削磨

This paper takes use of the features of ultrasonic grinding which can make the macroscopic force, stress and calory in grinding lower, and then utilizes relevant abrasive in the ultrasonic grinding.

本文利用超声加工宏观磨削力、磨削应力、磨削热小，对加工材料表面损伤低的特点，再结合相关磨料对高精度超薄水晶片表面进行超声磨削加工。

Analysis was also made on the influence upon the grinding forces in case of the same friction factor between wheel and workpiece at different grinding speed, as well as in case of different friction factor between wheel and workpiece at the same grinding speed.

分析了砂轮与工件表面之间的摩擦系数相同而磨削速度不同时对磨削力产生的影响，以及磨削速度相同而摩擦系数不同时对磨削力产生的影响。

The characteristics of constant linear velocity grinding method and constant angle velocity grinding method are analyzed. This thesis analyses the problem and influence to the machining precision of the two methods.

本文的主要研究工作有以下几个方面：研究了凸轮轴磨削加工的运动数学模型，在分析工件恒线速度和工件恒角速度磨削这二种主要凸轮轴磨削加工工艺的特点的基础上，提出一种新磨削加工工艺。

A new technology,which is called non-interference normal tracking for NC curve grinding was presented.

将快速点磨削技术引入到曲线磨削过程中，提出了曲线磨削中砂轮对工件轮廓实施法向跟踪磨削的新方法。

The second principal normal stresses can lead to grinding crack which generates forward beneath the abrasive grain in the plane of grain motion.

在磨粒前下方，受第二主应力的作用，磨削裂纹主要沿磨削方向开裂；在磨粒后方，受第一主应力的作用，产生垂直磨削方向的磨削裂纹。

To solve problems of the wheel interference and the linear speed change on grinding points which has an effeet on the grinding surface roughness,a polar-coordinate-based equal step interpolating method for the grinding point trace is presented.

为解决砂轮干涉及磨削点处线速度变化影响磨削表面粗糙度的问题，提出了极坐标下砂轮磨削点轨迹的等步长插补方法，该方法可应用于任何具有C1连续性的正则曲线的CNC磨削。

The inverse relationship between specific grinding energy and undeformed chip thickness was established.

对超高速磨削条件下比磨削能的影响因素进行了分析，得出了在超高速磨削下，比磨削能与未变形的磨屑厚度的关系。

Surface roughness and geometry topography have very obvious difference between ordinary and ultraprecision grindings. Surface roughness of ultrapreciscon grinding will decrease with abrasive size and grinding depth decrease, surface veining owing to plastic deformation is very clear.

超精密磨削和普通磨削的表面粗糙度和几何形貌存在明显的差异，超精密磨削的表面粗糙度随着金刚石砂轮磨粒尺寸和磨削深度的减小而减小，表面由于塑性变形形成的纹理比较明显。

Centerless grinding is a important way of processing in industrial production,the traditional grinding parameters are determined through the technology handbook and own actual processing experience,choice quality depends largely on the level of technology staff,so that the choice of parameters can not achieve the best.

无心磨削是工业生产中一种重要的加工方式，传统的磨削参数都是由磨削工艺人员通过查询相关的工艺手册并结合自身的实际加工经验选择确定，选择的好坏在很大程度上取决于工艺人员的水平，因此磨削参数不能达到最佳。

The downhole milling pipe string of screw drill tool will produce great reverse torque while milling and grinding the bridge plug, cement plug and so on, and which is extremely harmful to the screw drill tool .

针对螺杆钻具磨铣钻削井下桥塞、水泥塞及类似钻削工作中管柱在井下所产生的巨大反扭矩的危害，在对磨铣钻削管柱进行受力分析的基础上，提出了改进方案，即&井下防扭装置&和&磨铣钻削管柱的配置&，有效地降低了反扭矩带来的危害，改善了磨铣钻削管柱的受力状况。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐