15.    Clearance between punches and cutting sections should reflect the following unless otherwise specified.
除非其它说明，冲头及下模入子之间的间隙应遵循以下标准。
     Material Thickness  材料厚度                            Recommended Clearance per Side 推荐单边间隙
         .0  -    .04                    6 - 7% stock thickness 
         .04  -  .09                    8 - 9% stock thickness
         .09  -  .160                    9 - 10% stock thickness   
         .160  -  up                    Contact Tool Engineer
16.    Punches and buttons are to be standard items whenever possible:
只要可能冲头及嵌套应该式标准的。
a.Standard pierce punches are to be M-2 (H.S.S.) hardened to RC58-60 and ground with a slug ejector whenever possible.
    只要可能，使用带顶出销的标准冲头，材质为M-2、热处理硬度为RC58-60。
b.    Wire E.D.M. “stick” punches having their shape burned through the retainer, are recommended. 
对线割的冲头，推荐在其固定器上线割出其形状。
c.    For all but the most basic shapes. Use heavy duty ball-lock punches with a ½” minimum shank diameter whenever possible.
除了大部分基本形状外，其它所有的冲头只要可能都使用重载荷的球锁冲头，其柄部直径至少为½”。
17.    All non-standard punches and punch sections are to be fabricated from M-2 and heat treated to RC58-60.
所有非标准的冲头及冲头部件都应该有M-2制造并热处理到RC58-60。
18.    When punches of a non standard nature are required in the die, inverted ball lock punches are not acceptable.  Punches will be EDM cut with a L-shape and fitted into a special retainer (See Q-5) for secure placement and ease of removal of punch in die, with normal standard stripper window access.
当要使用非标准形状的冲头时，反方向的球锁是不可接受的，冲头线割成L形状并使用特殊的固定器安全安装，在脱料板上使用窗口入子方便冲头移出。
19.    Shedder pins should be in all punches including blanking, cutting, trimming, and piercing punches.
在所有的冲子中都应该有顶出销，包括下料，冲裁，剪边及冲孔冲头。
20.    Depth of the counter bore for a cap screw in cutting sections is to be equal to height of the head plus die life of sections.  If the die sections permit, provide 1” depth to assure that no screw head will interfere with the part after sharpening the section.
刀口入子中沉头螺丝的深度应等于其头部高度加上刃口高度，如果入子允许，提供1英寸的沉头深度，确保当修磨刀口后其不会与产品干涉。
R.  Springs:          弹簧
1.The use of wire springs should be discouraged, but if they must be used then the lifter must be designed with a cap for easy spring removal.
  不支持使用线弹簧，如果必须使用，则在顶出销上设计**个盖子方便弹簧移出。
2.Compression of springs must not exceed manufacturers  recommendation for high speed and long life.
  弹簧的压缩比不允许超过制造商推荐的高速及长寿时的压缩比。
3.Spring cans are required, as practical and should not disengage from the spring pocket.
  要求使用弹簧罐，在实际中不许脱离弹簧篮子。
4.Drop in nitrogen cylinders are preferred over springs.
优先使用氮气弹簧脱料
5.Springs are not to extend through the die shoe.  When this situation becomes necessary, springs which have to extend through the top of the shoe are to covered by a ¾” plate, mounted to the die shoe to maintain spring pressure.
    弹簧不能延伸出模座，当有必要时，在上模座上增加**块¾”厚的板，固定在模座上承受弹簧力。
S.  Strippers:    脱料板。
1.    Strippers are to be heavily constructed when design dictates.设计时脱料板应很好的构造。          a.  Strippers should be constructed in two or three pieces to aid in handling.
                            脱料板应分成两到三块方便搬运。
b.    Stripper will be established in thickness by size of die.
脱料板厚度由模具尺寸决定。
c.    The minimum thickness for a stripper is 1.250”.
脱料板*小的厚度为1.250”。
2.  Strippers of 2 or 3 piece construction are to have 2 balanced  ¾-10 inch tapped holes for removal with eye bolts.  两到三段的脱料板结构应该由2 平衡的方便起吊螺丝的¾-10牙。
3.  Heel blocks or keys are required to prevent stripper or pads from  moving. Keys should be twice as wide as high.  提供跟刀及键块阻止脱料板及背板移动，键的宽度应为高度的两倍。
4.  Bridge (solid) strippers are not acceptable              桥式固定脱料板是不允许的。
5.The stripper will be drilled, segmented, or windows provided to allow for punches, buttons, or die section removal without removing the stripper.
  在脱料板上钻孔，分段，开窗，以保证在没有移除脱料板的情况下移除冲子，嵌套，及刀口。
a.    Punch removal clearance will accommodate punch puller  and ball release tool.
  冲头移出间隙应适应冲头推出器及球锁释放工具。