Prakash Chander, Pramanik Alokesh, Basak Animesh K, Dong Yu, Debnath Sujan, Shankar Subramaniam, Singh Sunpreet, Wu Linda Yongling, Zheng Hongyu Y
School of Mechanical Engineering, Shandong University of Technology, Zibo 255000, Shandong, China.
School of Mechanical Engineering, Lovely Professional University, Phagwara, Punjab 144411, India.
Materials (Basel). 2021 Mar 30;14(7):1699. doi: 10.3390/ma14071699.
In the present research work, an effort has been made to explore the potential of using the adhesive tapes while drilling CFRPs. The input parameters, such as drill bit diameter, point angle, Scotch tape layers, spindle speed, and feed rate have been studied in response to thrust force, torque, circularity, diameter error, surface roughness, and delamination occurring during drilling. It has been found that the increase in point angle increased the delamination, while increase in Scotch tape layers reduced delamination. The surface roughness decreased with the increase in drill diameter and point angle, while it increased with the speed, feed rate, and tape layer. The best low roughness was obtained at 6 mm diameter, 130° point angle, 0.11 mm/rev feed rate, and 2250 rpm speed at three layers of Scotch tape. The circularity error initially increased with drill bit diameter and point angle, but then decreased sharply with further increase in the drill bit diameter. Further, the circularity error has non-linear behavior with the speed, feed rate, and tape layer. Low circularity error has been obtained at 4 mm diameter, 118° point angle, 0.1 mm/rev feed rate, and 2500 RPM speed at three layers of Scotch tape. The low diameter error has been obtained at 6 mm diameter, 130° point angle, 0.12 mm/rev feed rate, and 2500 rpm speed at three layer Scotch tape. From the optical micro-graphs of drilled holes, it has been found that the point angle is one of the most effective process parameters that significantly affects the delamination mechanism, followed by Scotch tape layers as compared to other parameters such as drill bit diameter, spindle speed, and feed rate.
在当前的研究工作中，已努力探索在钻削碳纤维增强塑料（CFRPs）时使用胶带的潜力。针对钻削过程中出现的推力、扭矩、圆度、直径误差、表面粗糙度和分层等情况，研究了诸如钻头直径、顶角、胶带层数、主轴转速和进给速度等输入参数。结果发现，顶角增大时分层增加，而胶带层数增加时分层减少。表面粗糙度随钻头直径和顶角的增加而减小，而随转速、进给速度和胶带层数的增加而增大。在直径6mm、顶角130°、进给速度0.11mm/转、转速2250rpm且有三层胶带的情况下可获得最佳的低粗糙度。圆度误差最初随钻头直径和顶角增大，但随后随着钻头直径的进一步增大而急剧减小。此外，圆度误差与转速、进给速度和胶带层数呈非线性关系。在直径4mm、顶角118°、进给速度0.1mm/转、转速2500RPM且有三层胶带的情况下可获得低圆度误差。在直径6mm、顶角130°、进给速度0.12mm/转、转速2500rpm且有三层胶带的情况下可获得低直径误差。从钻孔的光学显微照片中发现，顶角是最有效的工艺参数之一，与钻头直径、主轴转速和进给速度等其他参数相比，它对分层机制有显著影响，其次是胶带层数。
