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【转帖】计算机辅助几何设计与非均匀有理B样条

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31
发表于 2003-7-17 18:50:16 | 只看该作者
赶紧贴上上来,大家一起学习。::y::y::y
讲曲线曲面造型理论(数学推导)的书还有几本,讲刀具路径生成理论(能够归纳为数学公式)的书几乎没有,纵然有书提到也太简单。:!(:!(:!(
回想学习cad/cam的过程,开始纯粹是熟悉菜单,知其然不知其所以然,如同摸黑行走。幸好有sinderal指点,否则还不知在那条沟里折腾。:I:I:I
99年尝试了一下mastercam7,呵呵,熟悉熟悉菜单竟然生成刀具路径。现在看来却实是,当然极不合理,也谈不到工艺参数,当然也没有勇气拿去实践。那时也没有后处理的概念,当然不会按照自己所用机床做后处理,选择常见机床直接生成G代码,也看不懂。只好继续做其它事情!
一晃几年,去年来到这个论坛,觉得技术气氛浓厚,就留下来其它论坛也都不去了,应该感谢idesign的努力,为大家提供了一个交流学习的地方。::y::y::y
32
发表于 2003-7-17 21:31:34 | 只看该作者
下面是一篇关于nc加工的综述性的文章,作者对加工方法进行了分类并列出了各方法比较重要的文献。

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33
发表于 2003-7-17 21:45:00 | 只看该作者
如果有可能的话找找B.K.Choi在1998年出的书:"Sculptured Surface Machining- Theory and Applications",看看目录就知道它的价值了
PART I: FUNDAMENTALS OF SCULPTURED SURFACE MACHINING
  
1 Introduction to sculptured surface machining
1.1 Industrial impacts
1.2 Achievable productivity goals
1.3 Developments of related technologies
1.4 User requirement specifications
1.5 Information processing issues
1.6 High speed machining and SSM-technology
1.7 Discussion
2 Mathematical background for sculptured surface machining
2.1 Introduction
2.2 Basics of vector algebra
2.3 Coordinate transformations
2.4 Curve and surface geometry for cutter path generation
2.5 Non-parametric representation for cutter path generation
2.6 Curve differential geometry
2.7 Surface normal and first fundamental form
2.8 Surface curvatures and second fundamental form
3 Sculptured surface machining processes
3.1 Basic concepts and definitions
3.2 Machining process models
3.3 Unit machining operations (UMO)
3.4 Machining stages
3.5 UMOs for 5-axis machining
3.6 Industrial practices of sculptured surface machining
3.7 Discussion
4 Process planning for sculptured surface machining
4.1 Introduction
4.2 Process planning models
4.3 Form features in sculptured parts
4.4 Machining feature
4.5 Feature-based approach to process-planning
4.6 Discussion
5 Fundamentals of tool-path generation and validation
5.1 Introduction
5.2 Tool-path topology and milling-strategy planning
5.3 Tool-path resolution planning
5.4 Tool-path generation
5.5 Cutter-interference handling
5.6 Cutting simulation and NC verification
5.7 Cutting condition determination
5.8 Summary and discussion
PART II: TOOL-PATH GENERATION METHODS FOR SCULPTURED SURFACE MACHINING
6 Introduction to tool-path generation methods
6.1 Overview of tool-path generation methods
6.2 Overview of CC-based tool-path generation methods
6.3 CL-data computation for isoparametric tool-path
6.4 CL-data computation for Cartesian tool-path
6.5 CL-data computation for APT-type tool-path
6.6 Application of the APT-type tool-path
6.7 C-space approach to tool-path generation
6.8 Implementation issues of the C-space methods
6.9 Discussion
7 Tool-path generation for roughing
7.1 Characteristics of roughing operations
7.2 CL-surface construction for roughing
7.3 Tool-path generation procedure for pocketing
7.4 CPO-curve generation via 2D-curve offsetting
7.5 Handling of uncuts in 2D pocketing
7.6 Special topics in pocket-machining
7.7 C-space approach to collision detection
7.8 Discussion
8 Tool-path generation for finishing
8.1 Issues in finish machining
8.2 Path-resolution planning and tool-path generation
8.3 Tool-path linking for milling efficiency
8.4 Cutting-load smoothing for milling efficiency
8.5 Discussion
9 Tool-path generation for clean-up machining
9.1 Characteristics of clean-up tool-path generation
9.2 Pencil-curve detection and tracing
9.3 Pencil-curve refinement
9.4 Generation of pencil-cut tool-paths
9.5 Generation of fillet-cut tool-paths
9.6 Discussion
10 Cloud-of-points machining for reverse engineering
10.1 Overview of cloud-of-points data machining
10.2 Preprocessing of digitized data
10.3 Segmentation of data-points
10.4 Smoothing of digitized surface
10.5 Postprocessing and tool-path generation
10.6 Discussion
11 Five axis machining
11.1 Introduction
11.2 Related work and accuracy issues
11.3 Five axis tool-path generation methodology
11.4 Path-interval and cusp-height in 5-axis machining
11.5 C-space methods in 5-axis machining
11.6 Discussion
PART III: CONTROLLING ACCURACY AND QUALITY IN SCULPTURED SURFACE MACHINING
12 Geometric cutting simulation and verification
12.1 The need for simulation and verification
12.2 Alternative methods
12.3 Model implementation issues
12.4 Intersection calculations
12.5 Error detection and correction
12.6 Discussion
13 Cutting force modeling and physical cutting simulation
13.1 Introduction
13.2 Cutting force models
13.3 Mechanistic model implementation
13.4 Verification of safe machining conditions
13.5 Discussion
PART IV: SYSTEMS INTEGRATION FOR SCULPTURED SURFACE MACHINING
14 A unified CAM-system architecture
14.1 User requirement specifications for CAM-system
14.2 Basic architecture of unified CAM-system
14.3 Advanced architecture of unified CAM-system
14.4 Discussion
15 Development of integrated SSM-software
15.1 New framework for SSM-software development
15.2 SSM-system analysis and structuring
15.3 Product-design and BPR phase
15.4 Process-design phase
15.5 Cutting-condition models and tool management
15.6 Discussion
16 CAPP for sculptured surface machining
16.1 Hierarchical CAPP architecture for SSM
16.2 CAPP algorithm
16.3 CAPP example
16.4 Discussion
34
发表于 2003-7-18 09:06:04 | 只看该作者
国内的一篇文章,综述性质的,写的一般

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35
发表于 2003-7-28 12:08:30 | 只看该作者
gaotian wrote:
没有人讨论SURFCAM的问题现在还有人用SURFCAM?

  
surfcam是高端成熟之cam软件    未知兄台此话何意?
36
发表于 2003-8-26 20:22:45 | 只看该作者
另外一篇关于生成的综述性质的文章,对在绝对坐标系和在参数域内刀具轨迹生成方式做了详细的比较,而且文章比较新。

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37
发表于 2006-11-5 00:56:04 | 只看该作者
多谢分享!
38
发表于 2007-5-10 14:07:50 | 只看该作者
郁闷啊,本想下载,怎么下载不了啦。点击后提示:附件文件不存在或无法读入,请与管理员联系。
楼上哪位大仙有这本书的电子版,麻烦给我邮箱发一个huiqinglan@163.com,谢谢。
39
发表于 2007-5-22 19:20:21 | 只看该作者

我也想要一份

我想学习一下,可惜下载不了。那位大侠有,给小弟发一份,不胜感激
d_s_f@163.com
40
发表于 2007-8-16 09:43:52 | 只看该作者
我也是阿,想下载”计算机辅助几何设计与非均匀有理B样条“,已经下载不了了阿,谁有的能否给一份 pol_1999@163.com
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