Product Specification

Custom Single-Fluted Gun Drill with Indexable Inserts and Supporting Strips

Product Introduction

Key Features

Single-Fluted Design

• The single-fluted design of this gun drill provides several key advantages. Firstly, it offers excellent chip evacuation capabilities. With only one flute, there is a larger space available for chips to travel along as they are removed from the hole. This is crucial in deep hole drilling, where chip clogging can lead to tool breakage and poor hole quality. The single flute also allows for a more efficient coolant flow. The coolant can be directed precisely to the cutting edge, providing effective cooling and lubrication. This helps to reduce heat generation and friction, further enhancing the drill's performance and prolonging its life. Additionally, the single-fluted design results in a more stable drilling process. It reduces the vibration and chatter that can occur with multi-fluted drills, leading to more accurate hole diameters and better surface finishes.
• The flute geometry is optimized to ensure a smooth and continuous chip flow, and it is carefully matched with the indexable inserts and supporting strips to achieve maximum drilling efficiency.

Indexable Inserts

• The indexable inserts are a core component of this drill's cutting performance. These inserts are made from high-quality carbide or other advanced cutting materials. They possess excellent hardness and wear resistance, allowing them to cut through a wide range of materials, including hardened steels, stainless steels, and various alloys. The indexable design offers significant benefits. When one insert becomes worn or damaged, it can be easily indexed or replaced without having to remove the entire drill from the machine. This reduces tool changeover time and increases productivity. Different inserts with varying geometries can be used depending on the application requirements. For example, a more aggressive cutting edge may be selected for rough drilling, while a finer edge can be used for finishing operations. This versatility makes the drill suitable for a wide range of drilling tasks, from initial hole creation to achieving precise final hole dimensions.
• The inserts are precisely engineered and manufactured to tight tolerances, ensuring consistent cutting performance and reliable hole quality.

Supporting Strips

• The supporting strips play a crucial role in enhancing the rigidity and stability of the drill. They are typically made from a strong and durable material, such as hardened steel or a high-strength alloy. The strips are strategically placed along the length of the drill to provide additional support, especially during the deep hole drilling process. They help to minimize deflection and vibration, which are common challenges in drilling deep holes. By reducing deflection, the drill can maintain a more accurate hole diameter and straightness. The supporting strips also contribute to the overall durability of the drill, allowing it to withstand the high axial forces and torsional stresses that occur during drilling. They work in conjunction with the single-fluted design and indexable inserts to create a highly efficient and reliable drilling tool.
• The design and attachment of the supporting strips are carefully engineered to ensure they do not interfere with the chip evacuation or coolant flow processes.

Customizability

• This gun drill offers a high degree of customization. The diameter of the drill can be adjusted to meet specific hole size requirements, typically ranging from a few millimeters to several centimeters. The length of the drill can also be customized, allowing for the drilling of deep holes with varying depths. Different flute geometries, indexable insert types, and supporting strip configurations are available to suit different materials and cutting conditions. For example, a more aggressive flute geometry may be used for softer materials, while a more refined geometry is suitable for harder and more brittle materials. The shank design of the drill can be tailored to fit different machine tool spindles, ensuring a proper and secure connection. This customization allows for the drill to be optimized for a wide range of applications, from small-scale precision machining to large industrial manufacturing processes.
• The ability to customize the drill based on specific needs makes it a versatile tool for various industries, including aerospace, automotive, machinery manufacturing, and more.

Durable and High-Quality Construction

• The overall construction of the drill is built to last. The body of the drill is made from a high-strength alloy steel that provides excellent rigidity and support for the indexable inserts and supporting strips. The surface finish of the drill is carefully controlled to minimize friction and heat generation. A smooth surface helps to improve chip evacuation and reduces the risk of tool wear and workpiece damage. The drill is manufactured to strict quality control standards, ensuring that each unit meets the highest levels of performance and reliability. The combination of the single-fluted design, indexable inserts, supporting strips, and durable construction results in a drill that can withstand the rigors of continuous deep hole drilling operations and maintain its accuracy and efficiency over time.
• The reliable construction of the drill also reduces the need for frequent tool replacements, saving both time and costs in the manufacturing process.

Specification Details

• Application	nonferrous metals, Synthetic Materials & Graphite, Steel, iron, copper, aluminium, bronze, brass, plastic, aluminum alloy
  Drill Type	Carbide tip with indexable inserts
  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	30mm
  Maximum dia	65mm
  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 channels and fuel supply systems.
• The automotive industry benefits from these drills in manufacturing engine blocks and cylinder heads, creating deep holes for coolant passages and piston sleeves.
• In the machinery manufacturing sector, ideal for drilling deep holes in spindles, gears, and housings, where precise hole geometries are needed for proper assembly and function.
• Can also be applied in the manufacturing of firearms and other defense-related equipment, where deep hole drilling is required for barrels and other components.

Installation and Maintenance

• Installation: The 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 indexable inserts, 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