Our CNC Hobbing Services
Nostro CNC Hobbing services set the standard for high-precision gear production—combining advanced Tecnologia CNC with decades of expertise in the Hobbing Process. Whether you need custom Gear Types, stretto 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.

What Is CNC Hobbing?
Dentatura CNC 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 Tecnologia CNC (Controllo numerico del computer) to automate the movement of a cutting tool called a “hob.”
Al centro, IL 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, forma, and depth—key for smooth gear operation.
Insomma, 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.
Le nostre capacità: Cosa possiamo fare per te
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. Di seguito è riportato una ripartizione dettagliata delle nostre capacità di base:
Categoria di capacità | Dettagli | Specifications |
CNC Hobbing Services | Production of straight, helical, worm, and spline gears; supports external and internal gear cutting | Gear diameter range: 10mm – 1200mm; Numero di denti: 5 – 200 |
Precision Gear Machining | Tight control over tooth profile accuracy, pece, and backlash | Profile tolerance: Iso 5 (AGMA 10); Pitch error: ± 0,005 mm; Backlash: 0.01mm – 0.1mm |
Machining Capacity | 24/7 production with quick hob changeovers (Sotto 20 minuti) for different gear types | Fino a 500 piccoli ingranaggi (≤50mm diameter) O 100 large gears (≥500mm diameter) per 8-hour shift |
Gear Types Expertise | Specialized setups for standard and custom gear designs | Straight gears, ingranaggi elicoidali, ingranaggi a vite senza fine, splines, bevel gear blanks, planetary gears |
Custom Gear Support | In-house engineering team translates CAD models into hobbable gear designs | Accepts all major CAD formats (FARE UN PASSO, Iges, DWG, Solidworks); offers design optimization for manufacturability |
Se hai bisogno 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: Passo-passo
Nostro Processo CNC segue un strutturato, 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:
- Progetto & Programmazione: Convert your gear’s CAD model (or technical drawing) into a CNC-compatible program. Our team optimizes the hob path, velocità, and feed rate to minimize material waste and maximize tooth precision—critical for gear performance.
- Workpiece Preparation: Clean the gear blank (materia prima) and secure it in a CNC chuck or fixture. We pre-measure the blank’s diameter, spessore, and hardness to confirm it meets production requirements.
- Hob Setup: Select the appropriate hob (materiale: 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.
- Gear Cutting Process: La macchina CNC esegue il programma: 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.
Sfacciato & Ispezione: 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, pece, and backlash. If it meets standards, it moves to Gear Surface Treatment (se necessario).
Materiali: What Works for CNC Hobbing?
Not all materials are suitable for gear manufacturing—we focus on options that balance machinability, forza, resistenza all'usura, e costo. Di seguito sono riportati il Common Gear Materials we process, along with their key Proprietà materiali:
Tipo di materiale | Esempi | Proprietà materiali (Perché funziona) | Ideal Gear Applications |
Ferrous Metals | Acciaio al carbonio (1045), Acciaio in lega (4140), Acciaio inossidabile (304) | Alta resistenza alla trazione; Buona resistenza all'usura; compatible with hobbing tools | Cambi industriali, trasmissioni automobilistiche, heavy machinery |
Metalli non ferrosi | Alluminio (6061), Ottone (C36000) | Leggero; basso attrito; easy to hob (reduces cycle time) | Small motors, Elettronica di consumo, Strumenti di precisione |
Leghe | Lega di titanio (Ti-6al-4v), Lega di nichel (Incontro 718) | Elevata resistenza al calore; Resistenza alla corrosione; strength at extreme temperatures | Motori aerospaziali, marine propulsion systems, oil/gas pumps |
Powder Metals | Sintered Steel (FC-0208) | Cost-effective for high-volume production; consistent density | Automotive starter gears, household appliance gears |
Nostro Selezione del materiale experts help you choose the best option for your gear’s end-use—weighing factors like operating temperature, capacità di carico, e condizioni ambientali (PER ESEMPIO., umidità, prodotti chimici).
Trattamento superficiale: Enhancing Gear Performance
After hobbing, Trattamento superficiale is critical for improving a gear’s durability, resistenza all'usura, 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:
Trattamento superficiale | Scopo | Process Details | Caso d'uso del settore |
Carburazione & Spegnimento | Hardens the gear’s surface (pur mantenendo il nucleo duro) to resist wear | Heat gear to 900–950°C in carbon-rich atmosphere; spegnere in olio; temper to reduce brittleness | Ingranaggi di trasmissione automobilistica, industrial gearboxes |
Placcatura a cromo duro | Aggiunge un duro, strato resistente alla corrosione (5–50 μm thick) | Electroplate chromium onto the gear’s surface; polish for smoothness | Gears in wet environments (PER ESEMPIO., marino, trasformazione alimentare) |
Scatto | Increases 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 |
Fosfating | Creates a porous, oil-retaining layer to reduce friction | Immerse gear in phosphoric acid solution; rinse and dry | Small electric motor gears, household appliance gears |
Macinazione | Improves 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 Qualità della superficie standards—we verify hardness, spessore del rivestimento, and finish before delivering the final product.
Tolleranze: How We Control Gear Precision
Gear Tolerances are the allowable deviations from a gear’s designed dimensions (PER ESEMPIO., tooth profile, pece, backlash). Per gli ingranaggi, tight tolerances are non-negotiable—even small deviations can cause noise, vibrazione, or premature failure in transmission systems.
Nostro Controllo della tolleranza system uses three layers of precision to meet even the strictest industry standards (ISO/AGMA):
- Pre-Machining Calibration: We calibrate our CNC hobbing machines daily using certified master gears (precisione: Iso 3) to ensure hob alignment and synchronization are precise.
- In-Process Monitoring: Sensors on the machine measure tooth pitch and depth in real time, adjusting hob speed or feed rate if deviations occur.
- 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 Livelli di tolleranza.
Below are our standard Gear Tolerances for common applications:
Application | Profile Tolerance (Iso) | Pitch Error | Backlash | Rugosità superficiale (Ra) |
General Industrial | Iso 7 (AGMA 8) | ± 0,01 mm | 0.05–0,1 mm | 1.6–3.2 μm |
Automobile | Iso 6 (AGMA 9) | ±0.007mm | 0.03–0.08mm | 0.8–1.6 μm |
Aerospace/Medical | Iso 5 (AGMA 10) | ± 0,005 mm | 0.01–0.05mm | 0.4–0.8 μm |
Advantages of CNC Hobbing: Why It’s Better Than Other Gear Cutting Methods
Compared to alternative gear cutting processes (PER ESEMPIO., gear shaping, fresatura), Dentatura CNC offers unique benefits that save time, ridurre i costi, and improve gear quality. Ecco la parte superiore Advantages of CNC Hobbing:
- Vantaggi di precisione: CNC synchronization ensures every tooth on a gear (and every gear in a batch) has identical profile and spacing. This eliminates “tooth-to-tooth variation”—a common issue with manual methods that causes gear noise and wear. For high-precision applications (PER ESEMPIO., aerospaziale), this is non-negotiable.
- Vantaggi dei costi: 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.
Flessibilità: CNC programs are easy to modify—we can switch between Gear Types (PER ESEMPIO., straight to helical) in under 30 minuti (no need for new fixtures). This is perfect for small-batch projects or rapid prototyping.
Industria delle applicazioni: Where CNC Hobbing Makes a Difference
CNC Hobbing Uses span nearly every industry that relies on mechanical transmission systems—gears are the “workhorses” that transfer power from motors to moving parts. Di seguito sono riportati la parte superiore Settori del settore Serviamo, con esempi del mondo reale:
Industria | Application Fields | Specific Gears We Produce |
Automobile | Transmissions, motori, steering systems, brakes | Helical transmission gears, planetary gears, differential gears |
Aerospaziale | Jet engines, attrezzatura di atterraggio, flight control systems | High-temperature alloy gears, worm gears for actuation systems |
Industriale | Trasportatori, pompe, compressori, cambi | Large helical gears (≥500mm diameter), spline shafts, reduction gear sets |
Medico | Surgical robots, diagnostic equipment, patient lifts | Small precision gears (≤20mm diameter), low-noise gears |
Renewable Energy | Wind 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 (Turbine eoliche).
Tecniche di produzione: Optimizing Gear Production
To get the most from CNC hobbing, Usiamo Specialized Tecniche di produzione that balance speed, precisione, e costo. Here are three key methods we employ:
- High-Speed Hobbing: Per materiali morbidi (PER ESEMPIO., alluminio, acciaio a basso contenuto di carbonio), we use carbide hobs and increase spindle speed (fino a 4,000 giri al minuto). 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 (PER ESEMPIO., ottone, 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 (PER ESEMPIO., cambi industriali), Usiamo “coronamento dei denti”—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.
Questi Hobbing Techniques are backed by decades of gear manufacturing experience—we don’t just follow industry best practices; we help define them.
Casi studio: Real Success Stories
Nostro CNC Hobbing Services have solved complex gear manufacturing challenges for clients across industries. Below are two short Casi studio that highlight our impact:
Caso di studio 1: Automotive Transmission Manufacturer
A leading car maker struggled with noisy transmission gears produced via manual shaping. The gears (acciaio in lega 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 tolleranza). Risultati:
- 80% reduction in transmission noise
- 90% decrease in warranty claims related to gear failure
- 25% produzione più veloce (24/7 automazione)
Caso di studio 2: Wind Turbine Gearbox Supplier
A client needed large helical gears (diametro: 1000mm; materiale: acciaio in lega 4340) for wind turbine gearboxes. Their previous supplier used milling, che ha impiegato 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%. Risultati:
- 67% faster lead times
- 66% lower material costs
Gears met ISO 5 tolleranza (AGMA 10) for wind energy standards
Perché scegliere noi: Our Competitive Advantages
With so many CNC hobbing providers, Perché collaborare con noi? Ecco la parte superiore Reasons to Choose our services:
- Proven Precision: Teniamo ISO 9001 e certificazioni AS9100 (per aerospaziale) and maintain a 99.8% quality pass rate. Every gear is inspected twice—once during machining, once after surface treatment—using calibrated GMMs.
- Capacità scalabile: Nostro 8 CNC hobbing machines (tra cui 2 large-format machines for gears up to 1200mm diameter) operate 24/7. We handle batches from 1 A 100,000 gears and offer rush orders (2–3 day turnaround) for emergency needs.
- Gear Expertise: I nostri ingegneri in media 15+ years of gear manufacturing experience. They don’t just run machines—they help optimize your gear design (PER ESEMPIO., tooth profile, Selezione del materiale) to improve performance and reduce costs.
- Transparent Pricing: We provide detailed, itemized quotes with no hidden fees. For long-term partnerships, Offriamo sconti sul volume (fino a 25% for annual orders over 50,000 marcia) and price locks to protect against material cost fluctuations.
- Servizio incentrato sul cliente: Every client gets a dedicated gear engineer as their point of contact—available to answer questions, Fornire aggiornamenti sui progressi, or adjust designs. We also offer free gear design reviews to catch potential manufacturability issues early.
Nostro Punti di forza aren’t just about equipment—they’re about delivering the Customer Benefits that matter most: reliable gears, Consegna puntuale, and peace of mind.