CNC Gear Hobbing Machine

CNC Gear Hobbing Machine | Industrial Product & Engineering Specification Guide

The CNC Gear Hobbing Machine is a multi-axis computer numerical control machine tool engineered for continuous gear generation, including spur gears, helical gears, splines, and worm wheels. The hobbing cutter and workpiece rotation are synchronized via high-speed electronic gearing, enabling precise envelope generation of complex tooth profiles. Designed with an FEA-optimized Meehanite cast iron bed and preloaded roller guideways, the machine absorbs heavy cutting forces during roughing passes while maintaining micron-level index repeatability for finish-hobbing in automated mass-production environments.

Vertical-Type Gear Hobbing Machine
Product Overview The YK3180 is a high-performance, 5-axis CNC vertical gear hobbing machine featuring 4-axis simultaneous linkage. Engineered as a professional-grade vertical machining solution,...
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CNC 4-Simultaneous Axis Gear Hobber
The YK3150 is a high-performance 5-axis CNC gear hobbing machine equipped with an advanced four-linkage control system. Specifically engineered for precision, it is capable of machining spur and...
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Vertical Gear Hobbing Machine
The YK3150 is a 5-Axis CNC Gear Hobbing Machine featuring a five-axis, four-linkage control system. It is primarily designed for machining spur and helical cylindrical gears with a module of ≤6...
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5-Axis CNC Gear Hobbing Machine
This 5-Axis CNC Gear Hobbing Machine is well-suited for mass production, small-batch manufacturing, and single-piece processing of cylindrical gears and worm gears. It is also capable of hobbing...
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Product Range

Vertical CNC Gear Hobbing Series (Compact / Mid-Size)
Application Focus: Automotive transmission gears, EV reduction gearboxes, and steering pinions (Max. Workpiece Diameter: 300 mm, Max. Module: 6 mm).
Heavy-Duty CNC Gear Hobbing Series (Large-Scale)
Application Focus: Industrial planetary gearboxes, heavy machinery components, and wind turbine transmission gears (Max. Workpiece Diameter: 500 mm to 1250 mm, Max. Module: 16 mm).
High-Speed Dry Hobbing Configurations
Application Focus: Automotive Tier-1 high-throughput lines utilizing coated carbide hobs to eliminate fluid disposal and reduce cycle times.

Technical Specifications

Technical Parameter	Model GH-300 (Standard)	Model GH-500 (Heavy-Duty)
Max. Workpiece Diameter	300 mm	500 mm
Max. Module	6 mm	12 mm
Max. Hob Diameter x Length	160 mm x 210 mm	200 mm x 260 mm
Hob Spindle Speed Range	0 - 3,000 RPM (Infinitely variable)	0 - 2,000 RPM
Work Table Diameter	320 mm	500 mm
Max. Axial Slide Travel (Z-axis)	350 mm	550 mm
Max. Radial Slide Travel (X-axis)	220 mm	380 mm
Swivel Angle of Hob Head (A-axis)	+/- 45 degrees	+/- 45 degrees
CNC Control System	Siemens SINUMERIK 840D sl / Fanuc 31i-B	Siemens SINUMERIK 840D sl / Fanuc 31i-B
Total Connected Power	32 kVA	45 kVA
Machine Weight	Approx. 8,500 kg	Approx. 14,000 kg

Key Features

Direct-Drive Torque Table Motor

Replaces traditional mechanical worm gears with a high-torque direct drive, eliminating backlash, minimizing mechanical wear, and sustaining long-term indexing accuracy.

Thermally Symmetric Structure

Ribbed bed architecture isolates thermal distortion zones from core linear axes, controlling thermal drift during 24/7 uninterrupted machining cycles.

Conversational Gear-Cutting Software

Dedicated CNC cycles allow operators to input standard tooth geometry parameters (pressure angle, helix angle, crowning, and root relief) without complex manual G-code programming.

Automation-Ready Interface

Standardized Profinet/Ethernet communication protocols integrated with hardware handshaking blocks for direct interfacing with gantry loaders and articulated robotic cells.

Materials & Surface Finishes

Bed & Column Castings

High-grade Meehanite cast iron (HT300), subjected to thermal stress-relief annealing at 600 degrees Celsius prior to precision CNC milling and guideway induction hardening.

Worktable & Drive Shafts

Forged alloy steel (20CrMnTi or 42CrMo), gas-carburized to a case depth of 1.2 to 1.8 mm, achieving a surface hardness of HRC 58 to 62.

Linear Guideways & Ballscrews

C3/C5 precision ground alloy steel with automated centralized interval lubrication to ensure consistent sliding friction and prevent stick-slip.

Applications

Automotive Powertrain

Production of transmission input/output shafts and helical gears complying with DIN Class 6 noise and transmission error thresholds.

Electric Vehicle (EV) Powertrains

High-speed reduction gears requiring strict tooth-root fillet geometry and low noise emission profiles under high torque loads.

Aerospace Actuators

Processing of high-strength aerospace alloys (such as titanium and nickel-based alloys) requiring high surface integrity and zero micro-cracks.

Industrial Robotics

Precision manufacturing of harmonic drive flexsplines and cycloidal reducer components.

Quality Control & Inspection

Laser Interferometer Calibration

Linear positioning and bi-directional repeatability verified via Renishaw laser measurement systems in accordance with ISO 230-2 standards.

Dynamic Ballbar Testing

Multi-axis simultaneous interpolation contouring accuracy tested and logged for every machine before factory release.

Analytical Gear Verification

Sample test gears evaluated on dedicated gear checkers measuring tooth profile deviation (F-alpha), helix deviation (F-beta), and total cumulative pitch error (F-p).

Factory Acceptance Test (FAT)

Mandatory 72-hour continuous dry-run test under simulated load combined with thermal stability monitoring.

Custom Manufacturing Process

Workpiece Engineering Review

Evaluation of client component drawings, material specifications, batch volumes, and target cycle times.

Tooling & Fixture Design

Custom hydraulic clamping fixture engineering and hob selection tailored to specific tooth profiles (e.g., DIN/AGMA standards).

Casting & Machining

In-house casting stabilization, rough machining, stress-relief heat treatment, and finish grinding on high-precision floor boring machines.

Assembly & Integration

Clean-room sub-assembly of spindle cartridges, scraping of mating sliding surfaces, and electrical cabinet wiring.

Tryout & Sampling

Execution of test cutting using customer-supplied raw blanks, accompanied by a full CMM inspection report.

Technical Support & After-Sales Service

On-Site Commissioning

Mechanical leveling, geometric alignment, and electrical integration executed by OEM-certified field service engineers.

Operator & Maintenance Training

5-day hands-on operational and maintenance training covering G-code programming, conversational gear-cutting cycles, and routine preventive maintenance.

Spare Parts Inventory

Critical wear items (spindle bearings, seals, wiper blades, drive belts) stocked locally for dispatch within 24 hours.

Remote Diagnostics

Secure VPN router integration for real-time PLC/CNC parameter troubleshooting and firmware updates

FAQ

Q: What is the maximum achievable gear quality grade on this machine?

A: Under stable factory thermal conditions and using high-precision solid carbide hobs, the machine consistently achieves DIN Class 6 (or AGMA Q10 to Q11) tooth accuracy, with controlled runout and pitch accumulation within tolerance limits specified by ISO 1328.

Q: Can this machine support dry hobbing without coolant?

A: Yes. The machine can be configured for dry cutting by installing specialized chip conveyors, dry-air mist extraction chutes, and high-temperature-resistant spindle bearings. Dry cutting requires coated carbide hobs (e.g., TiAlN or AlCrN) designed for high thermal loads.

Q: How does the machine handle automatic loading integration with existing robotic cells?

A: The CNC system includes standard digital I/O handshaking protocols and Ethernet/IP or Profinet fieldbus slots. A customized pneumatic or hydraulic gripper interface can be mounted on the machine frame to synchronize with gantry loaders or articulated industrial robots.

Q: What are the electrical and utility requirements for installation?

A: Standard configuration operates on 380V/480V, 3-phase, 50/60 Hz power supply. Compressed air supply requires a regulated pressure of 0.6 MPa (dry and filtered), and coolant filtration systems require a minimum flow rate matching the chip evacuation volume of the specific model.

Q: What is the typical lead time for standard versus customized models?

A: Standard configurations (GH-300 / GH-500) have a standard factory lead time of 12 to 16 weeks. Fully customized variants requiring specialized fixtures, automated loading gantries, or non-standard bed extensions require 20 to 24 weeks following drawing approval.

Q: What warranty and preventive maintenance terms are provided?

A: The machine includes a standard 12-month warranty covering all mechanical, electrical, and hydraulic components against manufacturing defects. Preventive maintenance checklists and remote diagnostic support are provided for the entire operating lifecycle of the machine tool.

Request a Quote

To receive a formal quotation tailored to your specific gear manufacturing requirements, please provide the following parameters:
Component drawing or tooth profile data (Module, number of teeth, helix angle, face width).
Workpiece material specification and hardness (e.g., 20CrMnTi, HRC 20 to 25 pre-machining).
Required annual production volume and target cycle time.
Desired automation level (manual load, gantry loader, or robotic cell integration).

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