刀具

In this paper, the negative land angle s of PCBN tools was determinedwhen the cutter was used to cut hardened steel.

本文研究了PCBN刀具负倒棱前角的合理选择，并用X射线衍射仪测量了加工表面残余应力，分析了负倒棱前角在形成表面残余压应力过程中的作用。

In this approach, the inclination angle was determined by the normal curvature of the surface to be machined along the path interval direction.

算例表明，所提出的走刀行距及刀具倾角的计算方法合理可行，能够有效提高计算精度和加工效率。

When the system starts displaying machining animation, it does not need to calculate small triangular facets normal to the workpiece surface. It only needs to find out what part of the cutter cuts the workpiece surface and to read the normal from the file.

当显示加工动画时不必再计算毛坯表面小平面的法向量，仅仅需要计算是刀具的哪部分切削了该小平面，然后从文件中读出对应的法向量。

Keywords Numerical Control;Five -axis Machining;Tool Compensation

数字控制；五轴加工；刀具补偿

The first step is to generate tool paths in the NCP system in an off-line mode.

第一步是将产生刀具轨迹在NCP的系统在离线模式。

Some country housekeepers would have stopped to spread a white cloth over the oilcloth, to change the thick cups and plates for their best china, and the wooden-handled knives for plated ones.

一些国家的管家会停下来传播在油布白布，改变他们的最好的瓷器厚杯盘，以及木刀具镀处理的。

This dissertation study the machining method for multi-axis NC high speed milling, tool path generation calculation and interference treatment and optimum programming.

本文研究了多坐标数控高速铣加工中的加工方法、刀具轨迹生成计算以及干涉处理和优化计算方法。

Shaws idea that chip could be regard as a series of parallel orthogonal slices, a computing model of cutting force and cutting temperature based on orthogonal cutting simulation results is constructed in chapter 4, and a map is established between the three-dimensional cutting process and planar orthogonal cutting process.

第五章针对航空整体结构件铣削加工变形这一复杂的制造难题，建立了三维铣削加工的弹塑性热力耦合有限元模型，研究了材料模型、残余应力施加、刀具动态载荷、材料去除等铣削加工模拟所涉及的关键技术。

With the development of modern manufacturing, it arises track that cause overcut in the shortened tool radius compensation cases. Because more and more processing of data root in large volumes of data generated by CAM, and processing path is often constituted by a large number of small segments.

随着现代制造业的发展，越来越多的加工的数据来源于CAM生成的海量数据，加工路径往往是由大量的小线段构成，在缩短型刀具半径补偿情况下出现造成过切的刀位点。

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。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。