The abrasiveness of the grit cloth and the increased pressure exerted on the blank simulate the draw bead effect and help reduce wrinkling in the product area (See Figure 1).

 
  • 引起摩擦的粗布和增大施加在料片上的壓力來(lái)模擬拉延筋的效果從而幫助減小零件起皺(見(jiàn)圖一)。
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