Straight Hole Carbide Rod

Straight hole carbide rods have one or two straight holes in the middle. Coolant holes are most commonly used. The friction between the tool and the workpiece generates a lot of cutting heat during the metal cutting process, causing the temperature of the workpiece and the tool to rise sharply, causing the cutting edge of the tool to deform and affect the cutting effect, so it is necessary to cool the cutting working area to achieve the cooling effect.
The traditional cooling treatment is external cooling, which involves spraying the coolant stored in the machine tool onto the workpiece via the coolant nozzle set on the machine tool. The cooling effect of this method is insignificant, and the position of the coolant nozzle need to be adjusted.
This adjustment is frequently required during machining due to coolant splashes contacting the rotating workpiece. The splashed milky white coolant will wet the surrounding area and blur the observation mirror on the machine tool's protective cover, preventing the operator from observing the processing situation and determining the precise processing progress and whether the processing is normal, affecting cooling accuracy further. The coolant nozzle cannot be placed in the hole to cool it when machining the inner hole or inner thread hole. It can only spray liquid from the outside to the inside, and the cutter's feeding distance in the hole is long.
As a result of the interference between the coolant nozzle and the workpiece, it is necessary to prevent the coolant nozzle from separating from the preset spraying position. As a result, it can only increase the spraying intensity to allow more coolant to enter the hole, resulting in coolant splashing, coolant waste, and a machine that is difficult to clean. As a result, the internal cooling cutting tool is used to improve cooling efficiency and effect, as well as to solve cooling problems in complex situations where external cooling is ineffective. Straight hole carbide rod is the raw material used to make many internal cooling tools, such as internal cooling milling cutters and drills.