某发动机再制造装配方法的研究

发布时间：2018-09-12 16:48

【摘要】：世界经济和科技正在快速的发展,但是我们人类发展所需求的资源在地球上是有限的,尤其是现在人们的生活节奏越来越快,导致可使用的资源量快速下降。与此同时人们的生活给地球环境带来污染也是日益严重,使人类居住环境水平不断下降。由于这些原因使得人类不得不去寻求和探索一种可持续发展的新道路,这种道路能够使得人类在对地球资源消耗最少、对地球环境污染最小前提下获得最多的经济效益。而再制造这一产业正是具有了这些优点的一种生产模式,再制造产业正在我国快速的发展,其中汽车发动机再制造是我国再制造产业中最为典型的代表之一,其带来的各种效益是非常明显的。再制造发动机的装配环节对其最后的成品的整体性能有着关键性的影响。本文从再制造发动机装配环节入手,为了减少装配时再制造零件的损失,结合再制造发动机实际生产情况,提出相应的装配策略,并以某厂生产的再制造发动机曲柄组件装配为例进行验证。首先,由于目前我国再制造发动机起步不久,并且我国现在对废旧发动机回收管体系不够成熟,导致很多企业再制造发动机的产量并不多。因此本文在再制造发动机小批量生产时的装配前提下,并结合再制造件的实际情况,提出以穷举法和贪婪法相结合的直接选配法,解决对再制造发动机的曲柄组件中四种零件的装配问题。其次,随着国家对再制造产业不断提倡与大力支持,再制造发动机生产规模日益增大。因此,在大批量生产规模下,提出分组装配策略,从而解决再制造件在装配时所遇到实际问题。最后,利用MATLAB,对其装配数学模型进行编程,并在MATLAB中的GUIDE模块中分别建立了对应不同批量装配的图形用户界面。其界面简洁操作方便,减轻装配人员的计算工作量,使装配效率得到提高。
[Abstract]:The world economy and technology are developing rapidly, but the resources we need for human development are limited on the planet, especially now that the pace of life is getting faster and faster, resulting in a rapid decline in the amount of available resources. At the same time, people's life brings pollution to the earth environment, which makes the living environment level decline. Because of these reasons, human beings have to seek and explore a new way of sustainable development, which can make mankind obtain the most economic benefits under the premise of the least consumption of the earth's resources and the least pollution of the earth's environment. The remanufacturing industry is a kind of production mode with these advantages. The remanufacturing industry is developing rapidly in our country. Among them, the automobile engine remanufacturing is one of the most typical representatives of the remanufacturing industry in our country. The benefits are obvious. The assembly of the remanufacturing engine has a critical impact on the overall performance of the final product. In this paper, starting with the remanufacturing engine assembly link, in order to reduce the loss of the remanufactured parts during assembly, combined with the actual production situation of the remanufacturing engine, the corresponding assembly strategy is put forward. The assembly of the crank assembly of a remanufacturing engine produced by a factory is verified as an example. Firstly, because of the recent start of the remanufacturing engine in our country and the immaturity of the recycling pipe system of the waste engine in our country, the output of the remanufacturing engine in many enterprises is not much. Therefore, on the premise of assembly in small batch production of remanufacturing engine and combining with the actual situation of remanufactured parts, a direct selection method combining exhaustive method and greedy method is put forward in this paper. To solve the assembly problem of four parts in the crank assembly of the remanufacturing engine. Secondly, with the continuous promotion and support of the remanufacturing industry, the production scale of the remanufacturing engine is increasing day by day. Therefore, a grouping assembly strategy is proposed to solve the practical problems of remanufacturing parts in mass production. Finally, the assembly mathematical model is programmed by MATLAB, and the graphical user interface corresponding to different batch assembly is established in the GUIDE module of MATLAB. The interface is simple and easy to operate, reduces the workload of the assembler, and improves the assembly efficiency.
【学位授予单位】：天津科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U464;TG95

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