精密冲压毛坯差动夹紧模的研制

Sergii G. Karnaukh, I. Aliiev, V. Matviychuk, Liubov Tahan
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引用次数: 1

摘要

在机械制造产品的最终成本中,很大一部分贡献来自于毛坯生产的效率,在毛坯生产中使用了无废料剪切。实施剪切切割方法最有希望的是对轧制产品进行差异化夹紧的模具。该工作的目的是开发一种新的模具设计,具有高技术和经济特性的轧制产品的差异化夹紧,并为此类设备的设计提供建议。根据已开发的具有不同夹紧轧制产品的模具结构图,确定了设计特征,这使得创建新的模具设计成为可能。与已知结构相比,在DSEA结构的冲压中,横向尺寸和重量平均减少了25%,开放冲压空间的高度-减少了10%。在垂直平面的分度过程中,保证了滚动轴的位置恒定。排除了通过轧制向夹紧器传递的力。这种邮票刚性高。DSEA设计的邮票已在敖德萨PJSC“Stroygidravlika”推出。实施后的经济效益为100000 UAH。验收结果表明,新设计的模具工作效率高,工作可靠。所切割的工件质量与现代同类设备上切割的工件质量指标相对应。通过对轧制产品差动夹紧模具的理论分析、实验研究和使用经验,了解并提出了对此类模具设计的新建议。主要有:有必要在分离平面两侧对轧制产品提供差异化夹紧,但条件是夹紧力应大于切削力的1.5倍;模体优选为箱形,以补偿推力和力的扭转力矩;动力部分的邮票必须在一个封闭的形式与加强肋,以确保在循环应力条件下的强度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
DEVELOPMENT OF DIES WITH DIFFERENTIATED CLAMP FOR CUTTING BLANKS FOR PRECISION STAMPING
A large contribution to the final cost of machine-building products is made by the efficiency of blank production, in which a waste-free shear cut is used. The most promising for the implementation of the method of shear cutting are dies with a differentiated clamping of rolled products. The aim of the work is to develop a new die design with a differentiated clamping of rolled products with high technical and economic characteristics and recommendations for the design of such equipment. On the basis of the developed graph of constructions of dies with a differentiated clamping of rolled products, design features have been identified, which made it possible to create a new die design. Compared with the known structures, in the stamp of the DSEA structure, the transverse dimensions and weight are reduced by an average of 25%, and the height of the open stamped space – by 10%. In the process of dividing in the vertical plane, a constant position of the rolling axis is ensured. The transfer of force to the clamp through the rolling is excluded. The stamp has high rigidity. The stamps of the DSEA design have been introduced at the Odessa PJSC "Stroygidravlika". The economic effect of the implementation was 100000 UAH. Acceptance test results showed that the dies of the new design are efficient and reliable in operation. The quality of the cut workpieces corresponds to the quality indicators of the workpieces cut on modern similar equipment. On the basis of theoretical analysis, experimental studies and operating experience of dies with differential clamping of rolled products, known and formulated new recommendations for the design of such dies. The main ones are: it is necessary to provide a differentiated clamping of rolled products on both sides of the separation plane, subject to the condition that the clamping force should be one and a half times greater than the cutting force; the die body is preferably box-shaped to compensate for thrust forces and torsional moments of forces; the power parts of the stamp must be made in a closed form with stiffening ribs to ensure strength under cyclic stress conditions.
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