单 位：
南京林业大学材料科学与工程学院;博深普锐高(上海)工具有限公司
关键词：
木塑复合材料;铣削参数;机床功率;机床有效加工能效;机床能量利用率
摘 要：
木塑复合材料(WPC)是一种可回收的环保绿色材料,凭借优越的力学性能,WPC的使用率和市场份额都在逐渐增加。为提高WPC铣削时的机床能量利用率,降低生产能耗,以PVC/钙粉/木纤维复合材料铣削时的机床功率为研究对象,对铣削时的主轴转速(6 000,8 000,10 000 r/min)、铣削深度(0.5,1.0,1.5 mm)、刀具前角(2°,6°,10°)和后刀面磨损(0.1,0.2,0.3 mm)对机床主轴总功率、空载功率、铣削功率和机床有效加工能效的影响规律进行分析。结果表明:在本研究所选铣削参数范围内,保持固定进给速度,空载功率只受主轴转速影响;机床主轴总功率和铣削功率随主轴转速、铣削深度、后刀面磨损增大而增大,随刀具前角增大而减小;机床有效加工能效随主轴转速、刀具前角增大而降低,随铣削深度增大而提高;铣削深度对机床有效加工能效的影响最大,刀具前角次之,主轴转速影响最小。在保证加工质量前提下,WPC铣削加工时选择较大铣削深度、较高主轴转速和较大刀具前角能明显提高机床有效加工能效,达到提高机床能量利用率、降低生产能耗的目的。
译 名：
Machine energy utilization rate during milling of PVC/calcium powder/wood fiber composites
作 者：
DONG Weihang;HU Yong;TIAN Guangjun;QIU Xuehai;GUO Xiaolei;College of Materials Science and Engineering,Nanjing Forestry University;Bosun Prewi (Shanghai) Tool System Co.Ltd.;
关键词：
wood-plastic composite(WPC);;milling parameter;;motor power;;effective machining energy efficiency of machine tool;;machine energy utilization rate
摘 要：
Since wood-plastic composite(WPC) is a recyclable and environmentally friendly green material,with its superior mechanical properties,the utilization and market share of WPC have been gradually increased. The effective machining energy efficiency of machine tool directly reflects the energy utilization rate,and the higher the effective machining energy efficiency of machine tool means the higher the energy utilization rate of the machine in the milling process. In order to improve the machine energy efficiency and reduce the production energy consumption during the WPC milling,the machine power during PVC/calcium powder/wood fiber composite milling was studied. The spindle speed(6 000,8 000 or 10 000 r/min),milling depth(0.5,1.0 or 1.5 mm),rake angle(2°,6° or 10°) and flank wear(0.1,0.2 or 0.3 mm) during the milling of WPC that influence the total machine spindle power,idle pow-er,milling power and effective machining energy efficiency of machine tool were analyzed. A series of cutting experiments were carried out on the Computer Numerical Control with a fixed feeding speed of 5 m/min,and the milling cutter was a single-toothed shank cutter,which was made of cemented carbide. The power signal was acquired by the machine control cabinet with a three-phase power analyzer. The signal of machine power was repeated three times for each cutting test,and then the average value was adopted for further investigation. At the same time,the orthogonal analysis was carried out to obtain the optimal milling parameters with the highest effective machining energy efficiency of the machine tool as the optimization objective. The results showed that,within the range of milling parameters selected in this study,the idle power was only affected by the spindle speed. Meanwhile,the total power and cutting power increased with the increase of spindle speed,milling depth and flank wear,but decreased with the increase of rake angle. Furthermore,the effective machining energy efficiency of machine tool decreased with the increase of spindle speed and rake angle,and increased with the increase of milling depth. The effect of milling depth on effective machining energy efficiency of machine tool was the largest,followed by the rake angle and the spindle speed. Therefore,during the machining of WPC,under the premise of cutting quality,the cutting condition with larger rake angle,higher spindle speed and greater milling depth was recommended,which could improve the effective machining energy efficiency of machine tool,increase the machine energy utilization rate and reduce the energy consumption during the production.
