板材充液拉深（hydromechanical deep drawing，HDD）是在拉深凹模中以一定压力液体作为传力介质代替刚性凹模传递载荷，使坯料在液体压力作用下贴靠凸模拟实现金属板材零件的成形。与传统拉深工艺相比，板料成形性显著提高，成形表面...板材充液拉深（hydromechanical deep drawing，HDD）是在拉深凹模中以一定压力液体作为传力介质代替刚性凹模传递载荷，使坯料在液体压力作用下贴靠凸模拟实现金属板材零件的成形。与传统拉深工艺相比，板料成形性显著提高，成形表面质量好，模具寿命长。随着成形设备和相关技术的发展，充液拉深工艺被广泛应用于汽车、飞机制造业。展开更多
Deep drawing is one of the most important processes for forming sheet metal parts.It is widely used for mass production of cup shapes in automobile,aerospace and packaging industries.Cup drawing,besides its importance...Deep drawing is one of the most important processes for forming sheet metal parts.It is widely used for mass production of cup shapes in automobile,aerospace and packaging industries.Cup drawing,besides its importance as forming process,also serves as a basic test for the sheet metal formability.The effect of equipment and tooling parameters results in complex deformation mechanism.Existence of thickness variation in the formed part may cause stress concentration and may lead to acceleration of damage.Using TAGUCHI's signal-to-noise ratio,it is determined that the die shoulder radius has major influence followed by blank holder force and punch nose radius on the thickness distribution of the deep drawn cup of AA 6061 sheet.The optimum levels of the above three factors,for the most even wall thickness distribution,are found to be punch nose radius of 3 mm,die shoulder radius of 8 mm and blank holder force of 4 kN.展开更多
文摘板材充液拉深（hydromechanical deep drawing，HDD）是在拉深凹模中以一定压力液体作为传力介质代替刚性凹模传递载荷，使坯料在液体压力作用下贴靠凸模拟实现金属板材零件的成形。与传统拉深工艺相比，板料成形性显著提高，成形表面质量好，模具寿命长。随着成形设备和相关技术的发展，充液拉深工艺被广泛应用于汽车、飞机制造业。
文摘Deep drawing is one of the most important processes for forming sheet metal parts.It is widely used for mass production of cup shapes in automobile,aerospace and packaging industries.Cup drawing,besides its importance as forming process,also serves as a basic test for the sheet metal formability.The effect of equipment and tooling parameters results in complex deformation mechanism.Existence of thickness variation in the formed part may cause stress concentration and may lead to acceleration of damage.Using TAGUCHI's signal-to-noise ratio,it is determined that the die shoulder radius has major influence followed by blank holder force and punch nose radius on the thickness distribution of the deep drawn cup of AA 6061 sheet.The optimum levels of the above three factors,for the most even wall thickness distribution,are found to be punch nose radius of 3 mm,die shoulder radius of 8 mm and blank holder force of 4 kN.
