1 英文文献
1.1Performance of cemented carbide tools
Abstract The performance of cemented carbide cutting tools
directly influence machining quality of the machined workpiece .In t his  paper, the forming mechanism of boundary notch of cemented carbide cutting tool is studied, related theories analyzed,    a definition  the boundary notch size presented, and main factors to influence boundary notch of tool pointed out. Besides forming process and change lay of the boundary notch of tool are found  out,and  a certain number of measures to decrease and control the boundary not of tool have been advanced.
Key words boundary notch; cemented carbide cutting tool;cutting burr; corner radius; tool cutting edge angle.
1 INTRODUCTION
The wear and boundary notch of cemented carbide cutting tools are often found in the machining. They directly influence machining quality of the machined workpiece and the cutting performance and life of the cutter. Especially, in the precision machining,flexiblema nufacturing system (FMS) and other autom
ation manufacture, wear andbo undary notch behaviors of cemented carbide tools are even more important. Metal cutting experiences have expounded that wear and bo undary notch of the cemented carbide cutting tools are more serious in the machining of the workpiece in which the strain hardening is high and the remaining is not even. It seriously influences the machining quality of the machined piece and the cutting performance and life of the cutter. But, so far, there has not been much r
esearch on the boundary notch mechanism of cemented carbide cuttin cutter, and the technical measures to reduce boundary notch of ce mented carbide cutting tools are fewer. So that,the based on the machining experiments of friction welded joint, this research focuseson the forming processes and main rules of the boundary no tch, andhas developed several measures to resist or lessen boundar notch, which provides    a theoretical and experimental base to ensur
e cuttingperformances o
width的意思中文翻译
f cutters and machinin
g quality.
2 THE FORMING PROCESS AND MAIN SIZE OF BOUNDARY NOTCH
The boundary notch of cemented carbide cutting tools is wear area, which is relatively large, resulting from friction between main cutting edge and the surface of the workpiece as the follow ing Fig.1.
(a)shows a traditional wearing type of the flank. The rake face Ar and flank face Aa are also shown.
(b)shows the main dimension of boundary notch of the lathe tool, in which VN represented the height of boundary notch and r efers to the width. It is apparent that the greater the dimensio ns of VN and    C are, the greater it destroys the performance of tools and influences the machining quality[3,4].
By experiment, the forming process of the boundary notch can be divided into the following three steps: firstly, several micro cra cks are produced at main cutting edge. Secondly, the mesh fractur es are found in the boundary areas and they will 32,49114pread. Finally, the piece material will be denuded and the boundary noth is formed. In the subsequent cutting process, the dimension of
(c)boundary becomes bigger and bigger.
Shows the forming process of boundary notch of the cemented carbi de cutting tools.
Main factors to influence bouht
notch are mechanical performance of the piece material, the cutter material, and geometry parameter of the cutter. The following ex periments were carried out in order to expound the forming mechan  forming process of boundary notch of the cemented carbide cutting tools.
3 EXPERIMENT CONDITIONS AND TESTING MEASURES
The lathe C6130 and reversible cutting tool are used in the experiment. Five cutter materials are employed. Main mechanical parameters of cutter material are shown in Table 1.
The machining piece is the friction-welded line of the single h ydraulic pillar. The width of the welded line is 15mm and the mac hining allowance is    5.5mm. Besides, the above pillar is welded with 270SiMn and 45# steel. The relatively mechanical performances of the welded line are shown in Table2.
Based on manufacturing experience and relative information in Chi na and other countries about similar machining process, the chosen machining and tool geometry parameters are shown in Table    3.
The boundary notch dimensions of the cemented carbide cutting
tools (boundary notch height VN and width    C are directly attained
by tool microscope. In order to ensure reliability of the results, repeated experiments are carried out. The recurrent performance is good.
4 EXPERIMENT RESULTS AND ANALYSIS
4.1 Cutter Materials
For different cutter materials, as shown in Fig. 3, the machining performance and the ability to resist boundary notch are distinctly different.
From Fig. 3, we can find the boundary notch dimensions are
relatively large when YD10,YD15 and YW are used. Whereas the boundary notch dimension is smallest when YTS25 is used. Because of the asymmetry allowances impacts and vibrations will take place. YTS 25 cutter has better impact-resisting performance and boundary notch dimension. Therefore, YTS25 cutter material is selected to do the following experiments.
Table    1 Material Performances of Cutters
Type Material Performance Remar kboundary notch are shown as in Fig .4 when the cutting edge angle is changed. From Fig.    4 we can find that, with the lessening of the cutting edge angle Kr , the dimensions of the boundary notch decrease. The reason is that with the lessening of the cutting edge angle Kr , the length of the cutting edge that acts on cutting becomes larger and the average loads on the cutting edge become lighter.
Influences of Cutter Corner Radius.
1.2中文翻译
硬质合金刀具的性能直接影响到工件的切削质量。在这篇文章里，研究了刀具磨损的形成机制，分析相关理论，提出了刀具磨损尺寸的定义，并且指出了刀具磨损的主要因素。除硬质合金刀具的形成过程和变动位置以外发现，并且一定数量的措施减少和控制硬质合金刀具被推进了。
关键词: 刀刃磨损；硬质合金刀具；切口毛刺；角落半径；工具切断边缘角1.介绍
硬质合金刀具的刀刃的磨损在加工中经常发现。它们直接地影响以机器制造的工件和切削质量和刀具的寿命。尤其，在精密机加工中，柔性制造系统(FMS)和硬质合金刀具的其他自动化制造系统中，擦损和刀刃磨损轨迹更重要。金属制的痕迹已经解释了擦损和硬质合金刀具的刀刃磨损在工件的机加工
在高应变硬化中哪一个更严重和甚至没有剩余的情况。它严重地影响机器制造的工件质量和切断的性能和刀具的寿命。但是，迄今为止，在硬质合金刀具的刀刃磨损机构和专门技术措施上，都使硬质合金刀具的界线凹槽变得越来越小。因此，以磨擦熔接接合的机制实验为基础，这一个研究把重心集中在刀刃磨损的形成程序和干管尺，而且已经发展数个的措施抵抗或者减小界线凹槽，这提供一个理论上的经验性的碱确保刀具的切断性能和切削质量。
2 刀刃磨损形成原因和主要尺寸
硬质合金刀具的磨损是一个擦损面积，是相对地大的，由于主要的刃口和工作件的表面之间的磨擦，显示了传统侧面的磨损类型,Ar倾斜面Ar和侧面Aa面也显示。显示车刀的凹槽的主要尺寸，和的刀刃磨损，在车床中VN代表刀刃磨损的高度。C代表它的宽度，这样看起来，VN和C的尺寸越大，那么它破坏刀具工具的性能和影响机制质量的机会越大。
根据实验，刀刃磨损的形成方法被分成三步: 第一，数个的微观裂解在主要的刃口被提出展现。第二，网眼破面在界线面积和他们被发现将会扩展。最后，块材料将会被使裸露，而且凹槽被形成。在后成的切削过程中，刀刃磨损的尺寸会变得越来越大。
影响刀刃磨损的主要因素是刀具的材料的机械性能，刀具材料和几何参数。下列的实验操作是为了解释边界尺寸的形成机原文请腾讯3.249114理和刀具磨损的扩展

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