Research of Correlation-Model between Qualities Attributes and Quality Control Points in Assembly Process of the Complex Product Based on Network Flow

Abstract

For representing the coupling relationships among various correlate elements in the formation process of assembly qualities, the mapping relations between the structure domain and the quality domain was established on the basis of analyzing the hybrid structure assembly. Through classifying the quality characteristics, the quality domain was divided into two sub-sets which are quality control points set and quality attributes set. Defining the relevant elements in the model, such as vertex, arc, etc by the theory of network flow, the coupling relations among various quality control points in the formation process of assembly qualities were reflected. According to the sequence of quality control points entering into assembly environment, their corresponding hierarchy in the model were determined, which presents the timing sexual of the formation process of assembly qualities. At last, a correlation-model between quality attributes and quality control points in the assembly process of complex product based on network flow was established, which would be the theoretical basis for the dynamic tolerance optimization of quality control points. An example of an automobile active gear axle assembly was given to demonstrate the feasibility of the correlation-model.

Improving the Quality of Friction Welding by Selected Methods

“…Technological developments and changes in the industrial economy require products of high quality and with increasingly better properties. These trends also apply to internal combustion engines which generate energy for the propulsion of motor vehicles [1,2]. Among all the components of the internal combustion engine, the part that is most vulnerable to thermal damage is the piston.…”

Quality Management of Aluminum Pistons with the Use of Quality Control Points

“…In the broadest sense, quality control means that quality inspectors shall attempt to identify non-conformity of the product, the causes of non-conformity and to correct deviations from the desired condition. The purpose of quality control is to safeguard quality by preventing the customers of products that do not comply with the specified requirements or to increase the chances that the product will be free from non-conformity when it is put into service or further stages of the production process [10,11,16]. The aim of the article is it propose and method of analyzing the effectiveness of particular methods of quality control used in the production process of aluminium piston.…”