针对货车板材冲压件，就开发其CAPP系统进行了研究。
Develops a CAPP programme system for the sheet metal stamping of freight cars.
回弹是板材成形过程中不可避免的一个普遍现象，直接影响到冲压件的尺寸精度和零件最终形状。
Springback is an inevitable and universal phenomenon in sheet metal forming, which may affect the tolerance and final shape of stampings.
金属板材加工是金属加工的一个重要门类，其冲压件广泛应用于国民经济的各行各业。
Being an important category of metal machining, metal sheet punching has its finished parts widely applied in many industries.
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