CFRP(Carbon fiber reinforced plastics) is used in various industrial fields such as aerospace, automobile, medical device and architecture. It is lighter than other metals, but its strength, hardness and abrasion is quiet superior. One of the most common use of CFRP is in the field of aerospace indu...
CFRP(Carbon fiber reinforced plastics) is used in various industrial fields such as aerospace, automobile, medical device and architecture. It is lighter than other metals, but its strength, hardness and abrasion is quiet superior. One of the most common use of CFRP is in the field of aerospace industry. As the industry requires light but strong material as it is basically about flying, CFRP is the appropriate carbon fire for it.
For more diverse and effective use of CFRP, one must be well aware of cutting and drilling process. Thus, studies regarding the optimal cutting and drilling process are very important. In aerospace industry, drilling holes on CFRP component is an unevitable part of assembly. Damage from drilling occurs frequently, and it influences the quality reliability. Despite the outstanding features of CFRP, due to excessive abrasion of tool, tear on each fly interface or lay down of fiber can cause defects such as surface deterioration of each fly. Therefore, studies regarding the condition of high-precision product minimizing such problems are very important. This study used CFRP plate laminated by [0°/90°], and point angle 118° carbide drill (hereafter carbide drill) with variation of tool shape, point angle 90° carbide drill (hereafter shape drill I), point angle 90° & taper 15° carbide drill (hereafter shape drill II) to conduct drilling experiment. The study conducted experiments in various drilling conditions such as 1000, 1800, 2500rpm spindle speed and 140, 200, 250mm/min transmission speed and set the optimized condition to each tool. In the experiment, the study analyzed the cutting and tool abrasion, and observed the burr condition of entrance and exit surface of CFRP plate.
As for the shape drill II, the faster the spindle speed is, the lower the cutting and torque was regardless of transmission speed, and it held the highest cutting force when compared with 3 tools. As for the tool abrasion, it showed the minimal abrasion compared to other 2 tools, but was poorest at the entrance&exit of CFRP plate. To analyze the influence on taper angle, the study conducted extra experiment with 2 types of taper drill(30° and 45°), but the result confirmed entrance&exit hole with better condition. This indicates the variation in taper angle has no significance influence on machinability.
CFRP(Carbon fiber reinforced plastics) is used in various industrial fields such as aerospace, automobile, medical device and architecture. It is lighter than other metals, but its strength, hardness and abrasion is quiet superior. One of the most common use of CFRP is in the field of aerospace industry. As the industry requires light but strong material as it is basically about flying, CFRP is the appropriate carbon fire for it.
For more diverse and effective use of CFRP, one must be well aware of cutting and drilling process. Thus, studies regarding the optimal cutting and drilling process are very important. In aerospace industry, drilling holes on CFRP component is an unevitable part of assembly. Damage from drilling occurs frequently, and it influences the quality reliability. Despite the outstanding features of CFRP, due to excessive abrasion of tool, tear on each fly interface or lay down of fiber can cause defects such as surface deterioration of each fly. Therefore, studies regarding the condition of high-precision product minimizing such problems are very important. This study used CFRP plate laminated by [0°/90°], and point angle 118° carbide drill (hereafter carbide drill) with variation of tool shape, point angle 90° carbide drill (hereafter shape drill I), point angle 90° & taper 15° carbide drill (hereafter shape drill II) to conduct drilling experiment. The study conducted experiments in various drilling conditions such as 1000, 1800, 2500rpm spindle speed and 140, 200, 250mm/min transmission speed and set the optimized condition to each tool. In the experiment, the study analyzed the cutting and tool abrasion, and observed the burr condition of entrance and exit surface of CFRP plate.
As for the shape drill II, the faster the spindle speed is, the lower the cutting and torque was regardless of transmission speed, and it held the highest cutting force when compared with 3 tools. As for the tool abrasion, it showed the minimal abrasion compared to other 2 tools, but was poorest at the entrance&exit of CFRP plate. To analyze the influence on taper angle, the study conducted extra experiment with 2 types of taper drill(30° and 45°), but the result confirmed entrance&exit hole with better condition. This indicates the variation in taper angle has no significance influence on machinability.
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#CFRP drill Tool Shape
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