Kunshan Meiyaxing Hardware Machinery Co., Ltd., a direct branch of Hong Kong Meiya International Trading Co., Ltd., is a professional wholesaler of CNC cutting tools. We are committed to providing customers with high-quality CNC cutting tool products and professional services to meet their production and processing needs across various industries. Our company has established long-term strategic partnerships with well-known domestic manufacturers, possessing excellent procurement channels and a comprehensive product line with diverse tool specifications. We offer a full range of CNC cutting tools to meet various production and processing requirements. Furthermore, we will continuously launch new products to meet the diverse needs of our customers. Our service team possesses professional technical expertise and excellent after-sales service, providing customers with comprehensive services including technical support, installation, commissioning, and maintenance to ensure a smooth user experience. A perfect experience. We also customize tooling solutions based on specific customer needs, ensuring every customer receives the best service and experience. In our future development, we will continue to uphold the business philosophy of "quality first, service foremost," continuously improving service levels and product quality to create more value for our customers and help them achieve better development. In industrial manufacturing, construction, and even DIY crafts, drill bits are ubiquitous tools. But it is precisely this "commonness" that causes many to overlook their technical complexity. Have you ever encountered situations where drill bits wear out quickly, the hole walls become rough, or even break on the spot? Often, the problem isn't with the equipment or the operator, but rather with a mismatch between the selected drill bit and the timing of its use.
This article will help you clarify the logic of drill bit selection and the optimal time to use them from a practical perspective.
I. Before choosing a drill bit, understand three core dimensions.
Before selecting a drill bit, you must clarify three factors: workpiece material, drilling depth, and accuracy requirements. These three dimensions directly determine which type of drill bit you should choose.
Dimension | Key Issues | Impact
Workpiece Material | Is it steel, aluminum, wood, or carbon fiber? | Determines drill bit material and coating
Drilling Depth | Is the hole depth within 3 times the diameter, or more than 5 times? | Determines drill bit rigidity and chip removal structure
Accuracy Requirements | Is the tolerance H7 grade, or only for bolts? | Determines whether reaming or special cutting edge types are needed
II. Choosing by "Material": High-speed steel, cemented carbide, or diamond?
This is the first step in selection, and also the most prone to errors.
· High-speed steel drill bits: The most versatile and economical. Suitable for common steel, aluminum alloys, wood, and plastics. Advantages include good toughness and resistance to breakage, making them suitable for hand tools or older machine tools with poor rigidity. However, their heat resistance is limited, and they are prone to annealing and softening during high-speed cutting. Recommended for: drilling a small number of holes, materials with a hardness below HRC30, or when using a hand drill.
• Carbide drill bits: High hardness and good heat resistance (up to 800-1000℃), suitable for high-speed cutting. Suitable for difficult-to-machine materials such as stainless steel, cast iron, and hardened steel (HRC40-60). Recommended for: mass production, automated machining, or materials with high hardness. Note: They are brittle, requiring high machine tool rigidity and clamping precision; unsuitable for hand drills.
• Polycrystalline diamond drill bits: Superhard material, primarily for non-ferrous metals and composite materials, such as high-silicon aluminum alloys, carbon fiber, and graphite. Recommended for: lightweight material machining in the aerospace or automotive industries, where extremely high surface quality and tool life are required.
• Woodworking drill bits: such as three-point drills and flat drills. Their design logic is "split" rather than "cut," featuring a centering tip and edge cutting wings. When to use: Woodworking holes, especially in solid wood or engineered wood, effectively reducing burrs at the exit.
If you have any questions about MANF brand tools, please call us for consultation or negotiation"
Contact us:Company name:Kunshan Meiyaxing Hardware Machinery Co., Ltd;Tel:8618962438699;Address: Room 3003, Building 3, Zhengtailong, No. 1288 Chengbei Middle Road, Kunshan City, Jiangsu Province, China;Email:myxcuttingtools@gmail.com;Website: https://www.myxcuttingtools.com
