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Process method for overhauling main bearing hole of diesel engine cylinder block

A process method and main bearing technology, which is applied in the direction of machines/engines, mechanical equipment, engine components, etc., can solve the problems of main bearing holes of the machine body that cannot be repaired, scrapped, and have a short service life, so as to avoid machine body scrapping, obvious economic benefits, The effect of reducing operational failures

Inactive Publication Date: 2009-11-18
CRRC QISHUYAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problems that the main bearing hole of the engine body cannot be repaired and is scrapped, and the service life is short, the invention provides a maintenance process method for the main bearing hole of the diesel engine body

Method used

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  • Process method for overhauling main bearing hole of diesel engine cylinder block
  • Process method for overhauling main bearing hole of diesel engine cylinder block

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Embodiment Construction

[0010] The present invention will now be described in further detail in conjunction with the accompanying drawings and preferred embodiments.

[0011] figure 1 It is a schematic diagram of the structure of the present invention. Use a grinder to grind the Huff surface 2 of the main bearing cap of the body to 0.3∽0.5mm, and grind it to 0.6∽0.8mm if the deformation is serious. Install the main bearing cap on the body and tighten it according to the technical requirements. For the main bearing bolts, use a CNC floor boring machine to process the body main bearing hole 1, first adjust the position of the body main bearing hole 1 on the floor boring machine. Align the center of the first hole and the last hole with a dial indicator on the semicircle of the main bearing seat of the first hole and the last hole of the main bearing hole 1 of the body, fix the body after alignment, and adjust it again to prevent The position of the body changes after being compressed. Adjust the bori...

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Abstract

The invention relates to a process method for overhauling a main bearing hole of a diesel engine cylinder block. The half surface of a main bearing cap of the cylinder block is ground 0.3 to 0.5mm by a grinder, and the half surface with serious deformation is ground 0.6 to 0.8mm; the main bearing cap is provided with the cylinder block, a main bearing bolt is fastened, and the main bearing hole of the cylinder block is processed by a numerical control floor type borer; and centers of a first hole and a last hole are aligned on a main bearing pedestal semicircle of the first hole and the last hole of the main bearing hole of the cylinder block by a dial gauge, the cylinder block is fixed after the alignment, and a boring machine is adjusted to the center of the main bearing pedestal semicircle, so that the boring machine is moved 0.1mm toward the direction of a main bearing pedestal to the utmost. The overhauling process method can obviously improve the coaxiality of the main bearing hole of the cylinder block and the overhauling quality of bores, and reduces the operation trouble of a diesel engine. For the cylinder block of which the main bearing hole is seriously deformed, the overhauling process method can avoid scrapping the cylinder block, prolongs the service life of the cylinder block, and has obvious economic benefit.

Description

technical field [0001] The invention relates to an overhaul process method, in particular to an overhaul process method for a main bearing hole of a diesel engine body. Background technique [0002] The main bearing hole wear of the diesel engine body is a common form of body failure. Due to the wear of the main bearing hole, the coaxiality of the main bearing hole of the body is out of tolerance, the hole diameter becomes larger, and the body cannot be used normally. Sometimes the diesel engine fails, such as the diesel engine rolling tile , resulting in severe deformation of the main bearing hole of the body, and the main bearing hole of the body cannot be repaired and scrapped. The economic value of the main shaft of a diesel engine body is relatively high, and the cost is greatly increased due to damage, and the economic benefit is obviously reduced. Contents of the invention [0003] In order to overcome the defects that the main bearing hole of the engine body canno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F7/00
Inventor 高福斌
Owner CRRC QISHUYAN CO LTD
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