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New forming process design considerations. Finally, after repeated tests using the first mold assembly shown in Figure 4, following the serrated shape from the main layer 3 close together and then laminated to achieve (see Figure 2). The respective elaborate. l Pi -6 Joel Layout Figure 3 Figure 3.1 Variable step implementation of the 3-layer composite seal in the direction of the first step after the forming superimposed serrated forming process involved to produce step changes in the die . Current conventional progressive die each process step is the same spacing, so that each process step of stamping can be performed simultaneously with each other will not produce interference, mold design work can be considered separately for each step of the structure. The step change is different, variable step should be priorities for further work stamping,[link widoczny dla zalogowanych], die design considerations from the overall structure of each process step and the time intervals, and the coordination of actions with each other, to avoid interference: variable step The more you move away from the higher coordination requirements, the time interval is short. From the layout can be seen that the die step size of a total of 4, 30 working step by step from the 5ram, 1 step away from working for the 3.98ram,[link widoczny dla zalogowanych], 16 working step by step distance 3.53ram, the remaining work step by step from the 2.5mm. From the foregoing 3-layer composite seal threading process, the work need to change step 3 step step, that is, the forming and shaping and sawtooth superimposed process step. In the stamping process, the selection process can not be 3, there should be a time difference, in the previous process is completed, work began behind the process, see the interference can not occur. Therefore, the mold design structure using the two stripper plate design (see Figure 4), can be seen from Figure 3 with two working steps are serrated _ stripper plate and plastic unloading process step before use Branch board,[link widoczny dla zalogowanych], composite process step after the stripper plate with and in front of the upper punch forming and shaping the structure is also flexible in order to shape and shaping the end of Qi has some work space for composite forming step. When the upper die down, the former stripper plate binder, forming serrated punch out of shape after forming to continue down the upper die, forming punch compression spring, plastic punch out of plastic, the mold and then continue down, Plastic spring is also compressed on the punch, stripper plate, after No. 10 Total 188 Bin 4 snapped a statement of chairs binder, composite process step to work, after the completion of composite, mold on the uplink module. The whole working process of the time difference is mainly the punch length, height difference before and after the implementation of stripper plate, the actual verification of this structure is available right foot of dry. Reliability is also good. Ai in the slow implementation of progressive die stamping step luan this technique. 3.2 The structure of mold die lance guide column precision guide for the size of the structure of mold are oriented in the size of the guide column, each plays a different role, a large pillar with A detachable sliding Li eye of an ax-oriented structure to facilitate the demolition of this structure, Another mode of high precision assembly seat up and down thick to ensure adequate cut,[link widoczny dla zalogowanych], reducing the external factors on the accuracy of the mold. By sliding a small guide Zhu A plastic guide post. And directed some of the fixed die plate extended to such a small pillar in the discharge board not only for guidance. But also to ensure the accuracy of punch and die sets die, punching accuracy will be ensured. There is also easy to assemble. Simplifies the assembly process. Repair mode, sharpening is also very convenient, and accuracy is not affected. Mold stripper plate used before and after the two structures, in front and serrated stripper plate binder after the forming process step after the stripper plate before work. The formation of the time difference to ensure that variable step stamping. The structure of both sides of the mold is shaped guide hole correcting, correcting for the parabolic shape of screw head, guide is smooth, and because a trapezoid correcting, correcting positioning performance of the more common circular well. In addition, further work on both sides due to bending can not be behind the guide is. Workers are set to vote later step guide is nails, only guide guide rough location, in front of step with the derivative work fine positioning is nailed. 3.3 The formation of intermediate S-shaped film visions in the interval of the formation of S-shaped piece can be seen from the part drawing. S-shaped with a slope. Calculated based on Parts tilt angle and the forming punch and die size. According to the results analysis, if the formation of an S-shaped. Shouli Bu were due sheet. The S-shaped ramp generated during the forming process relative sliding, positioning allowed. To solve this problem, involves forming the mold used. Step 1 for the ramp shape. Sill defects related to the first bevel-shaped (see Figure 5 and the slope in step 1 by forming the structure of a lever mechanism,[link widoczny dla zalogowanych], and the material force when the upper and lower A, produced on the reverse, to avoid sliding to the positioning of forming sheet metal forming accurate . The first involves the deformation is not a result of using the down slope S on the forming die. Practice has proved very good. Dan (b) 4 field 58 in former times the forming process with the main components of processing 4.1 Processing the nail guide is guide pin for the trapezoidal surface conductivity is positive and can not wear one outside the restroom will be trapezoidal and cylindrical guide is part of the grind. trapezoid surface and the cylindrical surface to ensure the relative position accuracy is difficult, therefore, a simple special tool grinding ring C, see 6k use of fixed

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