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控制送料进距的尺寸精度,保证搭边和沿边宽度均匀一致是提高冲件尺寸与形位精度以及材料利用率的关键。因此,冲模的进距限位装置的结构选型与设计是冲模设计中的一个重要环节。无废料冲裁要求挡料与限位准确;有废料冲压则希望搭边小而均匀。单冲模多采用固定挡料,要求搭边尽量小,以提高材料利用率;连续模则对送料进距的要求严,否则会降低冲件的尺寸与形位精度;复合模均为模上卸件,为保证操作安全与高的生产率,必须在保证进距尺寸精确的同时,采用压缩空气吹卸冲件、机械手卸件或在可倾压力机上冲压使冲件自动落下。鉴于现有行业与部局标准尚未统一,根据我们掌握国内仪表行业的现状与需要,参照西德工程师协会有关技术规范,介绍与推荐较适用的冷冲模的进距限位装置。
Control of feeding the size of the dimensional accuracy to ensure that the edge and edge along the uniform width is to improve the punch size and shape accuracy and material utilization rate of the key. Therefore, the mold of the stopper spacing device structure selection and design is an important part of die design. No scrap blanking requirements Blocking and limit accurate; there is waste stamping is hope to take a small and even side. Single die with a fixed block, requiring the edge as small as possible, in order to improve material utilization; continuous die on the feed into the strict requirements, otherwise it will reduce the size of the punch and the position accuracy; In order to ensure safe operation and high productivity, it is necessary to blow compressed air into and out of the punched parts while ensuring the accurate dimensioning of the punched parts. The mechanical parts are unloaded or punched on the tilting press to automatically drop the punched parts. In view of the existing industry and ministry standards have not been unified, according to our grasp of the current situation and needs of the domestic instrument industry, with reference to the West German Association of Technical Specifications, the introduction and recommend more suitable die punch into the distance device.