Product Specification

Custom Deep Hole Drilling Tools Lengthening Carbide Gun Drill

Product Introduction

Key Features

Carbide Material

• The use of carbide in the construction of the gun drill offers numerous advantages. Carbide is extremely hard and wear-resistant, allowing it to withstand the abrasive forces encountered during the drilling of deep holes. It can effectively cut through tough materials such as hardened steels, stainless steels, and various alloys. The hardness of carbide also contributes to the drill's ability to maintain its cutting edge sharpness over a longer period compared to traditional drill materials. This results in fewer tool changes, reducing downtime and increasing productivity. Additionally, carbide has excellent heat dissipation properties. As deep hole drilling generates significant heat, the carbide material helps to dissipate it quickly, preventing overheating of the drill and the workpiece. This is crucial in maintaining the integrity of the cutting edge and ensuring accurate hole dimensions.
• The specific grade of carbide used is carefully selected based on the target material to be drilled, optimizing the drill's performance and durability.

Lengthening Design

• The lengthening feature of these gun drills is a key aspect. It enables the drilling of holes with greater depths than standard drills. This is essential in industries such as aerospace, automotive, and oil and gas, where components often require deep holes for various functions, such as cooling channels, fluid passages, or structural integrity. The lengthened design is engineered to maintain rigidity and stability during the drilling process. Special attention is given to the drill's shaft diameter and its relationship to the length to minimize deflection and vibration. The flute design is also optimized to ensure efficient chip evacuation even over the extended length. Longer flutes are designed to allow chips to be effectively removed from the hole, preventing chip clogging and subsequent tool damage.
• The lengthening is customizable to meet specific depth requirements of different applications, providing a tailored solution for each customer's needs.

Precision Engineering

• These gun drills are manufactured with a high level of precision. The cutting edge geometry is carefully designed to provide optimal cutting performance. The point angle and helix angle are precisely determined to ensure efficient material removal and smooth drilling. The drill's concentricity is maintained within extremely tight tolerances, which is crucial for achieving accurate hole diameters and straightness. The surface finish of the drill is also controlled to minimize friction and heat generation. A smooth surface helps the drill to glide through the material more easily, reducing the cutting force required and improving the overall drilling efficiency. The precision engineering of these drills results in high-quality holes with excellent surface finishes, reducing the need for secondary finishing operations.
• Advanced manufacturing techniques and quality control processes are employed to ensure that each drill meets the strictest standards of precision and performance.

Efficient Chip Evacuation

• Efficient chip evacuation is a vital feature of the lengthening carbide gun drill. It is equipped with a well-designed coolant system. A central coolant hole runs through the drill, allowing for the continuous supply of cutting fluid directly to the cutting zone. The coolant serves multiple purposes. It cools the drill and the workpiece, reducing the risk of thermal damage. It also lubricates the cutting edges, minimizing friction and improving chip evacuation. The high-pressure coolant helps to flush the chips out of the hole, preventing them from clogging the flutes and causing tool breakage. The flute geometry is optimized to work in conjunction with the coolant system. The flutes are shaped to guide the chips towards the coolant stream and out of the hole, ensuring a continuous and smooth drilling process.
• The combination of the coolant system and the flute design allows for efficient chip removal even in deep hole drilling applications, where chip evacuation can be a significant challenge.

Specification Details

• Application	nonferrous metals, Synthetic Materials & Graphite, Steel, iron, copper, aluminium, bronze, brass, plastic, aluminum alloy
  Drill Type	Carbide-tipped
  Shank Type	Whistle Notch
  Point Angle	142°, 118°, 144°, 135°, 140°, customized
  Surface Finish	High Temp/Hardness AlTiN, Multilayer TiCN/TiN, Bright(Uncoated), Diamond, Super Life TiAlN
  Customized support	OEM, ODM, OBM
  Product name	brazed gun drill
  Minimum dia	2mm
  Maximum dia	50mm
  Meterial	Carbide tip
  Size	As customers required
  Usage	Deep hole drilling
  Coating	Available
  Drill type	single-fluted gun drill
  OEM & ODM	Accpected
  Drill bar material	Steel

Application Scenarios

• In the aerospace industry, used for drilling deep holes in turbine engine components, such as discs and shafts, for cooling and fuel supply systems.
• The automotive industry utilizes these drills for manufacturing engine blocks and cylinder heads, creating deep holes for coolant passages and piston sleeves.
• In the oil and gas industry, they are essential for drilling holes in drill bits and downhole tools, as well as for creating deep holes in pipes and casings.
• Can also be applied in the manufacturing of heavy machinery, such as hydraulic cylinders and gearboxes, where deep holes are required for shafts and fluid channels.

Installation and Maintenance

• Installation: The gun drill is installed in a CNC machine or a dedicated deep hole drilling machine following the manufacturer's instructions. The shank is properly inserted into the spindle and secured using the appropriate clamping mechanism. The coolant supply system is connected to the drill's coolant hole, ensuring a proper flow of cutting fluid.
• Maintenance: Regular inspection of the drill is necessary. Check for signs of wear on the cutting edges, such as chipping or dulling. Inspect the coolant hole for any blockages and clean it if required. The drill should be stored in a clean and dry environment to prevent corrosion. Lubricate the shank and other moving parts as recommended by the manufacturer. If the drill shows significant wear or damage, it should be replaced or reconditioned to maintain optimal performance.

Conclusion