Used Gear Hobber For Sale at Kitmondo – the Metalworking Equipment Marketplace 64

CNC Gear Hobbing Machines: Precision in Gear Manufacturing

CNC gear hobbing machines are essential in the metalworking industry, known for their ability to produce high-precision gears efficiently. Using a specialized cutting tool called a hob, these machines progressively cut gear teeth into a cylindrical workpiece. The integration of computer numerical control (CNC) technology has revolutionized gear hobbing, enhancing precision, versatility, and productivity. This makes CNC gear hobbing machines invaluable in sectors such as automotive, aerospace, industrial machinery, and robotics.

Varieties of CNC Gear Hobbing Machines

CNC gear hobbing machines come in different configurations to suit various gear production requirements:

Horizontal Gear Hobbing Machines

These machines mount the workpiece horizontally, making them ideal for producing spur gears, helical gears, worm gears, and splines. Their versatility allows them to handle a broad range of gear sizes.

Vertical Gear Hobbing Machines

In these machines, the workpiece is mounted vertically, which is particularly suitable for larger and heavier workpieces that are difficult to handle horizontally. Vertical machines provide better stability, making them perfect for large-diameter gears and gear rings.

Universal Gear Hobbing Machines

Capable of performing hobbing operations on both horizontal and vertical axes, universal gear hobbing machines offer maximum flexibility. They are suitable for workshops that need to handle a variety of gear types and sizes.

High-Speed Gear Hobbing Machines

Designed for high productivity, these machines operate at elevated speeds and feed rates, reducing cycle times and increasing output. They are ideal for large-volume production settings.

Essential Features and Specifications

When choosing a CNC gear hobbing machine, consider the following features and specifications:

CNC Control System

The sophistication of the control system affects the machine's precision, user-friendliness, and capability to handle complex gear geometries. Modern CNC systems feature advanced programming capabilities, user-friendly interfaces, and integration with CAD/CAM software.

Axis Configuration

The number of controlled axes (typically 3 to 6) influences the machine's ability to produce complex gear shapes and perform multi-axis machining operations.

Hobbing Speed and Feed Rates

Higher speeds and feed rates contribute to increased productivity and reduced cycle times. Adjustable speeds and feeds allow for optimal cutting conditions for different materials and gear types.

Workpiece Capacity

The maximum diameter, length, and weight of the workpiece the machine can handle is crucial for ensuring it can accommodate the intended gear sizes.

Tooling System

The type and quality of the hob and other cutting tools are essential. Quick-change tooling systems can significantly reduce setup times and increase machine uptime.

Automation and Integration

Features like automatic loading and unloading, in-process inspection, and integration with robotic systems enhance productivity and reduce labor costs.

Benefits of CNC Gear Hobbing Machines

Investing in CNC gear hobbing machines offers several advantages:

• High Precision: Ensures consistent, high-precision gear production, meeting strict tolerances and quality standards.
• Increased Productivity: Automated operations and high-speed capabilities result in faster production cycles and higher output.
• Versatility: Capable of producing a wide range of gear types and sizes, catering to diverse industrial needs.
• Reduced Labor Costs: Automation minimizes manual intervention, lowering labor costs and reducing the potential for human error.
• Flexibility: Advanced CNC control systems allow for easy programming and quick changeovers, enabling efficient switching between different gear types and sizes.

Factors to Consider When Buying a CNC Gear Hobbing Machine

To select the right CNC gear hobbing machine, consider these factors:

Production Volume

Determine the volume of gears you need to produce to choose a machine with suitable capacity and speed.

Gear Types and Sizes

Ensure the machine can handle the specific types and sizes of gears required for your applications.

Precision Requirements

Match the machine’s precision capabilities with your quality standards.

Budget

Balance the initial investment with long-term operational costs, including maintenance and consumables.

Service and Support

Consider the availability of technical support and maintenance services for the machine.

Training

Evaluate the need for operator training to effectively use the machine’s advanced features.

Leading Brands and Pricing

Several reputable brands are known for manufacturing reliable and high-performance CNC gear hobbing machines:

• Liebherr: Known for high-precision gear hobbing machines, Liebherr offers a range of models for various applications. Prices typically range from $300,000 to over $1.5 million, depending on the model and specifications.
• Gleason: A leader in gear manufacturing equipment, Gleason provides advanced CNC gear hobbing machines known for their precision and versatility. Pricing generally ranges from $250,000 to $1.2 million.
• Mitsubishi Heavy Industries (MHI): MHI produces robust and reliable CNC gear hobbing machines, focusing on high productivity and precision. Prices for MHI machines typically range from $400,000 to $1.3 million.
• Kashifuji: Specializing in high-speed gear hobbing machines, Kashifuji is known for its innovative designs and efficient production capabilities. Pricing generally falls between $350,000 and $1.4 million.
• PFAUTER (a division of Gleason): PFAUTER gear hobbing machines are highly regarded for their quality and precision. Prices typically range from $300,000 to over $1.5 million.

Conclusion

CNC gear hobbing machines are critical for producing high-precision gears across various industrial applications. With types ranging from horizontal and vertical to universal and high-speed machines, the choice depends on specific production needs and gear types. Key considerations include the CNC control system, axis configuration, workpiece capacity, tooling systems, and automation features. Leading brands like Liebherr, Gleason, Mitsubishi Heavy Industries, Kashifuji, and PFAUTER provide high-quality CNC gear hobbing machines tailored to different applications and budgets. By carefully evaluating production volume, gear types, precision requirements, and budget, businesses can ensure they invest in the right CNC gear hobbing machine to enhance their manufacturing capabilities and achieve consistent, high-quality gear production.