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 对称凸轮
 symmetrical cam
 Deviation Calculation of the Highest Point of the Symmetrical Cam 对称凸轮最高点偏差计算 短句来源 This paper presents a calculation method,one dimensional search to find the highest point of the symmetrical cam. 笔者介绍一种采用一维搜索法，寻找对称凸轮最高点的计算方法。 短句来源 This paper is intended to present the minimum varicance method that can be used to detect the position of unsymmetrical or symmetrical cam centerline. 本文提出一种可测量非对称凸轮和对称凸轮中心线位置的最小方差法。 短句来源 A model of two dwell symmetrical cam curve with parameters is designed. Using orthogonal calculation method, we get three groups of different parameters, for which the corresponding cam curves are better than the modified trapezoid curve, the modified sine curve and modified constant velocity curve separately. 设计一含参数的双停留对称凸轮曲线模型，用正交法计算，得到三组不同参数，它们相应的凸轮曲线分别优于变形梯形曲线，变形正弦曲线和变形等速度曲线 短句来源 Based on the single mass dynamics model, the analytical functions of hepta polynomial dynamic cam have been conducted. A program of cam profile design has been compiled on MATLAB and taking a detailed high speed diesel engine as an example, symmetrical cam profile design has been conducted. 基于单质量动力学模型,推导七项式动力凸轮型线的解析式,利用MATLAB语言编制出设计程序,并以具体的某高速柴油机为例,给出对称凸轮型线的设计结果。 短句来源
 symmetric cam
 There are many cam test systems in the market, but specific system for the symmetric cam has not been developed yet. 市场上已有各种凸轮测量仪,但是还没有专用的对称凸轮测量仪。 短句来源 Designs a new double-stop symmetric cam curve. 设计一种双停留对称凸轮曲线。 短句来源
 “对称凸轮”译为未确定词的双语例句
 Computer Aided Testing Technology and Device for Symmetric Cams 对称凸轮计算机辅助测量技术与装置 短句来源 For various reasons,there exist the highest position errors in the process of the imitating measurement of the symmertrical cam. 在对称凸轮仿制测量时，由于各种原因，测量的最高点位置总存在误差。 短句来源 A New Way of Processing the Symmetric Cam-Expansion Method 对称凸轮加工新工艺—“展成法” 短句来源 Design Method on Symmetrical MFB-Ⅱ Cam Profile of Vehicular Engines 柴油机用复合摆线Ⅱ型对称凸轮设计分析 The advantages and disadvantages of many test methods of cam are analyzed, and the mechanical part of the CAT is introduced. 本文详细分析了几种凸轮测量方法的优劣性,介绍了在对称凸轮计算机辅助测量仪机械本体的研发过程,阐述了用三次B 样条曲线拟合凸轮轮廓线,并得出凸轮的实际轮廓度和对称度,在最后分析了凸轮测量中的误差产生的原因。 短句来源 更多

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 In this paper,the forming theory of grinding vibration waviness of earn profile for CA141 automobile engines is studied experimentally and theoretically.Some results different from present documents are obtained.This paper points out that the forming of vibration waviness of grinding is not because of large or small grinding force but large or small variety ratio of grinding force.The vibration waviness of symmetry earn is not symmetry, the position of the viberation waviness does not certainly appear at the... In this paper,the forming theory of grinding vibration waviness of earn profile for CA141 automobile engines is studied experimentally and theoretically.Some results different from present documents are obtained.This paper points out that the forming of vibration waviness of grinding is not because of large or small grinding force but large or small variety ratio of grinding force.The vibration waviness of symmetry earn is not symmetry, the position of the viberation waviness does not certainly appear at the sensitivity poied and joints among curves etc. All these can be explained with the point that the grinding vibration waviness is due to large variety ratio of grinding force.The way of eliminating and reducing grinding vibration waviness is also discussed. 对ＣＡ１４１汽车发动机凸轮廓面磨削振纹形成机理进行了实验和分析研究，得出了与现有文献不同的结论。指出磨削振纹的形成不在于磨削力的大小，而在于磨削力变化率的大小。对称凸轮的振纹并不对称；振纹的位置并非一定发生在敏感点和曲线分段处等现象都可用磨削振纹是由于磨削力变化率过大引起的观点加以解释。还提出了消除和减少磨削振纹的途径。 In this paper, kinematics of upper air valve unit is analyzed. The displacement, velocity and acceleration of air valve are calculated by accurate and approximate methods. The solutions by different methods are almost identical. It is found that the displacement, velocity and acceleration of air valve are unsymmetrical although the shape of cam is symmetrical. 对顶置式气门机构进行了运动学分析，通过平底推杆的运动规律求得气门的升程、速度和加速度，分别给出了精确解和近似解。两种方法的计算结果基本吻合。计算结果表明，对称凸轮会得到一个不对称的气门运动规律。 This paper presents a symmetric valve driven FB-Ⅱ cam design and calculate procedure. Dynamic calculating method used to check its all kinds of properties including elastic change, during its different working conditions. We carefully select and optimize the performance and character parameters for the FB-Ⅱ cam. Properties of this air exchange gear can change greatly as the engine speed changes. According to the calculated results, with higher ample factor, FB-Ⅱ cam is an ideal selection for engine with a speed... This paper presents a symmetric valve driven FB-Ⅱ cam design and calculate procedure. Dynamic calculating method used to check its all kinds of properties including elastic change, during its different working conditions. We carefully select and optimize the performance and character parameters for the FB-Ⅱ cam. Properties of this air exchange gear can change greatly as the engine speed changes. According to the calculated results, with higher ample factor, FB-Ⅱ cam is an ideal selection for engine with a speed not high than 3000 r/m. 针对传统运动学计算不足以准确描述配气机构各零部件的运动规律的问题,阐述了对用复合形法优化了的FB-Ⅱ凸轮,利用单自由度模型对FB-Ⅱ型对称凸轮的下置凸轮轴式配气机构进行动力学计算.计算结果表明,在工作状态下,配气机构各个零部件会发生较大变形;当凸轮轴转速变化时,配气机构各相关参数会发生相应的变化.FB-Ⅱ凸轮配气机构具有较大的丰满系数.FB-Ⅱ型线凸轮对转速低于3000r/min的柴油机是一种比较理想的选择.
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