安装于慢走丝电火花机床上嵌入式可视检测系统的验证和改进

发布时间：2018-05-09 04:28

本文选题：电火花加工机床 + CCD探头　；参考：《广东工业大学》2012年硕士论文

【摘要】：嵌入式可视检测系统(英文名称：Integrated Vision Unit,以下简称：IVU)是一种新型光电检测系统,可被安装在电火花加工机床上,并嵌入阿奇夏米尔公司的数控系统以用来实时观测放大后工件形貌以及进行精密测量。整个系统从初步的设计构思到后来成形为实体己经由瑞士阿奇夏米尔公司研发部在前期工作中完成,本文的主要工作就是提出改进和提升该系统检测精准度的方案,并对其结果进行验证。 IVU系统的硬件部分由电荷耦合阵列探测器(英文名称：Charge Couple Device,简称：CCD)成像器件和发光二极管组成。CCD探头可在数控系统的控制下快速,精准的完成各种制定任务。发光二极管提供正面和背面两个方向的光,辅助测量。检测时CCD探头通过摄像的方式将工件表面情况传送到显示屏上,因此可以实时观测该检测系统的工作情况。本文通过对IVU系统精准度提高方法的研究,提出四步校准方法。校准后又从两方面来验证校准效果：一方面,我们设计了一组同样条件下的重复测量实验,实验结果主要对测量系统的稳定性做了验证；另一方面,又组织了一系列与不同类型检测仪器的对比实验,从而验证了校准后IVU的精准度。形貌扫描功能是研发后期为客户特别设计的一项功能,能够在不预先设定工件形貌的情况下对任意形状的部件进行扫描,并且能够在扫描完成后显示出与标准形貌对比分析的结果。这项功能提高了检测系统的灵活性,在实际使用过程中对客户会有很大帮助。为了验证这项功能的精确度和稳定性,本文设计了两部分实验：首先,将该功能与系统中其他功能相对比,从内部检验该功能与其他功能精准度一致性；其次,再将该功能与其他仪器中的相似功能相对比,从而确定该功能的精准度在实际使用中能否满足客户的需求。为了补充说明该功能在实际运用中的效果,本文还设计了形貌扫描功能在实际工件上作用的实验。本文在最后还提到了下一步研究的方向,即利用这项功能使得IVU不仅能观察和测量工件,还能计算出修正电火花加工机床电极丝加工路径的方案,进一步提高电火花加工机床加工精度。
[Abstract]:Embedded Vision system is a new photoelectric detection system, which can be installed on EDM machine tools. The NC system of Acheshamir is embedded to observe the shape of the enlarged workpiece in real time and to carry out precise measurement. The whole system from the initial design concept to the later formation of the entity has been completed through the research and development department of Acheshamir Company in Switzerland. The main work of this paper is to propose a scheme to improve and enhance the accuracy of the system detection. The results are verified. The hardware part of the IVU system is composed of a charge Couple device and a light-emitting diode, which can accomplish all kinds of tasks quickly and accurately under the control of the numerical control system. Light-emitting diodes provide both front and back directions of light, auxiliary measurement. During the detection, the CCD probe transmits the workpiece surface condition to the display screen by the way of camera, so the working condition of the detection system can be observed in real time. In this paper, a four-step calibration method is proposed by studying the method of improving the accuracy of IVU system. After calibration, the calibration effect is verified from two aspects: on the one hand, we design a group of repeated measurement experiments under the same conditions, the results of the experiment mainly verify the stability of the measurement system; on the other hand, A series of contrast experiments with different types of testing instruments were also organized to verify the accuracy of the calibrated IVU. The morphology scanning function is a function specially designed for customers in the later stage of development. It can scan parts of any shape without pre-setting the shape of the workpiece. After scanning, the results can be compared with the standard morphologies. This function improves the flexibility of the detection system and will be of great help to customers in the actual use process. In order to verify the accuracy and stability of this function, this paper designs two parts of experiments: first, compare the function with other functions in the system, verify the consistency between the function and other functions from the inside; secondly, Then the function is compared with similar functions in other instruments to determine whether the accuracy of the function can meet the needs of customers in practical use. In order to explain the effect of this function in practical application, an experiment on the effect of topography scanning function on the actual workpiece is also designed in this paper. At the end of this paper, the direction of further research is also mentioned, that is, using this function, IVU can not only observe and measure the workpiece, but also calculate the scheme of modifying the electrode wire machining path of EDM machine tool. Further improve the machining accuracy of EDM machine tools.
【学位授予单位】：广东工业大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP368.1;TP274

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