基于反馈插补算法的薄壁塑料零件数控加工变形误差控制  

Deformation Error Control of Thin-walled Plastic Parts in CNC Machining Based on Feedback Interpolation Algorithm

作　　者：桑晶 SANG Jing(Nanjing Institute of Mechatronic Technology,Nanjing 211306,China)

机构地区：[1]南京机电职业技术学院,江苏南京211306

出　　处：《机械制造与自动化》2025年第1期81-84,94,共5页Machine Building & Automation

基　　金：南京机电-南钢教师企业实践流动站项目(Ldz2023001)。

摘　　要：为了控制数控加工过程中零件表面产生的变形误差,提出基于反馈插补算法的薄壁塑料零件数控加工变形误差控制方法。对薄壁塑料零件数控加工过程展开建模分析,发现切削深度是影响加工变形误差的主要因素。将切削深度作为长短期记忆网络的输入,预测薄壁塑料零件的数控加工变形误差;采用反馈插补算法确定零件表面变形的关键区域,并根据计算得到的变形量修正切削深度,实现误差补偿。实验与分析结果表明:在不同切削位置处,可准确地预测薄壁塑料零件的数控加工变形误差,且控制后得到的零件表面变形明显改善。To control the deformation errors generated on the surface of the parts during the CNC machining process,a deformation error control method for thin-walled plastic parts CNC machining based on feedback interpolation algorithm is proposed.The CNC machining process of thin-walled plastic parts are modeled and analyzed,finding that cutting depth is the main factor affecting machining deformation error.The cutting depth is used as input for the long short-term memory network to predict the deformation error of thin-walled plastic parts during CNC machining.The feedback interpolation algorithm is applied to determine the key areas of surface deformation of the part,and the cutting depth is corrected based on the calculated deformation amount to achieve error compensation.The experimental and analytical results indicate that the CNC machining deformation error of thin-walled plastic parts can be accurately predicted at different cutting positions,and the surface deformation of the parts obtained after control is significantly improved.

关 键 词：反馈插补算法 建模分析 薄壁塑料零件 长短期记忆网络 变形误差控制 

分 类 号：TH164[机械工程—机械制造及自动化]