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脉冲光纤激光加工36MnVS4连杆裂解槽的研究
引用本文:张冲,王冠,杨志刚,刘赞丰.脉冲光纤激光加工36MnVS4连杆裂解槽的研究[J].激光与红外,2018,48(3):285-290.
作者姓名:张冲  王冠  杨志刚  刘赞丰
作者单位:1.广东工业大学机电工程学院,广东 广州 510006;2.广东四会实力连杆有限公司,广东 四会 526200
基金项目:四会市科技计划项目(No.2016A0918002);广州市科技计划项目(No.201704030063);广州市科技计划项目(No.201704030129)资助
摘    要:为了获得新材料36 MnVS4连杆裂解槽的最优切割质量,采用光纤激光器对36 MnVS4连杆进行了裂解槽激光加工的工艺研究,分析了离焦量、峰值功率、脉冲宽度、切割速度和脉冲频率对裂解槽几何尺寸的影响,通过激光共聚焦显微镜测量对比,研究不同激光工艺参数下裂解槽几何尺寸的变化规律。结果表明:负离焦能加工出质量更好的裂解槽;峰值功率、脉冲宽度、脉冲频率和切割速度对槽深和张角的影响较大,对槽宽和曲率半径的影响较小,但在裂解槽深度为0.5~0.6 mm时,张角在10°~25°的较小范围内变化。

关 键 词:激光切割  连杆裂解  光纤激光器  36MnVS4

Study on fracture splitting groove of 36MnVS4 connecting rod fabricated by pulse fiber laser
ZHANG Chong,WANG Guan,YANG Zhi-gang,LIU Zan-feng.Study on fracture splitting groove of 36MnVS4 connecting rod fabricated by pulse fiber laser[J].Laser & Infrared,2018,48(3):285-290.
Authors:ZHANG Chong  WANG Guan  YANG Zhi-gang  LIU Zan-feng
Affiliation:1.School of Electromechanical and Engineering,Guangdong University of Technology,Guangzhou 510006,China;2.Guangdong Sihui Shili Connecting Rod Co.,Ltd,Sihui 526200,China
Abstract:In order to obtain the optimized cutting quality of fracture splitting groove of 36MnVS4 connecting rod,fiber laser is used to study the laser processing technology of this fracture splitting groove.The effects of defocusing amount,laser peak power,pulse width,cutting speed and pulse frequency on geometric dimension were analyzed.The microstructure of the splitting groove was observed by laser scanning confocal microscope.By comparison,variation law of geometric dimension was obtained under different laser processing parameters.The results indicate that the negative defocusing amount is helpful for the fabrication of fracture splitting groove;laser peak power,pulse width,pulse frequency and cutting speed have great influence on depth and opening angle of the fracture splitting groove,but they have less effect on width and radius of curvature.At the same time,when the depth of crack groove is 0.5~0.6 mm,opening angle usually varies within 10°~25° small ranges.
Keywords:laser cutting  connecting rod splitting  fiber laser  36MnVS4
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