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Method for analyzing harmfulness of mechanical assembly process

An assembly process and analysis method technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of inapplicable mechanical assembly process, unclear basis for determining the level, and many subjective factors, etc., to achieve the goal of obtaining Convenience, promotion, close parameters and data effect

Inactive Publication Date: 2011-08-17
BEIHANG UNIV
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Problems solved by technology

Among these two methods, the risk priority number method is more commonly used, but this method has many subjective factors in the analysis process, and the basis for determining the level in the standard is not clear enough, so it is not applicable to the mechanical assembly process

Method used

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  • Method for analyzing harmfulness of mechanical assembly process
  • Method for analyzing harmfulness of mechanical assembly process
  • Method for analyzing harmfulness of mechanical assembly process

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Embodiment Construction

[0041] The hazard analysis method based on the characteristics of the mechanical assembly process itself and the application requirements of the present invention will be described in detail below in conjunction with specific implementation cases.

[0042] Case: Applied to hydraulic erection device

[0043] The present invention takes the hydraulic erecting device as an example to illustrate the hazard analysis method based on the characteristics of the mechanical assembly process itself and application requirements.

[0044] First of all, it is necessary to clarify the mechanical assembly process of the hydraulic erecting device, including: parts cleaning, threaded connection with other parts, calibration, adjustment and matching, assembly balance, acceptance, etc.

[0045] The main process failure modes in the mechanical assembly of the hydraulic erecting device determined in the previous work include: cleaning is not clean, residual debris; thread connection is not firm; th...

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Abstract

The invention provides a method for analyzing harmfulness of a mechanical assembly process, comprising the following five steps of: step I, determining the grade of severity of a process failure model; step II, determining the grade of occurrence probability of a process failure model; step III, determining the grade of tested difficulty of a process failure mode; step Iv, calculating the risk priority number of process failure mode; and step V, determining the failure mode of a critical process. The method for analyzing harmfulness of a mechanical assembly process has the advantages that the grade of severity, the grade of occurrence probability and the grade of tested difficulty of a process failure mode are subjected to mathematical analysis and determination by means of a quantification method on the basis of the existing process harmfulness analysis method, the maneuverability is strong, the combination of required parameters and data and the practice is close, the obtaining is convenient, the operation is easy, and the method is suitable for popularizing in the technical field of process reliability engineering.

Description

technical field [0001] The invention relates to a hazard analysis method of a mechanical assembly process, which is dedicated to ensuring the reliable application of products in the mechanical assembly process and reducing application risks, and belongs to the technical field of process reliability engineering. Background technique [0002] Hazard analysis refers to the analysis of the probability of occurrence of each failure mode in the product and the comprehensive impact of its hazard degree, so as to comprehensively evaluate the impact of various possible failure modes of the product. [0003] In current engineering practice, the hazard analysis of products is mainly carried out in accordance with GJB / Z 1391-2006 "Guidelines for Analysis of Failure Modes, Effects and Hazards". However, in this standard, there are not many contents about the hazard analysis of the process, and the operability is not strong. [0004] The hazard analysis methods proposed in the standard i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 付桂翠赵幼虎张超万博裴淳
Owner BEIHANG UNIV
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