The reasons for the rapid wear of graphite board drilling tools can be summarized as follows:
1.Mismatched Hardness: Graphite boards have relatively low hardness, while some conventional drilling tools may be designed for harder materials, leading to excessive force during machining of graphite boards, accelerating tool wear.
2.Graphite Dust: Drilling graphite boards generates a large amount of graphite dust, which creates friction between the tool and the workpiece, accelerating tool wear.
3.High Temperature Effects: During drilling of graphite boards, the friction between the high-speed rotating tool and the graphite generates high temperatures, which may cause failure or softening of the tool coating, thereby accelerating wear.
4.Inappropriate Cutting Speed and Feed Rate: If the cutting speed is too fast or the feed rate is too high, it increases the contact time between the tool and the workpiece, increasing the opportunity for wear.
5.Inadequate Cooling: Sufficient coolant should be provided during the drilling process to reduce the temperature of the tool and workpiece, minimizing wear. Inadequate cooling accelerates tool wear.
To reduce wear of graphite board drilling tools, measures such as selecting tools specifically designed for graphite machining, controlling cutting speed and feed rate, promptly removing graphite dust, and providing adequate coolant should be taken.