A DMAIC-driven process quality improvement method for small batch parts processing

Abstract

The invention relates to a DMAIC-driven small-batch part processing technique process quality improvement method. The logic process of the method mainly comprises five stages, namely, a definition stage, a measurement stage, an analysis stage, an improvement stage and a control stage. The definition stage is to mainly determine the object and target of a quality improvement activity, and find outall factors related to a processing process; the measurement stage is to determine the key control procedures of the processing process, builds a CPS-based digital information acquisition network, andacquires processing data in a production process in real time; the evaluation stage is to construct an assignment type error transmission network, calculate the sensitivity of quality feature error to find out key factors related to a quality problem; the improvement stage is to formulate corresponding measures to improve process parameters and the like according to reasons for the quality problem; and the control stage is to construct a quality feature error prediction model to effectively control product quality. With the method adopted, the processing technique process of small batch partscan be effectively improved and optimized, and a function for continuously improving the processing process quality of the small batch parts can be formed.

Description

technical field [0001] The invention belongs to the field of quality improvement and management in production process management, and in particular relates to a DMAIC-driven method for improving the quality of a small-batch part processing process. [0002] technical background [0003] At present, the demand for industrial products is becoming more and more diversified and individualized. The production mode of modern manufacturing enterprises has gradually changed from the traditional single-type, large-scale production mode to multi-variety, small-batch flexible production. The product quality improvement and management methods of enterprises also urgently need to adapt to this new production mode. Specifically, (1) In the small batch production mode, there are many kinds of parts and components, and the process regulations are complex and changeable. For products with quality problems, it is difficult to analyze the cause of the defects, which leads to the inability to ac...

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Problems solved by technology

[0006] In order to solve the practical problem that traditional quality improvement methods cannot be applied to small batch processing, the object of the present invention is to provide a definition (D)-measurement (M)-analysis (A)-improvement (I)-control (C) (hereinafter referred to as DMAIC)-driven small-batch parts processing process quality improvement method aims to use a small amount of production process data in the small-batch production process to accurately analyze the causes of quality problems, formulate corresponding improvement measures, and build a reliable quality control process. Finally, a complete set of method system for quality improvement of small batch parts processing process was established

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