Noteheads may be black ( a circular or oval shape filled in) or white and are used on the staff to indicate pitch. 符头可以是黑色的(圆形或卵形)或白色的,用在五线谱上以表明音高。
To solve the problem of inline measuring hobs with bigger modulus in practice production, an inline measuring system for the circular pitch error of hobs is introduced. 为了解决实际生产中大模数滚刀的在线测量,提出一种滚刀容屑槽周节误差测量系统。
The deviation between actual measured pitch value between any adjacent tooth surface and theoretical circular pitch. 实测任何相邻的两个齿间的径节值与理论径节值的偏差。
Special worm gear hobs with circular tooth, double pitch and involute etc, can also be ordered. 圆弧齿、双螺距、渐开线等特殊蜗轮滚刀也可以订货。
These experiments were designed by using orthogonal method in the study, and nine kinds of circular saw blades were trial-manufactured, with different tooth pitch, hook angle and top or face bevel. 通过正交设计法安排试验,设计试制了九种不同齿距、不同前角及不同斜磨角的硬质合金圆锯片,旨在研究这些参数对空转圆锯片噪声的影响。
By means of analyzing the mathematical expressions, the projective drawing and the error curves, the appropriate limits and conditions of using the circular pitch arc in place of hyperbola on the projective drawing are given in this paper. 通过对正交两圆柱表面交线的数学表达式及投影图、误差曲线图等多方面的考察分析,提出在投影图上使用圆弧代替双曲线的合适范围与条件。
Sometimes, in order to simplify the drawing and projective drawing on the parallel and the common symmetrical plane, the circular pitch arc, which is the longer radius of the two cylinders, is often used in place of hyperbola. 有时,为了简化作图,在平行其公共对称平面的投影面上的投影往往采用以两圆柱中较大圆柱半径为半径的圆弧代替双曲线。
In the operation of the gear, the meshing stiffness varies periodically along with the axial circular pitch, and the amplitude of the variation is rather large, therefore high noise is produced in gear meshing. 在齿轮工作过程中,啮合刚度是以轴向周节为周期变化的,且变化幅度较大,因此啮合噪音较大。
Analysis shows that the distribution of meshing points is a function of the axial circular pitch, the axial space of two meshing points on a tooth and the effective width of the gear. 计算分析认为,双圆弧齿轮的啮合点分布情况是齿轮的轴向周节、同一轮齿上两啮合点在轴向的距离和齿轮的有效宽度的函数。
This paper first present concept of new type damping spring, then through four types circular spring's experiment when filled with tinsel and soaked with pitch, to study its vary rules of damping. 本文首先提出了新型阻尼弹簧的概念,通过对4种不同规格圆柱螺旋弹簧塞金属丝和浸沥青的试验研究,探讨了其阻尼变化规律。
Date Processing of Individual Circular Pitch Error and Total Cumulative Pitch Error Based on VC Condition 基于VC环境下对单个齿距偏差和齿距累积总偏差实验的数据处理
New Method for Measuring Circular Pitch Error of Hob 一种测量滚刀容屑槽周节误差的新方法
This paper introduces a principle of how to measure individual circular pitch error and total cumulative pitch error, at the same time comparative method is put forward. 文章介绍了单个齿距偏差和齿距累积总偏差的测量原理,同时也介绍了相对法的测量方法。
Circular AMDF and Pitch Estimation Based on It 循环AMDF及其语音基音周期估计算法
This paper introduces how to adopt the technology of encoder stripe number amplification and software compensation of graduation gear circular pitch error, to make high-precision graduation in gear grinding machine principal axis. 采用编码器条纹数放大和对分度齿轮的周节误差进行软件补偿的方法,可实现锥面砂轮磨齿机主轴的高精度分度。
Study on meshing state in incomplete meshing of synchronous belt of circular tooth with varied pitch diameter method 用变节径法研究圆弧齿同步带不完全啮合区传动状态
Thinking based on comparison of measured gear data and standard digital gear model, the individual circular pitch error, base tangent length error and profile error of measured gear are tested. 基于实测齿轮数据与标准数字齿轮模型对比的思想,实现了实测齿轮的齿距偏差,公法线长度偏差以及齿形误差参数的检验。
On this basis, a extended interpolation method was proposed to fit involute, which is intersected at the arbitrary circular and established mathematical model of calculating pitch deviation. ( 4) A relative polar angle method of measuring points was presented to calculate spiral deviation. 在此基础上,提出了广义延拓逼近法拟合渐开线与任意圆弧交点法,建立了计算渐开线齿轮齿距偏差的数学模型。
In this paper, multi-parameters ( short-time energy, short-time zero-crossing rate and autocorrelation function values) combination has been adopted to judge the unvoiced/ voiced of speech signal. Then circular average magnitude difference function has been used to calculate pitch. 采用基于多参数组合方法(短时能量、短时过零率、自相关函数值)进行语音信号清浊音判别,利用循环平均幅度差函数进行基音周期计算。
The shapes of each tooth of the gear is different, so the transmission meshing characteristics of the non-circular gear are more complex than the circular gears, such as meshing line direction, pitch curve to the radius value, such as tooth profile equation are time-varying. 对于非圆齿轮传动来说,由于齿轮每个齿的形状各异,其传动啮合特性要比圆齿轮复杂很多,如啮合线方向、节曲线向径值、齿廓方程等都是时变的。