加工面

The principle and device of machining logarithmic spiral profile shaft with form milling cutter are introduced.

介绍了用成形铣刀加工对数螺线型面轴的原理和装置。

And two ameliorative methods, which are important to improve the facture quality, are brought up: amelioration of instruments and reshaping the laser beam. As its advantages of exactitude and cheapness, this new method can be widely used in the area of semiconductor's minuteness machining.

通过对腐蚀孔的横向与底面形状的分析，从改进实验装置和进行激光束空间整形2方面提出了改进的方法，对提高掩膜投影法的加工精度具有重要意义。

It is not only important material for mica titanium nacreous pigment, high grade paint, pigment and cosmetic, but also the stuffing of plastic and rubber.

在生产过程中，我们以水为介质，保护了云母鳞片的晶面光泽，加工出来的云母粉，棱边清晰、折射性好，附着力强，径厚比大，并容易分散于许多液体中，是云母钛珠光颜料的重要基料，高档油漆、涂料、化妆品的功能性体质颜料、塑料、橡胶的优良填充料。

Trunk Bags: hog skin,whole granular section cowhide,tanned or half niter processed and more further processed hog skin, clothes,trunk, handbag and similar containers, leather like regenerative or painted leather handbag, clothes made of leather or regenerative leather, clothes accessories and other things, fur clothes.

箱包：猪皮革、整张粒面剖层牛皮革、经鞣制或半硝处理后进一步加工的猪皮革；衣箱、手提包、及类似容器、皮革、再生皮革或漆皮作面的手提包、皮革或再生皮革制的衣服；毛皮制的衣服、衣著附件及其它物、毛皮衣服。

A method of CNC turbine blade profile abrasive belt grinding is introduced based on optimum grinding effect, where the direction of the axis of trolley wheel is consistent with that of minimum principal curvature on the contact point of turbine blade. And the cutter location path is determined, and then the NC code is derived from post-processing.

根据接触轮轴线与叶片型面接触点处最小主曲率方向重合可以达到最好的切削效果，设计了叶片磨削加工过程的运动方式，以此计算出刀位轨迹并进行后置处理得到 NC 代码。

On the basis of nonlinear FEA code ANSYS/LS-DYNA, rail rolling process of universal rolling unit were simulated by 3D large deformation thermal-mechanical coupled elastic-plastic FEM. And the deformation shape of the work piece, deformation parameters and cross dimensions for each pass were obtained and stress,stain distribution and metal flow in rolling process of typical passes were analyzed in detail. Analyzed typical pass stress and strain distribute, rolling stress and deforming in universal pass last groove in detail,discussed the effect regularity of residual stress distribution and size to safely using rail, detailed to expound universal pass to railhead tread circular arc process.

本文基于ANSYS/LS-DYNA非线性显式有限元软件，以60kg/m的重轨为研究对象，采用全三维弹塑性热力耦合的有限元方法研究了重轨在万能轧机组中的变形过程，得到了轧件在孔型中的延伸情况、各道次轧件的变形参数，分析了典型道次的应力、应变分布，并详细分析了全万能成品孔型中轧件受力和变形情况，讨论了残余应力的分布及大小对钢轨安全使用的影响规律，详细地阐述了全万能成品孔型对轨头踏面圆弧的加工过程。

The effects of operation parameters on separation of fatty acid methyl ester from rapeseed oil deodorizer distillate by molecular distillation were investigated for further utilization of RODD. The results indicated that the recovery of FAME was 41 g/(100 mL) when pressure was 5.2 Pa, evaporating temperature was 120℃, feed temperature was 70℃, wiper rolling speed was 150 r/min, feed rate was 120 mL/h. The biodiesel was analyzed by GC-TOFMS.

为了实现脱臭馏出物的清洁加工，运用分子蒸馏技术分离菜籽油脱臭馏出物中合成的生物柴油，考察了分子蒸馏的操作参数对生物柴油回收率的影响，研究结果表明：当系统压力为5.3 Pa，蒸发面温度120℃，进料温度70℃，刮膜转速150 r/min，进料速率120 mL/h时，生物柴油回收率达到41 g/100 mL。

The effects of operation parameters on separation of fatty acid methyl ester from rapeseed oil deodorizer distillate by molecular distillation were investigated for further utilization of RODD.

为了实现脱臭馏出物的清洁加工，运用分子蒸馏技术分离菜籽油脱臭馏出物中合成的生物柴油，考察了分子蒸馏的操作参数对生物柴油回收率的影响，研究结果表明：当系统压力为5.3 Pa，蒸发面温度120℃，进料温度70℃，刮膜转速150 r/m in，进料速率120 mL/h时，生物柴油回收率达到41 g/100 mL。

The cutter location in NC generative ultrasonic grinding process for parallel ruled surface with cylindrical grinding wheel was analyzed,the structure of NC generative ultrasonic grinding device was introduced,the design of grinding spindle assembly and the spindle's driving scheme was also introduced,system hardware and software design had been finished.

分析了圆柱磨轮数控展成超声磨削平行直纹面时的刀具空间位置，介绍了数控展成超声磨削成形加工机床的总体结构，论述了磨轮主轴部件设计及主轴驱动方案，实现了主轴变频调速控制系统软硬件设计。

Because the free form surface expressed by discret points has difficulties in aberration correction, manufacture and test, the Zernike polynomial was adopted to express the free form surface. The performance of this system was optimized on the basis of the relationship between Zernike polynomial and Seidel aberration.

由于离散点表述的自由曲面在像差校正、加工及检测等方面存在困难，提出了采用Zernike多项式表征自由曲面的面形，并利用Zernike多项式与Seidel像差之间的关系，优化自由曲面成像系统性能。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。