Processing method for concentric circle with groove bottom surface roughness ranging from Ra 0.1 to Ra 0.4

Abstract

The invention provides a processing method for a concentric circle with a groove bottom surface roughness ranging from Ra 0.1 to Ra 0.4. The method comprises the steps that: firstly, concentric circle rough turning processing is carried out on a part by a common cutter, a rough processed groove is formed, and a 0.02 mm allowance is reserved on the upper wall of the rough processed groove; secondly, concentric circle fine turning processing is carried out on the groove by a cutter which is made from one of the cutter materials selected from cube boron carbide, H13A, WSN, and 1005 titanium alloy, a fine processed groove is formed, meanwhile 20-60 Bar cooling liquid is utilized to spray on a turning opening, and the retention time of the cutter ranges from 30 s to 120 s. The requirement of the part for the concentric circle with the groove bottom surface is met, and the roughness of the groove bottom surface is guaranteed. Due to the fact that the groove bottom is a concave space, the factors such as difficult chipping and insufficient cooling exist in mechanical processing, as a result the surface roughness of the bottom surface is difficult to reach below Ra 0.4.

Description

technical field [0001] The invention belongs to a turning method in mechanical processing, in particular to a processing method of concentric circles with a groove bottom surface roughness Ra0.1-Ra0.4. Background technique [0002] In the connection of submarine communication optical cables, the repeater protection device needs to be sealed and waterproof. The device needs to withstand the deep pressure of 8000 meters of seabed, and at the same time, it must ensure an uninterrupted service life of 25 years. This requires the surface of its parts to have the characteristics of "sealing". The customer's requirement for the surface of the part is the texture of concentric turning, and the surface roughness is less than Ra0.4. At the same time, the surface of the part is required to be free of any scars under the observation of a magnifying glass of 50 times. The processing of the existing technology cannot meet the requirements. Contents of the invention [0003] In order to...

AI Technical Summary

Problems solved by technology

The customer's requirement for the surface of the part is the texture of concentric turning, and the surface roughness is less than Ra0.4. At the same time, the surface of the part is required to be free of any scars under the observation of a magnifying glass of 50 times. The processing of the existing technology cannot meet the requirements.

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