公开(公告)号：US06170308B2

公开(公告)日：2001-01-09

申请号：US09357260

申请日：1999-07-20

申请人： William A. Veronesi ,  Pedro Sainz de Baranda ,  Vincent C. Nardone ,  Stephen E. Tolman ,  Paul H. Wawrzonek

发明人： William A. Veronesi ,  Pedro Sainz de Baranda ,  Vincent C. Nardone ,  Stephen E. Tolman ,  Paul H. Wawrzonek

IPC分类号： B21D2614

CPC分类号： B24B31/006 ,  B24B39/006 ,  Y10S72/707 ,  Y10T29/479

摘要： The rate of impact between the peening elements and an internal surface of a hollow part is a function of the vibration frequency, and there is a cut-off frequency at which a hollow part can vibrate and induce repeated impact between its internal surface and the peening elements because the rate of impact becomes erratic and loses its cyclical nature as the vibration frequency deviates from the cut-off frequency. The present invention provides a method for determining the cut-off frequency at which a hollow part can vibrate and maintain the repetitive nature of the impact between its internal surface and the peening elements. Such a method requires a peening element speed limit ratio, which is the ratio of the velocity of the hollow part compared to the velocity of the peening element above which the rate of impact begins to become erratic and lose its cyclical nature. The present invention utilizes the peening element speed limit ratio to determine the frequency at which to vibrate the hollow part when peening its internal surface so as to and maintain repeated impact between it and the peening elements.

摘要翻译： 喷丸元件与中空部件的内表面之间的冲击速率是振动频率的函数，并且中空部件可以在其内表面和喷丸之间振动并引起反复冲击的截止频率 因为当振动频率偏离截止频率时，冲击速率变得不稳定并且失去周期性质。 本发明提供了一种用于确定中空部件能够振动并且保持其内表面和喷丸元件之间的冲击的重复性质的截止频率的方法。 这种方法需要喷丸元件速度限制比，其是中空部分的速度与喷丸元件的速度之比，其中冲击速率开始变得不稳定并且失去其周期性质。 本发明利用喷丸元件限速比来确定当其内表面硬化时使中空部分振动的频率，从而在其与喷丸元件之间保持重复的冲击。