基于传感器增强的测力仪实验平台扩展方法  

Method of Extending Dynamometer Platform based on Sensors to Enhance

作　　者：邵文瑶 李迎光[1] 郝小忠[1] 刘长青[1] 

机构地区：[1]南京航空航天大学

出　　处：《工具技术》2015年第4期70-76,共7页Tool Engineering

基　　金：国家科技重大专项(2012ZX04010041)

摘　　要：针对现有测力平台无法满足大尺寸特征实验、微细切削实验以及缺乏多信号融合等问题,提出了基于传感器增强的测力仪实验平台扩展方法。以Kistler 9257B压电测力仪为基础,对测力平台进行扩展。通过增加大尺寸测力板满足大尺寸特征的切削实验要求。同时增加加速度传感器,通过测量加工过程中工件的加速度,对切削力进行惯性力补偿,提高切削力的测量精度,并可用于微细切削实验。此外通过将声发射传感器监测加工过程中的声发射信号同切削力和振动信号融合,为加工过程中刀具状态的辨识提供依据。验证表明,经过扩展的测力平台可以达到预期的效果。In order to address the issues of the requirement for large machining features parts and micro-machining cutting experiment,and the fusion of multi-sensor information,a method of extending dynamometer platform based on sensors to enhance is proposed in this paper. The dynamometer platform is extended on the basis of the Kistler 9257 B Piezoelectric dynamometer. The requirement of large machining features parts experiment is met by enlarging the size of top plate for dynamometer. At the same time,an acceleration sensor is used to monitor the vibration of the part during the machining process,the accuracy of dynamometer is improved by calculating the cutting force and inertial force,so that,the micro-machining cutting force can also be monitored. In addition,the state of the cutting tool can be recognized by fusing the cutting force,vibration signal and acoustic emission signal,which are got during the machining process. The experimental verification shows that the proposed extending dynamometer platform can achieve the desired effects.

关 键 词：测力仪 加速度传感器 声发射 微细切削 

分 类 号：TG501.3[金属学及工艺—金属切削加工及机床]