加工方法

As to the method of the part information inputting, we use the thoughts of group technology and part characteristic, carry on some modifications on the basis of the OPTIZ system, in order that the system can show to the accuracy grade that is the deficiency of the OPTIZ system. In the processing of craft creating, the system provides the method that the OPTIZ code and the characteristic code of the part combined together to make up the information inputting.

对于其中的零件信息输入方法，利用了成组技术和零件特征的思想，在OPTIZ码的基础上进行了相应的修改，以弥补OPTIZ编码系统对工艺加工精度表示的欠缺；对零件的创成给出了OPTIZ编码和特征组合相结合的零件信息输入方法。

Epikeratophakia is a good method for correcting aphakia of children.When making corneal lens,the authors should take account of the preserving methods and time.

提示表面角膜镜片术是治疗儿童无晶体眼的有效方法，但在加工镜片时应考虑不同保存时间、方法的影响。

It was proposed that sewage sludge was converted into carbonaceous adsorbent through microwave radiation in the exist of chemical agent.

本实验利用污泥中含有大量的有机物，具备被加工成含碳吸附剂的客观条件这一特点，提出了利用微波加热化学活化的方法将污泥转变成污泥炭的新方法。

The classical cutting stock algorithm——column generation technology , and wrap up rectangle technology for abnormity are analyzed ; The development of AutoCAD with ObjectARX is studied and the generating method of cutting outline drawing and layout drawing were found out on the basis of analyses of the graph database structure of AutoCAD and the basic operation of it ; The process planning technology of plate material cutting orienting numerical control is studied a process planning method directly based on layout drawing is established ; The emulation technology in AutoCAD is studied and a kind of dynamic emulation method is put forward , which is realized by incrementally modifying graph entity ; The postposition of NC program of the integrated cutting system constructed on software plug-in is proposed , which can effectively solve the problem that it is difficult for a numerical control programming system to be common , which is caused by the difference of instruction format and control parameter between different type of numerical control machine .

分析了经典的矩形件优化排样算法——列生成法和针对异形件的矩形包络算法；研究了基于ObjectARX 的AutoCAD 开发技术，结合对AutoCAD 图形数据库结构及其基本操作的分析，给出了下料轮廓图和排样图的生成方法；研究了板材数控下料加工的工艺处理技术，建立了一种直接基于排样图进行的图形交互工艺规划方法；研究了在AutoCAD环境中的板材下料数控仿真技术，给出一种通过增量修改图形实体对象实现的动态仿真方法；提出以软插件技术构建集成下料系统的数控编程后置处理部分，能够有效解决因数控下料机床指令格式及控制参数不统一导致的自动编程软件系统不易实现通用性的问题。

Firstly, it seeks the sources from which theories have been developed, by a summary of evolution or a road-map. Secondly, it explains the two basic forms taken by traditional theories on intra-industry trade, namely, horizontal intra-industry trade model and vertical intra-industry trade model. Both models take final products as trade objects and products of same industry are thus simultaneously exported and imported among developed nations and among developed nations and developing ones.Thirdly, it points out that the theory of vertical intra-industry trade has already been expanded in scope in the area of trade between developed countries and LDCs. It shows that the implication of vertical intra-industry trade has expanded to the importation and exportation of parts and components, intermediate products or processing products produced via various working procedures or different production links within the same industry, with MNCs as carriers. It gives the summary of the methods of measuring intra-industry trade and argues that the basic method adopted by this thesis is G-L Index. In addition, GHM and Input-output Analysis are introduced to demonstrate the expansion of vertical intra-industry trade.

首先，通过整理国际贸易理论的发展脉络，寻求产业内贸易的理论渊源；其次，阐述产业内贸易传统理论的两种基本形式，水平型产业内贸易与垂直型产业内贸易的理论模型，指出两者都以最终产品为贸易对象，实现了发达国家之间或发达国家与发展中国家之间的同一产业内产品的同时进口和出口；第三，结合全球化的特点和跨国公司在国际要素分工中的基础作用，指出发达国家与发展中国家之间的垂直型产业内贸易理论已经得到拓展，表明垂直型产业内贸易涵义已发展成为以跨国公司为载体的同一产业内不同生产工序或不同生产环节的零部件、中间产品或加工产品的进口和出口；最后，归纳了产业内贸易的计量方法，指出本文的产业内贸易基本计量方法是G-L指数(格鲁贝尔-洛伊德计量法)，并在此基础上进一步说明与垂直型产业内贸易的拓展相关的计量方法包括：GHM计量法和Hummels投入-产出分析法。

Address the characteristics of non-uniform speed transmission, position function control and transmission ratio function control were presented to realize electronic gearbox. The differences between position function curve interpolation and general NC interpolation were analyzed. Considering the effect of uncontrollable continuous principal motion, interpolation slope and position function precompensation interpolation were presented. The relationship among interpolation, servo dynamic response and transmission precision was studied. The coordinate linkage relationship and electronic gearbox scheme in noncirclar gear hobbing were studied.

对电子齿轮箱实现非匀速比传动进行了研究，提出了位置函数控制与传动比函数控制两种非匀速比传动关系的实现方法；对位置函数控制方式，分析了位置函数曲线的插补与普通数控插补方法的区别，提出了插补斜率的概念与位置函数曲线的预补偿插补方法；对非匀速比电子齿轮箱传动精度进行研究，得出了插补精度、伺服系统动态性能指标与传动精度之间的关系；研究了非圆滚齿加工坐标联动的非匀速比传动关系，列出了多种可以满足要求的电子齿轮箱传动方案。4。

The experimental results show that wavelet transform method may filter effectively the background noise, furthermore, may accurately locate the fault point in time and frequency domain. It is substantially different from the traditional FFT. This method is unfastidious to the physical model of machining process, has advantages over all kinds of time series analysis method.

实验表明，小波分析方法可有效屏蔽背景噪声的影响，进而可对故障点进行较准确的时频定位，这和传统的FFT分析方法有着本质的区别，同时对刀具破损的故障提取过程不过分依赖加工系统的物理模型，与各种时序分析方法相比，具有明显的优越性。

In this dissertation the"Penalty"finite element method was employed to compute the velocity of the three-dimensional flow of power-law fluid in a profile die. In order to decrease the needed computer memory and raise the stability of numerical simulation, a set of decoupled methods such as PFEM, pseudo-body force method and transformation of momentum equation to the elliptic equation was developed to establish the general finite element equations to compute the distributions of velocity and viscoelastic stress of the three-dimensional viscoelastic flow of the Phan ThienTanner fluid in a profile die. During numerical simulation of the extrudate swell of the PTT fluid, the flow in the die and out of the die was analyzed separately, which demands less computer memory. The key techniques used in numerical simulation of the three-dimensional extrusion from dies such as decision of boundary conditions, creation of initial velocity field, selection of penalty factor, high Weissenberg number problem , regeneration of the free surface were studied in detail.

中文题名聚合物异型材口模挤出三维流动研究副题名外文题名 Study on three-dimensional flow of polymer melts during the process of profile extrusion from dies 论文作者涂志刚导师柳和生包忠诩教授学科专业材料加工工程研究领域\研究方向学位级别博士学位授予单位南昌大学学位授予日期2001 论文页码总数148页关键词挤出成型聚合物材料挤出口模聚合物异型材馆藏号BSLW /2003 /TQ320 /9 本文建立了求解挤出口模内幂律流体流动速度场的通用三维罚有限元模型；对于非线性粘弹性的Phan Thien-Tanner流体，为了降低模拟计算对计算机硬件的要求，并使模拟计算更加稳定，采用了一种去耦算法，包括罚有限元方法、拟体力方法和动量方程的椭圆类方程转化方法，并建立了求解速度场和粘弹性应力场的总体有限元方程；对于PTT流体的挤出胀大问题，提出了挤出胀大熔体口模内外分离模拟法，这样可以显著降低数值模拟对计算机硬件的要求。

The full-depth method, which is similar to the transverse method except that the grinding allowance is removed in a single pass.

全深度方法：这种方法除了一次加工就能去除磨削余量外其它与横向方法相同。

This method changes the interference analysis between gear shaper root circle and non-circular gear tip curve in manufacturing non-circular gear which is similar to that of a cylindric...

提出通过改变插齿刀的基本参数来避免干涉的方法，这种方法既可以避免刀具的齿根与非圆齿轮的齿顶的干涉，又不会引起其它的干涉现象产生，是解决非圆齿轮加工中产生干涉问题的有效方法。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。