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Reproducing method of main bearing hole of engine cylinder block assembly

A technology for engine cylinders and main bearings, which is used in manufacturing tools, honing machine tools, machine tools suitable for grinding workpiece planes, etc. The effect of mass production, improving processing efficiency and simple process

Active Publication Date: 2013-12-18
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of brush plating to restore the size of the main bearing hole is restricted by the bonding force between the coating and the body, and the coating is prone to fall off during subsequent processing and use, which has major hidden dangers; and the brush plating process is complicated, especially for the engine cylinder block. A large and complex part, it is difficult to achieve industrial mass production

Method used

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  • Reproducing method of main bearing hole of engine cylinder block assembly
  • Reproducing method of main bearing hole of engine cylinder block assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The method for remanufacturing the main bearing hole of the engine cylinder block assembly comprises the following steps:

[0033] (1) Machining of the joint surface of the main bearing seat of the cylinder block: Based on the joint surface of the main bearing seat of the cylinder block, use a surface grinder and tooling grinding to remove the processing amount of 0.02mm on the joint surface of the main bearing seat of the cylinder block, and ensure that the cylinder The shape and position tolerance requirements of the joint surface of the body main bearing seat;

[0034] (2) Machining of the joint surface of the main bearing seat of the crankcase: taking the joint surface of the main bearing seat of the crankcase as the benchmark, use a surface grinder and tooling to grind the joint surface of the main bearing seat of the crankcase to remove the processing amount of 0.02mm;

[0035] (3) Assembly: Assemble the cylinder block and crankcase according to the assembly seque...

Embodiment 2

[0038] The method for remanufacturing the main bearing hole of the engine cylinder block assembly comprises the following steps:

[0039](1) Machining of the joint surface of the main bearing seat of the cylinder block: Based on the joint surface of the main bearing seat of the cylinder block, use a surface grinder and tooling grinding to remove the processing amount of 0.05mm on the joint surface of the main bearing seat of the cylinder block, and ensure that the cylinder The shape and position tolerance requirements of the joint surface of the body main bearing seat;

[0040] (2) Machining of the joint surface of the main bearing seat of the crankcase: taking the joint surface of the main bearing seat of the crankcase as a reference, the machining amount of 0.05mm is removed by surface grinder and tooling grinding on the joint surface of the main bearing seat of the crankcase;

[0041] (3) Assembly: Assemble the cylinder block and crankcase according to the assembly sequence...

Embodiment 3

[0044] The method for remanufacturing the main bearing hole of the engine cylinder block assembly comprises the following steps:

[0045] (1) Machining of the joint surface of the main bearing seat of the cylinder block: taking the joint surface of the main bearing seat of the cylinder block as a reference, use a surface grinder and tooling grinding to remove the processing amount of 0.10mm on the joint surface of the main bearing seat of the cylinder block, and ensure that the cylinder The shape and position tolerance requirements of the joint surface of the body main bearing seat;

[0046] (2) Machining of the joint surface of the main bearing seat of the crankcase: taking the joint surface of the main bearing seat of the crankcase as a reference, use a surface grinder and tooling to grind away the processing amount of 0.10mm on the joint surface of the main bearing seat of the crankcase;

[0047] (3) Assembly: Assemble the cylinder block and crankcase according to the assem...

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Abstract

The invention discloses a reproducing method of a main bearing hole of an engine cylinder block assembly, belongs to the field of engine reproducing technologies, and is characterized in that a combination surface of a main bearing seat of a cylinder block is taken as a reference, an amount of finish of 0.02-0.10 mm is eliminated from the combination surface of the main bearing seat of the cylinder block, and requirements of a form and location tolerance of the main bearing seat of the cylinder block are ensured; a combination surface of a main bearing seat of a crankcase is taken as a reference, an amount of finish of 0.02-0.10 mm is eliminated from the combination surface of the main bearing seat of the crankcase; the cylinder block and the crankcase are assembled together through a main bearing bolt so as to form a cylinder block assembly; each main bearing hole of the engine cylinder block assembly is honed, and honing of the main bearing holes needs to be synchronously carried out so as to ensure each technological requirement of the main bearing holes of the engine cylinder block assembly. The reproducting method has the advantages of simple process, no potential hidden trouble of a brush plating manner, and capability of realizing reproduction of the engine cylinder block assembly with the problem of the size out-of-tolerance of the main bearing holes.

Description

technical field [0001] The invention belongs to the technical field of engine remanufacturing, and in particular relates to a method for remanufacturing a main bearing hole of an engine cylinder body assembly. Background technique [0002] 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. [0003] The main bearing hole is the key part of the engine cylinder block assembly. The dimensional accuracy, roundness, cylindricity, coaxiality and surface roughness of the hole are all highly required, which affects the performance of the entire engine. The size of the main bearing hole of the engine cylinder block assembly is out of tolerance. It is a common defect in the old engine cylinder block. If this defect is not repaired, the engine oil pressur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24B7/10B24B33/02
Inventor 韩继胜王圣斌杨生明孙占昌王伟强李祖帅
Owner WEICHAI POWER CO LTD
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