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| 1 | Slicing Recognition of Aircraft Integral Panel Generalized Pocket显示文摘自动地在数字控制(NC ) 获得一个用机器制造的区域编程,概括衣袋的一个数据模型被分析飞机积分面板特征,和一条特征识别途径建立被建议。由一块飞机积分面板的实际用机器制造片的进程的参考,首先,部分和空白在 Z 轴方向被切;因此特征侧面根据切的飞机被创造,轮廓被切的飞机的交叉与部分和它的空白形成。第二,概括衣袋的辅助特征也基于脸类型和位置被决定,到改正衣袋的侧面。最后,概括袖珍特征关系树被在特征之中匹配垂直关系构造。用机器制造使用这个方法生产的特征信息能直接被用来计算切割器路径。方法的有效性和有实行可能被 NC 编程为飞机面板验证。 | Yu Fangfang DU Baorui Ren Wenjie Zheng Guolei Chu Hongzhen | 2008 | Chinese Journal of Aeronautics2008，21，6： | 15 |
| 2 | Process-scheme-driven automatic construction of NC machining cell for aircraft structural parts显示文摘In order to enhance the NC programming effciency and quality of aircraft structural parts(ASPs),an intelligent NC programming pattern driven by process schemes is presented.In this pattern,the NC machining cell is the minimal organizational structure in the technological process,consisting of an operation machining volume cell,and the type and parameters of the machining operation.After the machining cell construction,the fnal NC program can be easily obtained in a CAD/CAM system by instantiating the machining operation for each machining cell.Accordingly,how to automatically establish the machining cells is a key issue in intelligent NC programming.On the basis of the NC machining craft of ASP,the paper aims to make an in-depth research on this issue.Firstly,some new terms about the residual volume and the machinable volume are defned,and then,the technological process is modeled with a process scheme.Secondly,the approach to building the machining cells is introduced,in which real-time complement machining is mainly considered to avoid interference and overcutting.Thirdly,the implementing algorithm is designed and applied to the Intelligent NC Programming System of ASP.Finally,the developed algorithm is validated through two case studies. | Chen Shulin Zheng Guolei Zhou Min Du Baorui Chu Hongzhen | 2013 | Chinese Journal of Aeronautics2013，26，5： | 4 |
| 3 | Effects of arsenic trioxide on drug transporting molecules in multidrug resistance malignant neoplasma MR2 cell line显示文摘客观:在药的表示上学习砷三氧化物(As_2O_3 ) 的效果搬运分子在多药抵抗恶意的瘤一根 acutepromyelocytic 白血病(APL ) MR_2 房间线。方法:对 all-trans retinoic 酸(ATRA ) 和 non-ATRA 抵抗的 MR_2 抵抗 APL 房间线 NB4 被使用。P-glycoprotein (Pgp ) 的表情,多药抵抗蛋白质(MRP ) 和肺抵抗相关的蛋白质(LRP ) 被检测 byimmunocytochemical 试金。结果: Pgp 的表示在 NB4 (10%-20%)比那在 MR_2 (30%-40%)是显著地更高的( P < 0.001 ),并且 MRP 的表示在 MR_2 也是更高的( 56.9 ±3 .4 ~ 21.2 ± 1.1 )比那在 NB_4 ( 20.6 ± 5.3 ~ 16.7 ± 1.2 )( P < 0.001 )。As_2O_3 变化 from0.5-2.0 μ m ol/L 能显著地减少 Pgp 和 MRP 的表情。在 MR_2 房间线的 Pgpand MRP 的表示否定地与行动 ofAs_2O_3 的剂量和持续时间被相关。结论:Pgp 和 MRP 可以是到 overcomedrug 抵抗的 As_2O_3 的敏感目标。ATRA 可能是 Pgp 和 MRP 的底层。 | Xiaoping Qian Baorui Liu Yang Yang Lifeng Wang Zhengyun Zou Weiwei Kong Juan Du | 2006 | Journal of Nanjing Medical University2006，20，3： | 3 |
| 4 | Principal Face-based Recognition Approach for Machining Features of Aircraft Integral Panels显示文摘Feature recognition aims at extracting manufacturing features with geometrical information from solid model and is considered to be an efficient way of changing the interactive NC machining programming mode.Existing recognition methods have some disadvantages in practical applications.They can essentially handle prismatic components with regular shapes and are difficult to recognize the intersecting features and curved surfaces.Besides,the robustness of them is not strong enough.A new feature recognition approach is proposed based on the analysis of aircraft integral panels' geometry and machining characteristics.In this approach,the aircraft integral panel is divided into a number of local machining domains.The machining domains are extracted and recognized first by finding the principal face of machining domain and extracting the sides around the principal face.Then the machining domains are divided into various features in terms of the face type.The main sections of the proposed method are presented including the definition,classification and structure of machining domain,the relationship between machining domain and principal face loop,the rules of machining domains recognition,and the algorithm of machining feature recognition.In addition,a robotic feature recognition module is developed for aircraft integral panels and tested with several panels.Test results show that the strategy presented is robust and valid.Features extracted can be post processed and linked to various downstream applications.The approach is able to solve the difficulties in recognizing the aircraft integral panel's features and automatic obtaining the machining zone in NC programming,and can be used to further develop the automatic programming of NC machining. | YU Fangfang ZHENG Guolei RAO Youfu DU Baorui CHU Hongzhen | 2011 | Chinese Journal of Mechanical Engineering2011，24，6： | 1 |
| 5 | Microstructure and Mechanical Properties of Nickel‑Aluminum Bronze Coating on 17‑4PH Stainless Steel by Laser Cladding显示文摘Bimetallic copper-steel composite could be an effective structural material to improve the performance of traditional nickel-aluminum bronze(NAB)ship propeller due to its high structural strength and corrosion resistance.In this work,the defect-free NAB coatings has been successfully fabricated by laser direct depositing technique on the 17-4PH stainless steel substrate.The phase constitution,microstructure characteristics and hardness properties were investigated in details.The XRD results showed that the coatings mainly consisted ofα-Cu,Fe and intermetallicκphases despite the diffraction peaks shifted more than 0.5°,which may due to the influence of the Ni,Fe and Al atoms dissolved into Cu-matrix.The microstructures of the coatings were affected significantly by laser energy density according to SEM and EDS results.The top region of the coating was more undercooled during solidification,therefore the grains at this region was much finer than that at the bottom region.The higher energy input would lead to coarser grains.Fe-rich dendrites and spherical particles were found in the Cu matrix,which could be a result of liquid separation.The hardness of the coating is in the range of 204 HV0.2–266 HV0.2 which is higher than traditional as-cast NAB.The uneven distribution of Fe-rich phases as well as the hardκphases could be the main reasons for the fluctuations of the hardness value.Tensile fracture occurred at bronze side,not at transition zone,which shows there is a good interfacial bonding between the two metals produced by laser cladding. | Lu Zhao Baorui Du Jun Yao Haitao Chen Ruochen Ding Kailun Li | 2022 | Chinese Journal of Mechanical Engineering2022，35，6： | 0 |
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