我们车间原来的生产工艺基本上是锤上胎模锻造,在汽锤上操作,有很多缺点:1.很不安全,容易发生人身事故,2.笨重的体力劳动,3.效率低,4.质量差,等等。由于这些原因,我们车间过去事故最多,生产最被动。后来从上海学习了扩孔工艺,稍减少一些笨重的体力劳动,但在这条工艺路线上尚配有2台150公斤空气锤作毛坯冲孔用,所以上列缺点并未完全排除。我们早就下了决心,千方百计减少甚至完全摆脱气锤操作,要闯出一条新路来。我们首先对冲孔工艺作了改进,在60吨冲床上设计了一付四工位的连续冲孔模,配在φ150扩孔机的联线上。这四工位的模子,不但可冲孔,又能压高度,所以一台冲床就能代替2台气锤和一台冲床,这样在扩孔联线上就取消了气锤操作。 目前我们车间已有冲床100吨160吨和250吨等设备。100吨用冲压外径42毫米以下的产品,160吨冲压外径42～64毫米及外径在100毫米以内的圆锥轴承内圈,250吨 Our workshop is basically the original production process of the hammer on the tire forging, operating on the hammer, there are many shortcomings: 1. Very unsafe, prone to personal accidents, 2. Heavy physical labor, 3. Low efficiency, 4. Quality Poor, and so on. For these reasons, we have had the most accidents in the workshop and the most passive production. Later from Shanghai to learn the reaming process, a slight reduction of some heavy manual labor, but in this process is still equipped with two 150 kg air hammer for blank punching, so the above shortcomings have not been completely ruled out. We have long been determined to make every effort to reduce or even completely get rid of the hammer operation and break a new path. We first made an improvement on the punching process. We designed a continuous punching mold with four working stations on a 60-ton punching machine and matched it with the connecting line of φ150 reaming machine. The four-station model, not only punching, but also a high degree of pressure, so a punch can replace two sets of hammer and a punch, so reaming hole on the cancellation of the hammer operation. At present, we have punch presses 100 tons 160 tons and 250 tons and other equipment. 100 tons of stamping with an outer diameter of 42 mm below the product, 160 tons punching 42 to 64 mm in diameter and outside diameter of 100 mm within the cone bearing inner ring, 250 tons