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切触点
相关语句
  cutter contact point
     Secondly, on the basis of the analyses of the interference instances in processing the free surfaces with NC machining and the existing detection methods, it adopts a point-projection method with the discrete surface and combining the characteristic of the passway, sets up a plane related to passway by way of cutter axes-direction controlling, which simplifies data store and cutter contact point's axes vector range confirmation.
     然后在对自由曲面NC加工中的干涉情况和现有干涉检测方法进行分析的基础上,采用了离散曲面,基于点的投影方法,并结合通道特点,建立了与通道相关的刀轴控制平面,从而简化了数据存储问题和切触点刀轴矢量范围确定问题;
短句来源
  cutting contact point
     In the thesis, tracks programming of the cutting contact points are described in detail for the above two machining methods, including the key techniques of the determination of path interval and step length, the calculation of cutting contact point, and the interference disposal of the part boundaries and the island, which provide the foundation for the improve of the blades' machining efficiency and quality.
     本文详细介绍了上述两种加工方法中切触点轨迹规划问题的实现,其过程包括走刀行距的确定、走刀步长和切触点的确定、边界的确定和干涉处理、岛屿干涉问题的解决等关键技术,为提高叶片的加工效率和质量奠定了基础。 最终在叶片表面构造了适合四、五坐标联动机床高速加工的螺旋切触点轨迹。
短句来源
     As to the cutter with the strictly convex cutting surface,the necessary and sufficient condition for gouge-free 5-axis surface flank machining is proposed, which is that the signed Dupin indicatrix of the cutter is con- tained in the indicatrix of the part surface at the cutting contact point.
     针对具有严格凸切削刃的侧铣加工刀具,提出不发生局部干涉的充要条件是切触点处刀具曲面的正向杜邦指标线位于被加工曲面的正向杜邦指标线之内。
短句来源
  contact points
     Track Programming of the Cutting Contact Points for the Blade Spiral Machining
     叶片类零件螺旋铣削切触点轨迹规划问题研究
短句来源
     In the thesis, tracks programming of the cutting contact points are described in detail for the above two machining methods, including the key techniques of the determination of path interval and step length, the calculation of cutting contact point, and the interference disposal of the part boundaries and the island, which provide the foundation for the improve of the blades' machining efficiency and quality.
     本文详细介绍了上述两种加工方法中切触点轨迹规划问题的实现,其过程包括走刀行距的确定、走刀步长和切触点的确定、边界的确定和干涉处理、岛屿干涉问题的解决等关键技术,为提高叶片的加工效率和质量奠定了基础。 最终在叶片表面构造了适合四、五坐标联动机床高速加工的螺旋切触点轨迹。
短句来源
     Firstly, after analyzing the blisk's model structure and machining passway characteristic, combining the research of planning the algorithm about cutter contact points in the past, the paper proposes a programming algorithm suitable for the blisk of cutter contact points with constant error by the ball cutter and illustrates in detail four steps which include determining the boundary parameters, plotting the parameters of cutting lines, determining the step-length and setting off the gridding of the surface.
     本论文首先分析了闭式整体叶盘的造型结构和加工通道特点,并结合对以往切触点规划算法的研究,提出了适用于整体叶盘的、以球头刀为加工工具的等误差切触点规划算法,详细描述了算法中边界参数点确定、切削行参数划分、走刀步长确定和型值点网格化四个步骤;
短句来源
     With the basis of on the analysis of closed blisk's blade modeling method,a programming algorithm of cutter contact points with constant error based on blade high-quality modeling against twist is proposed. Four steps of algorithm are illustrated,which includes determining the boundary parameters,plotting the parameters of cutting lines,determining the step-length and setting off the gridding of the surface. The implementation of the algorithm in UG CAD and the engineering application example are given.
     在对闭式整体叶盘叶身造型方法分析的基础上,提出基于叶片防扭曲高质量造型的等误差切触点规划算法,详细描述了算法中边界参数点确定、切削行参数划分、走刀步长确定和型值点网格化四个步骤,给出了该算法在UGCAD系统中的实现及工程应用实例。
短句来源
     In the algorithm, a function equation having the radius of the circle of the parameter difference between two contact points as the independent variable is constructed to control the maximal undercut error occurring within the two contact points in multi-point contact machining. The secant algorithm is utilized to solve the equation after iterations , and then the optimal value of the circle radius and cutter location is derived.
     为了控制多点切触加工中两个切触点之间的最大欠切误差,建立了以两个切触点间参数差值圆半径为自变量的函数方程,采用割线法迭代求解该函数方程,可以得到在允许加工误差下的最优参数差值圆半径和当前的最优刀位。
短句来源
  “切触点”译为未确定词的双语例句
     Research and Implementation of Programming Algorithm of Closed Blisk's Blade Machining Contact-Points
     闭式叶盘叶身加工切触点规划算法研究与实现
短句来源
     The touch point deviates eastward with respect to the central normal of the shock source, and the deviation angle increases during the outward propagation of the shock system.
     上述切触点相对激波源中心法线东偏,且东偏角度在激波系统向外传播过程中不断增加。
短句来源
     Results show that no matter what kind of surface was machined, the tool positions calculated using multi-point machining method would not be interferential with the desired surface locally if the second tangent contact point was selected in the solution areas of multi-point machining constraint, where the corresponding principle direction had larger surface curvature.
     结果表明无论曲面为何种样式,必须选择第二切触点在曲率较大的主方向附近的解区域中,再使用多点切触加工算法算出的刀位,才有可能不发生过切现象.
短句来源
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  cutter contact point
Moreover, machining efficiency is simultaneously improved by minimising the curvature difference between the part surface and tool swept surface at a cutter contact point (CC-point).
      
  contact points
Inside the cell, the liquid forms menisci in the zone of plate contact points.
      
These polygon edges are the input for a supervised neural network model [radial basis function (RBF) or multilayer perceptions], which then defines the contact points.
      
Human beings, animals and insects can realize locomotion by changing the supported points of the legs or the contact points of the body.
      
The voluntary task of holding the object safely is realized via multi-point impedance control at the four contact points with the object using the contact force information from the sensitive skin.
      
Special attention is paid to low loading conditions, in which the number of contact points is small and the statistical models fail.
      
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The geometry of the root surface of rotation of hypoid gear is analyzed in detail. According to the calculation theory, the tangent vector, the velocity and the normal vector on a given point of the circle of tool nose are coplanar. By means of solving equations, the rotation angle of the cradle can be obtained. Thus the deviation of the dedendum is determined. Based on the theory, algorithms for strict control of dedendum of hypoid gears machined for both cutter tilt and free form milling machines have been...

The geometry of the root surface of rotation of hypoid gear is analyzed in detail. According to the calculation theory, the tangent vector, the velocity and the normal vector on a given point of the circle of tool nose are coplanar. By means of solving equations, the rotation angle of the cradle can be obtained. Thus the deviation of the dedendum is determined. Based on the theory, algorithms for strict control of dedendum of hypoid gears machined for both cutter tilt and free form milling machines have been developed. The effectiveness of the algorithms was verified by an example.

对加工螺旋锥齿轮的齿根回转面的形状进行了深入的研究 ,提出了齿根回转面的计算原理。根据此原理 ,摇盘回转时 ,刀尖圆上给定点的切线向量、绕摇盘回转的速度方向和法矢这三个向量共面。通过解方程可求得该点成为切触点时摇盘的转角 ,进而可获得该点处齿根深度的变化量。根据此计算方法分别对传统的刀倾型和Free-Form型铣齿机加工的螺旋锥齿轮 ,提出了严格控制切齿深度的有效方法。实例显示了该方法的有效性

Using a two-dimensional, ideal MHD model, this paper investigates the evolution of a slow shock in the solar wind in the heliospheric equatorial plane (2-D, 2-component model) and the heliospheric meridional plane (2-D, 3-component model) respectively. It is shown that the slow shock evolves into a shock system that consists of the original slow shock and a newly formed fast shock. The shock system is nearly symmetrical with respect to the central normal of the slow shock source in the heliospheric meridional...

Using a two-dimensional, ideal MHD model, this paper investigates the evolution of a slow shock in the solar wind in the heliospheric equatorial plane (2-D, 2-component model) and the heliospheric meridional plane (2-D, 3-component model) respectively. It is shown that the slow shock evolves into a shock system that consists of the original slow shock and a newly formed fast shock. The shock system is nearly symmetrical with respect to the central normal of the slow shock source in the heliospheric meridional plane, whereas it is asymmetrical in the heliospheric equatorial plane. There exists a touch point between the fronts of fast and slow shocks, at which the two shocks merge and degenerate into a gas-dynamic shock. The touch point deviates eastward with respect to the central normal of the shock source, and the deviation angle increases during the outward propagation of the shock system. A preliminary analysis shows that the east-west asymmetry of the propagation and evolution of the slow shock in the heliospheric equatorial plane is mainly attributed to the spiral structure of the interplanetary magnetic field.

采用二维理想MHD模型,分别在日球赤道面(二维二分量模型)和日球子午面(二维三分量模型)内研究太阳风中慢激波的传播和演化规律。结果表明,慢激波在向外传播的过程中逐渐演化为由原慢激波和新产生的快激波构成的激波系统。该激波系统在子午面内相对慢激波源中心法线基本对称,而在赤道面内则是不对称的:快激波阵面和慢激波阵面之间存在一个切触点,该处两个激波合并,蜕化为气体激波。上述切触点相对激波源中心法线东偏,且东偏角度在激波系统向外传播过程中不断增加。初步分析表明,行星际磁场的螺旋结构是产生日球赤道面内慢激波传播和演化的东西不对称性的主要原因。

A new method for subtracting the probe radius value from the measuring data was suggested,which aim at dealing with the problem occurred on shoe last measuring;Firstly,An work principle of a shoe last measuring machine was introduced;With detailed analysis of the contact geometry relationship between the surface curve of last and the last measured probe,A disposed algorithm of the measuring data was proposed.In the end,An example and a conclusion were carried out.

针对鞋楦测量时存在的数据处理问题 ,提出了一种有效的去测头半径的处理方法 ,介绍了鞋楦测量机的工作原理 ,在详细分析了鞋楦测量时测头与楦面的切触点的几何关系后 ,得出了测量数据处理算法 ,最后给出了一个实例与结论

 
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