英语翻译2.Tooling equipment and method2.1.Solution for a combine

英语翻译
2.Tooling equipment and method
2.1.Solution for a combined forming and punching process
Principally,two typical methods are available to produce hole patterns,one of these being a combined blanking and piercing tool and the other being a progressive tool.Because of the high tool forces caused by several hundred simultaneously and closely positioned punches in the area of the cutting edges the first method is not of further interest.A solution using a classical progressive tool would combine a punching-followed by a forming step in order to realize the desired part geometry.Yet,the required tolerances seem to also make this process inadequate.A further approach could lie in the use of a perforated shaving foil in a modified die.In this method,the cutting edge is designed with a conically shaped chamfer.The advantage of this approach comes from the fact that one single stroke creates the entire hole including its raised edges of the holes,and the concentricity between raised edge and circular hole is merely dependent on the production accuracy of the blanking die.Fig.2 shows this procedure in four sequences.To begin with,the foil is clamped down with the pressure plate (a).Following this,the punch draws the foil downward into the conically shaped chamfer until the cutting edge is reached (b).Next,the actual punching process (c) begins.Through the bending operation,a residual stress in the foil leads to a minimal springback behavior following the punch’s retreat (d).Incrementally,the entire hole pattern is created by repositioning of the foil.What makes this process so favorable is the precision of the hole’s raised edges,which remain constant throughout the hole pattern,since the punch- and blanking die combination remains the same for the entire forming and punching procedure.
2.2.Method concept
The automated punching procedure displays the chosen solution for the production of hole patterns with raised edges,based on advantages in tool precision as compared to a classic progressive tool or a combined blanking and piercing tool.For this solution,one hole diameter requires only one punch and one blanking die.To produce a hole pattern the foil is positioned in x- and y- direction through a computerized numerical control (CNC).Following every positioning move,a punching stroke is carried out.The flexibility of this process and the relatively simple and precise manufacturing of the required tool are opposed by a relatively complex realization of a controlled X-Y stepper and a longer processing time.Still,a very important characteristic of this
method lies in the creation of the raised edges.Since only a single punch and blanking die set is used to construct all of the holes in the shearing area,the raised edges of all holes are equal.

2.工装设备和方法
2.1 组合的成型和冲压工艺的解决方案
原则上,两种典型的方法可以组成产生孔模式,这是一个综合的消隐和刺入的工具之一,另一个是一个渐进的工具.由于几百同时密切定位区中的第一种方法的切削刃拳的力量是没有进一步的兴趣造成的高工具,.使用一个古典渐进工具的解决方案将结合由成形的一步冲压其次,以实现所需的零件的几何形状.然而,所需的公差似乎也使这个过程不足.另一种做法,可能在于在一个穿孔刀网在使用修改后的模具.在此方法中,尖端的设计与锥形倒角.这种方法的优点来自于一个事实,即一个单笔划创建包括其提出孔的边缘,整个洞之间凸起的边缘和圆形孔的同心度是仅仅依赖冲裁模的生产精度.图2显示了此过程中,在四个序列.首先,金属箔与压盘（一）取缔.在此之后,冲床提请箔成锥形倒角尖端向下,直到达到（B）.接下来,开始实际的冲压过程（三）.通过弯曲的操作,在铝箔的残余应力导致打孔的撤退（四）最小的回弹行为.递增,整个洞创建模式重新定位的陪衬.是什么使这一进程,以便有利的是精密孔提出的边缘,保持整个洞模式不变,因为冲压和冲裁模组合仍然是整个成型和冲压过程相同.
2.2.法的概念
自动冲压过程显示孔图案有凸起的边缘,根据刀具精度的优势相比,一个典型的渐进式的工具或组合的消隐和穿孔工具,生产选择的解决方案.此解决方案,一个孔直径只需要一个冲床,冲裁模.要产生一个洞模式,通过计算机数值控制（CNC）在x和y方向定位箔.每一个定位移动,冲压行程进行.在这个过程中的灵活性和所需的工具比较简单和精确的制造都反对由一个受控XY步进电机和较长的时间处理相对复杂的实现.尽管如此,这个非常重要的特点
方法在于创造凸起的边缘.由于只有单冲压和冲裁模集被用来构建所有剪切面积的孔,孔提出的边缘都是平等的.