摘要
为解决5G覆铜板叠层复合材料板材现有的冲压剪切工艺毛刺飞边严重的问题,提出采用烧结金刚石开槽薄片砂轮切磨工艺替代剪切工艺的方法,在分析设计开槽砂轮结构参数的基础上,研制相应的烧结金刚石开槽薄片砂轮,试验研究不同工艺参数对切磨过程上下表面覆铜层加工毛刺的影响规律和磨削区温度的变化规律。试验结果表明:单位Z向磨削力随磨削速度的增大而增大,随进给速度的增大而减小,随砂轮切入角度的增大先增大后减小;且毛刺飞边高度的变化趋势与单位Z向磨削力的变化趋势相反。磨削温度随磨削速度和进给速度的增大而升高,随砂轮切入角度的增大先升高后降低。切磨5G覆铜板的最优参数组合是磨削速度为34.56 m/s,进给速度为1200 mm/min,砂轮切入角度为22.0°,在此参数下加工既能保证毛刺飞边高度小于300μm,又能兼顾较低的磨削区温度。
To solve the problem of burr defects in existing punching 5G copper clad laminate(CCL)composites,a new process of grinding with sintered diamond slotted slice wheel is proposed.Based on the analysis and design of slotted wheel structure parameters,the sintered diamond slotted slice wheel is developed.The influence of different process parameters on the burr of up and low copper layer and the temperature change of grinding zone is studied.The experimental results show that the unit Z-direction grinding force increases with the increase of grinding speed,decreases with the increase of feed speed,and increases first and then decreases with the increase of grinding wheel cutting angle.The trend of burr flash height is opposite to the unit Z grinding force.The grinding temperature increases with the increase of the grinding speed,increases with the increase of the feed speed,and increases first and then decreases with the increase of the cutting angle of the grinding wheel.The optimal parameters for grinding 5G CCL are grinding speed 34.56 m/s,feed speed 1200 mm/min and cutting angle 22.0°.Under this parameter,the height of burr flash is less than 300μm,and the temperature of grinding zone is lower.
作者
高航
杨勇
许启灏
汪佳乐
王勇
GAO Hang;YANG Yong;XU Qihao;WANG Jiale;WANG Yong(College of Mechanical Engineering,Dalian University of Technology,Dalian 116000,Liaoning,China;Dongguan South China Design Innovation Institute,Dongguan 523000,Guangdong,China)
出处
《金刚石与磨料磨具工程》
CAS
北大核心
2021年第3期82-88,共7页
Diamond & Abrasives Engineering
关键词
覆铜板
开槽薄片砂轮
磨削参数
毛刺抑制
磨削烧伤
copper clad laminates
slotted slice grinding wheel
grinding parameters
burr suppression
grinding burn
