Preowned high speed machining centers 85

The Ultimate Guide to High-Speed Machining Centers

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

Types of High-Speed Machining Centers

Vertical Machining Centers (VMCs)

• Purpose: Feature a vertical spindle orientation, ideal for a broad spectrum of milling operations.
• Applications: Precision parts, die and mold making, general machining.
• Key Features: High spindle speeds, advanced control systems, robust construction.

Horizontal Machining Centers (HMCs)

• Purpose: Feature a horizontal spindle orientation, facilitating efficient chip removal and extending tool life.
• Applications: Heavy-duty cutting, complex part geometries, large production runs.
• Key Features: High rigidity, efficient chip evacuation, multi-sided machining capabilities.

5-Axis Machining Centers

• Purpose: Provide five axes of movement, enabling machining of complex parts in a single setup.
• Applications: Aerospace components, intricate molds, complex geometries.
• Key Features: High-speed spindles, simultaneous 5-axis machining, advanced CNC control.

Gantry Machining Centers

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

Key Features and Specifications

When selecting a high-speed machining center, consider the following features and specifications to ensure it meets your production needs:

• Spindle Speed: Typically offers spindle speeds of 18,000 RPM and higher, crucial for high-speed cutting and fine surface finishes.
• Spindle Power and Torque: Essential for maintaining cutting performance at high speeds.
• Feed Rates: High feed rates enable faster machining times and improved productivity.
• Accuracy and Precision: Linear scales, thermal compensation, and advanced control systems ensure high precision.
• Tool Changer Capacity: Large capacities allow for extended operation without manual intervention.
• Control System: Advanced CNC systems (e.g., FANUC, Siemens, Heidenhain) offer precise control, ease of programming, and CAD/CAM integration.
• Cooling and Lubrication: Efficient systems prevent overheating and ensure consistent cutting performance.
• Construction and Rigidity: High-quality materials and robust construction minimize vibrations, enhancing machining accuracy.

Advantages of Using High-Speed Machining Centers

Investing in high-speed machining centers provides numerous benefits:

• Increased Productivity: Higher spindle speeds and feed rates reduce machining times and boost throughput.
• Superior Surface Finish: High-speed cutting produces smoother surfaces, reducing the need for additional finishing.
• Enhanced Precision: Advanced control systems and robust construction ensure high precision and tight tolerances.
• Versatility: Suitable for a wide range of materials and complex geometries.
• Reduced Tool Wear: Efficient chip evacuation and cooling systems prolong tool life, lowering operating costs.

Considerations When Buying a High-Speed Machining Center

To choose the right high-speed machining center, consider the following:

• Application Requirements: Identify specific tasks and materials to select a machining center with the appropriate capacity and features.
• Production Volume: Ensure the machine's speed and throughput capabilities match your production volume.
• Precision Needs: Align the machine’s precision capabilities with your quality standards.
• Budget: Balance initial investment with long-term operational costs, including maintenance and tooling.
• Space and Installation: Consider available space and specific requirements for utilities and infrastructure.
• Service and Support: Evaluate the availability of technical support, training programs, and maintenance services.
• Future Expansion: Assess the machine’s scalability to meet potential increases in production demand.

Popular Brands and Pricing

Vertical Machining Centers (VMCs)

• Makino: Prices range from $150,000 to $500,000.
• Haas Automation: Pricing ranges from $80,000 to $250,000.
• DMG MORI: Prices fall between $200,000 and $600,000.

Horizontal Machining Centers (HMCs)

• Mazak: Prices range from $200,000 to $700,000.
• Okuma: Pricing ranges from $180,000 to $650,000.
• Kitamura: Prices fall between $250,000 and $800,000.

5-Axis Machining Centers

• Hermle: Prices range from $300,000 to $1.2 million.
• Mikron (GF Machining Solutions): Pricing ranges from $250,000 to $1 million.
• DMG MORI: Prices fall between $400,000 and $1.5 million.

Gantry Machining Centers

• Zimmermann: Prices range from $500,000 to over $2 million.
• Fooke: Pricing ranges from $600,000 to over $2.5 million.
• Haas Automation: Prices fall between $250,000 and $1 million.

Conclusion

High-speed machining centers are essential for industries requiring high precision, productivity, and the capability to machine complex geometries. With various types, such as vertical, horizontal, 5-axis, and gantry machining centers, selecting the right equipment depends on specific production needs, material types, and budget. 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.