搅拌机叶片冲压成形滑移量预测及试验研究  

Experimental research and slip prediction of mixing blade bending in blender

作　　者：陈泷[1] 王祥[1] 陈炜[1] 徐雪来 袁豹[1] 

机构地区：[1]江苏大学机械工程学院,江苏镇江212013

出　　处：《锻压技术》2014年第10期38-42,共5页Forging & Stamping Technology

基　　金：2012年江苏大学工业中心大学创新实践基金资助项目

摘　　要：搅拌机叶片的现有生产方式是自由弯曲成形,无压边装置定位夹紧,叶片在成形中会因受力不均而发生滑移,影响叶片的精度。但根据滑移量进行前期形状补偿能减小甚至消除滑移产生的精度问题,而且准确、快速地获得滑移量能保证产品质量,提高生产效率。本文通过对搅拌机叶片冲压成形的数值模拟,预测了成形后的叶片滑移量;同时,进行了叶片冲压成形试验并测量其实际滑移量。对比发现滑移量预测值和实测值的变化趋势基本吻合,表现为叶片四角滑移较大、中部滑移较小,滑移量预测值和实测值两者之间误差稳定;模拟量经处理后基本能代表实际量,验证了有限元模拟方法在搅拌机叶片冲压成形滑移量预测中的有效性。The present production method of mixing blade in blender is free bending, and the blade will be shifted in the bending process because of the uneven force without a blank holder, so the bending precision of blade is affected greatly. The shape compensation in ad- vance according to the slip can decrease or even avoid the shaping error, which can get an accurate slip quickly, and the quality and efficiency can be greatly improved. The blade slip was predicted by the numerical simulation about the bending process, and the bending experiment was carried out at the same time and the blade slip was measured. The variation trend of the calculated values and the measured values was geuerally in agreement with the measured values. The result shows that the sllp value on the blade comer is larger and the slip value in the middle is smaller, and the error between them is stable through comparison. The simulated results after processing can repre- sent experimental data generally, which shows that the finite element simulation method is effective in the prediction of the blade slip during bending.

关 键 词：搅拌叶片 滑移量预测 自由弯曲成形 

分 类 号：TU646[建筑科学—建筑技术科学]