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雕塑曲面
相关语句
  sculptured surface
     A review of the key technologies for complex sculptured surface CNC cutting
     复杂雕塑曲面数控加工关键技术的研究进展
短句来源
     NC Rough Machining of Sculptured Surface Based on Measured Data
     基于测量数据的雕塑曲面数控粗加工(英文)
短句来源
     In this paper,the key technology for five-axis NC programming manufacturing large sculptured surface in hydro turbine's blades is introduced,which includes establishing 3-D model,the tool path generating,cutting simulation,machining process simulation and post-processing in the programming.
     介绍了大型水轮机叶片五轴联动数控加工大型雕塑曲面编程中涉及到的转轮叶片三维造型、刀位轨迹计算、切削仿真、机床运动碰撞仿真、后置变换等关键技术。
短句来源
     Reconstructing 3D figure of sculptured surface using shape from shading
     基于从明暗恢复形状的雕塑曲面三维形状重构
短句来源
     A new method for generating tool paths for rough machining of sculptured surface is presented in this paper.
     提出一种新的雕塑曲面数控粗加工刀位规划方法。
短句来源
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  sculptured surfaces
     Dynamic Simulation and Error Detection in NC Milling of Sculptured Surfaces
     雕塑曲面数控加工的动态仿真及误差检测
短句来源
     METHODOLOGY FOR TOOL COMBINATION OPTIMIZATION OF DIE/ MOLD CAVITY ROUGH MACHINING WITH SCULPTURED SURFACES AND ISLANDS
     含雕塑曲面和岛的模具型腔粗加工刀具组合优化方法
短句来源
     As Hydro turbine blade is a very complex body closed by sculptured surfaces and the operating condition of the runner is also very complicated, traditional research way was combined the simplified theoretical analysis and model test.
     由于水轮机转轮叶片是非常复杂的雕塑曲面体,转轮的工作条件也非常复杂,传统的研究方法是采用简化理论分析研究与模型试验相结合。
短句来源
     THE ALGORITHM RESEARCH OF MINIMUM DISTANCE BETWEEN TWO SCULPTURED SURFACES
     雕塑曲面间最小距离的研究
短句来源
     The result of calculation shows that the approach is stable, reliable and useful in 5-axis machining of sculptured surfaces.
     计算实例表明,上述方法稳定、可靠,在雕塑曲面五轴加工编程中,具有重要的实用价值
短句来源
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  “雕塑曲面”译为未确定词的双语例句
     Analysis of Skin Groups Curved Surface Modelling Technique
     雕塑曲面造型技术分析
短句来源
     Surface reconstruction plays an important role in many fields such as design of car bodywork, cartoon facture about sculpture surface of human faces and 3D reconstruction of medical images etc.
     曲面重建在轿车车身设计、人脸类雕塑曲面的动画制作、医学图像三维重建等领域有着广泛的应用前景 .
短句来源
     With an optimizing surface triangulation as result, this algorithm is suitable for surfaces of arbitrary topology, including nonorientable ones, hence can be applicable to visualization in scientific computing, sculpture surface modeling, and reverse engineering.
     该算法适应于包括单侧曲面在内的任意不自交的拓扑曲面集,并且重建结果是相对优化的曲面三角形剖分,可以应用于科学计算可视化、雕塑曲面造型和反求工程等领域.
短句来源
     Firstly, starting with restriction of occluding contour, based on the traditional volume intersect to realize the full expression of the restriction by using surface distortion technology, then one simple way was get for modeling of sculpture.
     首先,从分析遮挡轮廓约束入手,在传统体相交方法基础上,通过曲面变形技术实现约束条件的充分表达,得到一种简便的雕塑曲面重构方法。
短句来源
     This paper introduces the key technologies in programming of NC 5-axis machinin g for large sculpture surface of Francis hydroturbine blade including 3D modelli ng, tool path generation, cutting simulation, processes simulation, post-pr ocessing, etc.
     本文介绍混流式水轮机叶片五轴联动数控加工大型雕塑曲面编程中涉及到转轮叶片三维造型、刀位轨迹计算、切削仿真、机床运动碰撞仿真、后置变换等关键技术。
短句来源
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  sculptured surface
In such instances, it often becomes necessary to model the part using compound surfaces that consist of several individual sculptured surface patches.
      
Feature based quadrilateral mesh generation for sculptured surface products
      
A successful approach to the generation of quadrilateral surface meshes for finite element analysis of sculptured surface products is presented.
      
A procedure, based on this approach, which generates well formed meshes on sculptured surface products is described using a hollow golf club head as an example.
      
Determining the cutting conditions for sculptured surface machining
      
更多          
  sculptured surfaces
Issues in patch-by-patch machining of compound sculptured surfaces
      
Sculptured surfaces are widely used in commercial products and industrial designs because of their aesthetically pleasing shape characteristics.
      
In this paper, several fundamental issues relevant to patch-by-patch finish machining of compound sculptured surfaces are examined.
      
The practical feasibility of the proposed scheme has been verified through experiments performed on a workpiece with sculptured surfaces.
      
Non-constant parameter NC tool path generation on sculptured surfaces
      
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A new algorithm is Proposed for displaying objects consisting of Curved Su- rfaces and Plane faces with hidden lines removed. The surface of objects disp-- layed are approximated with faects and represented uniformly as polygons. The algorithm Cheeks with a few simple operations each edges against the polygons to determine the visibility. On reguest either the picture with gaid structure or profile figureis clisplayed.

本文提出计算机显示复杂表面物体,消除隐藏线的新方法。被显示的物体表面可由雕塑曲面与平面任意组合而成。对物体表面作平面近似处理之后用统一的方法来表示,因而可以简捷地直接进行边——面比较,从而区分可见部分与不可见部分,去除隐藏线。这种方法可画出网格状线框图,亦可显示物体的轮廓图。

This paper discuss a new method of calculating the minimum distance between two sculptured sur-faces.Using optimization method,the problem of collision detection between two convex surfaces is re-solved.The efficiency and realizability of this approach are analyzed.This paper is supported by exam-ples in it.

曲面间的干涉检查和间隙计算是计算机辅助布局设计、加工干涉,动态模拟的重要模块。本文提出了一种雕塑曲面间最小距离的计算方法,给出实例,并分析了算法的速度、可靠性及进一步需开发的工作等。

In the field of NC programming,it is a difficult problem to ensure that no interference occurs be-tween cutter and surface to be machined(SM).Starting from the Critical Boundary Constraint Method(CBCM) proposed in 1991 by Zhang et al[4],the authors in this paper present an extended CBCM thatcan deal with how to avoid interference between any cutter and SM in multi-axis cutter locationoffsetting.The main points of the extended CBCM are as follows:(1)By using CBCM,the initial cutter location and axis direction...

In the field of NC programming,it is a difficult problem to ensure that no interference occurs be-tween cutter and surface to be machined(SM).Starting from the Critical Boundary Constraint Method(CBCM) proposed in 1991 by Zhang et al[4],the authors in this paper present an extended CBCM thatcan deal with how to avoid interference between any cutter and SM in multi-axis cutter locationoffsetting.The main points of the extended CBCM are as follows:(1)By using CBCM,the initial cutter location and axis direction are so determined that the cuttingedge of the cutter is sufficiently near to SM.(2)The cutter is approximately represented by a finite number of spheres,which are tangent to the in-ternal surface of cutter and whose centers are taken as sample points for calculating the minimum dis-tances between the cutter and SM.(3)The above-mentioned minimum distances are the data needed for so adjusting the cutter as to sat-isfy given interference tolerance limits.The extended CBCM appears to be better in comparison with two other methods.The polyhedral machining method of Duncan et al[1]considered only one sphere at the head ofballend cutter whose axis is fixed in one(Z) direction.While,for finding minimum distance between cutterand SM,extended CBCM considers as many spheres as required and axis of cutter may be in anydirection,without subdividing SM into polyhedral of triangles.The well known APT4/SS‘swalf’method only ensures that the cutter is tangent to SM at one sec-tion circle of the cutter,so interference may still occur at other points on the cutter.The extended CBCMessentially considers as many section circles on the cutter as required,and can process more complex inter-ference cases.

论述了雕塑曲面多轴数控加工图像编程系统 GNCP/SS 的干涉处理技术.对多轴端铣、侧铣加工中的干涉现象进行分析,提出了一种以临界约束和刀具与曲面最近距离监视为基础的防干涉方法,该方法能自动确定刀轴方向并获得最大切削效率、另外,还对多轴加工中刀轴变化产生的非线性误差进行了分析,提出了以对分插值区间为基础的补偿方法.这些方法在实用中取得了满意的干涉处理效果.

 
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