泵的装配过程评价研究
发布时间:2018-11-23 20:45
【摘要】:泵属于通用机械,在水利工程、化工和石油等国民经济部门中用途很广。由于传输介质的特点,化工生产用泵本身必须能适应高低压、高低转速以及强腐蚀性等特殊条件。由于装配方案和装配质量对于泵的功能、性能以及可靠性有着较大影响,这对泵的装配规划提出了较高要求。装配评价可为泵的装配规划提供依据,从而得到较优的装配序列。装配过程评价不仅对产品的装配序列进行评价,而且对装配过程因素进行全面评价。装配过程评价是装配技术研究领域中的一个难点和热点,其核心问题是装配序列的评价与选择。 本文对泵的装配过程评价进行研究,从装配过程评价指标体系的建立、评价方法选择、实例研究和评价系统开发等方面阐述了泵的装配过程评价问题,旨在为泵的装配规划和自动化装配提供依据和参考。 首先,,针对泵的装配过程和装配工艺特点,建立了装配操作方便性、装配精度保证性、装配工艺简单性和装配可行性4个一级指标下的20个二级装配过程评价指标体系。 其次,采用层次分析法(AHP)合理地确定各评价指标的权重。对于部分定量评价指标,给出了相应的隶属度计算公式。采用基于最优参考集或模糊评价方法,得到待评价序列在其余评价指标下的隶属度。 再次,利用上述评价指标和评价方法,分别对CB型齿轮泵、FS型单级离心泵和D型分段式多级离心泵的装配过程进行实例研究,分别选择几种具有代表性的装配序列进行评价,完成对泵的装配过程综合评价。 最后,利用VB开发一个装配过程评价系统,有助于实现人机交互。按照指定的算法,可以处理一些复杂的计算问题,大大地提高了计算效率,为装配过程评价提供了一种工具和平台。
[Abstract]:Pump is a general-purpose machinery, in hydraulic engineering, chemical and petroleum sectors of the national economy in a wide range of applications. Because of the characteristics of transport medium, the pump for chemical production must be able to adapt to the special conditions such as high and low pressure, high and low rotational speed and strong corrosion. The assembly scheme and assembly quality have great influence on the function, performance and reliability of the pump, which puts forward higher requirements for the assembly planning of the pump. Assembly evaluation can provide basis for assembly planning of pump and obtain better assembly sequence. Assembly process evaluation not only evaluates the product assembly sequence, but also evaluates the assembly process factors. Assembly process evaluation is a difficult and hot topic in the research field of assembly technology, and the core problem is the evaluation and selection of assembly sequence. In this paper, the assembly process evaluation of the pump is studied, and the evaluation problems of the pump assembly process are expounded from the following aspects: the establishment of the evaluation index system, the selection of the evaluation method, the case study and the development of the evaluation system. The purpose is to provide basis and reference for assembly planning and automatic assembly of pumps. Firstly, according to the characteristics of the assembly process and assembly process of the pump, the evaluation index system of 20 second grade assembly process is established under the four indexes of convenient operation, assurance of assembly precision, simplicity of assembly process and feasibility of assembly. Secondly, AHP (AHP) is used to determine the weight of each evaluation index reasonably. For some quantitative evaluation indexes, the corresponding calculation formula of membership degree is given. Based on the optimal reference set or fuzzy evaluation method, the membership degree of the evaluation sequence under other evaluation indexes is obtained. Thirdly, the assembly process of CB gear pump, FS single-stage centrifugal pump and D-type multi-stage centrifugal pump is studied by using the above evaluation index and evaluation method, and several representative assembly sequences are selected to evaluate. Complete the comprehensive evaluation of the pump assembly process. Finally, an assembly process evaluation system is developed by using VB, which is helpful to realize man-machine interaction. According to the specified algorithm, some complex computing problems can be solved, and the computational efficiency is greatly improved, which provides a tool and a platform for assembly process evaluation.
【学位授予单位】:武汉工程大学
【学位级别】:硕士
【学位授予年份】:2012
【分类号】:TH3;TP391.7
本文编号:2352643
[Abstract]:Pump is a general-purpose machinery, in hydraulic engineering, chemical and petroleum sectors of the national economy in a wide range of applications. Because of the characteristics of transport medium, the pump for chemical production must be able to adapt to the special conditions such as high and low pressure, high and low rotational speed and strong corrosion. The assembly scheme and assembly quality have great influence on the function, performance and reliability of the pump, which puts forward higher requirements for the assembly planning of the pump. Assembly evaluation can provide basis for assembly planning of pump and obtain better assembly sequence. Assembly process evaluation not only evaluates the product assembly sequence, but also evaluates the assembly process factors. Assembly process evaluation is a difficult and hot topic in the research field of assembly technology, and the core problem is the evaluation and selection of assembly sequence. In this paper, the assembly process evaluation of the pump is studied, and the evaluation problems of the pump assembly process are expounded from the following aspects: the establishment of the evaluation index system, the selection of the evaluation method, the case study and the development of the evaluation system. The purpose is to provide basis and reference for assembly planning and automatic assembly of pumps. Firstly, according to the characteristics of the assembly process and assembly process of the pump, the evaluation index system of 20 second grade assembly process is established under the four indexes of convenient operation, assurance of assembly precision, simplicity of assembly process and feasibility of assembly. Secondly, AHP (AHP) is used to determine the weight of each evaluation index reasonably. For some quantitative evaluation indexes, the corresponding calculation formula of membership degree is given. Based on the optimal reference set or fuzzy evaluation method, the membership degree of the evaluation sequence under other evaluation indexes is obtained. Thirdly, the assembly process of CB gear pump, FS single-stage centrifugal pump and D-type multi-stage centrifugal pump is studied by using the above evaluation index and evaluation method, and several representative assembly sequences are selected to evaluate. Complete the comprehensive evaluation of the pump assembly process. Finally, an assembly process evaluation system is developed by using VB, which is helpful to realize man-machine interaction. According to the specified algorithm, some complex computing problems can be solved, and the computational efficiency is greatly improved, which provides a tool and a platform for assembly process evaluation.
【学位授予单位】:武汉工程大学
【学位级别】:硕士
【学位授予年份】:2012
【分类号】:TH3;TP391.7
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