| 引用本文: | 李建广,姚英学,赵航,李大博.SiCp/Al窄槽的铣磨实验研究(Ⅱ)——表面粗糙度[J].哈尔滨工业大学学报,2012,44(9):57.DOI:10.11918/j.issn.0367-6234.2012.09.010 |
| LI Jian-guang,YAO Ying-xue,ZHAO Hang,LI Da-bo.Experimental research on mill-grinding SiCp/Al narrow slotPart II: surface roughness[J].Journal of Harbin Institute of Technology,2012,44(9):57.DOI:10.11918/j.issn.0367-6234.2012.09.010 |
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| 摘要: |
| 针对SiCp/Al构件加工中大去除余量、高精度的需求,以铣磨加工窄槽为对象,实验研究电镀金刚石砂轮铣磨加工SiCp/Al窄槽中的加工参数、铣磨工具对已加工表面粗糙度的影响．实验分析表明:铣磨速度、进给速度、砂轮粒度和结构对SiCp/Al铣磨表面的粗糙度有显著影响,砂轮速度对表面粗糙度的影响呈鞍型,先降后增;表面粗糙度随进给速度的增大而增大;不开槽砂轮可获得低粗糙度的表面．采用降低进给速度,提高砂轮速度,不开槽砂轮可获得低粗糙度的加工表面．在实验条件下,最佳铣磨参数组合是磨削速度9.42 m/s,进给速度20 mm/min;如采用开槽砂轮铣磨窄槽,则铣磨工具的容屑槽螺旋角可选50°． |
| 关键词: 碳化硅颗粒增强铝基复合材料 铣磨 表面粗糙度 加工参数 铣磨工具 |
| DOI：10.11918/j.issn.0367-6234.2012.09.010 |
| 分类号:TG506.9 |
| 基金项目:教育部博士点基金资助项目(200802130006); 2010哈尔滨市科技创新人才研究专项资助项目(RC2010XK006003). |
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| Experimental research on mill-grinding SiCp/Al narrow slotPart II: surface roughness |
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LI Jian-guang, YAO Ying-xue, ZHAO Hang, LI Da-bo
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School of Mechatronics Engineering, Harbin Institute of Technology, 150001 Harbin, China
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| Abstract: |
| To meet the need on machining SiCp/Al surface with high efficiency and accuracy, with electroplated diamond grinding wheel and taking mill-grinding narrow slot as a typical example, the influence of machining parameters and mill-grinding tool on SiCp/Al machined surface roughness was experimentally investigated. The results show that the machining parameters and mill-grinding tool both have significant influence on the surface roughness. The influence of grinding speed on roughness appears saddle-shaped, i.e. decreased first, then increase while the roughness is increased as federate increasing. The grinding wheel without flutes can produce lower roughness than that with flutes. Therefore, higher grinding speed, lower federate with fluteless grinding wheel are recommended. Under the given experimental conditions, the optimum combination of machining parameters are grinding speed of 9.42 m/s and federate of 20 mm/min. And if a fluted grinding wheel will be applied to machine narrow slot, the recommended helix angle of the flutes is about 50° to achieve lower roughness. |
| Key words: SiCp/Al mill-grinding surface roughness machining parameters mill-grinding tool |
