单刃螺旋铣刀铣削中密度纤维板的表面粗糙度建模与优化  

Modeling and optimization of surface roughness for milling medium density fiberboard with single edge helical milling cutter

作　　者：张云 王宝金 ZHANG Yun;WANG Baojin(College of Materials Science and Engineering,Nanjing Forestry University,Nanjing 210037,China)

机构地区：[1]南京林业大学材料科学与工程学院,南京210037

出　　处：《林业工程学报》2024年第3期61-68,共8页Journal of Forestry Engineering

基　　金：国家重点研发计划(2022YFD2200705);江苏省研究生工作站课题。

摘　　要：中密度纤维板(MDF)被广泛应用于木质家具行业,螺旋齿铣削加工具有加工过程稳定、加工表面质量好等优点,与多刃螺旋铣刀相比,单刃螺旋铣刀在板材铣削加工中具有独特的优势。在实际生产中,常采用单刃螺旋铣刀对中密度纤维板进行开料铣削加工,故研究单刃螺旋铣刀铣削加工中密度纤维板的切削性能具有一定的理论意义和实用价值。采用直径为6 mm的单刃螺旋铣刀对中密度纤维板进行了铣削试验研究。在采用折线图法考察进给速度和铣削深度对铣削加工表面粗糙度Ra影响的基础上,结合Design-Expert软件,采用响应曲面法建立了描述输入变量与响应变量关系的二次模型,以确定表面粗糙度与切削条件的关系,确定了铣削参数的优化组合。结果表明:采用单刃螺旋铣刀铣削中密度纤维板时,其加工表面粗糙度Ra与进给速度和切削深度之间均呈正相关,即加工表面粗糙度Ra均随进给速度的增大和铣削深度的增大而增大;加工表面粗糙度Ra受铣削深度的影响最大,受进给速度的影响次之,而受两者之间相互作用的影响很小;优化组合后的进给速度和铣削深度分别为933.75 mm/min和0.86 mm,此时最小表面粗糙度Ra为7.70μm。Medium density fiberboard(MDF)is widely used in the wooden furniture industry,and helical tooth milling has the advantages of stable processing process and good surface quality.Compared with multi edges helical milling cutters,single edge helical milling cutters also have their own unique advantages in board processing.In practical production,single edge helical milling cutters are often used for cutting and milling MDF.Therefore,studying the cutting performance of single edge helical milling cutters in milling MDF has certain theoretical significance and practical va-lue.This study conducted milling experiments on MDF using a single edge helical milling cutter with a diameter of 6 mm.On the basis of investigating the influence of feeding rate and milling depth on the surface roughness Ra of milling MDF by line chart method,and by combining Design-Expert software,a quadratic regression model was established by the response surface methodology to describe the relationship between input variable(feeding rate and milling depth)and response variables(surface roughness Ra),in order to find out the relationship between surface roughness and cutting conditions,and determine the optimal combination of milling parameters.The experimental research results showed that the quadratic regression model established by the surface response methodology in this study had a high degree of fitting and could be used for predicting and optimizing the surface roughness Ra of milling MDF.When using a single edge helical milling cutter to mill MDF,the machined surface roughness Ra was positively correlated with the feeding rate and milling depth,that is,the machined surface roughness Ra increased with the increase of feeding rate and milling depth.The machined surface roughness Ra was mostly affected by milling depth,followed by feeding rate,and was slightly affected by the interaction between the two factors.The feeding rate and milling depth of the optimized combination were 933.75 mm/min and 0.86 mm,respectively,which resulting in a mi

关 键 词：单刃螺旋铣刀 中密度纤维板 表面粗糙度Ra 响应曲面法 优化 

分 类 号：TS653.6[轻工技术与工程]