Precision Hole-Making Solutions for Modern Machining

Precision Hole-Making Solutions for Modern Machining

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The JJ Carbide Drill Series is engineered to meet the evolving demands of precision machining. Leveraging nanotechnology coatings and advanced design, these drills offer low friction, superior chip evacuation, and enhanced resistance to thermal wear. This results in extended tool life and consistent high performance, making them a reliable choice for drilling in titanium alloys, stainless steel, general steel, and aluminum alloys, with processing hardness up to HRC55°.

Product Line Overview

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Carbide Drill Straight Shank ( 3xH ) - 2 Flutes Carbide High Speed Drill ( 3xH ) - 2 Flutes Carbide High Speed Drill ( 5xH ) - 2 Flutes Carbide High Speed Drill With Coolant Hole ( Stainless / 3xH ) - 2 Flutes Carbide High Speed Drill With Coolant Hole ( Stainless / 5xH ) - 2 Flutes Carbide High Speed Drill With Coolant Hole ( Stainless / 7xH ) - 2 Flutes Carbide Flat High Speed Drill ( Aluminum ) - 2 Flutes Micro Grain Carbide Flat Drill With Reamer Fuction ( Stainless / Steel ) - 2 Flutes Micro Grain Carbide Flat Drill - (With Collant Holes and Reamer Function) (Stainless / Steel / 3xH) - 2 Flutes Micro Grain Carbide Flat Drill - (With Collant Holes and Reamer Function) (Stainless / Steel / 5xH) - 2 Flutes Micro Grain Carbide Flat Drill - (With Collant Holes and Reamer Function) (Stainless / Steel / 7xH) - 2 Flutes Micro Grain Carbide Flat Drill - (With Collant Holes and Reamer Function) (Stainless / Steel / Inch) - 2 Flutes

Redefining Precision: The JJF Series Multi-Function Carbide Drill-Reamer

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In modern machining, the requirements for hole-making have become increasingly stringent. Beyond simply creating a hole, today’s standards demand precise diameters, excellent wall finishes, and reliable perpendicularity, all while maintaining efficiency and stability. Traditional workflows often require multiple tools and setups, increasing both time and the risk of error.

Jin Li Cheng (JLC), with over 25 years of expertise in cutting tool R&D and manufacturing, addresses these challenges with the JJF Series Tungsten Carbide Drill-Reamer & Flat Bottom Drill. This multi-patent, integrated solution is designed to streamline operations, reduce tool changes, and deliver high-precision results in a single step.

Patented Design for Enhanced Accuracy and Efficiency

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The JJF Series stands out due to its innovative geometry, recognized by multiple international patents (e.g., R.O.C. Patent No. M631172). Key features include:

• Unique Point Geometry: Ensures accurate positioning and stability from the start, minimizing deflection and chatter.
• Dual-Margin Structure: Functions as guide rails, burnishing and polishing the hole wall during drilling for improved roundness and surface finish.
• Superior Chipping Resistance: Optimized edge preparation enhances durability, maintaining precision even in long production runs.

This design enables the JJF Series to achieve a drill-reaming tolerance within 0.01mm, often eliminating the need for a separate reaming operation and significantly improving both efficiency and consistency.

Versatile Applications

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The JJF Series is engineered for a wide range of challenging scenarios:

• Inclined and Curved Surface Drilling: The 180° flat-bottom design ensures stable entry and precise positioning, even on angled or curved surfaces.
• Flat-Bottom Hole Machining: Produces clean, sharp, flat-bottom holes in a single pass, ideal for counterbores.
• Thin Plate & Blind Tapped Holes: Offers precise depth control, maximizing thread length without breakthrough.
• Intersecting Holes & Off-Center Correction: Maintains accuracy and prevents deflection, even in complex geometries.

Materials and Manufacturing Excellence

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JLC’s commitment to quality is evident in every aspect of the JJF Series:

• Premium European Micro-Grain Carbide Rods: Provide stability, hardness, and toughness for high-rigidity cutting edges.
• Specialized Flute Design & Mirror Finish: Optimized for efficient chip evacuation and reduced friction, especially beneficial for materials like stainless steel.
• Proprietary Coating & Through-Coolant Design: European anti-adhesion composite coating extends tool life, while through-coolant channels (JJFW Series) enable effective cooling and chip removal in deep-hole or high-efficiency applications.

JLC’s Core Strengths

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Frequently Asked Questions (FAQ)

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1. Can the JJF series replace a traditional reamer? Yes, for many applications. The patented design achieves a drill-reaming tolerance within 0.01mm, meeting most precision requirements. This is ensured by premium materials, precise CNC grinding, and strict quality inspection.

2. How is chip evacuation in high-adhesion materials like stainless steel? Excellent. The flute geometry and mirror finish, combined with anti-adhesion coating, ensure smooth chip breaking and evacuation, minimizing chip welding.

3. When should I choose the standard (JJF) vs. through-coolant (JJFW) version? Use the standard JJF for shallow drilling (up to 3xD) and the JJFW through-coolant model for deep-hole or high-efficiency drilling, especially in steel or stainless steel.

4. Can the JJF flat-bottom drill be used for milling? No. The JJF is designed for axial drilling forces only and is not suitable for milling or side-cutting operations.

5. Are imperial sizes or custom services available? Yes. Both metric (Ø1.0mm to Ø20.0mm) and common imperial sizes (e.g., 1/8", 1/4") are offered, along with customization for special requirements.

6. What is the patent number for this drill? R.O.C. (Taiwan) patent number M631172, signifying unique, legally protected geometry and JLC’s R&D capabilities.

Contact and Further Information

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For more details or to discuss your specific requirements, contact our technical team. Discover how JLC’s innovative solutions can enhance your precision machining operations.