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精密铸件智能化加工方法
[作者:aowl] [日期:19-03-21] [浏览次数:] [来源:]

精密铸件智能化加工方法 Intelligent machining of precision casting 精密铸件智能化加工过程示意图见图1。第一,通过UG•●、CATIA等三维软件设计零件数模;第二,在零件数模基础上增加机加工余量,设计铸件数模;第三,利用铸造生产工艺浇注成形精密铸件;第四,使用三维立体测量系统扫描精密铸件外形数据,形成三维CAD点云数据模型;第五,将测量的点云模型与铸件数模进行对比,通过调整得到最佳状态,确定加工基准,生成尺检报告;第六,机加工单位接收尺检报告,直接对铸件进行加工,完成零件成形。 The intelligent process diagram of precision casting is shown in figure 1. First, design parts, such as UG, CATIA, etc. Second, to increase the machining allowance on the basis of the parts number and design the casting number. Third, using foundry manufacturing techniques to cast precision castings; Fourth, using three-dimensional measurement system to scan the data of precision casting, form a 3d CAD point cloud data model; Fifth, the measuring point cloud model is compared with the casting digital model, and the optimum state is adjusted, the processing benchmark is determined, and the report of the ruler is generated. Sixth, the machine processing unit receives the measuring report, processing the casting directly, complete the parts forming. 图1 精密铸件智能化加工过程示意图 Figure 1 shows the intelligent machining process of precision casting 按照传统的加工方法,铸件厂家绘制二维图,按照二维图测量,向机加工方提供测量报告,加工方根据图纸进行评审,签署使用意见,铸造方再进行发货,入厂后机加厂需要复验尺寸,确定加工基准,开始加工。对于复杂件,例如机身•●、车身上带有曲面结构的零件,传统方案存在以下问题:目前设计一般下发电子版三维图,其转化为二维图时,周期长,对于结构复杂曲面结构其数据点会有缺失,部分尺寸二维图无法标识;传统测量手段有些尺寸无法检测,由于基准不统一,常常导致铸件报废。 According to the traditional processing methods, casting manufacturer to draw two-dimensional figure, according to the two-dimensional figure measurement, offer our measurement report to machining, processing according to the drawing review, sign using opinion, foundries, and then to shipment, the factory after machining factory need to reinsert the size, determine the processing base, begin processing. For complex parts, such as the fuselage, car body parts with curved surface structure, the traditional solution exist the following problems: the design of general distributed digital three dimensional figure, it into two-dimensional figure, cycle is long, for complex curved surface structure of the data points will be missing, section size 2 d figure cannot identify; Traditional measurements are not detectable in size, and because of the inconsistencies of the base, the castings are often discarded. 本方案的特点是省去了二维图绘制的过程,减少数据的丢失,统一了基准,减少了铸件的报废。 The feature of this scheme is to eliminate the process of drawing in two dimensions, reduce the loss of data, unify the base, and reduce the scrap of castings. 2 铸件的智能化加工过程 The intelligent process of casting 以航空用铸件外挂主接头的研制智能化过程,详细说明本方案的两个关键步骤。所用设备为三维扫描仪测量系统,三维检测软件为Shiningform XOV。 In this paper, the process of developing intelligent process of the main joint of the castings is described in detail, and two key steps of the plan are described in detail. The device is a three-dimensional scanner measurement system, and the 3d detection software is Shiningform XOV. 2.1 铸件的信息收集及尺寸优化 Inion collection and sizing of casting 利用三维扫描仪对精铸件进行三维扫描,得到铸件的三角化数据模型(见图2)。然后将数据输入PolyWorks软件进行高精度的整体误差均匀化,即可得到高品质的铸件数据模型。 Three-dimensional scanning of the casting parts by 3d scanning is used to obtain the triangular data model of castings (see figure 2). Then the data can be entered into PolyWorks software to make the overall error uniformity, and the high quality casting data model can be obtained. 将数据模型和CAD图纸导入三维检测软件,进行三维检测。检测分为模型对齐•●、误差分析和生成检测报告3步。模型对齐后,测量得到的三角化模型与CAD图纸实现了坐标系的统一, Import the data model and CAD drawings into 3d detection software for 3d detection. The tests are divided into three steps: model alignment, error analysis and generation detection. After the model alignment, the triangulation model and the CAD drawing are implemented in the unified frame,

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