直纹曲面

In this paper, the design and study of the polar coordinates processing system for straight generatrix surface with WEDM are presented.

本文介绍了电火花线切割加工空间复杂直纹曲面的极坐标加工系统的设计与应用研究。

At the end of this paper, the later studies on the WEDM technology and the WEDM for straight generatrix surface technologies are suggested.

论文最后对空间复杂直纹曲面的电火花线切割加工技术的后续研究提出了设想和展望。

The processing system could solve the problem, which in the processing of WEDM for straight generatrix surface, and this method gets a wild application in the mould manufacture.

此系统可以解决某些复杂空间直纹曲面的加工问题，在模具及异形零件制造中可望得到良好应用。

Being formed by linear grain curved surface, helicoid can be expressed by a group of simple lines. Writing two equations of inside and outside of the helicoid, getting any one of simple line′s equation and from which getting the coordinations of two end points by projection transformation, the CAD system of helicoid is achieved. It...

由于螺旋面为直纹曲面，因此可用它的一组素线表示，用极坐标的形式写出内外两条螺旋线的方程，求出任一素线的方程，并通过投影变换求得素线上两端点的坐标矩阵，进而设计出螺旋面的CAD系统，并将其应用于实践，为设计优化决策提供有力的证据。

Therefore, we can predict the variation of the cutting forces during the end mill moving along the ruled surface.

因此，刀侧贴著直纹曲面移动的切削力变化，可以模拟预测。

A ruled surface of revolution formed by an edged circle as the guide element is proposed in the category of basic geometrical bodies.

摘要在基本几何体的范畴内，提出一种以棱圆为导元素的直纹曲面。

Some studies based on machining complex ruled surface by means of WEDM and machining spherical parts through WEDM with rotary electrode are carried out to check the correctness of picture simulating results.

为了检验图形仿真结果的正确性，本文对各种复杂曲面电火花线切割加工系统加工复杂直纹曲面零件和回转电极展成电火花加工球面零件的过程进行了实验研究。

Simulating picture programs corresponding to typical motion types of WEDM process in machining complex ruled surface are designed with structural mode.

选择了十分适用于计算机图形仿真的VC语言作为复杂直纹曲面电火花线切割加工仿真编程语言。

After some experimental results obtained in machining samples with complex ruled surface, concave spherical surface, convex surface and samples with both concave and convex surface are analyzed, the value of these samples in practical prodúction is discussed.

通过对一些典型的复杂直纹曲面样件以及凹球面、凸球面和凸凹复合球面样件加工实验分析，探讨了这些样件在实际生产中的应用价值。

The approach of this paper is suitable for carrying out prediction of cutting forces for flank milling ruled surface under reserving uniform material to cut by using five-axis machine. And it can effectively provide the suggestions of process planning for five-axis flank milling operation.

本文方法适用於直纹曲面在预留均匀的余料下，进行五轴侧铣切削力预测，可有效提供五轴侧铣切削的切削条件规划。

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。