Process innovation and quality monitoring management of metal stamping parts, ch

< 1> Innovation approach for stamping process of automotive chassis: 1. Optimizing the combination of processes. Based on the completion of a stamping part, there are often multiple processes in the process, so multiple processes are combined or a single process is combined as much as possible. When the stamping part size is too small, composite molds or continuous molds are selected for production. 2. Design Measures for Manufacturing Molds for Automotive Stamping Parts (1) Determination of Mold Structure Form and Type for Hardware Stamping Parts; After the establishment of the process plan, the single die, compound die and continuous die can be selected by simple operation, which is mainly reflected in the unity of stamping for different dies in multiple processes. The positioning surface should be based on no deformation or movement, and flange positioning should be selected for different shapes of parts. (2) As a key link in car body manufacturing, the manufacturing process quality of automotive stamping parts is directly related to the actual profits of enterprises through modular body technology. Therefore, improving the body design and process design to achieve efficiency and cost reduction is the current core development trend. The modular technology of the vehicle body has improved the adaptability of the production line, and the application of platform based and modular methods has been enhanced. The stamping process design in stamping dies is a typical innovative design process. Especially the introduction of KBE technology will be a way for innovative design of stamping dies. In the stage of workpiece design, it is necessary to analyze the processing characteristics of the workpiece, formulate the mold type, basic process parameters, and continuously develop the process plan. In the stage of using stamping dies, the first step is to carry out product stamping activities, and then take corresponding measures to solve problems that arise during different periods of use. In the stamping stage, apply the methods and systems of innovative design to the stamping process design. Especially in the digitalization and intelligent design of stamping dies, a combination of manual and computer methods is first used to manually complete processes such as product drawing development, process design and strip layout, and concave die layout. Secondly, according to the stamping requirements of the parts, the stroke of the slider, the speed curve of the slider, the holding time of the bottom dead center, the nominal pressure, etc. can be programmed arbitrarily, making the mold processing technology have the characteristics of high service life. ≪ Two> The quality process monitoring and management of stamping parts requires strict control of process quality in the stamping workshop, and in-depth implementation of "self process": implementing the "double three inspection" system, namely line inspection, sampling inspection, and patrol inspection, and mandatory inspection of first piece, intermediate piece, and final piece. During the production process, individual parts, parts in the production process, and the next part are inspected according to the "Sampling Operation Standard Book". During the production process, production line employees visually inspect the appearance of stamped parts. If any abnormalities are found, production is stopped and the team leader or quality personnel are contacted for quality confirmation. The production line leader is responsible for inspecting the quality of stamped parts. If any abnormalities are found, production will be stopped and quality personnel will be contacted for quality confirmation. For parts that cannot meet production requirements, fill out the "Mold Maintenance Form" and have the relevant team develop corrective or preventive measures. At the end of the batch, it is necessary to indicate "last piece, inspection date, and inspector's name" on the finished product. When the quality and process of stamped parts are stable, there is no need for full inspection, and instead, sampling and line inspection are used to determine the quality. For automotive metal stamping parts; It belongs to mass production, and the specific sampling frequency needs to be determined according to the GB2828-2003 national standard sampling standard. The quality management of the stamping workshop and the inspection of stamped parts are important links, not only controlling various points, but also involving multiple important links, such as the formulation of standard operations, the standardization of operations by inspection personnel on the basis of sufficient preparation, and the analysis of the causes and formulation of countermeasures for quality defects in order to control the quality of parts. Strictly controlling all aspects of stamping quality is necessary to steadily improve stamping quality and production efficiency. However, the purpose of stamping quality management is to control the process of stamping various factors to meet the design and product requirements of qualified stamping parts, rather than pursuing stamping parts unilaterally.