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精密鑄件智能化加工方法
[作者:aowl] [日期:18-10-10] [瀏覽次數:] [來源:http://www.mobiinet.com]

精密鑄件智能化加工方法 Intelligent machining of precision casting 精密鑄件智能化加工過程示意圖見圖1。第一,通過UG、CATIA等三維軟件設計零件數模;第二,在零件數模基礎上增加機加工餘量,設計鑄件數模;第三,利用鑄造生產工藝澆注成形精密鑄件;第四,使用三維立體測量係統掃描精密鑄件外形數據,形成三維CAD點雲數據模型;第五,將測量的點雲模型與鑄件數模進行對比,通過調整得到最佳狀態,確定加工基準,生成尺檢報告;第六,機加工單位接收尺檢報告,直接對鑄件進行加工,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. 圖1 精密鑄件智能化加工過程示意圖 Figure 1 shows the intelligent machining process of precision casting 按照傳統的加工方法,鑄件廠家繪製二維圖,按照二維圖測量,向機加工方提供測量報告,加工方根據圖紙進行評審,簽署使用意見,鑄造方再進行發貨,入廠後機加廠需要複驗尺寸,確定加工基準,開始加工。對於複雜件,例如機身、車身上帶有曲麵結構的零件,傳統方案存在以下問題:目前設計一般下發電子版三維圖,其轉化為二維圖時,周期長,對於結構複雜曲麵結構其數據點會有缺失,部分尺寸二維圖無法標識;傳統測量手段有些尺寸無法檢測,由於基準不統一,常常導致鑄件報廢。 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. 本方案的特點是省去了二維圖繪製的過程,減少數據的丟失,統一了基準,減少了鑄件的報廢。 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 鑄件的智能化加工過程 The intelligent process of casting 以航空用鑄件外掛主接頭的研製智能化過程,詳細說明本方案的兩個關鍵步驟。所用設備為三維掃描儀測量係統,三維檢測軟件為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 鑄件的信息收集及尺寸優化 Information collection and sizing of casting 利用三維掃描儀對精鑄件進行三維掃描,得到鑄件的三角化數據模型(見圖2)。然後將數據輸入PolyWorks軟件進行高精度的整體誤差均勻化,即可得到高品質的鑄件數據模型。 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. 將數據模型和CAD圖紙導入三維檢測軟件,進行三維檢測。檢測分為模型對齊、誤差分析和生成檢測報告3步。模型對齊後,測量得到的三角化模型與CAD圖紙實現了坐標係的統一, 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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