Pneumatic grinding tool and grinding method used for high-pressure oil pipe spherical sealing surface

Abstract

The invention provides a pneumatic grinding tool and a grinding method used for a high-pressure oil pipe spherical sealing surface. A joint is arranged at the end part of a high-pressure oil pipe, thespherical sealing surface is arranged at the most front end of the joint, the pneumatic grinding tool comprises a threaded joint, a threaded cap and a grinding head, wherein the threaded joint is connected to the joint of the high-pressure oil pipe through threads, a through hole is formed in the center, the grinding head is arranged in the through hole, the front end of the grinding head is in contact with the spherical sealing surface, the threaded cap is connected to the rear portion of the threaded joint through threads in a screwed mode to make the grinding head and the spherical sealingface be tightly attached to each other, and an air impact wrench is connected with the grinding head to drive the grinding head to carry out rapid grinding and repairing on the spherical sealing surface. The pneumatic grinding tool is used for carrying out rapid pneumatic grinding repair on the spherical sealing surface of the high-pressure oil pipe, and has the advantages that the structure is simple, operation is convenient, positioning is accurate, the operation requirement is low, movement is flexible, the requirements of operation safety are met, the operation difficulty is reduced, thegrinding precision is improved, and the repair period is shortened.

Description

technical field [0001] The invention relates to a grinding process equipment and method, in particular to a pneumatic grinding tool and a grinding method for a spherical sealing surface of a high-pressure oil pipe, belonging to the technical field of mechanical manufacturing. Background technique [0002] The high-pressure fuel of the marine diesel engine is delivered to the fuel injector through the high-pressure oil pipe, and the injection is finally completed. The quality of the fuel injection process directly determines the overall performance of the diesel engine, so the high-pressure fuel pipe is one of the most important parts of the diesel engine. Since the delivery pressure of high-pressure fuel is as high as 800bar, this places extremely high requirements on the installation and sealing of high-pressure fuel pipes. see figure 1 and figure 2 , the end of the high-pressure oil pipe 01 is provided with a joint 02, the front end of the joint 02 is a spherical seali...

AI Technical Summary

Problems solved by technology

Due to the high hardness of the material of the spherical sealing surface 03 of the high-pressure oil pipe 01, it is difficult to achieve a satisfactory repair effect by traditional manual grinding and repairing methods. Therefore, the grinding and repairing process of the spherical sealing surface 03 has always been a difficult problem in the industry.

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