论文部分内容阅读
高强度螺栓头下圆角需进行冷滚压强化工艺，以提高螺栓的疲劳强度。通过研究实践证明，滚压前螺栓头下圆角的尺寸公差是影响滚压质量的关键因素之一。本文就滚压前的螺栓头下圆角尺寸公差与滚压变形的关系，研究了确定滚压圆角尺寸公差数值的方法，并给出了确定滚前圆角尺寸公差数值与滚压深度的关系线图。
High-strength bolt head under the fillet cold rolling process needs to be strengthened in order to improve the fatigue strength of bolts. Through the research and practice, it is proved that the dimension tolerance of the lower bolt head before rolling is one of the key factors that affect the rolling quality. In this paper, the relationship between the tolerance of the lower front fillet and the rolling deformation before rolling is studied. The method to determine the tolerance value of the rolling roundness is studied. The method to determine the value of the fillet tolerance and the rolling depth Relationship diagram.