Uドリル
A U drill is a type of drilling tool specifically designed for creating large-diameter holes in machining operations with high efficiency and accuracy. Unlike standard twist drills, U drills are characterized by their ability to remove chips more efficiently and to provide coolant directly to the cutting edge, which significantly improves the drilling process in terms of speed and quality.
The U drill is typically composed of a cylindrical body with one or more removable carbide inserts that serve as the cutting edges. These inserts can be easily replaced when they become worn out, which makes U drills a cost-effective option for extensive drilling operations. The design of the U drill allows for a straighter and more precise hole, as it tends to produce less wandering compared to traditional drills.
Why choose us u drilling inserts?
High productivity with outstanding insert geometries and grades
Brand new material, reject recycled raw materials. Plenty of grooves for heavy machining, semi-finishing and finishing.
High precision and good tolerances
Sharp edge lines and burr-free, smooth profiles, which also efficiently reduces the need for a semi finishing operation.
Edge Strength
Grinding after die casting, followed by passivation and finally coating
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Key features of U drill
- Replaceable Inserts: The use of carbide or other hard material inserts for the cutting edges enhances the tool’s durability and performance in cutting through hard materials.
- Coolant Channels: U drills often feature internal channels that allow coolant to be delivered directly to the cutting edges and the drilling surface. This cooling significantly reduces heat buildup, prevents tool wear, and improves chip evacuation.
- High Efficiency: Due to their design and the use of replaceable inserts, U drills can operate at higher speeds and feeds than conventional drills, resulting in faster drilling operations.
- Versatility: U drills can be used on a variety of materials, including metals, plastics, and composites, making them versatile tools in both CNC (Computer Numerical Control) machining centers and conventional machining setups.
See clearly what u drill is
The use of U-drill requires high rigidity of the machine tool and neutralisation of the tool and the workpiece, so U-drill is suitable for use on high power, high rigidity and high speed CNC machine tools.
![cnc u drill](https://onmytoolings.com/wp-content/uploads/2023/07/245d39e9-5aaf-4839-97b6-7c87dc37927e-768x1024.png)
How do U drills improve chip evacuation compared to standard twist drills?
U drills improve chip evacuation substantially over standard twist drills through several key design features that optimize the removal of chips from the cutting zone, thus enhancing drilling efficiency and reducing the risk of chip clogging and heat buildup. These design features include:
- Coolant Delivery: One of the most significant advantages of U drills is the direct delivery of coolant to the cutting edges through internal channels within the drill body. This coolant flushes chips away from the cutting zone more effectively than the external coolant application used with standard twist drills. Keeping the cutting area clear of chips not only improves the drilling process but also extends the tool life by reducing thermal stress on the cutting edges.
- Chip Flutes: While standard twist drills have spiral flutes that evacuate chips along their length, the design of U drills often incorporates wider, more open flutes that provide a larger space for chips to exit the hole being drilled. This design reduces the likelihood of chips becoming compacted and stuck in the flutes, a common issue with smaller, tighter flutes of twist drills.
- Insert Geometry: The cutting inserts used in U drills can be designed with specific geometries that enhance chip breakage and control. By breaking chips into smaller, more manageable pieces, the evacuation process becomes more efficient. This tailored insert geometry helps in managing the chip flow and reduces the chances of chip re-cutting, which can adversely affect hole quality and tool life.
- High Feed Rates: The structure and stability of U drills allow them to operate at higher feed rates compared to standard twist drills. Higher feed rates produce thicker chips, which can be easier to manage and evacuate from the cutting zone.
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