振动式滚磨光整加工过程中的受力测试与分析

发布时间：2018-01-23 04:20

本文关键词： 振动式滚磨光整加工偏心块夹角埋入深度固定工件装夹角作用力测试　出处：《表面技术》2015年07期 　论文类型：期刊论文

【摘要】：目的测试不同加工参数对振动式滚磨光整加工过程中作用力的影响,对实际加工过程中加工参数的选择提供一定的数值指导。方法通过改变偏心块夹角、固定工件埋入深度及固定工件装夹角度,应用动态式压力传感器测试每种加工参数对加工作用力的影响。结果偏心块夹角不同时,磨料的运动形态及运动轨迹差异明显,且偏心块夹角大小对工件的作用力影响显著,偏心块夹角为90°时磨料螺旋运动显著,加工效果好。固定工件埋入深度越深,其所受作用力越大;超过一定范围时,作用力陡增。通过改变固定工件装夹角度,观察磨料流态并测试工件不同装夹角下所受作用力,分析得到在装夹角为20°时磨料会以工件为中心聚集,工件所受作用力最大。结论偏心块夹角不同,磨料的运动流态及对工件的作用力不同,偏心块夹角为90°时光整加工效果最好。埋入深度对工件作用力影响显著,加工过程中应根据工件的加工要求确定合适的埋入深度。固定工件装夹角度不同,磨料流态变化明显,固定工件装夹角为20°时工件所受作用力最大,需根据实际加工要求确定装夹的具体角度。
[Abstract]:Objective to test the effect of different machining parameters on the force in the process of vibratory rolling finishing, and to provide some numerical guidance for the selection of machining parameters in the process of actual machining. The method is to change the angle of eccentric block. The dynamic pressure sensor is used to test the influence of each processing parameter on the machining force. The results show that the angle of eccentric block is different. The movement pattern and trajectory of the abrasive are obviously different, and the angle of the eccentric block has a significant effect on the force of the workpiece. When the angle of the eccentric block is 90 掳, the spiral movement of the abrasive is obvious. The deeper the fixed workpiece is, the greater the acting force is. When the load exceeds a certain range, the force increases steeply. By changing the clamping angle of the fixed workpiece, the abrasive flow state is observed and the force acting on the workpiece at different angles is tested. The results show that when the angle of the abrasive is 20 掳, the abrasive will focus on the workpiece, and the force on the workpiece is the largest. Conclusion the movement and flow state of the abrasive and the force acting on the workpiece are different with the different angle of the eccentric block. When the angle of eccentric block is 90 掳, the processing effect is the best. The embedded depth has a significant effect on the workpiece force, and the suitable embedding depth should be determined according to the machining requirements of the workpiece during the machining process, and the fixed workpiece clamping angle is different. The change of abrasive flow state is obvious. When the angle of fixed workpiece is 20 掳, the workpiece is subjected to the largest force, so the specific angle of clamping needs to be determined according to the actual processing requirements.
【作者单位】：太原理工大学机械工程学院;
【基金】：国家自然科学基金主任基金资助项目(51345010) 高等学校博士学科点专项科研基金资助项目(20131402110002)~~
【分类号】：TG58
【正文快照】： Received:2015-04-07;Revised:2015-05-25振动式滚磨光整加工作为目前应用最广泛、最成熟的一种表面处理方法,可以对不同材料(如钢、铜、铝、胶木等)的中小零件去毛刺、去毛边、除锈、倒圆、倒棱角及去应力,降低零件表面粗糙度值[1—2],提高零件的耐磨性、配合质量、抗疲劳强

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