刀具

In order to have a better understanding about differences between these two kinds of coating and to estimate the shortage between homemade and imported coated inserts, a series of comparison experiments with the 1Cr18Ni9Ti austenitic stainless steel workpiece were carried out, using 4 types of inserts home and abroad.

为了探询国内与国际最先进涂层硬质合金刀具之间的差距和研究MT-TiCN与TiAlN涂层硬质合金刀具之间的性能差异，本文以四种涂层硬质合金刀具切削奥氏体不锈钢1Cr18Ni9Ti为实验，对此进行了较为深入的研究。

A new curvature-based algorithm in free-form curve fitting was proposed to fit a 2D NURBS profile with an arc spline ,where a new form of curvature formula with matrix representation was also proposed,and then the arc spline tool path with G~(1) continuity was generated.

给出了一种平面曲线轮廓的圆弧样条拟合及刀具路径生成算法，该算法面向零件轮廓的光顺性刀具路径生成，通过应用曲线的曲率关系，对以NURBS表示的被拟合自由曲线按参数递增的方向用G1连续的圆弧或直线段逐段拟合，并生成相应的圆弧样条刀具路径，从而实现零件曲线轮廓表面的光顺加工。

The finite element model was established according as the material and structure of tool, load was used as three way cutting force of blade, tool petiole as fixed bracket, then, distortion and stress distributing of tool haulm was computed.

其刀具刚度有限元模型根据刀杆的材料和结构建立，载荷为刃口的三向切削力，刀具柄部约束为固支，通过求解刀杆的变形及应力分布，优化设计出满足加工要求的高刚性刀具。

PCD cutter's good characteristics make its cutting rule different with other normal cutter. PCD cutter's flank surface can press and polish the machining surface and the outstanding phenomenon will appear.

PCD刀具的优良特性使其切削规律与普通刀具的切削规律有所区别，其特殊性主要表现在PCD刀具的后刀面错位熨压作用，后刀面的错位熨压作用使得PCD刀具在精密切削时甚至会产生超越性加工现象。

General clue of this paper is simulating wood stress field change in initial cutting stage and working out weighted boundary condition of cutting tools first,and then based on which, finding out shear stress and maximal effective stress when wood cut-ted.Meanwhile,finite element comparative analysis is proceeded on distortion and stress field by changing tool orthogonal rake.

本课题的总体思路是通过大型有限元软件ANSYS来模拟切削初始阶段中木材的应力场变化，进而得出刀具受力的边界条件，依此为基础求出木材受切时的剪应力及最大等效应力，同时通过变化刀具前角分别对受切工件的变形及应力场进行有限元比较分析，从而确定刀具的优化前角；优化前角确定后，再通过对刀具进行强度校核确定后角优化值。

Our main products are natural diamonds, tools, man-made single-crystal diamond tools, polycrystalline diamond tool, cubic boron nitride cutting tools.

本厂主要产品为天然钻石刀具、人造单晶钻石刀具、聚晶金刚石刀具、立方氮化硼刀具。

The paper analyzes briefly the development state of the diamond ultraprecision turning tool technology.

分析了国内外金刚石超精密切削刀具技术的发展概况，并从金刚石超精密切削刀具的精度控制、金刚石超精密切削刀具的选择以及金刚石超精密切削刀具的制造技术等方面进行了探讨。

This articls mainly introduces material selection and geometrical parameter determination for cuttery, cuttery design for coated fine turning, especially the effect of chamfered edge on cutting tool's life expectancy.

文中主要介绍刀具的选材。刀具几何参数的确定。涂层。精硬车削的刀具设计，特别是刃口倒棱对刀具寿命的影响。

Some factors about tool material, such as original diamond grain size, micro-crack, binder phase and synthesis condition have been analyzed in detail. In Chapter 4, the wear mechanisms of PCD tool were investigated.

在PCD刀具切削Al〓O〓颗粒耐磨层强化复合地板的过程中，对刀具磨损机理的研究是分析刀具磨损原因以及进一步改善刀具切削性能的前提。

Second, professional sales and wholesale Tool: 1, sales in Europe, the United States Kennametal to Scafa, Sweden Sandvik brand knives; 2, sales of Japan's Mitsubishi, Toshiba, Kyocera, Sumitomo brand knives; 3, sales Korea KORLOY, Taegu Tec, VKX thread cutter knife brands such as; 4, sales of Units turret system Mitsui, knives Units disk, Taiwan thread cutter knives.

销售欧，美国肯纳，以斯卡，瑞典山特维克品牌刀具；2、销售日本三菱、东芝、京瓷、住友品牌刀具；3、销售韩国KORLOY、特固克，VKX螺纹刀等品牌刀具；4、销售台制三井刀架，台制刀盘，台制螺纹刀等刀具。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。