Our CNC Hobbing Services

Unser CNC Hobbing services set the standard for high-precision gear production—combining advanced CNC -Technologie with decades of expertise in the Hobbing Process. Whether you need custom Gear Types, eng Gear Tolerances, or scalable production for critical transmission components, we transform raw materials into gears that drive reliability. Trust our proven Precision Gear Machining capabilities to meet your industry’s strictest performance standards, on time and within budget.​

cnc hobbing
cnc hobbing

What Is CNC Hobbing?

CNC -Hobbing is a specialized subtractive manufacturing process designed exclusively for producing gears—one of the most critical components in mechanical transmission systems. Unlike manual gear cutting (which relies on operator skill and is prone to inconsistency), it uses CNC -Technologie (Computer numerische Steuerung) to automate the movement of a cutting tool called ahob.

Im Kern, Die Hobbing Process works by rotating both the hob (a cylindrical tool with helical cutting teeth) and the workpiece (the gear blank) in a synchronized manner. As the hob feeds into the blank, its teeth progressively cut the gear’s teeth profile—whether it’s straight, helical, or worm gears. This synchronization ensures each tooth has identical spacing, Form, and depth—key for smooth gear operation.​

Zusamenfassend, Gear Hobbing (powered by CNC) is the gold standard for high-volume, high-precision gear production. It eliminates human error, ensures consistency across batches, and delivers gears that fit and function seamlessly in everything from small motors to heavy industrial machinery.

Unsere Fähigkeiten: Was wir für Sie tun können

We’ve invested in state-of-the-art CNC hobbing machines and trained our team to handle diverse gear manufacturing needs—from prototype development to mass production. Unten finden Sie eine detaillierte Aufschlüsselung unserer Kernfunktionen:

FähigkeitskategorieDetailsSpecifications​
CNC Hobbing ServicesProduction of straight, helical, worm, and spline gears; supports external and internal gear cutting​Gear diameter range: 10mm – 1200mm; Anzahl der Zähne: 5 – 200​
Precision Gear MachiningTight control over tooth profile accuracy, Tonhöhe, and backlash​Profile tolerance: ISO 5 (AGMA 10); Pitch error: ± 0,005 mm; Backlash: 0.01mm – 0.1mm​
Machining Capacity24/7 production with quick hob changeovers (unter 20 Minuten) for different gear types​Bis zu 500 kleine Zahnräder (≤50mm diameter) oder 100 large gears (≥500mm diameter) per 8-hour shift​
Gear Types ExpertiseSpecialized setups for standard and custom gear designs​Straight gears, helikale Zahnräder, Wurmgetriebe, splines, bevel gear blanks, planetary gears​
Custom Gear SupportIn-house engineering team translates CAD models into hobbable gear designs​Accepts all major CAD formats (SCHRITT, IGES, DWG, Solidworks); offers design optimization for manufacturability​

Ob du brauchst 50 prototype helical gears for a new electric vehicle or 10,000 worm gears for industrial conveyors, our capabilities scale to match your timeline and quality goals.

The CNC Hobbing Process: Schritt für Schritt

Unser CNC -Prozess folgt einem strukturierten, quality-focused workflow to ensure every gear meets your exact specifications. Each step is automated but monitored by our gear engineers to catch inconsistencies early:

  1. Design & Programmierung: Convert your gear’s CAD model (or technical drawing) into a CNC-compatible program. Our team optimizes the hob path, Geschwindigkeit, and feed rate to minimize material waste and maximize tooth precision—critical for gear performance.​
  1. Workpiece Preparation: Clean the gear blank (Rohstoff) and secure it in a CNC chuck or fixture. We pre-measure the blank’s diameter, Dicke, and hardness to confirm it meets production requirements.​
  1. Hob Setup: Select the appropriate hob (Material: high-speed steel for soft metals, carbide for hard alloys) based on the gear’s material and tooth profile. The hob is mounted on the machine’s spindle and calibrated for correct alignment.​
  1. Gear Cutting Process: Die CNC -Maschine führt das Programm aus: the hob and gear blank rotate in synchronized motion, while the hob feeds axially into the blank. This step cuts the gear’s teeth to the exact depth and profile specified.​

Enttäuschung & Inspektion: Remove any sharp edges (Burrs) from the gear’s teeth using automated deburring tools. We then inspect the gear using a gear measuring machine (GMM) to verify tooth profile, Tonhöhe, and backlash. If it meets standards, it moves to Gear Surface Treatment (bei Bedarf).

Materialien: What Works for CNC Hobbing?

Not all materials are suitable for gear manufacturing—we focus on options that balance machinability, Stärke, Resistenz tragen, und Kosten. Unten sind die Common Gear Materials we process, along with their key Materialeigenschaften:

MaterialtypBeispieleMaterialeigenschaften (Warum funktioniert es)Ideal Gear Applications​
Ferrous MetalsKohlenstoffstahl (1045), Legierungsstahl (4140), Edelstahl (304)Hohe Zugfestigkeit; Guter Verschleißfestigkeit; compatible with hobbing tools​Industriegetriebe, Automobilübertragungen, heavy machinery​
NichteisenmetalleAluminium (6061), Messing (C36000)Leicht; geringe Reibung; easy to hob (reduces cycle time)Small motors, Unterhaltungselektronik, Präzisionsinstrumente
LegierungenTitanlegierung (Ti-6al-4V), Nickellegierung (Inconel 718)Hoher Wärmewiderstand; Korrosionsbeständigkeit; strength at extreme temperatures​Luft- und Raumfahrtmotoren, marine propulsion systems, oil/gas pumps​
Powder MetalsSintered Steel (FC-0208)Kostengünstig für die Massenproduktion; consistent density​Automotive starter gears, household appliance gears​

Unser Materialauswahl experts help you choose the best option for your gear’s end-use—weighing factors like operating temperature, Belastungskapazität, und Umweltbedingungen (Z.B., Feuchtigkeit, Chemikalien).

Oberflächenbehandlung: Enhancing Gear Performance

After hobbing, Oberflächenbehandlung is critical for improving a gear’s durability, Resistenz tragen, and lifespan—especially for gears that operate under high load or in harsh environments. We offer five core Treatment Methods, tailored to your gear’s application:

OberflächenbehandlungZweckProcess Details​Branchengebrauchsfall
Kohlensäure & AbschreckenHardens the gear’s surface (während der Kern schwierig hält) to resist wear​Heat gear to 900–950°C in carbon-rich atmosphere; Öl einlösen; temper to reduce brittleness​Automobilgetriebe, industrial gearboxes​
Hart ChrombeschichtungFügt hart hinzu, korrosionsbeständige Schicht (5–50 μm thick)Electroplate chromium onto the gear’s surface; polish for smoothness​Gears in wet environments (Z.B., Marine, Lebensmittelverarbeitung)
Schuss sich angerenIncreases fatigue resistance by creating compressive stress on the surface​Blast gear with small steel/ceramic shots (0.2–1.0mm) at high pressure​Aerospace gears, high-performance racing transmission gears​
PhosphatingCreates a porous, oil-retaining layer to reduce friction​Immerse gear in phosphoric acid solution; rinse and dry​Small electric motor gears, household appliance gears​
SchleifenImproves surface finish and tooth precision (for high-precision gears)Use a cylindrical grinding wheel to refine tooth profile; achieves Ra 0.4–0.8 μm​Medical equipment gears, precision instrumentation gears​

Each treatment is tested to ensure it meets Oberflächenqualität standards—we verify hardness, Beschichtungsdicke, and finish before delivering the final product.

Toleranzen: How We Control Gear Precision

Gear Tolerances are the allowable deviations from a gear’s designed dimensions (Z.B., tooth profile, Tonhöhe, backlash). Für Zahnräder, tight tolerances are non-negotiable—even small deviations can cause noise, Vibration, or premature failure in transmission systems.​

Unser Toleranzkontrolle system uses three layers of precision to meet even the strictest industry standards (ISO/AGMA):

  1. Pre-Machining Calibration: We calibrate our CNC hobbing machines daily using certified master gears (Genauigkeit: ISO 3) to ensure hob alignment and synchronization are precise.​
  1. In-Prozess-Überwachung: Sensors on the machine measure tooth pitch and depth in real time, adjusting hob speed or feed rate if deviations occur.​
  1. Post-Machining Inspection: Our quality team uses a gear measuring machine (GMM) to scan every gear’s tooth profile, pitch circle diameter, and backlash. We reject any gear that falls outside your specified Toleranzniveaus.

Below are our standard Gear Tolerances for common applications:

Application​Profile Tolerance (ISO)Pitch Error​Backlash​Oberflächenrauheit (Ra)
General Industrial​ISO 7 (AGMA 8)± 0,01 mm0.05–0,1 mm1.6–3.2 μm​
AutomobilISO 6 (AGMA 9)±0.007mm​0.03–0.08mm​0.8–1.6 μm​
Aerospace/Medical​ISO 5 (AGMA 10)± 0,005 mm0.01–0.05mm​0.4–0.8 μm​

Advantages of CNC Hobbing: Why It’s Better Than Other Gear Cutting Methods

Compared to alternative gear cutting processes (Z.B., gear shaping, Mahlen), CNC -Hobbing offers unique benefits that save time, Kosten senken, and improve gear quality. Hier sind die Spitze Advantages of CNC Hobbing:

  • Präzisionsvorteile: CNC synchronization ensures every tooth on a gear (and every gear in a batch) has identical profile and spacing. This eliminatestooth-to-tooth variation—a common issue with manual methods that causes gear noise and wear. For high-precision applications (Z.B., Luft- und Raumfahrt), this is non-negotiable.​
  • Kostenvorteile: CNC hobbing is faster than most other gear cutting processes—one machine can produce up to 500 small gears per shift. It also uses fewer tools (a single hob can cut multiple gears) and generates less waste, cutting production costs by 20–30% for high-volume runs.​
  • Quality Advantages: The hobbing process creates a smooth, consistent tooth surface finish (RA 0,8-3,2 μm) that requires minimal secondary finishing. This reduces lead times and ensures gears operate quietly and efficiently.​

Flexibilität: CNC programs are easy to modify—we can switch between Gear Types (Z.B., straight to helical) in under 30 Minuten (no need for new fixtures). This is perfect for small-batch projects or rapid prototyping.

Anwendungsbranche: Where CNC Hobbing Makes a Difference

CNC Hobbing Uses span nearly every industry that relies on mechanical transmission systems—gears are theworkhorsesthat transfer power from motors to moving parts. Unten sind die oberen Branchensektoren Wir dienen, mit realen Beispielen:

IndustrieApplication Fields​Specific Gears We Produce​
AutomobilTransmissions, Motoren, steering systems, brakes​Helical transmission gears, planetary gears, differential gears​
Luft- und RaumfahrtJet engines, Fahrwerk, flight control systems​High-temperature alloy gears, worm gears for actuation systems​
IndustriellFörderer, Pumps, Kompressoren, GetriebeLarge helical gears (≥500mm diameter), spline shafts, reduction gear sets​
MedizinischSurgical robots, diagnostic equipment, patient lifts​Small precision gears (≤20mm diameter), low-noise gears​
Erneuerbare EnergieWind turbine gearboxes, solar tracking systems​Heavy-duty planetary gears, large worm gears for wind turbines​

In each sector, our hobbing services ensure gears perform under extreme conditions—from high speeds (aerospace engines) to heavy loads (Windkraftanlagen).

Fertigungstechniken: Optimizing Gear Production

To get the most from CNC hobbing, Wir verwenden spezialisiert Fertigungstechniken that balance speed, Präzision, und Kosten. Here are three key methods we employ:

  • High-Speed Hobbing: Für weiche Materialien (Z.B., Aluminium, Kohlenstoffstahl), we use carbide hobs and increase spindle speed (bis zu 4,000 Drehzahl). This reduces cycle time by 40% while maintaining tooth precision—ideal for high-volume consumer electronics gears.​
  • Dry Hobbing: For materials that don’t generate excessive heat (Z.B., Messing, powder metals), we skip cutting fluids. This reduces environmental impact, lowers disposal costs, and eliminates the need for post-machining cleaning—cutting production time by 15%.​
  • Profile Optimization: For high-load gears (Z.B., Industriegetriebe), Wir verwenden “Zahnkrönung”—a technique that slightly modifies the tooth profile to distribute load evenly across the tooth face. This increases gear lifespan by 50% or more and reduces the risk of premature failure.​

Diese Hobbing Techniques are backed by decades of gear manufacturing experience—we don’t just follow industry best practices; we help define them.

Fallstudien: Real Success Stories

Unser CNC Hobbing Services have solved complex gear manufacturing challenges for clients across industries. Below are two short Fallstudien that highlight our impact:

Fallstudie 1: Automotive Transmission Manufacturer​

A leading car maker struggled with noisy transmission gears produced via manual shaping. The gears (Legierungsstahl 4140) had inconsistent tooth pitch (error: ± 0,02 mm), causing vibration and customer complaints. We switched them to our CNC hobbing process, delivering gears with ±0.007mm pitch error (ISO 6 Toleranz). Ergebnisse:

  • 80% reduction in transmission noise​
  • 90% decrease in warranty claims related to gear failure​
  • 25% schnellere Produktion (24/7 Automatisierung)

Fallstudie 2: Wind Turbine Gearbox Supplier​

A client needed large helical gears (Durchmesser: 1000mm; Material: Legierungsstahl 4340) for wind turbine gearboxes. Their previous supplier used milling, was dauerte 10 hours per gear and had high waste (15%). Our CNC hobbing process cut production time to 3 hours per gear and reduced waste to 5%. Ergebnisse:

  • 67% faster lead times​
  • 66% lower material costs​

Gears met ISO 5 Toleranz (AGMA 10) for wind energy standards

Warum uns wählen?: Our Competitive Advantages

With so many CNC hobbing providers, Warum mit uns zusammenarbeiten? Hier sind die Spitze Reasons to Choose our services:

  1. Proven Precision: Wir halten ISO 9001 und AS9100 Zertifizierungen (Für die Luft- und Raumfahrt) and maintain a 99.8% quality pass rate. Every gear is inspected twice—once during machining, once after surface treatment—using calibrated GMMs.​
  1. Skalierbare Kapazität: Unser 8 CNC hobbing machines (einschließlich 2 large-format machines for gears up to 1200mm diameter) arbeiten 24/7. We handle batches from 1 Zu 100,000 gears and offer rush orders (2–3 day turnaround) for emergency needs.​
  1. Gear Expertise: Unsere Ingenieure durchschnittlich 15+ years of gear manufacturing experience. They don’t just run machines—they help optimize your gear design (Z.B., tooth profile, Materialauswahl) to improve performance and reduce costs.​
  1. Transparent Pricing: We provide detailed, itemized quotes with no hidden fees. For long-term partnerships, Wir bieten Volumenrabatte an (bis zu 25% for annual orders over 50,000 Getriebe) and price locks to protect against material cost fluctuations.​
  1. Kundenorientierter Service: Every client gets a dedicated gear engineer as their point of contact—available to answer questions, Bereitstellung von Fortschrittsaktualisierungen, or adjust designs. We also offer free gear design reviews to catch potential manufacturability issues early.​

Unser Stärken aren’t just about equipment—they’re about delivering the Customer Benefits that matter most: reliable gears, Pünktliche Lieferung, and peace of mind.

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