Author: Site Editor Publish Time: 2025-08-22 Origin: Site
Higher Cooling Efficiency: The cutting fluid acts directly on the core of the heat source (the cutting edge), with a heat dissipation effect that is over 50% better than external cooling. This effectively prevents tool wear and softening due to high temperatures.
Better Lubrication Effect: Precise lubrication reduces friction between the cutting edge and the workpiece, extending tool life (usually by 30%-100%) while reducing the surface roughness of the workpiece.
Smoother Chip Evacuation:The high-pressure cutting fluid, combined with the flute design, can quickly expel chips from the hole. This is especially suitable for deep hole machining (e.g., when the hole depth exceeds 5 times the diameter), reducing problems such as tool jamming and hole wall scratches caused by poor chip evacuation.
Wider Application Range: It can be used for drilling difficult-to-machine materials such as high-strength steel, stainless steel, and titanium alloys, and can also meet the requirements of high-speed, high-precision drilling (e.g., in the machining of automobile engine blocks and aerospace parts).
Deep Hole Machining: Such as deep holes in molds and hydraulic valve blocks (with a depth-to-diameter ratio ＞5), which rely on the internal cooling system for chip evacuation and temperature reduction.
Difficult-to-Machine Materials: When machining stainless steel, high-temperature alloys, high-strength steel, etc., high temperatures easily cause tool wear, and internal cooling can effectively alleviate this problem.
High-Speed Drilling: When used on high-speed machine tools (rotational speed ＞3000rpm), internal cooling can prevent damage to tools or workpieces due to a sudden increase in frictional heat.
Precision Part Machining: Such as aerospace parts and medical devices, which require strict control of surface quality and dimensional accuracy. Internal cooling can reduce machining errors.
Cutting Fluid Pressure: Internal coolant drill bits need to be matched with a high-pressure cutting fluid system (usually with a pressure ≥5MPa). Low pressure may result in poor cooling and chip evacuation effects.
Channel Cleaning:The internal channels need to be cleaned regularly after long-term use to avoid blockage of the outlets by impurities in the cutting fluid, which affects performance.
Matching Machine Tools: It is necessary to ensure that the machine tool has an internal cooling cutting fluid supply function; otherwise, the advantages of the internal coolant drill bit cannot be realized.
