bolt to assemble the connection rod body and the connection rod cover which are subjected to tooth shape maintaining, replacing a small-end-hole bush, boring the bush in a small end hole and a large end hole of the connection rod, disassembling the connection rod bolt, cutting a plane on the connection rod cover in contact with the head of the connection rod bolt, cleaning the connection rod body and the connection rod cover to remove scrap iron and grease on the surface and in the holes, utilizing another connection rod bolt to assemble the cleaned connection rod body and the cleaned connection rod cover according to a pairing mark and weighing and grouping the assembled connection rod. By means of the method, the original product accuracy of the connection rod is recovered, reliable work of the connection rod can be ensured, and remanufacture of the old engine connection rod is achieved.

Description

technical field [0001] The invention belongs to the technical field of engine remanufacturing, and in particular relates to a remanufacturing method of an engine toothed connecting rod. Background technique [0002] Remanufacturing is an industry that implements high-tech repair and transformation of waste products. It is aimed at damaged or about to be scrapped parts. On the basis of performance failure analysis, life evaluation and other analysis, remanufacturing engineering design is carried out. Technology to restore the shape and precision of the workpiece, so that the quality of remanufactured products can reach or exceed that of new products. [0003] Engine remanufacturing is different from general engine manufacturing and engine overhaul, but a brand new maintenance method. Engine remanufacturing is the process of restoring an engine that has entered a certain life cycle into a new engine according to the remanufacturing process. [0004] The engine connecting rod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/00
Inventor 韩继胜王圣斌丁韬孙占昌杨生明王旭李新国
Owner WEICHAI POWER CO LTD
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