基于多工艺复合的超硬磨料砂轮修整技术与机理研究

项目名称： 基于多工艺复合的超硬磨料砂轮修整技术与机理研究

项目编号： No.U1204517

项目类型： 联合基金项目

立项/批准年度： 2013

项目学科： 机械工程学科

项目作者： 杨志波

作者单位： 河南理工大学

项目金额： 30万元

中文摘要： 超硬磨料砂轮的修整技术是实现难加工材料精密、超精密加工的关键技术，超硬磨料砂轮（尤其是复杂型面砂轮）修整效率低、精度难控至今仍是制约它发展的瓶颈性难题，本研究主要为破解这一难题而提出基于激光热效应的二维超声振动机械复合在线修整技术。以提高砂轮修整质量、修整效率为目标，通过研究二维超声复杂声学系统的动态特性，建立其阻抗匹配模式和系统振动稳定性模型，突破二维振动模式超声声学系统设计的关键技术，以典型的密实型超硬磨料砂轮为修整对象，以实现激光辅助加热温度最优控制为前提，进行工艺参数优化试验，研究激光超声复合修整的材料去除机理和工艺规律，建立激光超声复合修整过程中材料去除热力动态耦合模型，揭示工艺参数对砂轮廓形及磨粒微观状态形成的影响规律，在此基础上架构在线监测与修整系统，实现修整过程的自动化、智能化；为提高超硬磨料砂轮修整质量，进而提高难加工材料高效精密加工效率及加工精度奠定理论与技术基础。

中文关键词： 复合修整；二维超声；激光加热；超硬磨料砂轮；在线修整

英文摘要： Along with the increase of hard-brittle materials such as engineering ceramics, optic glass and single crystal silicon applying in engineering fields in recent decades, diamond grinding wheels have been employed more and more frequently to obtain the high dimension and form accuracy. The trimming skill which uses laser auxiliary heating and two-dimensional ultrasonic vibration mechanical was put forward,by combination the mechanical trimming method and theory of special processing. According to study the dynamic behavior of the two-dimensional ultrasonic complex acoustic system, the impedance matching model and the system model of vibration stability was established;the key skill of design of two-dimensional vibration mode ultrasound acoustic system was gained,the trimming device of the complex laser and ultrasound was set up.At the condition of that the typical thick super abrasive wheel was an object and the optimal temperature which was gotten by laser auxiliary heating was premise,the experiment of process parameters optimization was done so as to smart the mechanism of materials removal and the process regulaiton,establish the thermal dynamic coupling model of the compsite of laser and trimming study the influnce regulation of process parameters to the profile of wheel and the microscopic status of grains.B

英文关键词： Complex dressing；2-dimensional Ultrasonic；Laser assisted heating；Super-abrasive Grinding Wheel；On-line Dressing