【作者】 孙志海；

【导师】 刘丽冰；

【作者基本信息】 河北工业大学 ， 机械制造及其自动化， 2003， 硕士

【摘要】 目前机械加工过程中，工件的定位与检测大部分还要依靠人工来完成。人工测试不但工作量大，带有一定的人为因素，而且质量数据也不能采集。开发加工中心在线检测系统，既是企业生产实际中亟待解决的难题，也是开发CIMS/QAS系统中的关键技术。不解决好自动检测技术，产品质量信息就难以得到集成。本文在该技术原有发展的基础上，结合CAD/CAM的最新发展，以提高加工中心的加工柔性、加工效率、加工精度为目的，对加工中心在线检测系统进行了深入的研究。本文介绍了基于CAD的加工中心在线检测系统的软件的总体分析与设计、功能及关键技术研究。在ObjectARX的开发环境Visual C++ 6.0下，结合MFC类库，对MDT二次开发，提取图形数据，制定检测路径规划，自动生成检测程序。该系统可用于工件的装夹找正，对工件进行自动在线测量等。 本文基于软件工程，结合自动编程技术的最新发展，进行了基于CAD的加工中心在线检测系统的需求分析、模块划分、软件总体设计等。并对各项关键技术进行了如下研究： (1)特征识别与数据提取技术。以MDT为开发平台，利用ARX，VC++，MFC类库三者相结合作为开发工具，对MDT进行二次开发，获取检测所需数据。 (2)检测路径规划模块。路径规划作为CAD与在线检测系统集成的纽带，在加工中心在线检测系统中具有举足轻重的作用。涉及到路径规划的控制参数、层次分类等问题。 (3)自动编程和程序集成技术研究。 最后，总结本文的工作并展望了进一步的研究方向。更多还原

【Abstract】 During the process of machining, the orientation and inspection of workpiece depend on manpower mostly. The manual inspecting has some man-made factor and its work is great, some data of quality also can’t be collected. The exploitation of machine center on-line inspecting system is an imperative problem in the production practice and the critical technology to develop the system of CIMS/QAS. If automatic inspecting technology can’t be solved primely, the product quality information can’t be integrated. This paper based on the recent development of on-line inspection for machine center and CAD/CAM, machine center on-line inspecting system is studied thoroughly to improve the flexility, efficiency and precision of machine center. The on-line inspecting system on machining center based on CAD is introduced in this paper, include software schematic analysis and design, function and critical technology. In the Visual C++6.0 environment of the ObjectARX and MFC class libraries, graphical data are obtained by secondary development of MDT, inspecting path planning is laid and the inspecting program is made automatically. The inspecting system can be applied for automatic setting up and on-line inspecting of workpiece, and so on.Based on software engineering and the recent development of automatic programming technology, The requirement analysis, module partition and software schematic design of machine center’s on-line inspecting system based on CAD and the following criticaltechnologies are studied.(1) The technology of feature recognition and data abstraction. We take the MDT as development platform, and take ARX, VC++ and MFC class libraries as development tool, make secondary development on MDT, to abstract data that inspection requires.(2) Inspecting path planning module. The path planning is the ligament between CAD and on-line inspecting system. It holds the balance in the machine center’s on-line inspecting system and includes control parameter and hiberarchy of the path planning.(3) The technology of automatic programme and program integration. At last, a simple prospect for the possible applications is given.更多还原