加工方法

Non-linear finite element method is an important method to numerically simulate materials processing and preparation.

非线性有限元法是材料加工与制备过程数值模拟的一种主要方法。

We have completed the earlier stage research on theory analysis, fabricated the GRIN sphere lenses using two kind of monomer selected by suspension diffusion copolymerization method, measured their refractive index distribution curve and other optical parameters of them, and evaluated imaging quality on the basis of their distribution curve.

本工作对此种透镜的光学性能进行理论分析，选择两种适当聚合物单体利用悬浮扩散共聚的方法加工制备此类微球透镜，测量所得透镜的折射率分布曲线和其它光学参数，并对此种梯度折射率微球透镜的成像特性进行了评价。

The sculptured surface is machined with the difference method.3. In order to support sculptured surface design oriented to manufacturing,an embedded-computer-based platform was presented.

针对一个雕塑曲面零件设计实例，通过对模具分型方向和加工约束进行分析，给出了可行的分型曲面设计结果，验证了所提出的曲面可制造性分析方法的可行性。

With differential geometry knowledge, the local characters of the blade surface are analyzed. Based on researching the cylindrical cutters osculating location, the methods to calculate the osculating location of the conic cutter and the torus cutter are discussed. A method of tool path planning based on the second order osculating method is preferred.

利用微分几何学知识，分析了螺旋桨桨叶曲面的局部特征，在研究圆柱刀二阶密切法规划刀位的基础上，探讨了圆锥刀和圆环刀的二阶密切刀位计算方法，采用二阶密切法规划刀位可以显著地提高加工精度。

The judging speed is accelerated To assure generating correct tool paths in 3-axis NC machining, the processing plans of undercut and overcut situations for whole tool trajectories are discussed Sometimes certain of complex problems can be simplified using an approximating surface offset strategy presented The surface reconstruction technology in reverse engineering is studied deeply.

讨论了三轴数控加工球头铣刀关于整个刀轨路径的漏切与过切的检查和处理方法，保证最终生成正确的刀具路径。研究了曲面偏距问题，提出了一种曲面近似偏距新策略，在保证正确结果的前提下，将复杂问题简单化。深入研究了逆向工程中散乱数据点的曲面重构技术。

At last, the author presents the multi-coordinate NC machining methods of turbine wheel with non-developable ruled paraboloid.

从理论上深入分析了叶型为非可展直纹抛物面的叶轮的五坐标侧铣、四坐标侧铣和三坐标端铣数控加工计算方法。

In industrial food processing, microwave energy has been used to pasteurize and sterilize food in a shorter time compared with conventional methods Heddleson et al.

在工业的食品加工中，微波能源已经用来进行低温杀菌和使成不毛在短时间内被相较的食物传统的方法 Heddleson 以及其他人。

The primary problem in using the method of Numerical Control Manufacture-Shot Peen forming to manufacture the part on rough is to determine the size of the roughcast.

采用毛坯数控加工-喷丸成形方法的首要问题是确定坯料结构尺寸。

Pegged on various sizes and layers, different types of quilts will be made from the material.

有各种各样的大小和层次的叠放方法，不同类型的被子将被用不同的材料加工制成。

It is exact, reliable, simple and pellucid for the method to be proved.

以凸轮反求为例，按照常规反求方法，一般是对原有凸轮进行坐标三维测量，然后根据所得到的数据构建凸轮的CAD模型，再进行加工仿制。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。