Sumitomo Cnmg 120408 Ac6040M

What is the Sumitomo CNMG 120408 AC6040M Insert?

The CNMG 120408 AC6040M insert is part of Sumitomo's series of indexable carbide inserts, designed specifically for turning operations. The part number breakdown is as follows:

• CNMG: Refers to the insert shape. "C" stands for a triangular shape with negative rake angle (ideal for roughing), "N" stands for a positive rake angle for improved cutting performance, "M" is for multi-functional inserts, suitable for both roughing and finishing operations. The G indicates the flat-bottom design for added stability during machining.
• 120408: Refers to the size of the insert. "12" denotes the length and width, which is 12mm, and "08" represents the thickness, which is 0.8mm.
• AC6040M: This is the grade and coating of the insert. The AC6040M grade is optimized for general-purpose turning operations, with a coating designed for high wear resistance and heat resistance, making it suitable for steel and cast iron applications.

Key Features of the Sumitomo CNMG 120408 AC6040M Insert

1. Material Composition:

   • The CNMG 120408 AC6040M insert is made from high-quality carbide, a material known for its superior hardness and wear resistance. This allows the insert to perform well at high cutting speeds and temperatures, making it ideal for tough machining tasks.
   • AC6040M is a specialized grade with an advanced coating that enhances the insert's wear resistance, heat resistance, and cutting edge strength. This coating helps reduce friction, preventing premature wear and increasing tool life.

2. Geometry and Design:

   • Triangular Shape (CNMG): The CNMG insert geometry is widely used in turning operations due to its ability to handle high cutting forces and provide stability during machining. The triangular shape with a positive rake ensures smooth cutting action and lower cutting forces.
   • Negative Rake Angle: The negative rake angle of the C geometry makes it suitable for roughing applications, where higher cutting forces are involved. The geometry helps maintain tool strength while achieving good material removal rates.
   • Flat-Bottom Design: The flat-bottom design enhances the insert's stability during machining, ensuring consistent cutting performance and minimizing tool deflection.

3. Coating Technology:

   • The AC6040M grade features a multi-layer coating designed to provide superior wear resistance and heat resistance. This coating allows the insert to withstand high cutting temperatures, ensuring long-lasting performance in tough cutting environments.
   • The coating also helps reduce friction between the insert and the workpiece, contributing to smoother cutting, better chip flow, and improved surface finish.

4. Versatility:

   • The Sumitomo CNMG 120408 AC6040M insert is designed for a wide range of turning operations, including roughing, semi-finishing, and finishing. Its ability to perform in both roughing and finishing operations makes it a highly versatile tool that reduces the need for frequent insert changes during machining.

Benefits of the Sumitomo CNMG 120408 AC6040M Insert

1. Longer Tool Life:

   • The AC6040M grade's advanced coating technology provides excellent heat resistance and wear resistance, resulting in longer tool life even under high-speed and high-temperature machining conditions. This reduces the frequency of insert replacements and minimizes machine downtime.

2. High Cutting Efficiency:

   • With its positive rake angle and stable geometry, the CNMG 120408 AC6040M insert enables high cutting speeds and material removal rates. This contributes to increased productivity and faster cycle times, making it a cost-effective solution for high-volume machining operations.

3. Excellent Surface Finish:

   • The positive rake geometry and smooth cutting action ensure that the CNMG 120408 AC6040M insert provides excellent surface finishes, even in roughing operations. This is particularly important for industries where surface integrity and dimensional accuracy are critical.

4. Reduced Cutting Forces:

   • The positive rake angle reduces cutting forces, making the insert ideal for high-speed machining. Reduced cutting forces also result in less vibration, contributing to better tool life and improved surface finish quality.

5. Versatile and Cost-Effective:

   • The CNMG 120408 AC6040M insert can be used for a wide range of materials, including steel, stainless steel, cast iron, and non-ferrous alloys, making it a highly versatile tool. Its ability to handle both roughing and finishing operations makes it a cost-effective solution, as it reduces the need for multiple insert types.

Applications of the Sumitomo CNMG 120408 AC6040M Insert

The Sumitomo CNMG 120408 AC6040M insert is widely used in industries that require precision turning and high-performance machining. Some common applications include:

1. Automotive Manufacturing:

   • The CNMG 120408 AC6040M insert is ideal for machining components in the automotive industry, including engine blocks, cylinder heads, shafts, valve seats, and transmission parts. Its ability to machine steel, cast iron, and other alloys makes it perfect for automotive component manufacturing.

2. Aerospace:

   • Aerospace components often require high-precision machining and the ability to withstand extreme operating conditions. The CNMG 120408 AC6040M insert is used for machining turbine blades, aircraft engine components, and landing gear parts, where high surface finish and dimensional accuracy are crucial.

3. General Manufacturing:

   • The Sumitomo CNMG 120408 AC6040M insert is suitable for general-purpose turning operations in metalworking, tool making, and job shops. Its versatility allows it to handle a wide range of materials, making it ideal for many general manufacturing applications.

4. Heavy Equipment and Energy:

   • For heavy equipment and energy industries, the CNMG 120408 AC6040M insert is used for machining large, high-strength components like gears, shafts, valves, and pumps. The insert's durability and heat resistance make it perfect for these tough applications.

5. Medical Device Manufacturing:

   • In the medical device industry, precision machining is essential. The CNMG 120408 AC6040M insert is used for machining surgical tools, implants, and other medical components where tight tolerances and smooth finishes are required.

Conclusion

The Sumitomo CNMG 120408 AC6040M insert is a highly effective indexable carbide insert designed for turning and milling operations across a wide range of industries. Its advanced coating technology, positive rake geometry, and triangular shape provide excellent cutting performance, high tool life, and superior surface finishes. The insert's versatility makes it suitable for roughing, semi-finishing, and finishing tasks in applications such as automotive, aerospace, general manufacturing, and heavy equipment. The CNMG 120408 AC6040M insert is an ideal choice for manufacturers seeking a cost-effective, high-performance cutting tool that delivers consistent results in demanding machining environments.