铝合金点焊在线监测数据库的构建

Databese establishment of aluminium alloy spot welding on-line momtor

以所开发的铝合金点焊在线监测系统为基础,构建了在线监测数据库。数据库通过与基于LabVIEW开发环境的在线监测系统相连接,实现了焊点质量特征参数及焊点原始特征信息的实时记录与保存。数据库为用户提供了焊点信息及人员信息的多种查询、管理功能,实现了点焊生产的信息化管理,非常适合航空航天产品的生产管理及该厂的实际情况。数据库信息为在线监测系统提供参数优化数据源,通过均值控制图法实现对在线监测系统焊点质量判定临界阈值的优化。结果表明,数据库的参数优化功能使铝合金点焊在线监测系统达到了较高的判定精度,并已在航空航天产品的点焊生产中得到应用。

Based on the on-line monitoring system of aluminium alloy spot welding the database was constructed. The database connected with the on-line monitoring system based on LabVIEW to record and slave the real-time quality information of nuggets . The database also supports nugget information querying and managing and worker information querying and managing. This functions are very suitable for aerial manufacture and the factory practicality. The [AKX-]-chart is used to estimate the critical value of the nugget quality by analyzing the database information, and the critical value is feed back to the on-line monitoring system. The results of experiments indicate that this on-line monitoring system has achieved high precision in the nugget quality estimation, and it has been used in the aerial products spot welding now.