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Machining detection method for improving part edge surface integrity

A surface integrity and detection method technology, applied in metal processing equipment, control of workpiece feed movement, manufacturing tools, etc., can solve the problems of low quality of edge processing of parts, affecting the overall fatigue performance of parts, poor consistency, etc.

Inactive Publication Date: 2014-02-19
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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Problems solved by technology

Moreover, the HB5800-1999 "General Tolerance" only stipulates the size value of the rounding and chamfering, and does not specify the processing method, edge shape and detection method. Qualified, its appearance is different, and the detection method is not clear, and the influencing factors of human subjective judgment are relatively large, so that the quality of the edge processing of the part is not high and the consistency is poor. In severe cases, the source of fatigue is formed on the edge due to improper processing methods. Affects the overall fatigue performance of the part

Method used

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  • Machining detection method for improving part edge surface integrity
  • Machining detection method for improving part edge surface integrity
  • Machining detection method for improving part edge surface integrity

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Embodiment Construction

[0023] The present invention combines the existing conditions and development potential, perfects and refines the basic standards, and clearly and meticulously specifies the edge processing of parts, including the requirements for rounding and chamfering and the determination of deviations:

[0024] 1) For 45-degree chamfers and roundings that are not specified in the design drawings, follow the provisions of HB5800-1999 "General Tolerances".

[0025] 2) For the 45° chamfer, the provisions of HB5800-1999 "General Tolerance" are more detailed than foreign technical documents, but the limit deviation is slightly looser than that of foreign technical documents when some dimensions are divided. Combined with the company's Technical ability, the tolerance of the 0.3-6mm size segment is tightened. The specific differences are shown in Table 1:

[0026] Table 1 Comparison of differences between the original technical document and this technology

[0027]

[0028] 3) For chamfers...

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Abstract

The invention discloses a machining detection method for improving the part edge surface integrity. Within a chamfering range, any smooth transfer state curve shape is regarded to be qualified; as for 45-degree chamfering, the limit deviation of 03-6mm chamfering is + / -0.2mm; as for non-45-degree chamfering, machining is carried out according to the length dimension tolerance of the General tolerance HB5800-1999. The machining detection method has the advantages that rounding and chamfering of the part edges are specified in a detailed mode, the original conditions that the part manufacturing quality is unstable, human factor influences are large, assembling interference occurs, and the fatigue performance is poor are avoided, the blank in the part manufacturing detail requirement is filled, a foundation is laid for in-depth study of the surface integrity, and the technical problem that due to an improper machining method, fatigue sources are formed at the edges, and the integral fatigue performance of parts is influenced is solved.

Description

technical field [0001] The invention relates to the field of mechanical processing, in particular to a processing detection method for improving the integrity of the edge surface of parts. Background technique [0002] At present, the edge rounding and chamfering of engine parts are basically in accordance with the dimensional tolerances for chamfering and rounding in HB5800-1999 "General Tolerance", within the range of 0.1 ~ 6mm, the segments are finer, divided into 6 sections, and those larger than 6mm The range is only divided into two sections of 6~30 and 30~120; and the angle deviation of chamfering only stipulates the deviation of 45 angles. Moreover, the HB5800-1999 "General Tolerance" only stipulates the size value of the rounding and chamfering, and does not specify the processing method, edge shape and detection method. Qualified, its appearance is different, and the detection method is not clear, and the influencing factors of human subjective judgment are relati...

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Application Information

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IPC IPC(8): B24B49/00
CPCB24B49/00
Inventor 刘晓哲杨涧石马艳玲吕泉马芳薇郑楠
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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