Influence of tool inclination on brittle fracture in glass cutting with ball end mills
Influence of tool inclination on brittle fracture in glass cutting with ball end mills
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DOI：
10.1016/j.jmatprotec.2007.08.068
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发表时间：
2008-06
影响因子：
6.3
通讯作者：
Takenori Ono;T. Matsumura
中科院分区：
文献类型：
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作者：
Takenori Ono;T. Matsumura
讨论了刀具倾角对玻璃脆性断裂的影响。在球头铣刀沿刀具进给方向倾斜的情况下，进行了切削试验，观察了上切削和下切削过程中的表面。在高进给速度下，向下切割过程中会发生脆性断裂。然后，将在垂直平面上相对于进给方向倾斜的球头立铣刀的加工表面与上切削和下切削过程中的加工表面相关联。还测量了切削力，讨论了未变形切屑厚度变化对脆性断裂的影响。倾斜球头立铣刀加工表面的划痕显示在具有缺口边缘形状的分析模型中。在切削试验中，不发生脆性断裂的最大进给速度随刀具倾角的变化而变化。
Glass milling is discussed with influences of tool inclination on brittle fracture. Cutting tests are performed to observe surfaces in the up-cut and the down-cut processes with a ball end mill inclined in the feed direction of the cutter. Brittle fracture occurs in the down-cut process at high feed rates. Then the machined surfaces in cutting with the ball end mills tilted in the vertical plane with respect to the feed direction are associated with those of the up-cut and the down-cut processes. The cutting forces are also measured to discuss brittle fracture with the change of the undeformed chip thickness. The scratches on the surface finished with the tilted ball end mill are shown in an analytical model with a notched edge shape. The maximum feed rates at which brittle fracture does not occur are shown with the tool inclination in the cutting tests.