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   布尔运算的 在 金属学及金属工艺 分类中 的翻译结果: 查询用时:0.081秒
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布尔运算的
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  boolean operations
    5. By extending Interior Radius Vector Sweeping and combining with Boolean operations, smoothing the convex cavities in the multiply connected domain has been studied.
    5.将内点极径扫描法进行推广,并采用布尔运算的方式,研究了复连通域的磨光问题。
短句来源
  boolean operation
    Research and Implementation of NC Lathing Dynamic Simulation System Based on Boolean Operation
    基于实体布尔运算的车削仿真系统的研究与实现
短句来源
    This thesis implements the simulation of numerical control(NC) turning through computer simulation technology and boolean operation method.
    本文主要通过计算机仿真技术和布尔运算的方法来实现数控车削加工过程仿真。
短句来源
    This thesis finishes the simulation of NC turning through computer simulation technology and boolean operation method.
    本文主要通过计算机仿真技术和布尔运算的方法来实现数控车削加工过程仿真。
短句来源
    This paper mainly introduces the construction design of the NC lathing dynamic simulation system based on Boolean operation, develops this system by using the solid modeling and 3D graphic display and simplifies the construction of tool swept volume, and calculates the Boolean difference of the swept volume with the rawstock.
    主要介绍了车削仿真系统的结构设计 ,并采用实体建模与三维图形显示技术 ,在合理简化的基础上构造刀具轨迹扫略体 ,与毛坯进行布尔差运算 ,实现了基于实体布尔运算的仿真系统。
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  “布尔运算的”译为未确定词的双语例句
    The technology of database and feature parameter has been integrated to design parts which consist of progressive die. The Boolean method has been adopted to finish the assembly drawing of progressive die.
    系统采用数据库管理与特征参数相结合的方式进行模具零件设计以及布尔运算的方法进行图形装配,完成了三维级进模装配图的设计。
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  boolean operations
Finally, the 3D integrated model was established by Boolean operations between 3D geological objects and engineering objects.
      
One challenge is to generate valid models at various LODs after an arbitrary rearrangement of features using a certain LOD criterion, because composite Boolean operations consisting of union and subtraction are not commutative.
      
Nicolog compiles a very general class of built-in constraints into equivalent sets of PCs, allowing an arbitrary mixture of integer (easily extensible to real) and Boolean operations.
      
Arithmetic expressions for switching functions are introduced through the replacement of Boolean operations with arithmetic equivalents.
      
In particular we settle two open questions of [1] concerning the derivability of inference rules for Boolean operations on the right side of multivalued dependencies.
      
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  boolean operation
Inspired by digital technique, we introduce two kinds of boolean operation into GA to develop a novel mutation operator and discuss its contribution to preventing the loss of critical alleles.
      
This separation makes the Boolean operation process simple and robust.
      
Using Graftree, the Boolean operation produces no risk of yielding topological conflicts, which often cause the simulation to stop abnormally.
      
The method has been powered adding a multi-layered, bit-masking oriented data structure and a boolean operation based control mixer, allowing special blended crossover operators obtained by superposition of the standard ones.
      
Then, through a Boolean operation of the splint blank and the maxilla-mandibula model, the dental splint model is formed.
      
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The machining fundamentals and the equation for the locus of a variable-ratio gear sec-tor are presented. Based on the visual effects, a new method for representing the tooth con-tour is proposed, which splits a gear sector into a finite number of segments,thus overcom-ing the difficulty in expressing the everincreasing information during tooth machining.TheBoolean calculation and the tooth contour generation are described.According to the machin-ing features, the technique of constructing a 3-D solid from a...

The machining fundamentals and the equation for the locus of a variable-ratio gear sec-tor are presented. Based on the visual effects, a new method for representing the tooth con-tour is proposed, which splits a gear sector into a finite number of segments,thus overcom-ing the difficulty in expressing the everincreasing information during tooth machining.TheBoolean calculation and the tooth contour generation are described.According to the machin-ing features, the technique of constructing a 3-D solid from a 2-D figure is used to speed upthe simulation calculation. An algorithm for quick renewal of a graph is worked out,whichmakes it possible to perform real-time tracing of a machining process.

介绍了变比齿扇加工原理,给出了其运动方程。提出了一种基于视觉效果的齿扇轮廓表示方法,解决了齿扇加工过程中信息量难以表达的问题。基于这种表达方法,介绍了有关布尔运算算法和轮廓生成方法。并针对齿扇加工特点从二维图形构造三维实体,大大简化了仿真计算。提出了一种快速有效的图形更新算法,使加工过程实时跟踪成为可能。

The parameterized design of tool dies is an fort approach for implementation of a CAD/CAM integrative system. A 3D parameterized system for the design of automobile inner door mould is developed using the Visual C + + 4.2 program language on the AutoCAD R14 plaiform. In order to control the shape of the blankholding surface exactly, a method of increasing additional points is adopted, which also speeds up the drawing calculation.The three dimensional solid model drawings of female die, male die, blankholding...

The parameterized design of tool dies is an fort approach for implementation of a CAD/CAM integrative system. A 3D parameterized system for the design of automobile inner door mould is developed using the Visual C + + 4.2 program language on the AutoCAD R14 plaiform. In order to control the shape of the blankholding surface exactly, a method of increasing additional points is adopted, which also speeds up the drawing calculation.The three dimensional solid model drawings of female die, male die, blankholding ring and discharging device are generated by means of Bool operation. The dimensions of every part of the mould are parameterized and can be changed according to the desired 3D soid mould drawing. The develoed paramterzed design system embodies the designer's intention fully and can easily transfer data to a machining system for tool dies.

模具的参数化设计是实现模具CAI/CAM一体化的重要途径.以AutoCADR14为平台,VisualC++4.2为工具,开发了汽车门内板拉深模三维参数化辅助设计系统,特模具各部分以参数的方式进行处理.运用作附加点的方法,精确控制了曲压料面的形状,提高了图形的生成速度.应用实体造型技术,通过图形的三维变换、布尔运算,完成了凹模、凸模、压边围、卸料装置等的三维实体造型.该系统可灵活调整模具的各部分尺寸参数,优化模具设计,并将模具图进行真实感显示,充分体现设计者的意图,同时可为模具加工系统传送数据.

A cuboid - unit representation based on a view - coordinate system is proposed for expression of workpiece and tool at a given precision, complex 3 - dimension Boolean operaions are thus reduced to 1 - dimension,and simulation of multi - axis NC machining is realized. This algorithm is tested by simulating the machining process of a turbo wheel.

生产自动化是先进制造技术的发展方向之一,而可靠的数控程序是实现自动化的重要保证,针对当前数控程序检证算法的不足,提出了一种基于观察坐标系的长方体单元表示法,在精度要求范围内对工件和刀具进行近似表示,将复杂的三维布尔运算简化为一维的布尔运算,从而在微机上实现了多轴数控加工过程仿真,并提高了仿真速度,该算法通过了实验验证.

 
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