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

A processing method and technology of concentric circles, applied in metal processing equipment, metal processing mechanical parts, manufacturing tools, etc., can solve problems such as processing can not meet the requirements

Inactive Publication Date: 2015-05-20
GUIZHOU LIYANG INT MFG
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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

Method used

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

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Embodiment Construction

[0014] The technical solution of the present invention is further described below, but the scope of protection is not limited to the description.

[0015] Such as Figure 1~4 The processing method of the concentric circles with the roughness of the groove bottom surface Ra0.1~Ra0.4 shown, the steps are as follows: first, use a conventional cutting tool to perform concentric rough turning on the part 1 to form a rough machining groove 11, and rough machining the concave groove 11. A margin of 0.02 mm is reserved on the upper wall of the groove 11, and then a tool 3 made of titanium alloy material is selected as the tool material to carry out concentric circle finish turning on the groove to form a finishing groove 12, and at the same time, use 20~ The 60Bar coolant sprays the turning port, and the tool residence time is 30-120s.

[0016] In order to meet the processing requirements of titanium alloys and reduce the cost of cutting tools, through experiments, cutting tool mater...

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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...

Claims

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Application Information

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IPC IPC(8): B23B1/00
CPCB23B1/00B23Q11/10B23Q11/1061
Inventor 龚德俊夏建民胡林荣张学平
Owner GUIZHOU LIYANG INT MFG
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