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Detection method of inner porosity surface angle dimension

A detection method and surface angle technology, applied in the field of mechanical processing, can solve problems such as poor flexibility, high production and management costs, and long cycle, and achieve the effects of high detection reliability, shortened production cycle, and wide application range

Active Publication Date: 2016-12-21
AECC AVIATION POWER CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] For the inner hole surface of shaft parts, especially the angular dimension of the drum-shaped surface or deep hole surface, it is impossible to detect economically and conveniently. Previously, the method of processing standard samples and dissecting the measurement method was used. In the subsequent production process, human and machine The production and management costs are high, the cycle is long, and the flexibility is poor; this method cannot rule out the influence of accidental factors, and cannot guarantee the processing quality of each product

Method used

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  • Detection method of inner porosity surface angle dimension
  • Detection method of inner porosity surface angle dimension
  • Detection method of inner porosity surface angle dimension

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1, drum-shaped cavity degree surface angular dimension detection;

[0019] see figure 1 , taking the detection of the angular size of the inner hole of a rotor shaft at 10°±0.5° as an example, the degree surface is on both sides of the drum-shaped cavity, and the steps of angle detection are as follows:

[0020] Step 1, process the inner hole surface 1 according to the requirements of the design drawing;

[0021] Step 2, machining the outer surface 2 with the same angle on the outer shape opposite to the inner hole surface (reserving a margin according to the size requirements of the inner hole surface 3 of the actual outer shape);

[0022] Step 3: Measure the actual value of the exterior surface angle β = 9.95° by measuring tools or instruments;

[0023] Step 4, use a wall thickness measuring instrument to detect the actual wall thickness M and N of the inner and outer profile surfaces at two axial fixed-point positions with a distance of L=20, where M=5.1...

Embodiment 2

[0027] Embodiment 2, the detection of the angular size of the reverse degree surface;

[0028] see figure 2 , taking the detection of the angular size of the inner hole of a certain rotor shaft at 8.5°±0.5° as an example, the degree surface is close to the small end of the inner hole of the part, and is a reverse degree surface. The steps of angle detection are as follows:

[0029] Step 1, process the inner hole surface 1 according to the requirements of the design drawing;

[0030] Step 2, machining the outer surface 2 with the same angle on the outer shape opposite to the inner hole surface (reserving a margin according to the size requirements of the inner hole surface 3 of the actual outer shape);

[0031] Step 3: Measure the actual value of the surface angle of the shape by measuring tools or instruments β = 8.341°;

[0032] Step 4, use a wall thickness measuring instrument to detect the actual wall thickness M and N of the inner and outer surface at two axial fixed po...

Embodiment 3

[0035] Embodiment 3, deep hole surface angle dimension detection;

[0036] see image 3 , taking the detection of the angular size of the inner hole of a rotor shaft at 9.5°±0.25° as an example, the degree surface is at the end of the part, and is far away from the end faces of the left and right ends. The steps of the angle detection in this embodiment are as follows:

[0037] Step 1, process the inner hole surface 1 according to the requirements of the design drawing;

[0038] Step 2, machining the outer surface 2 with the same angle on the outer shape opposite to the inner hole surface (reserving a margin according to the size requirements of the inner hole surface 3 of the actual outer shape);

[0039] Step 3, measure the actual value of the surface angle of the shape by measuring tools or instruments β = 9.452°;

[0040] Step 4, use the wall thickness measuring instrument to detect the actual wall thickness M and N of the inner and outer surface at two axial fixed point...

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Abstract

The invention discloses a detection method of an inner porosity surface angle dimension. The method comprises the steps of (1) processing an inner porosity surface according to a design map requirement, wherein the angle actual value is alpha, (2) processing an outer porosity surface of a same angle at the outer side of an inner porosity surface, (3) measuring an outer porosity surface angle actual value beta, (4) detecting the wall thickness actual values M and N of inner and outer porosity surface at two axial fixed point with a distance of L, (5) obtaining the actual angle of the inner porosity surface according to a formula alpha = beta + arctan [(N-M) / L]. The method has the advantages of a wide range of use, strong adaptability and no need of a complex inner diameter measuring tool, an area such as a drum-shaped cavity, a reverse porosity surface, a deep porosity surface which a common measurement tool and detection method can not reach can be conveniently measured, and the detection reliability is high. The method has strong adaption ability when the method is used in small volume production, a standard sample for dissection in a first batch of processing can be saved, and a production period is shortened. When the method is used for batch production, a component processing state is subjected to timely random inspection and regular recheck.

Description

technical field [0001] The invention belongs to the field of mechanical processing, and in particular relates to a method for detecting the angular size of an inner hole surface. Background technique [0002] For the inner hole surface of shaft parts, especially the angular dimension of the drum-shaped surface or deep hole surface, it is impossible to detect economically and conveniently. Previously, the method of processing standard samples and dissecting the measurement method was used. In the subsequent production process, human and machine The production and management costs are high, the cycle is long, and the flexibility is poor; this method cannot rule out the influence of accidental factors, and cannot guarantee the processing quality of each product. Contents of the invention [0003] The object of the present invention is to overcome the above-mentioned shortcomings, and provide a method for detecting the angular size of the inner hole surface. The method has a w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/08G01B21/22
CPCG01B21/08G01B21/22
Inventor 潘继红刘丽娟杜大成赵冲冲周泽建葛守兴吴海涛强生玉
Owner AECC AVIATION POWER CO LTD