【摘要】 为了研究拉丝过程中影响拉拔力的因素,基于有限元软件ANSYS,通过正交试验研究在传统拉丝和超声波拉丝下模具的入口角度、定径带长度、出口角度对拉拔力的影响。结果表明,不管是传统拉丝,还是超声波拉丝,随着模具入口角度的增大,拉拔力先急剧减小,然后趋于稳定,当模具入口角度为13°时拉拔力最小;随着定径带长度的增加,拉拔力也不断增加,当模具定径带长度为0.3 mm时拉拔力最小;出口角度的变化对拉拔力几乎没有影响。加入超声波后,平均拉拔力有明显降低。更多还原

【Abstract】 This paper aims at investigating the factors having influence on the drawing force during the drawing process. Based on the finite element software ANSYS,the effects of the inlet angle,the aperture length and the exit angle on the drawing force under the traditional drawing and ultrasonic drawing are studied by orthogonal experiment. The results show that,regardless of the traditional drawing or ultrasonic drawing,the drawing force decreases sharply with the increase of the inlet angle of the mold,and then tends to be stable. When the inlet angle of the mold is 13 degrees,the drawing force is minimum. As the aperture length increases,the drawing force also increases. When the aperture length is 0.3 mm,the drawing force is minimum. The change of the outlet angle has little effect on the drawing force. After the addition of ultrasonic waves,the average drawing force is significantly reduced.更多还原