摘要
木塑复合材料(WPC)是一种具有良好力学性能且环保的材料。以试验为基础,研究铣削过程中主轴转速和铣削刀具前角对木塑复合材料切削力和表面粗糙度的影响。采用单齿硬质合金铣刀对木塑复合材料进行铣削加工试验,主轴转速(8 000,9 000,10 000和11 000 r/min)和刀具前角(2°,6°和10°)为变量,平均切削厚度为定值,采集切削过程中的切削力值和加工后的表面粗糙度值,对其影响进行分析。切削合力随着主轴转速的增加而降低,表面粗糙度随着主轴转速的增加而增大;切削合力与表面粗糙度均随着刀具前角的增加而减小。刀具前角6°、主轴转速为8 000~11 000 r/min时,切削分力F_(x)、F_(y)以及切削合力F_(r)均随着转速升高而降低,表面粗糙度随转速增加而增加;从单因素分析可知,在显著性水平0.05下,主轴转速对切削合力影响显著,对表面粗糙度影响并不显著,建立切削合力与主轴转速回归方程:F_(r)=95.983-0.005n。在实际生产中,可以通过提高转速和刀具前角,来保证加工质量和提高加工效率。
Wood plastic composite(WPC) is a kind of green material which is made of wood powder and plastic with a certain proportion.It has good mechanical properties.In recent years,wood plastic composites have been improved in flame retardancy,corrosion resistance,waterproof and aging resistance,further increasing its market value.Wood plastic composites need to be processed before use.The selection of cutting parameters has an important effect on machining.In this study,based on experiments,the effects of spindle speed and rake angle of milling tool on cutting forces and surface roughness of wood plastic composite were investigated.The single tooth carbide cutting tools were used to mill wood plastic composites.The spindle speed(8 000,9 000,10 000 or 11 000 r/min) and tool rake angle(2°,6° or 10°) were taken as variables,and the average cutting thickness is a fixed value.The cutting force value and the surface roughness value after machining were collected and analyzed.When the rake angle of the tool was 6°,the measured cutting force and surface roughness were analyzed by a single factor method.Within the range of milling parameters selected in this study.The resultant force decreased with the increase of rotational speed,and the surface roughness increased with the increase of rotational speed.The resultant force and surface roughness decreased with the increase of tool rake angle.When the tool rake angle was 6° and the spindle speed was 8 000-11 000 r/min,the cutting component forces F_(x) and F_(y) and the resultant force F_(r) decreased with the increase of the spindle speed,and the surface roughness increased with the increase of the spindle speed.The single factor analysis showed that at the significance level of 0.05,the influence of spindle speed on cutting force was significant,but the influence on surface roughness was not significant.The regression equation of the relationship between the resultant force and the spindle speed was F_(r)=95.983-0.005n.With the increase of the spindle speed,the cutting forc
作者
蒋荣升
郭晓磊
曹平祥
JIANG Rongsheng;GUO Xiaolei;CAO Pingxiang(College of Materials Science and Engineering,Nanjing Forestry University,Nanjing 210037,China)
出处
《林业工程学报》
CSCD
北大核心
2022年第3期144-149,共6页
Journal of Forestry Engineering
基金
国家自然科学基金(31971594)。
