【正文】
cture of die casting dies are shortened obviously. The process parameters and technological scheme of die castings can be optimized with the help of CAE simulation. This results in the production of die castings of consistently high quality in a shorter time, and the leadtime is shortened greatly. However, further research and development has to be undertaken for this integrated system, especially for the part of the expert system. More cases of die castings that are produced successfully in production have to be analyzed, and their information will be also included in the expert system. This will help to perfect the expert system. References [1] K. Chipley, S. Viswanathan, . Cooper, Die Cast. Eng. 40 (2) (1996) 18–26. [2] . Bralower, Die Cast. Eng. 42 (5) (1998) 16–20. [3] . Midson, Die Cast. Eng. 38 (5) (1994) 42–46. [4] S. Yue, G. Dai, Foundry Mater. 22 (1–2) (1998) 8–13. [5] Shuhua, Yue, J. Yu, H. Sun, et al., Foundry 46 (1) (1997) 14–18. CAD/CAE/CAM 集成系統(tǒng)在壓鑄模具中的應(yīng)用 摘 要 根據(jù)并行工程( CE 認證 )的概念, CAD/CAE/CAM 集成系統(tǒng)目前已在壓鑄模具設(shè)計中得到建立和初級階段的應(yīng)用。如何在較短的時期里用較低的成本生產(chǎn)出高質(zhì)量的壓鑄件已成為壓鑄企業(yè)一項重要而緊迫的任務(wù)。因此,模具設(shè)計者對模具的 CAD/CAE/CAM 集成系統(tǒng)的越來越多的關(guān)注,體現(xiàn)了現(xiàn)代先進制造技術(shù)的 CE 技術(shù)的重要性越來越大。鑄造模擬軟件包現(xiàn)在可用的有 EKK 的 CAP,流體科學的 FLOW3D,美國 UES 的 PRO/CAST,以及德國的 MAGMASOFT 等[3] 。然后把所有模擬數(shù)據(jù)轉(zhuǎn)換成數(shù)據(jù)文件。在充填金屬液的過程中使用傳統(tǒng)的澆注系統(tǒng)進行澆注將會導(dǎo)致金屬液的飛濺和空氣不能及時排出。借助于 CAE 軟件的模擬和分析來優(yōu)化壓鑄件的設(shè)計,可以使壓鑄產(chǎn)品的合格率在較短時間內(nèi)得到大大提高。然后使用MAGMASOFT 軟件對模具中金屬液的流動和凝固進行模擬和分析,對壓鑄的技術(shù)方案和工藝參數(shù)進行修改和優(yōu)化。通過調(diào)節(jié)工藝參數(shù),如注射速度,冷卻介質(zhì)的流速,可以改善熱平衡和溫度分布,也減小裂縫出現(xiàn)的可能性。這些將有助于完善該專業(yè)軟件系統(tǒng)包。借助 CAE 模擬技術(shù)可以優(yōu)化壓鑄件的工藝參數(shù)和技術(shù)方案。 通過 CAE 模擬軟件對壓鑄工藝的技術(shù)方案和工藝參數(shù)進行修改和進一步的優(yōu)化,壓鑄件的質(zhì)量在較短的時間里得到很大提高。數(shù)控切割過程中的各 CL 數(shù)據(jù)文件可以進行修改,直到達到一個滿意的結(jié)果。所以,在修改設(shè)計方案時,需要控制柱塞的加速度以調(diào)節(jié)合適的注射速度,充填的時間也要短,因為充填后的增壓可以使?jié)部谔幬磥淼眉澳痰慕饘僖簩峁?jié)出的縮孔進行補縮。在這個鑄件生產(chǎn)中常出現(xiàn)的缺陷有兩種類型:氣孔和縮孔。 通過由軟件商開發(fā)的一款重要的專業(yè)軟件系統(tǒng)包進行壓鑄工藝技術(shù)方案的設(shè)計,可以對壓鑄模的工藝參數(shù),如注射壓力、柱塞速度、注射速度和充填時間進行適當?shù)倪x擇,根據(jù)合金類型的經(jīng)驗計算公式,可以對壓鑄件的壁厚和結(jié)構(gòu)進行校核?,F(xiàn)在廣泛使用的 CAD/CAM 軟件是 PTC 公司的 Pro/ENGINEER 的 CAD/CAM,EDS 公司的 Unigraphics II 的 CAD/CAM,和美國 IDEAS 的 CAD/CAM 的軟件。為了避免鑄造中的一些缺陷,可以應(yīng)用鑄造模擬軟件里的 CAE技術(shù)對鑄造過程模具中的金屬的流動和凝固進行數(shù)值模擬。使用這個集成系統(tǒng),可以縮短模具設(shè)計和制造周期,并在較短的時間里,生產(chǎn)出高質(zhì)量的壓鑄件。附 錄 A 外文文獻及譯文 Application of an integrated CAD/CAE/CAM system for die casting dies Abstract According to the concept of concurrent engineering (CE), a CAD/CAE/CAM integrated system for die casting dies is established and applied in the primary stage. The platform of the Pro/ENGINEER CAD/CAM software, the MAGMASOFT simulation software and a primary expert system for the design of the die casting process are available to establish this integrated system. A primary expert system package including a series of empirical calculation equations and data for the design of technological scheme and dies of die casting has been developed by the authors. This integrated system has been applied successfully in the design and manufacture of die casting dies for aluminum and magnesium die castings, such as the water pump of the Santana sedan. The use of this integrated system can shorten the cycle of die design and manufacture, and result in the production of high quality die castings in a shorter time. The leadtime of die castings is shortened greatly. Keywords: CAD/CAE/CAM integrated system。壓鑄件的交貨時間也大大縮短。該數(shù)據(jù)庫還提供了CAM 模具制造過程中 CNC 程序?qū)η坏拇旨庸ず途庸に璧臄?shù)據(jù),還連接了坐標測量機( CMM)應(yīng)用于測量 [ 1,2]。 鑄件 CAE 模擬技術(shù)原理的解決方法有