改进定子冲剪模凸模固定结构

在电动机生产过程中，冲片的制造时间约占整个生产周期的20％，因此，此环节的顺畅程度直接影响整个生产流程。冲片的制造采用冷冲压工艺，即用冲床通过模具对冲片毛坯加压，利用冲模的凸凹模组成上、下刃口，使其产生塑性变形、分离，

高速冲剪模的设计与制造

介绍了高速冲剪模总体结构特点及关键零部件的设计及制造工艺

微车垫套无搭边落料冲剪模的设计

通过对垫套技术参数的分析 ,选择了无搭边排样的落料工艺方案 ,材料利用率由原来的86%提高到 1 0 0 % ,冲裁力也仅是有搭边时的 43% ,介绍了模具的结构特点 ,其结构简单可靠 。

玻璃釉(独石)电容器瓷片自动送料组合刀片冲剪复合模

玻璃釉(独石)电容器即陶瓷电容器的瓷片,其成片成瓷工艺,大致是这样的:用银镁酸铅(PbMg_(2/3)Ag_(1/3)O_3)、钛酸铅(PbTiO_3)、钨铬酸铅(PbCr_(1/2)WO_3)按一定比例混合球磨,粒度在0.8～1.2mm左右,制成陶瓷粉料,再与聚乙烯醇缩丁醛、乙醇、水、甘油等混合而成的粘合剂混合。

Cutting Behavior of Acrylic Thick Sheet Subjected to Squared Punch Shearing

This paper describes the cutting behavior ofa 1 mm thickness acrylic worksheet sheared by a squared punch/die apparatus. In the shearing experiment, a load cell and a high speed camera were used for investigating the shearing load response and the deformation behavior of the worksheet. It was found that the mechanical parameters, i.e., the punch-die clearance and the feed velocity of the punch, affected the shearing load response, the cracks initiation behavior and the separation capability of the worksheet. Additionally, a FEM （finite element method） analysis simulating a two dimensional shearing deformation was carried out in order to investigate the influence of punch-die clearance on the failure patterns. Through this simulation, it was revealed that the punch-die clearance remarkably affected the tensile state of stress concentrated in the sheared zone and the crack initiation behavior of the worksheet.

板材冲剪力影响规律的研究

针对目前冲剪切缝合机的设计,分析其冲剪切的内在机理及影响冲剪力大小的因素,通过实验及仿真数据分析建立了板材厚度与冲剪力的图表关系以及冲模间隙与冲剪力的图表关系,从而定性定量的分析了冲剪力与冲剪材料和冲剪间隙这两个主要影响因素之间的关系,进而对冲剪条件的建立以及优化冲剪结构等给予分析说明,以有利于辅助冲剪机构设计时应考虑冲剪切本身的固有特征的要求,以寻求最佳的、可靠的、简单的、稳定的冲剪切机构,以满足现代高效生产的需要。