A PPM statistical evaluation model based on structure level of equipment products

In order to solve the problem that the quantitative evaluation of equipment quality is mainly based on processing and manufacturing conformity indicators, which is not conducive to the improvement and decomposition and implementation of quality goals, this study established a three-level PPM statistical evaluation model covering “basic products-single machine/component-equipment products”, analyzed the process and methods of statistics and processing of process defect data of basic products, constructed a PPM statistical evaluation model for single machine/component products and equipment products, and carried out a pilot application with a certain equipment product as the pilot application object to verify the effectiveness of the model.