Used high-speed machining center (18000+ rpm) 73

Introduction to High-Speed Machining Centers

High-speed machining centers are advanced machine tools designed to perform high-precision cutting and milling operations at spindle speeds of 18,000 RPM or higher. These machining centers are essential in industries that require high productivity and precision, such as aerospace, automotive, mold and die manufacturing, and medical device production. They offer enhanced efficiency, superior surface finishes, and the ability to machine complex geometries with high accuracy.

Types of High-Speed Machining Centers

1. Vertical Machining Centers (VMCs)

   • Purpose: Vertical spindle orientation, suitable for a wide range of milling operations.
   • Applications: Ideal for precision parts, die and mold making, and general machining.
   • Key Features: High spindle speeds, advanced control systems, and rigid construction.

2. Horizontal Machining Centers (HMCs)

   • Purpose: Horizontal spindle orientation, allowing for efficient chip removal and longer tool life.
   • Applications: Suitable for heavy-duty cutting, complex part geometries, and large production runs.
   • Key Features: High rigidity, efficient chip evacuation, and multi-sided machining capabilities.

3. 5-Axis Machining Centers

   • Purpose: Machines with 5 axes of movement, providing the ability to machine complex parts in a single setup.
   • Applications: Aerospace components, intricate molds, and complex geometries.
   • Key Features: High-speed spindles, simultaneous 5-axis machining, and advanced CNC control.

4. Gantry Machining Centers

   • Purpose: Large-scale machines with a gantry structure, ideal for machining large and heavy parts.
   • Applications: Aerospace components, large molds, and structural parts.
   • Key Features: High-speed spindles, large working envelope, and robust construction.

Key Features and Specifications

When selecting a high-speed machining center, several key features and specifications should be considered to ensure it meets production needs:

• Spindle Speed: High-speed machining centers typically offer spindle speeds of 18,000 RPM and higher, essential for high-speed cutting and fine surface finishes.

• Spindle Power and Torque: Adequate power and torque are crucial for maintaining cutting performance at high speeds.

• Feed Rates: High feed rates enable faster machining times and improved productivity.

• Accuracy and Precision: Features like linear scales, thermal compensation, and advanced control systems ensure high precision and accuracy.

• Tool Changer Capacity: Large tool changer capacities allow for extended operation without manual intervention, increasing productivity.

• Control System: Advanced CNC control systems (e.g., FANUC, Siemens, Heidenhain) provide precise control, ease of programming, and integration with CAD/CAM software.

• Cooling and Lubrication: Efficient cooling and lubrication systems prevent overheating and ensure consistent cutting performance.

• Construction and Rigidity: High-quality materials and robust construction minimize vibrations and enhance machining accuracy.

Advantages of Using High-Speed Machining Centers

Investing in high-quality high-speed machining centers offers numerous benefits:

• Increased Productivity: Higher spindle speeds and feed rates reduce machining times and increase throughput.

• Superior Surface Finish: High-speed cutting produces smoother surfaces, reducing the need for additional finishing processes.

• Enhanced Precision: Advanced control systems and rigid construction ensure high precision and tight tolerances.

• Versatility: Capable of handling a wide range of materials and complex geometries, making them suitable for various applications.

• Reduced Tool Wear: Efficient chip evacuation and cooling systems prolong tool life, reducing operating costs.

Considerations When Buying a High-Speed Machining Center

To select the right high-speed machining center for your needs, consider the following factors:

• Application Requirements: Determine the specific tasks and materials to choose a machining center with suitable capacity and features.

• Production Volume: Choose a machine with suitable speed and throughput capabilities to match your production volume.

• Precision Needs: Match the machine’s precision capabilities with your quality standards.

• Budget: Balance the initial investment with long-term operational costs, including maintenance and tooling.

• Space and Installation: Consider the space available for installation and any specific requirements for utilities and infrastructure.

• Service and Support: Evaluate the availability of technical support, training programs, and maintenance services to ensure reliable operation.

• Future Expansion: Assess the machine’s scalability to meet potential increases in production demand.

Popular Brands and Pricing

Several reputable brands manufacture high-speed machining centers known for their reliability and performance. Here are a few notable ones:

Vertical Machining Centers (VMCs)

• Makino: Renowned for high-speed VMCs with advanced features. Prices typically range from $150,000 to $500,000, depending on the model and specifications.
• Haas Automation: Offers a wide range of VMCs known for reliability and affordability. Pricing generally ranges from $80,000 to $250,000.
• DMG MORI: Known for precision and advanced technology in VMCs. Prices generally fall between $200,000 and $600,000.

Horizontal Machining Centers (HMCs)

• Mazak: Provides high-quality HMCs with high-speed capabilities. Prices typically range from $200,000 to $700,000.
• Okuma: Known for robust and efficient HMCs. Pricing generally ranges from $180,000 to $650,000.
• Kitamura: Offers advanced HMCs with high-speed spindles. Prices generally fall between $250,000 and $800,000.

5-Axis Machining Centers

• Hermle: Renowned for high-precision 5-axis machining centers. Prices typically range from $300,000 to $1.2 million.
• Mikron (GF Machining Solutions): Offers advanced 5-axis machines for complex parts. Pricing generally ranges from $250,000 to $1 million.
• DMG MORI: Known for versatile and high-precision 5-axis machining centers. Prices generally fall between $400,000 and $1.5 million.

Gantry Machining Centers

• Zimmermann: Specializes in large-scale gantry machining centers with high-speed spindles. Prices typically range from $500,000 to over $2 million.
• Fooke: Known for robust gantry machining centers for large parts. Pricing generally ranges from $600,000 to over $2.5 million.
• Haas Automation: Offers affordable gantry machining centers with advanced features. Prices generally fall between $250,000 and $1 million.

Conclusion

High-speed machining centers are essential for industries requiring high precision, productivity, and the ability to machine complex geometries. With different types such as vertical, horizontal, 5-axis, and gantry machining centers, selecting the right equipment depends on specific production needs, material types, and budget. Key factors to consider include spindle speed, power and torque, feed rates, accuracy, tool changer capacity, control system, cooling and lubrication, and machine construction. Leading brands like Makino, Haas Automation, DMG MORI, Mazak, Okuma, Kitamura, Hermle, Mikron, Zimmermann, and Fooke offer a range of high-quality machining centers to suit various applications and budgets. By carefully evaluating application requirements, production volume, precision needs, and budget, businesses can invest in the right high-speed machining center to enhance their manufacturing capabilities and ensure consistent, high-quality production.