Service de Tournage CNC —
Tour, Swiss & Tournage avec Outils Motorisés
Arbres, bagues, goupilles et pièces rotatives complexes usinés à ±0,005 mm standard. Nos tours CNC, machines Swiss et centres de tournage-fraisage traitent toute pièce cylindrique.
Qu'est-ce que le Tournage CNC ?
Le tournage CNC est un procédé d'usinage où la pièce tourne à grande vitesse tandis qu'un outil de coupe monopoint fixe traverse les axes X et Z. The result is parts with cylindrical, conical, threaded or contoured profiles — shafts, pins, bushings, nozzles, fittings and more.
Standard CNC lathes are the most economical option for rotational parts up to 400 mm diameter and 1,500 mm length. Adding live tooling to the turret allows milling, drilling and tapping operations in the same setup — eliminating costly repositioning.
Swiss-type CNC turning uses a guide bushing to support the bar stock immediately adjacent to the cutting zone. This eliminates deflection and enables extremely long, slender parts — down to 0.5 mm diameter — at micron-level tolerances. It is the method of choice for medical screws, dental implants and precision electronics.
Choose standard turning for general-purpose cylindrical parts. Choose Swiss when L/D exceeds 10:1 or diameter falls below 6 mm. Add live tooling when cross-features would otherwise require a second machine. See our tolerance guide for detailed capability data.
Types de Tournage CNC
Nous exploitons des tours CNC, centres Swiss et centres de tournage-fraisage.
CNC Lathe Turning
2-axis CNC turning is the foundation of cylindrical part production. The workpiece rotates while a stationary cutting tool traverses in X and Z to produce shafts, pins, step-bores, threads and tapers with excellent repeatability.
- Standard tolerance ±0.01 mm
- Max diameter 400 mm
- Max length 1,500 mm
- Internal and external threads
Ideal for: shafts, pins, spacers, threaded fasteners, pulleys
CNC Turning with Live Tooling
Live-tooling lathes add rotating milling and drilling heads on the turret. Cross-holes, keyways, flats and off-centre features can all be machined without moving the part to a milling centre — saving setups and maintaining concentricity.
- Milling, drilling & tapping in one setup
- Off-centre and angular features
- Slot, flat, cross-hole in single clamping
- Better concentricity than multi-setup
Ideal for: valve bodies, hydraulic fittings, shafts with keyways or cross-holes
Tournage CNC Suisse
Swiss-type lathes guide the bar stock through a guide bushing, supporting it right at the cut. This near-zero deflection setup allows extremely slender parts — down to 0.5 mm diameter — to be machined to micron-level precision at high feed rates.
- Min diameter 0.5 mm
- Tolerance to ±0.003 mm
- Ideal for long, slender parts
- High-volume production efficiency
Ideal for: medical pins, watch parts, dental screws, micro-shafts, electronics
Spécifications de Tournage
Spécifications de référence rapide par type de machine.
| Spécification | Tour CNC | Swiss CNC |
|---|---|---|
| Tolérance Standard (diamètre) | ±0.01 mm | ±0.005 mm |
| Tolérance Haute Précision | ±0.005 mm | ±0.003 mm |
| Diam. Tournage Max | 400 mm | 32 mm |
| Longueur Tournage Max | 1,500 mm | 300 mm |
| Diam. Min | 2 mm | 0.5 mm |
| Finition Ra | 0.8 μm std | 0.4 μm std |
| Normes Filetage | M, UNC, UNF, BSPT | M, UNC, UNF |
| Outils Vivants | Available | Available |
Les tolérances dépendent du matériau, du rapport L/D et de la géométrie de la caractéristique. Contactez-nous pour une analyse DFM sur les dimensions critiques.
Matériaux que nous Tournons
Nous tournons 50+ métaux et plastiques techniques :
Finitions de Surface
Toutes les finitions de surface disponibles en interne.
Brut de tournage
Ra 1.6–3.2 μm direct off the lathe. Tool marks visible but functionally clean surfaces.
Rectification
Post-turn cylindrical grinding to Ra 0.2–0.4 μm for bearing journals, sealing surfaces and precision fits.
Anodisation
Type II or Type III hard anodizing for turned aluminum parts. Excellent corrosion and wear resistance.
Électropolissage
Electrochemical smoothing for stainless steel turned parts. Ideal for FDA/medical applications.
Nickelage
Electroless nickel for uniform thickness on complex turned geometries. Excellent corrosion resistance.
Black Oxide
Conversion coating for steel turned parts — mild corrosion resistance, no dimensional change.
Passivation
Stainless steel chromium-oxide layer restoration after machining. ASTM A967 compliant.
Polissage
Manual or mass-media polishing to mirror Ra <0.1 μm for shaft surfaces and hydraulic components.
Directives de Conception pour le Tournage CNC
Ces directives garantissent des devis précis et la fabricabilité.
- L/D ratio below 10:1 for standard turning — slender parts beyond this ratio need steady rest support or Swiss-type machines.
- Internal bore diameter minimum 6 mm for standard boring bars. Smaller requires Swiss-type or gun drilling.
- Thread reliefs and undercuts add setup time — only specify where functionally necessary.
- Specify concentricity and runout as GD&T callouts on 2D drawing, not just dimensional tolerances in the model.
- Knurling, O-ring grooves and thread forms should be called out on the drawing with form standard (e.g. 60° Unified thread).
- Material selection matters for turning: free-machining grades (303 SS, C360 brass) cut faster and cheaper than work-hardening grades (316L, Ti).
Directives de Conception pour le Tournage CNC
Ces directives garantissent des devis précis et la fabricabilité.
Demander un Devis de Tournage CNCSecteurs Desservis
Nos capacités de tournage CNC servent des applications exigeantes dans six secteurs.
Services Connexes
CNC Milling
3-axis, 4-axis & 5-axis milling for prismatic parts, pockets, surfaces. ±0.001 mm.
5-Axis Machining
Single-setup complex geometry. Aerospace, medical and turbomachinery specialists.
Tolerance Guide
Full achievable tolerances, GD&T capabilities and design guidelines.
Prêt à Tourner vos Pièces ?
Téléchargez vos fichiers CAO et recevez un devis de tournage CNC en 24 heures.
Need milling too? Shafts with keyways, valve stems with hex drives, threaded parts with milled flats — run the whole job through our combined milling- and-turning shop instead. Same factory, same engineer, one quote, no fixturing re-stack error.
See CNC Milling + Turning Services
