论文部分内容阅读
本文以在电子计算机上对缓进给强力磨削表面残余应力近千个测试点的实际计算为基础,分析讨论了矩形截面杆状零件磨削表面残余应力的计算方法,计算误差及其计算公式的简化。在研究形状比较复杂的机器零件(例如平板状零件)的磨削表面残余应力时,常常沿残余应力的主应力方向切取矩形截面杆状试祥(当然要避免由于切割方法本身带来的附加应力),测量试样在杆的长度方向上的表面残余应力。所以研究矩形截面杆状零件磨削表面残余应力是研究复杂零件表面残余应力的基础。因此讨论矩形截面杆状零件磨削表面残余应力的计算方法,计算误差,进而在保证必要的计算精度的前提下作一些适当简化,在理论上和工程计算上是有实际意义的。
Based on the actual calculation of nearly 1000 test points on the surface of the strongly ground grinding surface by slow motion on an electronic computer, the calculation method of the residual stress on the grinding surface of the rectangular section bar is analyzed and discussed. The calculation error and its calculation formula Simplified. When studying the residual stress of the grinding surface of machine parts with complex shapes (such as plate-shaped parts), rectangular cross-section rod-shaped test cutting is often taken along the direction of the principal stress of residual stress (of course, additional stress due to the cutting method itself should be avoided ), The surface residual stress of the test specimen in the length direction of the rod is measured. Therefore, researching the residual stress of the grinding surface of the rectangular section bar-shaped part is the basis of studying the residual stress on the surface of the complex part. Therefore, the calculation method of the residual stress on the grinding surface of the bar with rectangular cross-section and the calculation of the error are discussed, and some appropriate simplifications are made on the premise of ensuring the necessary calculation accuracy, which is of theoretical significance and engineering calculation.