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本文重点阐述了在线SPC控制技术在汽车零部件产品上的应用。基于WEB方式建立SPC软件系统,根据图纸及客户的特殊要求识别零件的关键特性尺寸,确定相关的过程特性参数,建立产品在线SPC统计过程控制系统。用带RS232数据接口的专用量具测量关键尺寸并同步将测量结果传输到SPC处理机上,对数据进行计算分析,将输入的数据点根据分析结果以不同的颜色显示在控制图上,直观可见,并建立异常处理快速响应机制,对生产过程实时监控。发现异常及时采取有效措施,把问题扼杀在萌芽状态。经实践证明,能有效减少不合格品,降低质量损失,提高产品质量。
This article focuses on the application of online SPC control technology in automotive parts. Establish SPC software system based on WEB mode, identify the key characteristics and dimensions of the parts according to the drawings and customer’s special requirements, determine the relevant process characteristic parameters, and establish the on-line SPC statistical process control system of products. Measure the key dimension with the special gauge with RS232 data interface and transfer the measurement result to the SPC processor synchronously. The data are calculated and analyzed. The input data points are displayed in different colors according to the analysis result on the control chart. Establish an exception handling rapid response mechanism, real-time monitoring of the production process. Abnormal found timely and effective measures to strangle the problem in the bud. Proved by practice, can effectively reduce the nonconforming product, reduce the quality loss and improve the product quality.