The final quality of mechanical components is directly linked to the efficiency of the machining processes to which it is subjected. In this sense, grinding can provide high standards of surface and geometric quality for mechanical components, since these characteristics are increasingly necessary for the automotive and aerospace sectors. However, the complexity of the mechanical components creates increasing difficulties for grinding. Workpieces with geometric interruptions, as in the case of gears, splined shafts, pistons, and crankshafts generate mechanical impacts and aggravate the thermal gradients during grinding, causing errors of shape, drop in surface quality and reduction in the life of the cutting tool. However, few studies on better conditions for interrupted cut grinding are seen, thus making it difficult to determine ideal grinding conditions. Thus, the present experimental investigation aims to make a comparison between cylindrical grinding of workpieces of hardened AISI 4340 steel with two, six, and twelve geometric interruptions, comparing them with the grinding workpieces without interruptions, applying white aluminum oxide wheels with vitrified and resinoid bonds. Results in terms of surface roughness, roundness deviation, acoustic emission, grinding power, diametrical wheel wear, and micrography are pointed out, indicating that the greater rigidity of the vitrified bond can be harmful during the grinding of workpieces with interrupted geometry.

机械组件的最终质量直接取决于其所经受的加工过程的效率。从这个意义上讲，磨削可以为机械部件提供高标准的表面和几何质量，因为这些特性对于汽车和航空航天领域越来越必要。然而，机械部件的复杂性增加了磨削的难度。齿轮，花键轴，活塞和曲轴等具有几何形状中断的工件会产生机械冲击，并在磨削过程中加剧热梯度，从而导致形状误差，表面质量下降并降低刀具寿命。但是，几乎没有关于中断打磨的更好条件的研究，因此很难确定理想的研磨条件。因此，本实验研究旨在比较具有两个，六个和十二个几何中断的硬化AISI 4340钢工件的圆柱磨削，并将其与没有中断的磨削工件进行比较，使用具有玻璃化和树脂粘结的白色氧化铝砂轮。指出了有关表面粗糙度，圆度偏差，声发射，磨削功率，径向轮磨损和显微照片的结果，表明玻璃化结合剂的较大刚度在磨削几何形状不连续的工件时可能有害。和十二个几何中断，将它们与没有中断的研磨工件进行比较，使用带有玻璃化和树脂状结合的白色氧化铝砂轮。指出了有关表面粗糙度，圆度偏差，声发射，磨削功率，径向轮磨损和显微照片的结果，表明玻璃化结合剂的较大刚度在磨削几何形状不连续的工件时可能有害。和十二个几何中断，将它们与没有中断的研磨工件进行比较，使用带有玻璃化和树脂状结合的白色氧化铝砂轮。指出了有关表面粗糙度，圆度偏差，声发射，磨削功率，径向轮磨损和显微照片的结果，表明玻璃化结合剂的较大刚度在磨削几何形状不连续的工件时可能有害。