微织构车刀制备与SUS304钢高速微车削试验
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摘要
针对高速微切削过程中微型车刀表面摩擦磨损严重的问题,利用表面非光滑微织构减摩减阻原理,在高速微切削用车刀表面利用激光加工技术制备了微槽、微坑织构,研究了激光加工参数与微织构形貌之间的关系;分析了微织构的摩擦学特性;利用自行研制的高速微车削单元进行微织构刀具及无织构刀具的高速微切削SUS304不锈钢的对比试验,从切削力、切削温度、刀屑接触状态、切屑形态以及已加工表面粗糙度对微织构车刀性能进行评价。结果表明:微槽、微坑织构均可以有效降低刀具表面摩擦因数;在高速微切削过程中可以减小切削力、切削温度,降低刀屑接触长度,改善切屑形态,尤其是微坑织构可明显改善表面质量,可以应用到SUS304不锈钢的高速微加工。
In terms of the serious tool wear during the micro cutting process, micro-pit and micro groove were manufactured by laser on turning tool for high speed micro turning based on the theory of anti-friction and anti-drag of non-smooth micro texture. Relationship between laser processing parameters and morphology of micro-texture were researched and characteristics of friction were also analyzed. Contrast cutting tests of 304 stainless steel with micro-texture and untextured tool were implemented using self-developed high speed micro-cutting unit. Micro-texture performance was evaluated from the cutting force, cutting temperature and tool-chip contact status, chip morphology and machined surface roughness.Experimental results show that micro groove and micro pit can effectively decrease the surface friction coefficient, reduce cutting force, cutting temperature and tool-chip contact length, and improve chip shape. Especially, micro pits structure can obviously improve the surface quality, which can be applied in SUS304 high-speed cutting.
In terms of the serious tool wear during the micro cutting process, micro-pit and micro groove were manufactured by laser on turning tool for high speed micro turning based on the theory of anti-friction and anti-drag of non-smooth micro texture. Relationship between laser processing parameters and morphology of micro-texture were researched and characteristics of friction were also analyzed. Contrast cutting tests of 304 stainless steel with micro-texture and untextured tool were implemented using self-developed high speed micro-cutting unit. Micro-texture performance was evaluated from the cutting force, cutting temperature and tool-chip contact status, chip morphology and machined surface roughness.Experimental results show that micro groove and micro pit can effectively decrease the surface friction coefficient, reduce cutting force, cutting temperature and tool-chip contact length, and improve chip shape. Especially, micro pits structure can obviously improve the surface quality, which can be applied in SUS304 high-speed cutting.
引文
[1]王洪涛,朱华.圆环形微凹坑织构表面的摩擦性能[J].润滑与密封,2015,40(1):49-53.WANG H T,ZHU H.Tribology properties of textured surface with ring-shape pits[J].Lubrication Engineering,2015,40(1):49-53(in Chinese).
[2]项欣,陈平,李俊玲,等.圆凹坑织构对线接触摩擦副摩擦学性能的影响[J].中国表面工程,2015,28(4):33-38.XIANG X,CHEN P,LI J L,et al.Influence of dimple texture on tribological behavior of line contact friction pairs[J].China Surface Engineering,2015,28(4):33-38(in Chinese).
[3]SHUTING L,SASIKUMAR D,ZENG H C.A study of micro pool lubricated cutting tool in machining of mild steel[J].Journal of Materials Processing Technology,2009(209):1612-1620.
[4]吴泽,邓建新,邢佑强,等.椭圆状微织构自润滑车刀切削性能试验[J].农业机械学报,2012,43(7):228-234.WU Z,DENG J X,XING Y Q,et al.Cutting performance of self-lubricating turning tools with elliptical micro-textures[J].Transactions of the Chinese Society for Agricultural Machinery,2012,43(7):228-234(in Chinese).
[5]XIE J,LUO M J,WU K K,et al.Experimental study on cutting temperature and cutting force in dry turning of titanium alloy using a non-coated micro-grooved tool[J].International Journal of Machine Tools and Manufacture,2013,73:25-26.
[6]JOHANNES K,DANIEL B,JENS G,et al.Study on micro texturing of uncoated cemented carbide cutting tools for wear improvement and built-up edge stabilisation[J].Journal of Materials Processing Technology,2015,215:62-70.
[7]NORITAKA K,HIROSHI S,HIDEKI M,et al.Development of cutting tools with microscale and nanoscale textures to improve frictional behavior[J].Precision Engineering,2009(33):248-254.
[8]艾兴.高速切削加工技术[M].北京:国防工业出版社,2004.AI X.High speed machining technology[M].Beijing:National Defence Industry Press,2004(in Chinese).
[9]WIT G,JOEL R,KRZYSZTOF Z.Determination of friction in metal cutting with tool wear and flank face effects[J].Wear,2014,317:8-16.
[10]符永宏,肖开龙,华希俊,等.表面微沟槽车刀的切削试验与性能分析[J].中国表面工程,2013,26(6):106-111.FU Y H,XIAO K L,HUA X J,et al.Cutting trial and performance analysis of surface micro-grooves turing tools[J].China Surface Engineering,2013,26(6):106-111(in Chinese).
[11]李晓舟,于化东,许金凯,等.微切削加工中切削力的理论与实验[J].光学精密工程,2009,17(5):1086-1091.LI X Z,YU H D,XU J K,et al.Theory and experiments of cutting forces in micro-cutting process[J].Optics and Precision Engineering,2009,17(5):1086-1091(in Chinese).
[12]于占江,王雯,张超楠,等.微型车刀微孔织构及高速微车削实验[J].润滑与密封,2016,41(2):18-22.YU Z J,WANG W,ZHANG C N,et al.Design of micro hole texture tool and experimental study on high speed micro-turning[J].Lubrication Engineering,2016,41(2):18-22(in Chinese).
[2]项欣,陈平,李俊玲,等.圆凹坑织构对线接触摩擦副摩擦学性能的影响[J].中国表面工程,2015,28(4):33-38.XIANG X,CHEN P,LI J L,et al.Influence of dimple texture on tribological behavior of line contact friction pairs[J].China Surface Engineering,2015,28(4):33-38(in Chinese).
[3]SHUTING L,SASIKUMAR D,ZENG H C.A study of micro pool lubricated cutting tool in machining of mild steel[J].Journal of Materials Processing Technology,2009(209):1612-1620.
[4]吴泽,邓建新,邢佑强,等.椭圆状微织构自润滑车刀切削性能试验[J].农业机械学报,2012,43(7):228-234.WU Z,DENG J X,XING Y Q,et al.Cutting performance of self-lubricating turning tools with elliptical micro-textures[J].Transactions of the Chinese Society for Agricultural Machinery,2012,43(7):228-234(in Chinese).
[5]XIE J,LUO M J,WU K K,et al.Experimental study on cutting temperature and cutting force in dry turning of titanium alloy using a non-coated micro-grooved tool[J].International Journal of Machine Tools and Manufacture,2013,73:25-26.
[6]JOHANNES K,DANIEL B,JENS G,et al.Study on micro texturing of uncoated cemented carbide cutting tools for wear improvement and built-up edge stabilisation[J].Journal of Materials Processing Technology,2015,215:62-70.
[7]NORITAKA K,HIROSHI S,HIDEKI M,et al.Development of cutting tools with microscale and nanoscale textures to improve frictional behavior[J].Precision Engineering,2009(33):248-254.
[8]艾兴.高速切削加工技术[M].北京:国防工业出版社,2004.AI X.High speed machining technology[M].Beijing:National Defence Industry Press,2004(in Chinese).
[9]WIT G,JOEL R,KRZYSZTOF Z.Determination of friction in metal cutting with tool wear and flank face effects[J].Wear,2014,317:8-16.
[10]符永宏,肖开龙,华希俊,等.表面微沟槽车刀的切削试验与性能分析[J].中国表面工程,2013,26(6):106-111.FU Y H,XIAO K L,HUA X J,et al.Cutting trial and performance analysis of surface micro-grooves turing tools[J].China Surface Engineering,2013,26(6):106-111(in Chinese).
[11]李晓舟,于化东,许金凯,等.微切削加工中切削力的理论与实验[J].光学精密工程,2009,17(5):1086-1091.LI X Z,YU H D,XU J K,et al.Theory and experiments of cutting forces in micro-cutting process[J].Optics and Precision Engineering,2009,17(5):1086-1091(in Chinese).
[12]于占江,王雯,张超楠,等.微型车刀微孔织构及高速微车削实验[J].润滑与密封,2016,41(2):18-22.YU Z J,WANG W,ZHANG C N,et al.Design of micro hole texture tool and experimental study on high speed micro-turning[J].Lubrication Engineering,2016,41(2):18-22(in Chinese).