无凸缘筒形件的首次伺服不压边拉深极限的研究  

Study on Limiting Drawing of First Servo Drawing Flangeless Cylindrical Cup Without Blank Pressing

作　　者：欧凌涛 潘晓涛[1] 瞿星辉 阮卫平 孙友松[1] 

机构地区：[1]广东工业大学材料与能源学院,广东广州510006 [2]广东锻压机床厂有限公司,广东佛山528300

出　　处：《热加工工艺》2014年第23期61-64,共4页Hot Working Technology

基　　金：粤港关键领域重点突破项目(2009Z019)

摘　　要：通过分析拉深速度对成形极限的影响,提出了伺服拉深提高工件拉深成形极限的设想。探讨了伺服压力机在不同转角、转速以及距下死点的不同高度的1次变速、2次变速、3次变速对成形极限的影响。结果表明,3次变速的伺服拉深可以提高拉深成形极限,并在靠近下死点,压力机速度减为最大速度的10%左右可以提高工件20%左右的拉深极限。By analyzing the effects of drawing velocity on the forming limit, the fancy of improving the limiting drawing used the servo drawing was proposed. The influences of servo press with different angles, different rotational speeds and the bottom dead center of different heights in the first, second and third variable speeds on the limiting drawing were discussed. The results show that the servo drawing of the third variable speed can improve the limiting drawing, and near the bottom dead center, press speed reducing to maximum speed of 10% around, can improve approximately 20% of the maximum limiting drawing.

关 键 词：3次变速 伺服拉深 首次拉深极限 

分 类 号：TG305[金属学及工艺—金属压力加工]