加工方法

The advantage of CFD numerical simulation especially displays in the development of the new products, it not only can replace theroutine experiment and offer various kinds of flow characteristic parameters by a large margin , It not only can replace conventional experimental substantially provide various flow parameters, and reveals through three-dimensional flow field pattern to optimize design based on detailed. CFD numerical simulation in this text applications will greatly enhance the cage control valve design and the technical level and product quality, reducing cage control valve design and processing cycle, significant cost savings, And optimizes through the flow channel, to reduce fluid flow through the valve of energy loss, improving efficiency in the use of energy have the extremely vital significance.

CFD数值模拟的优势尤其表现在新产品的研制开发中，它不但能大幅度取代常规实验提供各种流动特性参数，而且能通过揭示流场三维分布形态为优化设计提供详细依据；文中所采用CFD方法必将大大提高套筒型调节阀设计的技术含量与产品质量，可缩短调节阀的设计和加工周期，节省大量成本，并且通过流道优化，对降低流体流过调节阀的能量损失，提高能源利用率等具有十分重要的意义。

A novel environmental protective urea-formaldehyde resin and a preparation method belong to the field of wood processing adhesives.

一种新型环保脲醛树脂及制备方法属木材加工的胶粘剂领域。

A new method to machine straight bevel gear on gear-hobbing machine with a new type of cutting tool, which is named variable modulus hob, is described in this paper.

介绍了1种新型刀具&变模数滚刀&在滚齿机上加工圆锥直齿轮的新方法。

This paper advances the viewpoints and methods of the rapid sample product trial manufacture technique for water meter new products on CAD and simulation, computer virtual assembling and optimizing, rapid machining process and measurement etc.

对当前水表新产品的设计与样机试制工作中存在着诸如开发周期长、开发效率低、人工参与多等现状，提出了基于计算机辅助设计与仿真、虚拟装配与优化、快速加工与测量为主体的水表新产品快速试样技术的观点和方法。

On applying the theory of differential geometry, the research shows the procedure for determining the required cutter path for cutting conical cam profile using a NC milling machine based on the analytical profile expression of conical cam with oscillation conical roller follower or with a translating conical roller follower established in 3D space. The analytical expression of cutter path is provided for a tapered endmill cutter, whose size may be identical to or smaller than that of the conical roller.

应用微分几何理论，以在3维空间所建立的圆锥滚子摆动从动件和直动从动件圆锥凸轮机构凸轮廓面的解析表达式为基础，对数控铣床加工圆锥凸轮廓面所需刀具轨迹方程的建立方法进行了研究，根据所采用的锥形刀尺寸等于或小于圆锥滚子尺寸的情况，推导出相应的刀具轨迹方程的解析表达式。

A milling method of space index cam s on 2-Axis NC machine;2. In this paper some equations of moving track of tool to mill different space index cam s are presented and can be directly applied to practice.

给出了加工各种空间分度凸轮的刀具运动轨迹方程，可以直接应用于生产实际，并介绍了在 Auto CAD上实现空间凸轮刀具中心轨迹的动态仿真和三维几何造型的方法。

Fitter is the main tool for hand-held clamp fitter in Vise on the table for cutting the work methods, it is the machinery of one of the important types of work.

钳工是主要手持工具对夹紧在钳工工作台虎钳上的工件进行切削加工的方法，它是机械制造中的重要工种之一。

In the intense market environment, SMEs are in the situation of being surrounded by tiger and wolf. They are far away from economies of scale in large enterprises, however, failed to catch up with foreign companies advanced management methods.

在激烈的市场环境中，中小型加工制造企业的处境是前有虎后有狼，比不过大企业的规模经济，追不上外国企业的先进管理方法。

But a breeding program to obtain low-caffeined tea plants would probably take 20 years or more, and the developed tea species may not suit for processing high-quality tea. Using supercritical fluid extraction in the process of tea would lead to the lost of the volaties and other functional compounds.

但是，通过常规育种的方法选育低咖啡碱茶树品种，至少需要20年左右，而且选育出的茶树品种不一定能适制多种多样的茶叶和茶饮料：加工过程中用超临界萃取法去除咖啡碱会严重影响到茶叶品质，尤其是茶叶香气和滋味。

It was necessary to strictly adjust the machine tool's taper parameter when the work pieces had taper by using the numerical control precision WEDM machine,and introduced the basic procedure and method on parameter adjustment by using the trigonometric function.

数控精密线切割在加工带有锥度的工件时，需对机床的锥度参数进行严格的校正，应用三角函数关系详细论述了机床校正的基本过程和方法。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。