Study on the Corner Dullness in Surface Grinding. Mechanism of Generating the Dullness due to the Wheel to Workpiece Relative Displacement.
Study on the Corner Dullness in Surface Grinding. Mechanism of Generating the Dullness due to the Wheel to Workpiece Relative Displacement.
复制标题
平面磨削中刀角钝度的研究。
DOI：
10.2493/jjspe.59.1269
复制
发表时间：
1993
期刊：
影响因子：
--
通讯作者：
S. Kawamura
中科院分区：
文献类型：
--
作者：
S. Okuyama;T. Yoshida;Shoichiro Watanabe;S. Kawamura
有些机器零件，如刀具和剪刀，在它们的拐角形状上很重要。磨边机零件的端部经常会产生角部钝化，这会使角部形状恶化。本文从理论和实验两个方面探讨了一次进给磨削时产生钝化的机理，并得出了以下结果。(1)在车轮入口部产生的入口迟钝和在车轮出口部产生的出口迟钝在形状上不同。出口昏暗的高度大约是入口的三倍。(2)在考虑砂轮-工件相对位移的情况下，利用单自由度振动模型从理论上得到的钝化度形状与实测值吻合较好。(3)在通常的磨削条件下，出口钝化高度随砂轮切深、工作台转速和磨削刚度的增大而增大。(4)出口钝化高度随磨床当量质量、倾倒系数和弹簧常数的增大而减小。
Some machine parts, such as cutting tools and shearing blades, have importance in their corner shapes. The corner dullness which deteriorates the corner shapes is often generated at the ends of ground machine parts. This paper deals, both theoretically and experimentally, the mechanism of generating the dullness under one-pass-plunge grinding and following results are obtained. (1) Entrance dullness, being generated at the wheel entrance part, and exit dullness, being generated at the wheel exit part, are different in shape. The height of exit dullness is about three times as much as the entrance. (2) Shapes of the dullness, theoret-ically obtained under consideration of the wheel-workpiece relative displacement and utilizing the one-freedom vibration model, show good agreement with measured results. (3) Height of the exit dullness increases with wheel depth of cut, table speed, and grinding stiffness under usual grinding condition. (4) Height of exit dullness decreases with equivalent mass, dumping coefficient, and spring constant of the grinding machine.