皮秒激光标刻小尺寸刀具信息码  

Application Research of Laser Marking Small Size Information Code

作　　者：王阿明 冯爱新[1,2,3] 蒋志航 潘晓铭[1] 余金海 顾新华 Wang Aming;Feng Aixin;Jiang Zhihang;Pan Xiaoming;Yu Jinhai;Gu Xinhua(Zhejiang Provincial Key Laboratory of Laser Processing Robotics,College of Mechanical and Electrical Engineering,Wenzhou University,Wenzhou 325035,Zhejiang,China;Rui’an Graduate School of Wenzhou University,Rui’an325207,Zhejiang,China;China International Science&Technology Cooperation Base for Laser Processing Robotics,Wenzhou University,Wenzhou 325035,Zhejiang,China;Zhejiang Jinlong Automatic Control Co.,Ltd.,Rui’an325207,Zhejiang,China;Wenzhou Star Photonics Co.,Ltd.,Wenzhou 325035,Zhejiang,China)

机构地区：[1]温州大学机电工程学院,浙江省激光加工机器人中重点实验室,浙江温州325035 [2]温州大学瑞安研究生院,浙江瑞安325207 [3]温州大学激光加工机器人国家国际科技合作基地,浙江温州325035 [4]浙江金龙自动控制有限公司,浙江瑞安325207 [5]温州星耀激光科技有限公司,浙江温州325035

出　　处：《应用激光》2024年第4期93-103,共11页Applied Laser

基　　金：浙江省自然科学基金资助(LY20E050027);温州市重大科技创新攻关工业项目(ZG2019002)。

摘　　要：为减少假冒伪劣的数控刀具对刀具市场的危害,数控刀具溯源防伪标刻技术引起大家的重视。目前,对于刀具溯源防伪有图案刻印、信息码标签、射频标签等方式,然而,这些方式易仿制、易脱落、价格高等问题,给刀具用户企业与刀具制造企业带来麻烦。针对上述问题,利用激光技术在硬质合金刀具表面进行2 mm×2 mm信息码标刻试验,研究了激光工艺参数对信息码加工质量和识读效率的影响规律,获得最佳工艺参数:激光功率9 W、激光扫描间距30μm、激光扫描速度1 000 mm/s、激光重复频率为980 kHz。此时读取时间越短,误差相对较小,说明解码速度较快。此外,通过信息码的可读性检验,分析其表面的破损纠错、信息码数据存储量、识别设备的距离和识别角度对识别结果的影响。第一类和第二类破损不影响信息码的读取,第三类和第四类破损影响信息码的读取。在光线正常情况下,在信息存储为6~52个字符之内,识别距离为35~200 mm,识别角度为90°±25°。结果表明,在刀具表面激光标刻小尺寸信息码,可满足大多数精密数控刀具的赋码需求和表面完整度要求,实现了刀具在生产过程中的溯源防伪。Counterfeit and substandard CNC tools pose significant threats to the tool market,prompting interest in traceability and anti-counterfeiting marking technologies.Existing methods,such as pattern engraving,information code labels,and radio frequency tags,suffer from issues of imitation susceptibility,detachment,and high costs,which are problematic for both tool users and manufacturers.To address these issues,we conducted an experiment utilizing laser technology to imprint a 2mm×2mm information code on the surface of a cemented carbide tool.The influence of the laser process parameters on the processing quality and reading efficiency of information codes was studied and the optimum process parameters were obtained:the laser power is 9W,the laser scanning spacing is 30μm,the laser scanning speed is 1000mm/s and laser repetition frequency is 980kHz.In addition,through the readability test of the information code,the influence of the surface damage and error correction,the information code data storage capacity,the distance of the identification device and the identification angle on the identification result was analyzed.In the first and second categories of damage does not affect the reading of the message code,the third and fourth category of damage affects the reading of the message code.Under normal lighting conditions,the message is stored within 6to 52characters,the recognition distance is 35mm to 200mm and the recognition angle is 90°±25°.The results show that laser marking of small-sized information codes on tool surfaces can satisfy the coding and surface integrity requirements for most precision CNC tools,thereby enabling tool traceability and anti-counterfeiting throughout the manufacturing process.

关 键 词：激光标刻 信息码 小尺寸 硬质合金刀具 

分 类 号：TN249[电子电信—物理电子学]