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Machining method for abrasive flow deburring of bushing-like components

A processing method and burr technology, applied in the field of mechanical processing technology, can solve the problems of difficult to observe the burr of the cross hole in the inner cavity, the burr is not clean, and the performance stability of the valve is affected, so as to achieve the improvement of the pass rate, the surface roughness and the cylindrical shape The effect of improved degree and stable quality

Inactive Publication Date: 2016-04-20
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The deburring of the inner cavity of the bushing parts in the valve has always been a technical bottleneck in production. For a long time, manual grinding has been used to remove the burrs. To, directly affect the stability of valve performance

Method used

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  • Machining method for abrasive flow deburring of bushing-like components
  • Machining method for abrasive flow deburring of bushing-like components
  • Machining method for abrasive flow deburring of bushing-like components

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Embodiment 1

[0018] This embodiment provides a processing method for abrasive flow deburring of bushing parts, which is characterized in that: the processing method for abrasive flow deburring of bushing parts, the abrasive flow deburring process of the inner cavity of the bushing Such as figure 1 As shown, there are 2 radial holes 1 of φ2 in the inner cavity, and 1 small hole 2 of φ0.6 in the axial direction, and the outlet of the small hole 2 keeps a sharp edge, 2 radial holes 1 and 1 oil inlet hole 3 There is no special requirement for the intersection, and it is processed according to the grinding sharp edge R0.1~0.3mm, and the surface roughness is Ra3.2.

[0019] In order to eliminate the burrs at the intersection of the radial hole 1 and the oil inlet hole 3, as well as the small hole 2 and the oil inlet hole 3, a set of special fixtures is designed, and the abrasive flow abrasive MF17-150S (75) imported from Germany is used;

[0020] outer circle and end faces Locate and press ...

Embodiment 2

[0024] This embodiment provides a processing method for abrasive flow deburring of bushing parts, which is characterized in that: the processing method for abrasive flow deburring of bushing parts, the abrasive flow deburring process of the inner cavity of the bushing Such as figure 1 As shown, there are 2 radial holes 1 of φ2 in the inner cavity, and 1 small hole 2 of φ0.6 in the axial direction, and the outlet of the small hole 2 keeps a sharp edge, 2 radial holes 1 and 1 oil inlet hole 3 There is no special requirement for the intersection, and it is processed according to the grinding sharp edge R0.1~0.3mm, and the surface roughness is Ra3.2.

[0025] In order to eliminate the burrs at the intersection of the radial hole 1 and the oil inlet hole 3 and the small hole 2 and the oil inlet hole 3, a set of special fixtures is designed, and the abrasive flow abrasive MF17-100S (100) imported from Germany is used.

[0026] outer circle and end faces Locate and press the upp...

Embodiment 3

[0030] This embodiment provides a processing method for abrasive flow deburring of bushing parts, which is characterized in that: the processing method for abrasive flow deburring of bushing parts, the abrasive flow deburring process of the inner cavity of the bushing Such as figure 1 As shown, there are 2 radial holes 1 of φ2 in the inner cavity, and 1 small hole 2 of φ0.6 in the axial direction, and the outlet of the small hole 2 keeps a sharp edge, 2 radial holes 1 and 1 oil inlet hole 3 There is no special requirement for the intersection, and it is processed according to the grinding sharp edge R0.1~0.3mm, and the surface roughness is Ra3.2.

[0031] In order to eliminate the burrs at the intersection of the radial hole 1 and the oil inlet hole 3 and the small hole 2 and the oil inlet hole 3, a set of special fixtures was designed, using German imported abrasive flow abrasives MF17-100S (100), MF17-150S (75 ) and MF17-220S (75);

[0032] outer circle and end faces L...

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Abstract

The invention relates to a machining method for abrasive flow deburring of bushing-like components. According to a procedure of abrasive flow deburring of the inner chamber of the bushing, burrs at the crossed parts of radial holes and an oil inlet holeand a crossed part of a small hole and the oil inlet hole are removed; an excircle 4A and an end face 5B are used for positioning, and the upper surface 6C of a mounting edge is compressed. In a forward cycle, abrasive is fed from a large hole and is discharged from the radial holes; and in a reverse cycle, the abrasive is fed from the radial holes and discharged from the large hole. According to an optimal abrasive flow procedure, the abrasive is preheated for 20-40min and cycles for 4 times, system pressure P is 10MPa, and working pressure P is 7MPa. The machining method has the advantages that via a test of abrasive flow deburring process, the surface roughness of a component inner chamber crossed hole transition part R, inspected by using a bar type endoscope, reaches Ra0.8, the surface roughness and cylindricity of the inner chamber are obviously improved, and burrs at the crossed hole transition part are basically removed. The deburring quality is steady. The primary assembly percent of pass of valve components is greatly improved.

Description

technical field [0001] The invention relates to the field of mechanical processing technology, in particular to a processing method for deburring bush parts by abrasive particle flow. Background technique [0002] The deburring of the inner cavity of the bushing parts in the valve has always been a technical bottleneck in production. For a long time, manual grinding has been used to remove the burrs. To, directly affect the stability of the valve performance. Contents of the invention [0003] The purpose of the present invention is to realize no burr in the inner cavity of the parts, improve the surface quality of the inner cavity of the bushing parts, and improve the assembly quality of the components, and especially provides a processing method for deburring the bushing parts by abrasive particle flow. [0004] The invention provides a processing method for deburring the abrasive particle flow of bushing parts, which is characterized in that: the processing method for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B24C1/00
Inventor 魏鉴梅张晶杜凌霄金英卓吕泉
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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