拉延速度对拉延件破裂的影响

Influnce of drawing velocity on workpiece split

讨论了压力机工作速度与板料拉延变形速度的关系以及拉延速度对板料塑性及变形抗力的影响,分析了曲柄压力机速度的变化规律,提出了深拉延件必须校核拉延过程中工件处于最大变形抗力位置时的压力机速度。

The relation of press speed with strain speed of workpiece and the influence of press speed on resistance to deformation and plasticity of workpiece have been described with analysis of the changing regularity for velocity of crank press and pointed out that there is necessity to verify the velocity of crank press when work-piece is in a position of critical state during drawing process with big height.