Drill cum reamers are multifunctional cutting tools designed to perform both drilling and reaming operations in a single pass, improving machining efficiency and accuracy. These tools first drill an undersized hole and then ream it to achieve the desired final diameter with a smooth surface finish and precise tolerance. They are commonly used in industries such as aerospace, automotive, and precision manufacturing, where high accuracy and productivity are essential. Made from high-speed steel (HSS), carbide, or cobalt, drill cum reamers offer durability, wear resistance, and extended tool life. They are available in various designs, including straight flute, spiral flute, and coolant-through options for enhanced chip evacuation and reduced heat buildup. Their ability to combine two operations into one reduces cycle time, minimizes tool changes, and enhances alignment accuracy, making them ideal for high-production environments. Proper selection of cutting parameters, lubrication, and alignment ensures optimal performance, prolongs tool life, and improves hole quality in machining applications.
