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Visual Computing for Industry,Biomedicine,and Art 2018年第1期1卷 24-33页

作者： Sen Jiang Yingguang Li Changqing Liu College of Mechanical and Electrical Engineering Nanjing University of Aeronautics and AstronauticsNanjingChina

For thin-walled parts,uniform allowance to each machining surface is allocated by the traditional machining *** the sequence of the adjacent machining features,it may cause poor stiffness for some side walls due to a minor wall thickness,which may cause the deformation of the final formed parts to be large,or deduce machining efficiency for some machining features due to too thick *** order to address this issue,a non-uniform allowance allocation method based on interim state stiffness of machining features for the finishing of thin-walled structural parts is proposed in this *** this method,the interim state model of machining features is constructed according to the machining sequence of the parts,and the stiffness of the side wall is taken as the evaluation index to allocate reasonable allowance value to the corresponding machining surface to ensure the stiffness requirement of the parts in the machining *** to the finite element simulation results,the non-uniform allowance allocation method proposed in this paper can effectively improve the stiffness of the parts and reduce the deformation of the parts,when compared with the traditional uniform allowance machining method.

关键词： Machining features nc programming Interim state Non-uniform allowance Stiffness

MACHINING-FEATURE BASED 3-AXIS AUTOMATIC nc programming FOR HIGH-SPEED MILLING

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Transactions of Nanjing University of Aeronautics and Astronautics 2007年第2期24卷 150-156页

作者：孙全平汪通悦廖文和何宁淮阴工学院数字化制造技术实验室南京航空航天大学机电学院

Machining-features of the workplace are described by using of the object-oriented （O-O） technology. Geometrical machining-features are recognized in the given cut region by using the maximum membership priciple about the fuzzy set. Depending on the IF-THEN rule and the fuzzy matching method, the rough information of the machining-process for high-speed milling （HSM） is extracted based on the database of machining-process for HSM. The optimization model of machining-process scheme is established to obtain shorter cut time, lower cost or higher surface quality. It is helpful to form successful cases for HSM. nc programming for HSM is realized according to optimized machining-process data from HSM cases selected by the optimization model and the extracted information of machining-process.

关键词： high-speed milling machining-feature) process-knowledge nc programming

nc programming SYSTEM FOR MASS CUSTOMIZATION

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NC PROGRAMMING SYSTEM FOR MASS CUSTOMIZATION

Image Based nc programming of Plane Contour Machining

2005年中国机械工程学会年会

作者： XU Xinsheng, FANG Shuiliang, WU Shengyong, GU Xinjian (Inst. of Contemporary Manufacturing Eng., Zhejiang Univ., Hangzhou, 310027)

＜正＞In the new and emerging mass customization （MC） strategy, companies provide customized products or services on the basis of flexible manufacturing and modern information technology （IT）. This paper focuses on the rapid design and automatization issue of nc machining program. An nc programming system for mass customization was investigated and employed to construct master nc program of part family and nc machining program of variant part generates rapidly. The purpose is to increase the development efficiency of nc machining program in mass customization company and make the nc machining program meet the variant design of part. In order to expedite the implementation of such a system, the nc programming principle for mass customization was researched. The model of master nc program was presented based on the definition of machining feature and the design of nc subprogram base. In addition, the content and structure of master nc program were analyzed. Then a prototype system was designed and its function model was presented on the basis of CAD system and PDM system. Finally, a case study on bearing cover was carried out to verify the validity of this system.

关键词： mass customization nc programming master nc program variant design

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Computer Aided Drafting,Design and Manufacturing 2000年第2期10卷 41-44页

作者： Hu Zhanqi (Mechanical Engineering Institute, Yanshan University, Qinhuangbao 066004, China) nc Tool Path Generation

Simplified Hough Transform (HT) and Adaptive Including Box (AIB) approach are proposed. The size of AIB is controlled according to the precision requirement of machining. The image data of part contour is turned into ... 详细信息

关键词： nc programming contour machining image data

ESTIMATING　THE　CUTTER＇S　MAXIMUM　DIAMETER　IN　5－AXIS　nc　FACE　MILLING　OF　TURBINE　BLADES

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Computer Aided Drafting,Design and Manufacturing 1996年第2期6卷 57-64页

作者： Li Ming Zhu Xinxiong(Department of Manufacturing Engineering Beijing University of Aeronautics and Astronautics Beijing,100083)P.R.China

Based on the principles of differential geometry,the basic equations are derived for generating gouging free tool path in 5-axis nc face milling,the influence of surface's local geometry is discussed,and the condition... 详细信息

关键词： ss:gouging free cutting multi-axis machining nc programming tool path generation

Directly Generating the nc Machining Program from AutoCAD Graph

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厦门大学学报（自然科学版） 2002年第S1期41卷 139-页

作者： GUO Jian-feng, ZHU Lin (Department of Mechanics, Xi’an Petroleum Institute, Xi’an 710065, C hina)

One kind of auto-programming method directly gener at ing the nc machining program by AutoCAD graph is discussed in this article. Firs tly, the article discusses the open type graphic interface of AutoCAD. Then the graphic export among the AutoCAD, the adding of process information and the data storage, as well as technology of generating nc program has been introduced . Finally, a nc auto-programming system GAPS based on AutoCAD graph is develope d. The tendency of auto-programming is graphic auto-programming, because it posse sses these merits that the programming in the system is simple and the graph is perceived easily and the graphic data can be shared in many auto-programming sy stems. It is well known that AutoCAD is widely used graphic software in machiner y at present. The AutoCAD plotting function is more powerful than other special drawing-software in auto-programming system, and has provided the convenient o pen data interface for development of software. The AutoCAD has several kinds of open data graphic interfaces, and these interfaces are general among different versions. Chiefly, there are ASCII’s graphic exchange file (.dxf ) and the bina ry system graphic exchange file (.dxb ) in AutoCAD. We discuss the second fi le format right off here. The technology generating the nc machining program from AutoCAD graph is accompl ished by four relatively independent modules. In the auto-programming, nc progr am designer firstly carries on technology analysis to the part-drawing to estab lish the drawing scheme for auto-programming, later draws out the detail diagra m based on the analyzed in AutoCAD system. The graphic data is converted to the recognizable data structure in the system by the graphic data conversion module in the auto-programming system. Then the new data is joined process information at the process control module of system, and forms the cutter-orbit data. The cutter-orbit can generate the nc program as a result of the handle of the post -proc

关键词： AutoCAD nc programming auto-programming