电火花整形金刚石微粉砂轮的工艺试验研究  

Experimental study of diamond micro powder grinding wheel based on electrical discharge dressing

作　　者：关佳亮[1] 戚泽海 孙晓楠[1] 路文文 

机构地区：[1]北京工业大学机械工程与应用电子技术学院,北京100124

出　　处：《制造技术与机床》2018年第3期127-130,共4页Manufacturing Technology & Machine Tool

摘　　要：针对ELID磨削轴承钢内圆存在的金属结合剂超硬磨料砂轮整形难题,采用电火花整形技术对金刚石微粉砂轮进行工艺试验研究。在单脉冲放电能量理论指导下,进行正交试验探究脉冲电流、放电电压及占空比对砂轮表面三维粗糙度的影响及其最优参数组合。研究结果表明在脉冲电流10A,放电电压70 V,占空比20%的最佳工艺参数下进行电火花精密整形得到砂轮表面三维粗糙度的评价参数S_P、S_Q、S_(SK)及S_(KU)分别为13.05μm、4.89μm、-0.35、5.307和得到精度为4.18μm的砂轮圆度。最后将电火花精密整形后的W40粒度金刚石砂轮应用在ELID磨削轴承钢内圆中得到表面粗糙度为96 nm的加工表面。Aiming bearing at shaping problem of metal forming agent super - hard abrasive grinding wheel in ELID grinding steel internal processing, experimental research of diamond micro powder grinding wheel were carried out by electrical discharge dressing technology. Under the theory of single pulse discharge energy, orthogonal experiment was carried out in order to research the influence of pulse current, discharge voltage, duty ratio on grinding wheel surface three - dimensional roughness and its optimal technological parameters. Studies show that evaluation parameters of grinding wheel surface three - dimensional roughness with Se of 13.05 μm, So of 4. 89 μm, SSK of -0. 35 and SSK of 5. 307 and wheel roundness accuracy of 4. 18 μm are obtained with the pulse current of 10 A, the discharge voltage of 70 V and the duty ratio of 20%. The machined surface roughness of Ra96 nm is obtained by ELID grinding bearing steel internal with W40 particle size diamond shaping. wheel under electrical discharge dressing precision

关 键 词：金刚石微粉砂轮 电火花整形技术 正交试验 工艺参数优化 实验验证 

分 类 号：TH161.14[机械工程—机械制造及自动化]