Twin Spindle Mill Turn Center
The Twin Spindle Mill-Turn Center integrates high-precision turning, driven-tool milling, and automated two-sided machining into a single CNC platform. Designed to eliminate secondary machine setups, this system features a primary main spindle and an opposing second spindle that seamlessly receives the workpiece for complete front-to-rear processing.
Technical Specifications
|
Item |
Standard Specification |
|
Machine Structure |
45 Degree Slant Bed Rigid Cast Iron |
|
Max. Swing Over Bed |
550 mm |
|
Max. Turning Diameter |
360 mm |
|
Max. Turning Length |
600 mm |
|
Main / Sub-Spindle Chuck Size |
8 inch / 6 inch (Hydraulic) |
|
Main / Sub-Spindle Nose |
A2-6 / A2-5 |
|
Main Spindle Bar Capacity |
65 mm |
|
Max. Main / Sub-Spindle Speed |
4,500 RPM / 5,000 RPM |
|
Main / Sub-Spindle Motor Power |
15 kW / 11 kW |
|
Axis Travel (X / Z / Y) |
220 mm / 650 mm / Plus/Minus 50 mm |
|
Sub-Spindle Travel (B/Z2 Axis) |
620 mm |
|
Driven Tool Speed & Power |
6,000 RPM / 5.5 kW |
|
Rapid Traverse (X / Z / Y) |
24 m/min / 30 m/min / 12 m/min |
|
Positioning Accuracy |
Plus/Minus 0.004 mm |
|
Repeatability |
Plus/Minus 0.002 mm |
|
Machine Dimensions (L x W x H) |
3,800 x 2,100 x 2,200 mm |
|
Approximate Machine Weight |
6,800 kg |
Key Machine Highlights
Simultaneous Two-Sided Machining: Main and sub-spindle configuration provides immediate access to both front and rear workpiece faces within a single setup.
Full Mill-Turn Versatility: Driven tooling combined with optional Y-axis, C-axis, or B-axis capabilities enables multi-axis cross-drilling, off-center slotting, contouring, and thread milling.
Superior Concentricity & Accuracy: Automatic spindle-to-spindle transfer guarantees precise front-to-back phase alignment and eliminates mounting stack-up errors.
High Thermal Stability & Rigidity: One-piece heavy-duty slant bed design dampens vibration during heavy metal removal, extending tool life and preserving tight tolerances.
Flexible Tooling Systems: High-capacity turrets (BMT or VDI interface) accept a versatile mix of static turning tools and high-rpm driven tools.
Seamless Automation Integration: Engineered for lights-out manufacturing with built-in support for bar feeders, parts catchers, and gantry/robotic loading systems.
Industry Applications
Automotive & EV: Transmission shafts, drive components, steering knuckles, and motor hubs.
Fluid Power & Hydraulics: Valve spools, hydraulic fittings, pump housings, and manifolds.
Aerospace & Defense: High-precision bushings, actuator shafts, and structural connectors.
General Contract Manufacturing: High-mix or high-volume job shops aiming to minimize machine footprint and labor dependency.
Twin-Spindle Machining System
Main Spindle
Primary roughing, heavy turning, facing, threading, and initial drilling directly from raw bar stock or castings.
Second Spindle
Automated pick-off and precision rear-side operations including facing, back-boring, back-threading, and secondary milling.
Synchronized Transfer Mechanics
The second spindle advances to grip the part at precise Z-axis positions. Speed and angular phase synchronization ensure smooth transfers without interrupting machine cycle momentum.
Milling and Drilling Capability
C-Axis Contouring: Continuous spindle positioning for polar coordinate milling, radial drilling, and keyway cutting.
Y-Axis Travel: Off-center drilling, Y-axis flat milling, side slotting, and complex 3D surface contouring off the centerline.
B-Axis Head (Optional): Swiveling milling head for angular hole drilling, compound angle machining, and complex 5-axis simultaneous operations.
Tooling, Control & Workholding Systems
Driven Tooling: BMT or VDI interface turrets providing stable torque transmission for high-speed drilling and heavy end-milling.
CNC Systems: Advanced multi-channel controls managing synchronized double-spindle execution and real-time interference monitoring.
Workholding: Hydraulic 3-jaw chucks, collet chucks, or custom soft jaws tailored to delicate geometries to prevent clamping distortion.
Production & Automation Options
Automatic Bar Feeders: Continuous stock feeding for uninterrupted small-to-medium bar production.
Parts Catchers & Unloaders: Integrated conveyor delivery system for damage-free part removal during continuous cycles.
Gantry / Robotic Loading: Overhead robotic arms for heavy forged blanks or cast raw parts.
In-Process Tool & Part Probing: Renishaw probe integration for automatic tool wear compensation and critical feature inspection.
Custom Machine Configuration & Quotation Process
To help our application engineers configure the exact spindle capacity, axis configuration, and automation package for your unit, please provide:
Part Specifications: 2D/3D technical drawings (STEP, IGES, PDF) indicating critical dimensions and geometric tolerances.
Material Details: Material grade (316L Stainless Steel, 4140 Alloy, Titanium, Aluminum 6061).
Production Requirements: Target annual volume, batch sizes, and required target cycle times.
Operational Flow: Preferred loading method (bar feeder, manual billet chucking, or robotic automation).
FAQ
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