tool edge

The old tool carriage with point contact crop appearance for steel pipes is not suitable to cut the oblique end face on pipes because of tool edge bluntness and lower tool service life.

传统的钢管平头方式&点接触平头方式设计的刀盘，对于切斜的管端面很不适应，易打钝刃口，降低刀具使用寿命；

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Edge Shape Error Analysis and Modification Calculation of the Positive rake angle slotting tool

正前角插齿刀刃形误差分析及修正计算

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Figure 5 shows the edge points found after the tool runs the calipers.

图五就是图四的卡钳运行后找到的边缘点.

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Calculation results indicate that the curvatures of designed cathode tools become bigger compared to that of wheel edge contours. Furthermore, shape deviation between cathode tool and wheel increases with coordinate value and with the curvature of wheel contour.

计算结果表明：设计阴极形状的曲率大于成形砂轮轮廓的曲率，且随着x坐标和成形砂轮轮廓曲率的增大，设计阴极与砂轮廓形的偏差增加。

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And the main factors which influence critical tool cutting edge angle are studied, and related theory analysis are made. Furthermore, some new controlling methods and technologys to restrain or decrease the feed direction burrs in machining Processes are developed.

讨论了有关主要因素对临界主偏角的影响，进而开发出了几种抑制或减小进给方向毛刺的新工艺和新方法。

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The wear mechnisms of coated cutting tools mainly are flank wear and abrasive wear, accompany with adhesive wear, oxidation wear and breakage of the tool tip/ cutting edge.

涂层铣刀磨损方式主要是后刀面磨损和磨粒磨损，伴随着粘接磨损，氧化磨损以及刀尖和刀刃的破损。

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A 3D mechanical cutting force model is proposed based on the shear and slip-line field method, in which the tool edge radius and elastic restitution in the ploughing field are taken into consideration.

本文基于剪切-滑移线场理论建立了二维振动辅助微铣削的三维切削力模型，模型中考虑了切削刃钝圆半径及耕犁和弹性恢复对微细切削力的影响。

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It is found that un-breaking field will be enlarged with the decrease of the tool cutting edge angle because of the lessening of the diameter of the cutting angles.

指出随主偏角的减小，其非折断区域将进一步扩大，切屑外径的减小是其不折断的主要原因。

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This paper introduces the correct calculating method of width dimension of top edge, front and rear angles of two side edges and thread profile angle with front angle for lathe tool of trapezoid threads. There are reference values for practical production.

介绍梯形螺纹车刀顶刃宽度尺寸、两侧刃的前后角以及带有前角时牙型角的正确计算方法，对实际生产有参考价值。

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However, the machining performance of micro tool is low, behaved as quick tool wear, frequent tool fracture, also the machining quality is not high, there is always burr generated on the edge and in the groove.

然而，在微细铣削加工中存在微径铣刀的加工性能不高，表现为刀具磨损快、常发生破损；加工质量不高，工件的棱边、沟槽处产生毛刺等问题。

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But the most cutting-edge tool under development is the "teachable agent" — a computerized character who learns, tries, makes mistakes and asks questions just like a real-world pupil.

但是，正处于研发中的最尖端的工具是“可被教的机器人”个电脑化的角色，他能够学习、尝试犯错误，并且像一个真实世界的学生一样提问题。

四级真题- 2018年 6月 3卷 阅读A

In this paper, a mathematical model for CMFD with unsymmetrical two-sided chip-split groove is established to resolve the problem of grinding the drill with numerically-controlled sharpening of tool edge machine.

为了解决在数控群钻刃磨机床上刃磨出双边非对称分屑糟群钻，本文建立了双边非对称分屑槽群钻的数学模型。

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