一、基本情况钛板(TA2板0.3)双曲度小蒙皮是直升飞机整流罩中起隔热作用的内蒙皮零件。如图1、图2。 2.在机床上配合手工成形下陷及凹坑; 3.施加补拉力补拉蒙皮以减少回跳, 4.在机床上再次手工校形下陷及凹坑; 5.取出零件在机外校形及切割余料。二、工艺分析 1.确定拉形次 First, the basic situation Titanium (TA2 board 0.3) Double curl is a helicopter fairing in the role of insulation from the inner skin parts. Figure 1, Figure 2. 2. In the machine with the hand-formed sag and depression; 3. Applied to make up the pull pull skin to reduce the back jump, 4. On the machine once again hand-shaped depression and pit; 5. Remove the parts in the machine calibration And cutting more than expected. Second, process analysis 1. Determine the second pull