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Based on Pro / MOLDESIGN and NC irregular pieces of plastic mold shell holes rapid design and manufacture of molded parts

Merge (merge), Extend (extension) produces type 2009ff: 12 (Total 104) MOULD & DIEPROJECT Die Engineering 83l11 ~ CAD / CAM / CAEI Gui passed away surrounded on all sides. Using this method to create accurate sub-surface and meet the design requirements, but in the process of copying surface to fill holes in the surface, the workload will be significant, especially in irregular holes. (2) For the irregular geometry of the workpiece, in particular parts of irregular shell holes, you can use special skirt (skirt) technology to quickly and accurately create parts of the sub-surface. The following parts will focus on the combination of Figure 1 Skirt irregular holes in the shell molding parts automatically generate the application quickly. 2.2.2Skirt technology to create technology to create the parting parting Skirt principles: ① use of Pro / E systems SilhoutteCurve (side of the image curve) functions find the parts in the sub-type profile at the direction of the contours of the maximum (including the holes ) curve; ② system selectively silhouette curve in the direction specified automatic extension to the edge of the mold parts, you can also automatically fill the holes, creating sub-surface. (1) side of the curve generated images into Pr0 / E tooling module, created after the desert with the workpiece, the Executive Insertlsilh0utteCurve command, the pop-up SilhoutteCurve dialog. Direction and LoopSelection dialog box is the key to the two setting: the definition of Direction option, you can set the projection direction; defined LoopSelection option, pop-up LoopSelection option box,[link widoczny dla zalogowanych], of which options to exclude unwanted Loops silhouette curve, Chains Options according to the design intent, select the side of the image curve is generated in the part of the outer surface or inner surface. GapClosure Options dialog box is used to check whether the closed side of the image curve. Figure 2 shows the system-generated shell hole on the side of Figure 1,[link widoczny dla zalogowanych], image curve. (2) to create the parting line when the shell hole on the right side of the image curve generated, the implementation of the mold module PartingSurf command,[link widoczny dla zalogowanych], select the Skirt to create the parting surface. The system SkirtSurface dialog box pops up, and asked to select the characteristic curve, all the selected images in Figure 2 generates the side of the curve,[link widoczny dla zalogowanych], you can generate skirt surface. Note that the system automatically generates a sub-surface conditions may be incorrect, then you can redefine SkirtSurface dialog box options. The system automatically generates the parting surface, shown in Figure 3. 2.2.3 molded parts and the automatic generation of 3D solid imitation of true open parting created when completed, the use of system functions to provide the automatic mode, split the block size, with elements drawn desert,[link widoczny dla zalogowanych], you can quickly and accurately produce parts molding core and cavity, as shown in Figure 4 and Figure 5. Completion of the set, can mimic real open, check whether there is interference phenomenon. Simulation shown in Figure 6. Mimic real test by open, non-interference phenomenon, proved mold design and reasonable. 3, molding parts NC machining code to quickly generate the generated molding parts into Pro / E of NC modules NC processing 84 Die Engineering MOULD & DIEPROJECT2009 on 12 【Total No. 104 Figure 2 silhouette curve ring 4 core solid type 5 6 cavity ring opening process mimic real production. Machine tool based on the cavity surface and fixture selection, excursion process parameters, set processing method. NC sequence, the machining simulation, the required tool path data file, generated NC post-processing processing processing GNC G code input machining center out of molding parts. 4 Conclusion to Pro / E software Pro / MOIDESIGN modules and Pro / Q machine combination, can effectively implement complex irregular parts of the shell hole on the rapid design and manufacture of parts, thus greatly improving product design product manufacturing cycle. This will improve the quality and accuracy of the mold and shorten the molding cycle is of great significance, can further enhance the quality of the mold into the enterprises in the manufacturing and delivery cycle of the core competitiveness. References a9: f1】 Xuren Hu, Yang Weihu. Rapid prototyping design and development to bring product innovation, Kunming University of Technology, 2001,26 (4) :1-5 [2] Li Xiangpeng Pro/E-- mold design articles 【M】. Beijing: People's Press, 2006 [3】 Zhanyou Gang. Pro / E tutorial 【M】 NC _ Beijing: China Machine Press A ● ■

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