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1·The initial path of crack pro-pogation is related with a rake angle of the cutting blade.

裂纹扩展的初期路径与刀具的前角有关。

2·Rake Angle. It is the Angle between the face of the tool called the rake face and the normal to the machining direction.

它是被称为前倾面的刀具面与垂直机加工方向的夹角。

3·The effect of tool rake angle on the geometric shapes of the chip, cutting force and cutting temperature is investigated.

分析了刀具前角对切屑几何形状、切削力和切削温度的影响。

4·The results show that the effects on surface roughness are feed speed, depth of cutting , tool rake angle and parts hardness in turn.

结果表明：工件进给速度对表面粗糙度的影响最大，切削深度和刀具前角次之，工件硬度影响最小。

5·This paper also discusses bit parameter design to improve the economy of PDC bits, such as negative rake Angle and side rotation Angle.

本文还介绍了为提高复合片钻头经济指标的钻头参数设计问题，如负前角，侧旋角等。

6·The effects of cutting parameters, the tool rake Angle, cutting thickness and speed, for bamboo on cutting forces are studied on this paper.

研究了竹材切削不同刀具前角、切削量与切削速度对切削力的影响。

7·It also shows that the chip flow direction is closer to the maximum inclination direction of a rake face with an increase in a normal rake Angle.

文中还提出，随着法向前角增大，流屑方向将愈接近前刀面最大倾斜方向。

8·The influencing orderliness of the cutting depth and the rake Angle of the tool on cutting qualities are found and the mathematical models are built.

得出了切削厚度与刀具前角这两个切削参数对切削质量影响的规律，得出二者关系的数学模型。

9·Measurable parameters include the coordinates of the circle center of the cutter teeth compact and the compact's back rake Angle and side sway Angle.

可测量的位置参数有切削齿复合片的圆心坐标及负前角、侧偏角等。

10·Their lower thermal conductivity and relatively higher under high speed cutting and negative rake Angle of heat generated by the compressive strength.

它们的更低的热导性和相对更高的承受高速切削和负前角所产生热量的抗压强度。