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change gears
相关语句
  挂轮
     Selection of Change Gears in Gear Hobbing Machine Based on Visual Basic
     基于Visual Basic滚齿机挂轮选配
短句来源
     The Design and Development of Universal System of Selecting Hobbing Machine Change Gears
     通用滚齿机挂轮选配系统的设计与开发
短句来源
     Development of Selecting Change Gears of Hobbing Machine System Based on VB6.0
     基于VB6.0优化选配滚齿机挂轮系统的开发
短句来源
     Experimental research on tooth trace error resulting from differential change gears of hobbing machine
     滚齿机差动挂轮引起齿向误差的实验研究
短句来源
     Analysis for Noise of Lathe Change Gears Based on Noise Reducing Test with Lubrication
     基于润滑降噪实验的车床挂轮噪声分析
短句来源
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  变换齿轮
     Design Optimization of Weft Set Change Gears in Loom Type 1511M
     1511型织机纬密变换齿轮优化设计
短句来源
     Using this method it is possible to give 45, 93, 173, 273 regularly distributed speeds of the variable shaft with a set of only 5, 6, 7, 8 reserved change gears respectively.
     此时,只用5—8个变换齿轮就可相应地得到45—273档均匀分布的变速轴速度。
短句来源
     Many change gears are used in loom type 1511M and 1511 for varying weft set. It is possible to minimize the amount of these change gears by using optimization technique.
     1511M型织机纬密变换齿轮配有81种101只,采用优化设计,可大幅度减少变换齿轮只数。
短句来源
     OPTIMIZATION OF THE METHOD OF SELECTING THE TOOTH NUMBER SERIES IN A SET OF CHANGE GEARS Part Ⅳ:Methods of finding near-integer tooth number Series
     变换齿轮选配最优化 第四报:齿数圆整方法
短句来源
     OPTIMIZATION OF THE METHOD OF SELECTING THE TOOTH NUMBER SERIES IN A SET OF CHANGE GEARS Part Ⅰ: The Differences between Logarithms (D. B. L.) of the Tooth Numbers in a Set of Change Gears and the Regularity of their Distribution
     变换齿轮选配最优化 第一报:对数差及其分布规律
短句来源
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  交换齿轮
     According to the construction and movement of gear-machine,this paper explores the inherent regularities of the machine movement of generating process oblique-gear of prime number,and introduces the calculating principles and methods of the drive chain. The general principles of optimization on rolling and differential movement,especially limmited natural resources of change gears are put forward.
     根据滚齿机的结构与运动特点 ,探讨了滚切加工质数斜齿轮机床运动方面的内在规律 ,介绍了有关运动传动链的调整、计算原理及方法 ,特别是在有限个交换齿轮中 ,提出了优化选配范成运动与差动运动挂轮的一般原则
短句来源
  “change gears”译为未确定词的双语例句
     Selection by Computers of Change Gears of the Y3150 Hobbing Machines
     Y3150型滚齿机交换齿轮的微机选取
短句来源
     Calculation of Equivalent Load Acting on Change Gears in a Machine Tool
     机床变速齿轮当量载荷的计算
短句来源
     Optimization of speed change gears
     齿轮变速装置的优化设计
短句来源
     On the basis of numerical model of speed change gears and considering the relative error of speed change system, the target function for optimization of transmission plan by means of a computer is achieved.
     本文采取齿轮变速装置的数字化模型 ,在考虑变速系统相比误差的基础上 ,建立了包括几何参数和动力参数在内的约束条件 ,以各个变速组的中心距之和最小为目标函数 ,提出了利用计算机对齿轮变速装置进行优化的方法 .
短句来源
     Speed change gears is widely used in mechanical transmission system.
     机械传动系统中广泛使用齿轮变速装置。
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  change gears
We change gears in this second part of the article and discuss one of the oldest problems in probability theory, viz.
      
The learner/driver is asked by the driving instructor to change gears, and this request becomes the goal of the learner.
      
The Introductory Logic video series will change gears and dive you head-first into traditional Aris totelian logic.
      
Slow down smoothly, change gears as needed to keep power, but do not coast unsafely.
      
Do not stop, change gears, or change lanes while any part of your vehicle is proceeding across the tracks.
      
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It is often the case that technology demands an accurate multi-step change of the speed ratio between various parts of machines, textile machines in particular. A great many change gears are, as a rule, necessary for this purpose. It is desirable to minimize the number of such gears. In this paper, a method for determining the optimal combinations of the tooth number series in a set of change gears is proposed, with which the number of gears is decreased to a minimum with the precision...

It is often the case that technology demands an accurate multi-step change of the speed ratio between various parts of machines, textile machines in particular. A great many change gears are, as a rule, necessary for this purpose. It is desirable to minimize the number of such gears. In this paper, a method for determining the optimal combinations of the tooth number series in a set of change gears is proposed, with which the number of gears is decreased to a minimum with the precision and number of steps of the speed ratio remaining unchanged. The proposed combinations are supported by mathematical proof.This is the first of a series of reports. It deals with the regularity of distribution of the speed ratio series when a definite number of change gears are used. A table illustrating optimal combinations of the D. B. L. of the tooth numbers with corresponding goars numbers up to 20 in a set is presented. (See table 5)Let z_i be the tooth number of the i-th gear in a set of n gears, z_1>z_2……>z_n. The speed ratio between certain machine parts is determined by the formula:I_(i,j)=z_i/z_jThe D. B. L. of the tooth numbers in a set of change gears is defined as:a_(i,j)=log_φI_(i,j)= log_φz_i-logφz_jWhere φ——the common ratio of each succesive pair of steps of the changeable speed ratios. There are 3 kinds of sets A with elements a_(i,j):1) Full sequenceA={1, 2, 3,……(?),M}Where M=n(n-1)/2.It is possible only when n≤4.2) Sequence with repetitionA={1,2,3……(?)d; h_1, h_2……h_d}Where h_i, h_2, h_a h_d<(?).If h_1, h_2,……h_d>(?), then set A is defined as3) Sequence with "broken tail" (interruption towards the end of the sequence).(Shown in Fig. 1)When n>4, repetition or "broken tail" in the sequence is inevitable. It is optimal to find proper combination of z_i of n-set to give maximum (?), or minimum repetition or interruption in the sequence.Some results for this purpose are given with examples. Data of comparison between this method and the method currently used in selecting the tooth number series are shown in table 6.

生产工艺往往要求机器能够均匀而准确地变换多档速度。通常配备了许多只变换齿轮以供选用。本文提出了在保证调速精确度的前提下,使备用变换齿轮只数减至最少的齿数系列选配方法,并从数学上论证了设计方案。本文为第一部分,论述了传动比系列的分布规律,并提出了20只以下变换齿轮的齿数系列最优组合方法。

The problem in practice of determining the proper combination of z_i in a set of n change gears may be abstracted to the problem of finding the proper combination and permutation of the elements a_(i,i+1) of the set A_1 of the F. O. D. B. L. to give maximum M - d (Notations are the same as in Part Ⅰ). In part Ⅰ, we have given some results to find optimal combination of the elements of the Set A_1. In this part some rules for permuting these elements are introduced. 3 kinds of intercalated sets of the F....

The problem in practice of determining the proper combination of z_i in a set of n change gears may be abstracted to the problem of finding the proper combination and permutation of the elements a_(i,i+1) of the set A_1 of the F. O. D. B. L. to give maximum M - d (Notations are the same as in Part Ⅰ). In part Ⅰ, we have given some results to find optimal combination of the elements of the Set A_1. In this part some rules for permuting these elements are introduced. 3 kinds of intercalated sets of the F. O. D. B. L. have been found: 1. Set A_1 with even left wing (table 10); 2. Set A_1 with coincidence of both wings (table 12); 3. Set A_1 with circulated elements (table 13). In the given example, a set of 12_(+1) change gears (instead of 33 for current machines) are enough for ring spinning frames to give draft from 9.71 to 41.2 in 101 steps with step difference<2.2%, and another set of the same amount of change gears (instead of 19 for current machines) for the same machine to give twist from 190 t/m to 1314 t/m in 101 steps with step difference<3%. This method is practical and may be used for designing sets of change gears for any kind of machines (not merely confined to textile machinery). The analyses made in the paper may perhaps be useful in studying combinatorial mathematics.

本文列举了为获得一组变换齿轮齿数的最优组合时对一阶对数差的排列规则,并介绍了一阶对数差的几种嵌中系列。附有一个符合一定生产条件的变换齿轮最优齿数组合求法的详细实例。

In this paper optimum design of planetary mechanisms is worked out taking minimum volume as objective function, and the problem of choosing optimization parameters solved. Computer program used in this paper apply to standard gear teeth, as well as to teeth modified on the view point of equivalent strength, teeth modified on the view point of equivalent wear, and angular modification teeth. The mathmatical model and the method of solution mentioned are applicable to the optimum design of planetary transmissions...

In this paper optimum design of planetary mechanisms is worked out taking minimum volume as objective function, and the problem of choosing optimization parameters solved. Computer program used in this paper apply to standard gear teeth, as well as to teeth modified on the view point of equivalent strength, teeth modified on the view point of equivalent wear, and angular modification teeth. The mathmatical model and the method of solution mentioned are applicable to the optimum design of planetary transmissions of other varieties. It may be used in new designs and improved designs of products of planetary reducers, change gear boxes etc.

本文以最小体积为目标函数对行星机构进行优化设计,解决了最佳参数选择问题。所编程序适用于标准齿、按接近等弯曲强度的高变位、按等磨损观点的高变位和角变位齿。所述数学模型和解题方法亦可作为其它类型行星机构优化设计的参考。可用于行星减速器、行星变速器等产品的新设计和改进设计中。

 
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