环模修复机模孔定位关键技术研究

Research on Key Technology Towards Locaton of Die Hole in Intelligent CNC Ring-die Repair Instrument

摘要:

环模在饲料加工机械中是一个易阻塞的核心部件；国内外常见清理手段是人工手动逐孔清理；针对现有技术存在清理效率低、易产生误操作及毁坏环模等瓶颈,提出了一套有效的环模模孔定位方法；首先运用磁敏元件检测漏磁原理,分析了模孔定位方法的可行性；然后根据电磁屏蔽对屏蔽材料的选择角度,制作关键探测探头；最后根据捕获模孔的信号特征,基于高效的黄金分割优化搜索的设计思想,构建了环模模孔定位算法模型,分析了模孔定位方案的有效性；结果表明研制的修复机系统模孔定位精度在mm级以下,模孔刮伤率大大降低,进而环模的使用寿命得到延长。

Abstract:

Ring mold is a core but easily blocked component in feed processing machinery.The Common cleaning methods are manually holes by holes both in China and abroad.For those bottlenecks just like low cleaning efficiency,vulnerable to misoperation by carelessness and damage the ring mold,an effective method was proposed to locate the die of ring mold. First,the feasibility towards the location the die of ring mold was studied based on MFL by magnetic sensitive element.Then,a detection probe was made on the basis of the relationship between electromagnetic shielding and shielding materials. Finally,according to the captured signal characteristics of die hole,a ring die bore localization algorithm mode was built to analyze the effectiveness of the die hole positioning program based on the design ideas of efficient Golden search optimization. The results showed that the positioning accuracy of system developed was below the rank of mm. The scratch rate of die hole was greatly reduced. And thus the service life of ring mold was extended.