沖壓件成形原理：沖壓是靠壓力機和模具對板材、帶材、管材和型材等，施加外力，使之產生塑性變形或分離，從而獲得所需形狀和尺寸的工件（沖壓件）的成形加工方法。
Forming principle of stamping parts: stamping is a forming processing method for sheet, strip, pipe and profile by applying external force by press and die to produce plastic deformation or separation, so as to obtain the required shape and size of the workpiece (stamping part).
工藝分類：沖壓主要是按工藝分類，可分為分離工序和成形工序兩大類。
Process classification: stamping is mainly classified by process, which can be divided into separation process and forming process.
分離工序（沖裁工序）：其目的是使沖壓件沿一定輪廓線從板料上分離，同時保證分離斷面的質量要求。分離工序：沖裁（落料、沖孔）、剪切、切口、切邊、剖切。
Separation process (blanking process): its purpose is to separate the stamping parts from the sheet along a certain contour line, and ensure the quality requirements of the separation section. Separation process: blanking (blanking, punching), cutting, cutting, edge cutting, cutting.
圖片
picture
沖裁時板料的變形過程
Deformation process of sheet metal during blanking
變形過程：