日本友佳金属工业研制成功了利用板材温差加工拉深件的技术,可有效防止工件起皱。例如,汽车覆盖件大部分是平面加工,但还有局部需要进行胀形、拉深、弯曲等成形加工,板材冲压成形部分往往容易起皱,影响工件质量。经研究改进,将板材成形部位加热, Japan Friends of the good metal industry successfully developed the use of plate temperature difference processing deep drawing of the technology, which can effectively prevent the workpiece wrinkles. For example, the majority of automobile coverings are plane-processed, but there are some parts that need to be bulged, drawn, bent, etc. Forming parts of sheet metal are often easily wrinkled, affecting the quality of the workpiece. After research and improvement, the sheet metal forming parts heating,