刀具前角和切削深度对木塑复合材料切削性能的影响  

Effects of Rake Angle and Cutting Depth on Cutting Performance of Wood-Plastic Composites

作　　者：朱梦男 田广军 胡勇 伍占文 郭晓磊 ZHU Meng-nan;TIAN Guang-jun;HU Yong;WU Zhan-wen;GUO Xiao-lei(Collage of Materials Science and Engineering,Nanjing Forestry University,Nanjing 210037,Jiangsu,China;Bosun Prewi(Shanghai)Tool System Co.,Ltd.,Shanghai 201300,China)

机构地区：[1]南京林业大学材料科学与工程学院,江苏南京210037 [2]博深普锐高(上海)工具有限公司,上海201300

出　　处：《木材科学与技术》2022年第5期78-82,共5页Chinese Journal of Wood Science and Technology

基　　金：国家自然科学基金项目“基于热力耦合的WPC高速铣削积屑瘤形成机理及其切削表面损伤控制的研究”(31971594)。

摘　　要：采用硬质合金刀具切削2种木塑复合材料(聚乙烯与木粉的质量比,试材A为6∶4,试材B为3∶7),研究刀具前角(2°、6°和10°)和切削深度(0.5、1.0和1.5 mm)对试材切削力、切削温度和表面粗糙度的影响。结果表明:随着刀具前角从2°增大到10°,试材A的切削力、切削温度以及表面粗糙度,在精加工时(切削深度为0.5 mm)分别降低了约41%、12%和17%;在粗加工时(切削深度为1.5 mm)分别降低了约28%、21%和13%;随着切削深度从0.5 mm增加到1.5 mm(刀具前角为2°时),试材A的切削力、切削温度以及表面粗糙度分别提高了约55%、17%和26%;试材B的变化趋势与试材A一致。实际生产时,建议在粗加工过程中,适当增大切削深度,来提高生产效率;但在精加工过程中,建议增大刀具前角并选取较小的切削深度,以此来提高木塑复合材料的表面加工质量。Two different ratios of wood-plastic composite(WPC) were cut with cemented carbide tools.The ratio of polyethylene and wood powder was at 6∶4 for the material A while 3∶7 for the material B respectively. The effects of tool rake angles(2°, 6°, and 10°) and cutting depth(0.5, 1.0, and 1.5 mm) on WPC cutting force, cutting temperature, and surface roughness were investigated. The results showed that with the rake angle of the tool increased from 2° to 10°, the cutting force, cutting temperature, and surface roughness of material A were reduced respectively by about 41%, 12%, and 17% during finishing process with a cutting depth of 0.5 mm while decreased respectively by about 28%, 21%, and 13% during roughing process with a cutting depth of 1.5 mm. With the cutting depth increased from 0.5 mm to 1.5mm when the tool rake angle was 2°, the cutting force, cutting temperature, and surface roughness of material A increased by about 55%, 17%, and 26% respectively. The cutting performance of material B was consistent with that of material A. In actual production, it was recommended to increase the cutting depth appropriately in the roughing process to improve production efficiency. However, in the finishing process, it was recommended to increase the rake angle of the tool and select a smaller cutting depth to improve the surface machining quality of WPC.

关 键 词：木塑复合材料 刀具前角 切削深度 切削力 表面粗糙度 

分 类 号：TS62[轻工技术与工程] TS653.92