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Machining method for cylinder bores of aluminum alloy cylinder block with simulating cylinder cover

A processing method and technology of aluminum alloy, applied in the field of engine cylinder block, can solve the problems of the overall structural limitation of the engine cylinder block, poor heat dissipation of cast iron, and inconsistent cylinder hole deformation, so as to reduce microscopic deformation, reduce weight, and improve uniformity Effect

Inactive Publication Date: 2017-06-13
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the heat dissipation of cast iron is also poor, so the wall thickness between the cylinder holes cannot be reduced, and the overall structure of the engine block is limited.
And the cylinder bore often has the problem of inconsistent deformation during processing and assembly

Method used

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  • Machining method for cylinder bores of aluminum alloy cylinder block with simulating cylinder cover
  • Machining method for cylinder bores of aluminum alloy cylinder block with simulating cylinder cover
  • Machining method for cylinder bores of aluminum alloy cylinder block with simulating cylinder cover

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0022] see Figure 1 to Figure 3 , the invention provides a cylinder hole processing method of an aluminum alloy cylinder block with a simulated cylinder head, which comprises the following steps:

[0023] 1) Preliminary machining of the cylinder bore, rough boring of the cylinder bore 4, and then fixing the simulated cylinder head 2 to the cylinder head installation position of the cylinder block 1 through the bolt 3, and then semi-finishing and fine boring of the cylinder bore 4 , and then loosen the bolt 3, and unload the simulated cylinder head 2;

[0024] 2) Cylinder bore coating pretreatment, using mechanical processing to process regular grooves on the bore wall of the cylinder bore 4 to enhance the firmness of the coating material on the bore wall of the cylinder bore, the grooves The width and depth can be set as required;

[0025] 3) Cylinder hole coatin...

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Abstract

The invention discloses a machining method for cylinder bores of an aluminum alloy cylinder block with a simulating cylinder cover. The machining method comprises the following steps that 1), rough boring treatment is conducted on the cylinder bores, then the simulating cylinder cover is fixed to the cylinder cover mounting position of the cylinder block through bolts, then semi-fine boring and fine boring treatment are conducted on the cylinder bores, and then the simulating cylinder cover is unloaded; 2), regular trenches are machined in the bore walls of the cylinder bores, and the firmness of a coating material on the bore walls of the cylinder bores is enhanced; 3), the alloy material in the molten state is sprayed into the trenches and the bore walls of the cylinder bores, and an alloy coating is formed; 4), surface treatment is conducted on the cylinder bore alloy coating obtained after coating treatment is conducted through machining or high-pressure water washing, then the simulating cylinder cover is fixed to the cylinder cover mounting position of the cylinder body through the bolts, then the alloy coating is subjected to honing, and finally the simulating cylinder cover is unloaded. By the adoption of the machining method, the whole weight of the cylinder block can be reduced, the radiating capacity and wear resistance are improved, and the cylinder bores are consistent in deformation during machining and assembly.

Description

technical field [0001] The invention relates to an engine cylinder block, in particular to a cylinder hole processing method of an aluminum alloy cylinder block with a simulated cylinder head. Background technique [0002] At present, the cylinder bores of most traditional aluminum alloy engine blocks are put into cast iron cylinder liners during casting to enhance the rigidity and wear resistance of the cylinder bores. In the prior art, the cylinder bore machining process is roughly as follows: cylinder bore rough boring, cylinder bore semi-finish boring, cylinder bore fine boring, cylinder bore honing. The traditional engine block is equipped with cast iron cylinder liners, and the weight of cast iron cylinder liners is relatively heavy. Moreover, the heat dissipation of cast iron is also poor, so the wall thickness between the cylinder holes cannot be reduced, and the overall structure of the engine block is limited. And the problem of inconsistent deformation often occ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00
Inventor 李红尚泉城弘毅张云平林兆富白恩霖
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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