专用密封圈及模具检测系统设计

Aiming at the problems of efficient detection of the special sealing ring and the mold cavity parameters,the features of the special sealing ring and the mold, interference factor,error calculation models were researched,the principle and constitution of detection system were summarized,a new detection system based on laser scanning sensor was proposed. The characteristic parameters of the object can be judged by multi section and multi angle scanning the contour of discrete point data and curve fitting. In the detection system,the four-dimensional precision motion platform and high precision three ja'w chuck movement table which form the artifact bearing positioning platform was designed. Then,data acquisition channel was formed by using laser two-dimensional scanning sensor and NI6229 data collection,the establishment and the realization method of the measuring coordinate of the system was analyzed. Finally,the curve fitting and feature extraction algorithm based on the principle of least squares was proposed. The results indicate that the uncertainty of this system can reach 9. 84 μm, and it can effectively solve the problem of the sealing ring and the mold for efficient non-contact detection,so as to improve the quality of sealing ring. [ABSTRACT FROM AUTHOR]     

某型导弹电缆网导通绝缘性能检测系统设计

为了改进传统导弹电缆网检测手段存在的效率低、可靠性差等问题,在总结国内外电缆检测发展现状的基础上,对电缆通断、导通和绝缘等检测的原理、硬件的总线级联、通信和集成、电缆转接、数据库和报表设计等方面进行了研究,开发了一种以工控机、NX电缆测试仪、低压高阻检测模块和电缆转接板为硬件,基于C#和SQL Server 2008的通用电缆自动检测系统。系统通过NX电缆测试仪完成了导通、绝缘电阻检测,专用模块以继电器开关矩阵和带串口的数字万用表分别进行了测点切换和数据采集实现低压高阻检测,各硬件之间经串口或USB实现了通信;通过分析电缆连接关系,设计了电缆转接板实现检测端子的标准化、模块化。根据硬件结构和系统功能划分软件模块,设计了数据库表及用户报表,实现了检测结果的保存、查询和打印。检测及实验结果表明,系统检测的分辨力、准确度、可靠性高,稳定性好,检测速度快,性能满足要求。