摘要
通过对磨削进程中工件表面轮廓横截面形成的分析,得出在理想条件下:工件表面轮廓横截面为阿基米德螺线;结合最小二乘法原理,提出了一种尺寸补偿法的在线圆度评定技术:通过对主动测量仪测头测得值进行尺寸补偿,减弱和消除砂轮进给的影响,进而实现在线圆度误差评定。实验证明:在线圆度评定误差值与磨削完成时工件圆度误差值两者相差不超过10%,验证了该在线圆度评定理论的可行性;机后圆度评定误差值与在线圆度评定误差值两者差值,与工件旋转一周时砂轮进给量的相差不超过18%,验证了尺寸补偿法的在线圆度评定可有效减弱和消除砂轮进给对圆度评定的影响。该研究对于实现磨加工主动量仪在线圆度评定具有重要意义。
Through the analysis of the formation of the cross section of the surface profile of the workpiece in the grinding process, come to under ideal conditions: workpiece surface profile cross section is the spiral of Archimedes; Combined with the least square method, an on-line roundness evaluation technique based on dimension compensation is proposed: through the active measuring instrument measuring head measured value dimension compensation, weakening and eliminating the influence of grinding wheel feed, and then realize the on-line roundness error evaluation. Experimental proof: The difference between the error value of online roundness evaluation and the roundness error of workpiece when the grindt^ng finish" is not more than 10%, h verifies the feasibility of the theory of online roundness evaluation. The difference between the value of roundness evaluation error when the grinding finish and online roundness error is not more than 18% with the grinding wheel feed rate in a week with the rotation of the workpiece, verify the Online roundness evaluation based on dimension compensation can effectively reduce and eliminate the effects of grinding feed on roundness. This research has important signifcance for the realization of the on-line roundness evaluation of grinding active measuring instrument.
出处
《机械设计与制造》
北大核心
2018年第2期1-4,共4页
Machinery Design & Manufacture
基金
河南省基础与前沿技术研究计划项目(142300410081)
河南省产学研合作项目(142107000014)
河南省自然科学基金资助项目(162300410251)
国家自然科学基金(51775515)
关键词
磨加工
主动测量仪
最小二乘法
尺寸补偿
在线圆度评定
Grinding
Active Measuring Instrument
Least Square Method
Size Compensation
Online Roundness Evaluation